Vacuum coffee machine

Abstract

The invention relates to the technical field of coffee machines. The vacuum coffee machine comprises a container assembly, a sealing structure, a processing structure and a carrier assembly provided with a water source connector. An electric control device, a water pump and a vacuum pump are arranged on the carrier assembly; the treatment structure comprises an integrated container, a blade assembly and a rotary power device; the integrated container is fixed in the carrier assembly and provided with a heating device, a temperature sensor, a rotating shaft hole, a water inlet, an air exhaust hole and a bottom outlet, and the bottom outlet is provided with an outlet valve. The coffee beans are ground, heated and extracted in the only sealed space, and the opportunity that coffee powder is transferred among different units and makes contact with oxygen in air is avoided or reduced, so that the oxidation effect can be minimized, and storage of volatile grease, antioxidants and enzymes in the coffee powder can be maximized.

Description

Technical Field

[0001] The present invention relates to the technical field of coffee machines, and particularly to a vacuum coffee machine, a coffee bean quantitative structure of a coffee machine, a vacuum mixing structure, a sealing structure of a vacuum coffee machine, and a coffee making method based on a vacuum coffee machine. Background Art

[0002] In traditional coffee machines, during the grinding, heating, and extraction processes of coffee beans, the coffee beans or coffee powder need to be transferred between different units, increasing the chance of oxidation due to contact with air, resulting in the loss of volatile oils, antioxidants, and enzymes in the coffee powder, and causing flavor changes such as sourness in the brewed coffee. Especially when the contact area between the coffee powder and air is relatively large, this problem is particularly obvious.

[0003] In order to reduce the chance of contact between coffee beans and air, the container structure for accommodating and outputting coffee beans is sealed, which increases the difficulty of quantitatively outputting coffee beans. The container for processing coffee beans also needs to be sealed, and it is necessary to add coffee beans into the container for processing coffee beans. Therefore, it is necessary to automatically open and close the container for processing coffee beans and ensure the sealing performance of the container for processing coffee beans. Summary of the Invention

[0004] An object of the present invention is to solve or alleviate the above technical problems.

[0005] The means adopted by the present invention is a vacuum coffee machine, which includes a container assembly, a sealing structure, a processing structure, and a carrier assembly provided with a water source interface; an electric control device, a water pump, and a vacuum pump are provided on the carrier assembly; the processing structure includes an integrated container, a blade assembly, and a rotary power device; the integrated container is fixed inside the carrier assembly and is provided with a heating device, a temperature sensor, a rotary shaft hole, a water inlet, an air extraction hole, and a bottom outlet, and an outlet valve is provided at the bottom outlet; the water pump, the vacuum pump, the heating device, the temperature sensor, the rotary power device, and the outlet valve are respectively electrically connected to the electric control device; the sealing structure includes a sealing fixed cover and a movable cover, the sealing fixed cover is provided with a bean inlet and completely covers the top opening of the integrated container, the movable cover is provided with a movable cover hole and a sealing portion and is movably connected to the sealing fixed cover, so that the movable cover hole and the sealing portion can respectively face the bean inlet; the blade assembly includes a blade drive shaft and blades fixed on the blade drive shaft, the blades are located inside the integrated container, and the bottom end of the blade drive shaft extends out from the rotary shaft hole and is connected to the rotary power end of the rotary power device; the water source interface is communicated with the water inlet through the water pump, and the passage from the water source interface to the water inlet is a one-way passage pointing from the water source interface to the water inlet; the vacuum pump is communicated with the air extraction hole.

[0006] The achieved effect of the present invention is that coffee beans are ground, heated, and extracted within a single sealed space, avoiding or reducing the chance of coffee powder coming into contact with the oxygen in the air during transfer between different units, thereby minimizing oxidation, maximizing the preservation of volatile oils, antioxidants, and enzymes in the coffee powder.

[0007] A further technical solution is that the container assembly includes a container member, a rotating disk, and a buffer rack that are arranged coaxially from top to bottom in sequence; the bottom wall of the container member is provided with a plurality of container bottom wall holes evenly distributed around its axis, the rotating disk is provided with a plurality of rotating disk holes evenly distributed around its axis, and the buffer rack is provided with buffer grooves; the rotating disk has a rotating power; the container member is directly or indirectly rotationally connected to the rotating disk, the container bottom wall holes are completely offset from the rotating disk holes respectively, and the container bottom wall holes can be respectively aligned with the rotating disk holes; the bottom end surface of the rotating disk is attached to the top end surface of the buffer rack, and there are rotating disk holes that are completely located within the buffer grooves when viewed from above.

[0008] With this technical solution, on the premise of being able to quantitatively output coffee beans, it can also ensure the isolation of the inner cavity of the container member from the outside world and reduce or prevent the oxidation of coffee beans in the container member.

[0009] A further technical solution is that the container assembly further includes a container base located between the container member and the rotating disk. The container base is provided with base holes equal in number to the container bottom wall holes, and the base holes are evenly distributed around the axis of the container base. The bottom end surface of the container member is attached to and hinged to the container base; the container bottom wall holes are completely offset from the base holes respectively, and the container bottom wall holes can be respectively aligned with the base holes.

[0010] With this technical solution, it is convenient to move the container member and the container base and then load coffee beans into the container member.

[0011] A further technical solution is that one of the bottom end surface of the container member and the container base is provided with a rotation limiting groove, and the other is provided with a rotation limiting protrusion inserted into the rotation limiting groove. The states where the rotation limiting protrusions respectively abut against the two ends of the rotation limiting groove respectively correspond to the states where the container bottom wall holes are completely offset from the base holes respectively and the states where the container bottom wall holes are respectively aligned with the base holes.

[0012] With this technical solution, it can ensure the rotation angle between the container member and the container base and improve reliability.

[0013] A further technical solution is that the side wall of the container base is provided with a base mounting protrusion.

[0014] With this technical solution, the container base can be more conveniently installed on the carrier assembly.

[0015] In a further technical solution, the rotation direction from one end of the rotation limiting groove corresponding to the state where the holes in the bottom wall of the container are completely offset from the holes in the base to the end of the rotation limiting groove corresponding to the state where the holes in the bottom wall of the container are aligned with the holes in the base is the same as the rotation direction in which the container base is locked by the rotation of the base mounting protrusion.

[0016] This technical solution facilitates the closing and opening operations of the holes in the bottom wall of the container.

[0017] In a further technical solution, the sealed fixed cover is provided with a bean inlet; the movable cover is provided with a movable cover hole and a sealing portion, and the movable cover is linearly slidably connected to the sealed fixed cover and has a linear driving force, so that the movable cover hole and the sealing portion can respectively face the bean inlet.

[0018] This technical solution can automatically open and close the bean inlet of the sealed fixed cover, ensuring that coffee beans are processed in a sealed integrated container.

[0019] In a further technical solution, the sealing structure further includes a movable cover limiting frame fixed to the sealed fixed cover, the movable cover limiting frame is provided with a limiting frame hole, the sealed fixed cover is provided with a linear sliding structure that is a linear sliding groove, both sides of the movable cover are respectively attached to the inner walls on both sides of the linear sliding structure, and the bottom end surface of the movable cover limiting frame is attached to the movable cover.

[0020] This technical solution can improve reliability.

[0021] In a further technical solution, the sealing structure further includes a weighing sensor, a weighing piece, and a weighing frame; one end of the weighing sensor is fixed relative to the sealed fixed cover, and the other end is fixed to the weighing frame; the movable cover is provided with a weighing piece moving body that fits with the weighing frame, the top of the weighing piece moving body is provided with a weighing piece connecting protrusion that passes through the weighing piece, the weighing frame is provided with a through hole, and a weighing piece support body is provided on the periphery of the through hole of the weighing frame. When the weighing piece support body supports the weighing piece, the through hole of the weighing frame is completely blocked by the weighing piece.

[0022] This technical solution can obtain the weight of the coffee beans ready to enter the bean inlet, facilitating the confirmation of the quantitative information of the coffee beans.

[0023] In a further technical solution, a shaft seal and a bearing are sequentially arranged in the rotation shaft hole from top to bottom.

[0024] This technical solution can ensure the stability of the rotation of the blade drive shaft, and can also reduce the change in the small gap between the blade drive shaft and the shaft seal during rotation, ensuring the sealing performance between the integrated container and the rotation shaft hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional schematic diagram of the vacuum coffee machine according to an embodiment of the present invention Figure 1 .

[0026] Figure 2 is a three - dimensional schematic diagram of the vacuum coffee machine according to an embodiment of the present invention Figure 2 ; The container assembly 1 and the water tank 91 are not shown.

[0027] Figure 3 is a three - dimensional exploded schematic diagram of the vacuum coffee machine according to an embodiment of the present invention Figure 1 .

[0028] Figure 4 is a three - dimensional exploded schematic diagram of the vacuum coffee machine according to an embodiment of the present invention Figure 2 ; The functional component 7, the electronic control device 8, and part of the carrier assembly 9 are not shown.

[0029] Figure 5 is a semi - sectional three - dimensional schematic diagram of the vacuum coffee machine according to an embodiment of the present invention; The functional component 7 is not shown.

[0030] Figure 6 is a three - dimensional exploded schematic diagram of the container assembly 1, the sealing structure 2, and the processing structure 3 of the vacuum coffee machine according to an embodiment of the present invention Figure 1 .

[0031] Figure 7 is a three - dimensional exploded schematic diagram of the container assembly 1, the sealing structure 2, and the processing structure 3 of the vacuum coffee machine according to an embodiment of the present invention Figure 2 .

[0032] Figure 8 is a three - dimensional exploded schematic diagram of a part of the container assembly 1 according to an embodiment of the present invention.

[0033] Figure 9 is a semi - sectional three - dimensional schematic diagram of a part of the container assembly 1 according to an embodiment of the present invention.

[0034] Figure 10 is a three - dimensional exploded schematic diagram of the rotating disk 13, the buffer rack 14, and the sealing structure 2 according to an embodiment of the present invention.

[0035] Figure 11 is a top - view schematic diagram of the rotating disk 13, the buffer rack 14, and the sealing structure 2 according to an embodiment of the present invention.

[0036] Figure 12 is a schematic diagram of section one SEC1.

[0037] Figure 13 is a three - dimensional schematic diagram of section two SEC2.

[0038] Figure 14 is a three - dimensional exploded schematic diagram of the blade assembly 32 according to an embodiment of the present invention.

[0039] Figure 15It is a perspective schematic view of the blade assembly 32 according to an embodiment of the present invention.

[0040] Figure 16 It is a side schematic view of the blade assembly 32 according to an embodiment of the present invention; the line LIE1 represents the horizontal plane.

[0041] Figure 17 It is a half-sectional schematic view of the vacuum coffee machine according to an embodiment of the present invention.

[0042] Figure 18 It is a schematic view of Detail 1 DTL1.

[0043] The accompanying drawings of the specification that best illustrate the technical features of the present invention are Figure 5 .

[0044] Section 1 SEC1; Section 2 SEC2; Detail 1 DTL1; Line 1 LINE1; Container assembly 1; Container part 11; Container bottom wall hole 111; Rotation limit protrusion 112; Flange 113; Guide groove 117; Central axis 118; Container base 12; Base hole 121; Rotation limit groove 122; Base mounting protrusion 123; Rotating disk 13; Rotating disk hole 131; Rotating connection structure 138; Rotating disk power gear 139; Buffer rack 14; Buffer groove 141; Container cover 19; Sealing structure 2; Sealing fixed cover 21; Bean inlet 211; Linear sliding structure 212; Linear sliding power member 219; Movable cover 22; Movable cover hole 221; Sealing part 222; Sealing ring 223; Weighing piece moving body 224; Weighing piece connecting protrusion 225; Movable cover protrusion 229; Movable cover limiting frame 23; Limiting frame hole 231; Weighing piece 24; Relief groove 249; Weighing rack 25; Weighing piece support 254; Weighing piece positioning edge 255; Processing structure 3; Integrated container 31; Heating device 311; Rotating shaft hole 312; Water inlet 314; Air extraction hole 315; Bottom outlet 318; Blade assembly 32; Blade drive shaft 321; Positioning sleeve 322; Shaft seal 328; Bearing 329; Blade 33; Upper blade 331; Middle blade 332; Lower blade 333; Blade edge 334; Cutting teeth 335; Upper inclination angle 336; Lower extension body 337; Shaft connection part 339; Outlet valve 38; Rotating power device 39; Rotating power end 391; Speed change device 392; Water pump 4; Vacuum pump 5; Functional part 7; Filter device 71; Drawer part 711; Filter basket 712; Coffee pot 72; Electric control device 8; Weighing sensor 81; Position sensor 82; Temperature sensor 87; In-position sensor 88; Power supply device 89; Carrier assembly 9; Water tank 91; Water source interface 911; Container slot 92; Base mounting slot 923. Detailed implementation manners

[0045] The following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings of the specification.

[0046] As a specific embodiment, the vacuum coffee machine of the embodiment of the present invention comprises a container component 1, a sealing structure 2, a processing structure 3 and a carrier component 9 provided with a water source interface 911. Figure 2 As shown, a water tank 91 is provided on the carrier assembly 9, and the water tank 91 is connected to a water source interface 911 on the carrier assembly 9, and water can be supplied to the water source interface 911 through the water tank 91. It is easy to understand that water can also be supplied to the water source interface 911 through a water pipe or the like.

[0047] The carrier assembly 9 is provided with an electric control device 8, a water pump 4 and a vacuum pump 5. Figure 4 , 5 As shown, the water pump 4 and the vacuum pump 5 are both fixedly arranged on the inner side wall of the carrier assembly 9 by means of a clamp. It is easy to understand that the water pump 4 and the vacuum pump 5 can also be arranged at other positions of the carrier assembly 9.

[0048] The processing structure 3 includes an integrated container 31, a blade assembly 32 and a rotating power device 39. The integrated container 31 is fixed in the carrier assembly 9 and is provided with a heating device 311, a temperature sensor 87, a rotating shaft hole 312, a water inlet 314, an air extraction hole 315 and a bottom outlet 318. The bottom outlet 318 is provided with an outlet valve 38. Figure 7 As shown, the integrated container 31 is made of aluminum die casting, and a substantially annular heating device 311 is provided at the bottom thereof. When the heating device 311 is powered on, the temperature inside the integrated container 31 can be increased. It is easy to understand that the bottom outlet 318 is exposed from the carrier assembly 9, and the mixture of coffee powder and water in the integrated container 31 can be discharged from the bottom outlet 318 to the filter device 71 described later. The outlet valve 38 is a solenoid valve of the prior art, etc., which can control the opening and closing of the bottom outlet 318.

[0049] The water pump 4, the vacuum pump 5, the heating device 311, the temperature sensor 87, the rotary power device 39, and the outlet valve 38 are electrically connected to the electronic control device 8, respectively. The electronic control device 8 is a prior art, which generally includes a circuit board and other devices for realizing electronic control, a screen for displaying information, and buttons or touch screens for inputting information, etc. It is easy to understand that the electronic control device 8 can control the start, stop, and working state of the water pump 4, the vacuum pump 5, the heating device 311, and the rotary power device 39, respectively. For example, the electronic control device 8 controls the working state of the rotating power device 39 such as the rotation speed through PMW, controls the working state of the flow rate and running time of the water pump 4, and controls the working state of the heating device 311 such as the added power through voltage control. The temperature sensor 87 transmits temperature information to the electronic control device 8, and the electronic control device 8 controls the heating device 311, so as to realize the temperature control of the integrated container 31. Usually, the electronic control device 8 is also electrically connected to an in-position sensor 88 for detecting the position of the coffee pot 72 described later. Typically, the electric control device 8 is connected to a power supply device 89 , such as a battery or a power supply line.

[0050] The sealing structure 2 includes a sealing fixed cover 21 and a movable cover 22. The sealing fixed cover 21 is provided with a bean inlet 211 and completely covers the top opening of the integrated container 31. The movable cover 22 is provided with a movable cover hole 221 and a sealing portion 222 and is movably connected to the sealing fixed cover 21, so that the movable cover hole 221 and the sealing portion 222 can respectively face the bean inlet 211. In other words, when the movable cover hole 221 faces the bean inlet 211, the sealing portion 222 and the bean inlet 211 are completely offset, and when the sealing portion 222 faces the bean inlet 211, the movable cover hole 221 and the bean inlet 211 are completely offset. For example, a part of the sealing fixed cover 21 is embedded in the integrated container 31, and a rubber ring (not shown in the drawings) is provided between the sealing fixed cover 21 and the integrated container 31 to achieve fixation and sealing between the two. For example, the movable cover 22 is rotatably connected to the sealing fixed cover 21 and driven by a motor, so that the movable cover 22 can rotate relative to the sealing fixed cover 21 in a horizontal plane, so that the movable cover hole 221 and the sealing portion 222 can respectively face the bean inlet 211. Of course, the movable cover 22 and the sealing fixed cover 21 can also be movably connected to each other in a subsequent manner.

[0051] The blade assembly 32 includes a blade drive shaft 321 and a blade 33 fixed on the blade drive shaft 321. The blade 33 is located within the integrated container 31. The bottom end of the blade drive shaft 321 extends out from the rotary shaft hole 312 and is connected to the rotary power end 391 of the rotary power device 39. The rotary power device 39 can be a motor, and the motor shaft is connected to the rotary power end 391. Of course, the rotary power device 39 can also be connected to the bottom end of the blade drive shaft 321 through a speed-changing device 392 that is a gearbox. It is easy to understand that when the rotary power device 39 rotates, it can drive the blade drive shaft 321 and the blade 33 to rotate.

[0052] The water source interface 911 is communicated with the water inlet 314 through the water pump 4, and the passage from the water source interface 911 to the water inlet 314 is a one-way passage pointing from the water source interface 911 to the water inlet 314. In other words, the water source interface 911 is communicated with the inlet of the water pump 4 through a pipeline (not shown in the drawings), and the outlet of the water pump 4 is communicated with the water inlet 314 through a pipeline (not shown in the drawings), so that the water at the water source interface 911 can be conveyed to the water inlet 314 and enter the integrated container 31. For example, a one-way valve or a solenoid valve is provided between the water pump 4 and the water inlet 314, and the one-way valve or the solenoid valve only allows water flow or air flow to flow from the water pump 4 to the water inlet 314, so that the passage from the water source interface 911 to the water inlet 314 is a one-way passage pointing from the water source interface 911 to the water inlet 314. For another example, the water pump 4 is a diaphragm pump to simplify the one-way valve or the solenoid valve and reduce costs.

[0053] The vacuum pump 5 is communicated with the air extraction hole 315. It is easy to understand that usually the carrier assembly 9 is not completely sealed. Therefore, even if the vacuum pump 5 is arranged within the carrier assembly 9, the vacuum pump 5 can extract the air within the integrated container 31 and the sealed fixed cover 21 to the atmosphere.

[0054] The coffee-making method based on a vacuum coffee machine according to an embodiment of the present invention uses the above-mentioned vacuum coffee machine, and includes the following steps:

[0055] Step of injecting coffee beans: The movable cover 22 moves relative to the sealed fixed cover 21 so that the movable cover hole 221 is aligned with the bean inlet 211, and then coffee beans are added into the integrated container 31; for example, 31 g of coffee beans are added. The movable cover 22 moves relative to the sealed fixed cover 21 so that the sealing portion 222 is aligned with the bean inlet 211, and the outlet valve 38 is closed.

[0056] Step of vacuum grinding: The vacuum pump 5 is started to form and maintain a vacuum within the integrated container 31, and the rotary power device 39 is started to make the blade 33 grind the coffee beans into coffee powder at a grinding rotation speed. For example, the vacuum is a vacuum degree of -80 kPa ± 10%.

[0057] Steps for brewing coffee: After the vacuum pump 5 stops and the air pressure in the integrated container 31 returns to atmospheric pressure, normal temperature water is replenished into the integrated container 31 (the amount is the total amount of water minus the amount of water for soaking described later), and then the heating device 311 is started to heat the integrated container 31 to the brewing temperature and maintain the brewing time; for example, the brewing temperature is 90 to 96 degrees Celsius.

[0058] Steps for outputting coffee: The outlet valve 38 is opened so that the mixture of coffee powder and water in the integrated container 31 is output from the outlet valve 38.

[0059] It should be noted that the vacuum coffee machine of the embodiment of the present invention needs to be used in conjunction with the functional component 7 of the prior art. Specifically, the functional component 7 includes a filtering device 71 and a coffee pot 72. The filtering device 71 and the coffee pot 72 are arranged one above the other below the outlet valve 38. When the mixture of coffee powder and water output from the outlet valve 38 passes through the filtering device 71, larger coffee powder impurities are filtered out by the filtering device 71, and the coffee liquid passes through the filtering device 71 and enters the coffee pot 72 for people to drink. For example, the filtering device 71 includes a drawer member 711 inserted into the carrier assembly 9, a filter basket 712 provided on the drawer member 711, and a filter screen (not shown in the drawings) placed in the filter basket 712. In the above process, the coffee beans complete grinding, heating, and extraction in the only sealed space, avoiding or reducing the chance of the coffee powder coming into contact with the oxygen in the air during transfer between different units, thereby minimizing the oxidation effect and maximizing the preservation of volatile oils, antioxidants, and enzymes in the coffee powder.

[0060] It should be noted that since the sealed fixed cover 21 completely covers the top opening of the integrated container 31, the cleaning of the integrated container 31 needs to be completed through an automatic cleaning process, specifically: start the water pump 4 to inject normal temperature water into the integrated container 31, start the heating device 311 to heat the water in the integrated container 31 to 70 °C and maintain it for 3 minutes to enhance the cleaning effect and loosen the residue (attachments of coffee powder, etc.) in the integrated container 31. Start the rotary power device 39 to make the blade 33 rotate at a low speed of 200 RPM for 2 minutes to produce a cyclone cleaning effect. Open the outlet valve 38 and discharge the waste water (the mixture of residue and water) from the bottom outlet 318 to the waste water container, and then the inside of the integrated container 31 can be cleaned.

[0061] The coffee-making method based on a vacuum coffee machine according to an embodiment of the present invention further includes a step of soaking coffee beans between the step of injecting coffee beans and the step of vacuum grinding, specifically: after the water pump 4 starts to inject normal temperature water (i.e., water at room temperature, usually 25 °C) into the integrated container 31, the coffee beans are soaked in the water heated to the soaking temperature for a soaking time (understood by capacity, for temperatures higher than normal temperature water, the heating device 311 needs to be turned on to achieve this). This can ensure sufficient extraction of the coffee bean flavor. For example, the soaking temperature is from room temperature to 45 °C, and the soaking time is 2 to 10 min.

[0062] The coffee-making method based on a vacuum coffee machine according to an embodiment of the present invention further includes a step of stirring between the step of soaking coffee beans and the step of vacuum grinding, specifically: the rotary power device 39 starts to operate at a stirring speed for a stirring time. This can ensure uniform grinding of the coffee beans and prevent caking. For example, the stirring speed is 50 to 120 RPM, and the stirring time is 20 to 30 s.

[0063] The coffee-making method based on a vacuum coffee machine according to an embodiment of the present invention further includes a step of final mixing between the step of brewing coffee and the step of outputting coffee, specifically: the rotary power device 39 starts to operate at a mixing speed for a mixing time. This can ensure sufficient mixing of coffee powder and water, ensure full mixing of coffee flavors, and make the coffee liquid have a smooth taste. The mixing speed is 800 RPM, and the mixing time is 3 to 10 s.

[0064] The following are several specific embodiments of the coffee-making method based on a vacuum coffee machine. It should be noted that the weight of the coffee beans and the total amount of water (i.e., the amount of normal temperature water injected plus the amount of supplementary water) can be increased or decreased accordingly, and the ratio of the two remains unchanged to keep the coffee concentration constant. On the premise that the total amount of water remains unchanged, increasing the weight of the coffee beans, for example, increasing the weight of the coffee beans in 20% increments, can increase the coffee concentration.

[0065] Embodiment 1, the goal of this embodiment is to provide a balanced and traditional coffee taste. Specifically: 31 g of coffee beans are injected. 300 ml of normal temperature water is injected. The soaking temperature is 45 °C, and the soaking time is 3 min. The stirring speed is 50 RPM, and the stirring time is 30 s. The grinding speed is 1600 RPM, and the vacuum is -80 kPa. The water is supplemented to 500 ml, the brewing temperature is 94 °C, and the brewing time is 2 to 3 min. The mixing speed is 800 RPM, and the mixing time is 5 s. The total time is 6 to 7 min.

[0066] Example 2. The objective of this example is to highlight the characteristics of lightly roasted coffee beans. Specifically: 31 g of coffee beans are injected. 300 ml of normal temperature water is injected. The soaking temperature is 40 °C, and the soaking time is 3 min. The stirring speed is 90 RPM, and the stirring time is 20 s. The grinding speed is 1800 RPM, and the vacuum is -80 kPa. The water volume is supplemented to 500 ml, the brewing temperature is 96 °C, and the brewing time is 1 to 2 min. The mixing speed is 800 RPM, and the mixing time is 5 s. The total time is 5 to 6 min.

[0067] Example 3. The objective of this example is to highlight the characteristics of medium roasted coffee beans. Specifically: 31 g of coffee beans are injected. 300 ml of normal temperature water is injected. The soaking temperature is 40 °C, and the soaking time is 4 min. The stirring speed is 100 RPM, and the stirring time is 25 s. The grinding speed is 1600 RPM, and the vacuum is -80 kPa. The water volume is supplemented to 500 ml, the brewing temperature is 94 °C, and the brewing time is 1 to 2 min. The mixing speed is 800 RPM, and the mixing time is 5 s. The total time is 6 to 7 min.

[0068] Example 4. The objective of this example is to highlight the characteristics of dark roasted coffee beans. Specifically: 31 g of coffee beans are injected. 300 ml of normal temperature water is injected. The soaking temperature is 40 °C, and the soaking time is 5 min. The stirring speed is 100 RPM, and the stirring time is 25 s. The grinding speed is 1400 RPM, and the vacuum is -80 kPa. The water volume is supplemented to 500 ml, the brewing temperature is 92 °C, and the brewing time is 0.5 to 1 min. The mixing speed is 800 RPM, and the mixing time is 5 s. The total time is 6 to 7 min.

[0069] Example 5. The objective of this example is to maximize flavor extraction. Specifically: 31 g of coffee beans are injected. 300 ml of normal temperature water is injected. The soaking temperature is 40 °C, and the soaking time is 7 min. The stirring speed is 110 RPM, and the stirring time is 30 s. The grinding speed is 1200 RPM, and the vacuum is -80 kPa. The water volume is supplemented to 500 ml, the brewing temperature is 95 °C, and the brewing time is 0.5 to 1 min. The mixing speed is 800 RPM, and the mixing time is 5 s. The total time is 8 to 9 min.

[0070] Example Six. The goal of this example is to simulate the smooth taste of cold brew. Specifically: 31 g of coffee beans are injected. 300 ml of normal temperature water is injected. The soaking temperature is room temperature, and the soaking time is 10 min. The stirring speed is 90 RPM, and the stirring time is 25 s. The grinding speed is 1200 RPM, and the vacuum is -80 kpa. The water volume is supplemented to 500 ml. The brewing temperature is room temperature, and the brewing time is 1 to 4 min. The mixing speed is 800 RPM, and the mixing time is 5 s. The total time is 12 to 15 min.

[0071] Example Seven. The goal of this example is to obtain a strong and rich coffee liquid. Specifically: 31 g of coffee beans are injected. 300 ml of normal temperature water is injected. The soaking temperature is 45 °C, and the soaking time is 4 min. The stirring speed is 100 RPM, and the stirring time is 25 s. The grinding speed is 1200 RPM, and the vacuum is -80 kpa. The water volume is supplemented to 500 ml. The brewing temperature is 95 °C, and the brewing time is 2 to 3 min. The mixing speed is 800 RPM, and the mixing time is 5 s. The total time is 7 to 8 min.

[0072] Example Eight. The goal of this example is for users to fully customize the brewing process. Specifically: 31 g of coffee beans are injected, with the weight in levels of 20% and selectable within 6 levels. 300 ml of normal temperature water is injected. The soaking temperature is defaulted to 40 °C but adjustable, and the soaking time is a selection within the range of 2 to 10 min. The stirring speed is a selection within the range of 50 to 120 RPM, and the stirring time is a selection within the range of 20 to 30 s. The grinding speed is a selection within the range of 1200 to 1800 RPM, and the vacuum is -80 kpa. The water volume is supplemented to 500 ml. The brewing temperature is a selection within the range of 90 to 96 °C, and the brewing time is a selection within the range of 0.5 to 3 min. The mixing speed is 800 RPM, and the mixing time is 3 to 10 s.

[0073] Example Nine. The goal of this example is to imitate traditional drip brewing. Specifically: 31 g of coffee beans are injected. 300 ml of normal temperature water is injected. The soaking temperature is 40 °C, and the soaking time is 4 min. The stirring speed is 100 RPM, and the stirring time is 20 s. The grinding speed is 1600 RPM, and the vacuum is -80 kpa. The brewing temperature is 95 °C. The mixing speed is 800 RPM, the mixing time is 5 s, and the brewing time is 1 to 2 min. The total time is 6 to 7 min.

[0074] As Figure 2 、 8As shown in FIGS. 1 to 13, the coffee bean metering structure of the coffee machine according to the embodiment of the present invention includes a container assembly 1. The container assembly 1 includes a container member 11, a rotating disk 13, and a buffer rack 14 that are arranged coaxially from top to bottom in sequence.

[0075] A plurality of container bottom wall holes 111 evenly distributed around its axis are provided on the bottom wall of the container member 11. A plurality of rotating disk holes 131 evenly distributed around its axis are provided on the rotating disk 13. A buffer slot 141 is provided on the buffer rack 14.

[0076] The rotating disk 13 has a rotating power. For example, the output shaft of the motor is fixedly connected to the rotating disk 13, and the motor drives the rotating disk 13 to make the rotating disk 13 have a rotating power. For another example, as Figure 10 shown, the container assembly 1 further includes a rotating disk power gear 139 with a rotating power. The rotating disk power gear 139 is driven by the motor, and the motor is fixed on the sealing fixed cover 21 described later and is fixed relative to the carrier assembly 9; the rotating disk 13 is a gear and its side wall meshes with the rotating disk power gear 139, so that the rotating disk 13 has a rotating power to avoid the motor being arranged at the axis position of the rotating disk 13 and restricting the size of the rotating disk hole 131.

[0077] The container member 11 is directly or indirectly rotationally connected to the rotating disk 13. For example, the central axis 118 of the container member 11 is directly embedded in the rotating disk 13 to make the container member 11 directly rotationally connected to the rotating disk 13; for example, the container member 11 is rotationally connected to the rotating disk 13 through the container base 12 described later to achieve indirectly rotationally connected to the rotating disk 13.

[0078] The container bottom wall holes 111 are completely staggered from the rotating disk holes 131 respectively, and the container bottom wall holes 111 can be respectively aligned with the rotating disk holes 131. It is easy to understand that the number of the container bottom wall holes 111 is equal to the number of the rotating disk holes 131. For example, both the container bottom wall holes 111 and the rotating disk holes 131 are six. When viewed from above, one container bottom wall hole 111 is located in the area between two adjacent rotating disk holes 131 and has no overlapping part with the two rotating disk holes 131, and this one container bottom wall hole 111 is completely staggered from the rotating disk holes 131; since the number of the container bottom wall holes 111 is equal to the number of the rotating disk holes 131 and both are evenly distributed around the axis of the rotating disk 13, the other container bottom wall holes 111 are also completely staggered from the other rotating disk holes 131 respectively. When viewed from above, when one container bottom wall hole 111 is completely located in one rotating disk hole 131 (including complete overlap), or one rotating disk hole 131 is completely located in one container bottom wall hole 111, this one container bottom wall hole 111 is aligned with this one rotating disk hole 131; the other container bottom wall holes 111 are respectively aligned with the other rotating disk holes 131.

[0079] The bottom end surface of the rotating disk 13 is in contact with the top end surface of the buffer rack 14, and the rotating disk 13 has a rotating disk hole 131 which is completely located in the buffer slot 141 when viewed from above. For example, only one rotating disk hole 131 is completely located in the buffer slot 141 when viewed from above.

[0080] The working principle is that before use, more coffee beans are placed in the container 11, the coffee beans are stored and piled in the container 11, and a part of the coffee beans pass through the container bottom wall hole 111 into the rotating disk hole 131 until being held by the buffer rack 14. It is easy to understand that the multiple rotating disk holes 131 are filled with coffee beans.

[0081] When it is necessary to output coffee beans quantitatively, the electronic control device 8 controls the rotating disk 13 (controls the motor driving the rotating disk power gear 139) to rotate to a set angle, so that the rotating disk holes 131 corresponding to the set angle pass through the buffer slot 141 in sequence, and the coffee beans in the rotating disk holes 131 fall into the buffer slot 141 in sequence. For example, if there are six rotating disk holes 131, the central angle between two adjacent rotating disk holes 131 is sixty degrees. The electronic control device 8 controls the rotating disk 13 to rotate sixty degrees to make the coffee beans in one rotating disk hole 131 fall into the buffer slot 141; the electronic control device 8 controls the rotating disk 13 to rotate two sixty degrees to make the coffee beans in two rotating disk holes 131 fall into the buffer slot 141, and so on. The set rotation angle of the rotating disk 13 can make the coffee beans in the corresponding number of rotating disk holes 131 fall into the buffer slot 141 for use in the next process.

[0082] After the required amount of coffee beans falls into the buffer slot 141, the rotating disk 13 is still in a state where the container bottom wall holes 111 are completely offset from the rotating disk holes 131, and each container bottom wall hole 111 is closed, and the inner cavity of the container 11 is isolated from the outside.

[0083] It can be seen from the above that the coffee bean quantitative structure of the coffee machine of the embodiment of the present invention can ensure that the inner cavity of the container 11 is isolated from the outside world and reduce or prevent the coffee beans in the container 11 from being oxidized, while being able to output the coffee beans quantitatively.

[0084] As one of the specific embodiments, the container component 1 further includes a container base 12 located between the container member 11 and the rotating disk 13. The container base 12 is provided with base holes 121 having the same number as the bottom wall holes 111 of the container member. The base holes 121 are evenly distributed around the axis of the container base 12. The bottom end surface of the container member 11 is attached to and hinged with the container base 12. For example, a central shaft 118 is fixedly provided on the bottom end surface of the container member 11. The central shaft 118 is embedded in the container base 12, and a screw is screwed into the bottom end surface of the central shaft 118 so that the container member 11 can only rotate relative to the container base 12 but cannot be separated from the container base 12. As described above, the container member 11 is indirectly rotatably connected to the rotating disk 13 through the container base 12. The bottom wall holes 111 of the container are completely staggered from the base holes 121 respectively, and the bottom wall holes 111 of the container can be respectively aligned with the base holes 121. After the container member 11 and the container base 12 are disassembled from the carrier component 9, the bottom wall holes 111 of the container are in a state of being completely staggered from the base holes 121 respectively. At this time, the bottom wall holes 111 are all closed, and the container member 11 and the container base 12 can be conveniently moved to load coffee beans into the container member 11. The operation of loading coffee beans into the container member 11 is not limited to the carrier component 9.

[0085] As one of the specific embodiments, a rotation limiting groove 122 is provided on one of the bottom end surface of the container member 11 and the container base 12, and a rotation limiting protrusion 112 inserted into the rotation limiting groove 122 is provided on the other. The states where the rotation limiting protrusion 112 abuts against the two ends of the rotation limiting groove 122 respectively correspond to the states where the bottom wall holes 111 of the container are completely staggered from the base holes 121 respectively and the states where the bottom wall holes 111 of the container are respectively aligned with the base holes 121. For example, the rotation limiting protrusion 112 is cylindrical, and the rotation limiting groove 122 is integrally annular-sector-shaped when viewed from above. When the rotation limiting protrusion 112 abuts against one end of the rotation limiting groove 122, the bottom wall holes 111 of the container are completely staggered from the base holes 121 respectively. When the rotation limiting protrusion 112 abuts against the other end of the rotation limiting groove 122, the bottom wall holes 111 of the container are respectively aligned with the base holes 121. It can ensure the rotation angle between the container member 11 and the container base 12, and further ensure the states where the bottom wall holes 111 of the container are completely staggered from the base holes 121 respectively and the states where the bottom wall holes 111 of the container are respectively aligned with the base holes 121, improving the reliability.

[0086] As one of the specific embodiments, a base mounting protrusion 123 is provided on the side wall of the container base 12; the base mounting protrusion 123 is used for realizing the rotational connection. As Figure 2As shown in the figure, a container slot 92 is provided at the top of the carrier assembly 9, and a base mounting slot 923 is provided on the side wall of the container slot 92. The base mounting slot 923 is L-shaped. First, move the base mounting protrusion 123 downward and slide it into the vertical part of the base mounting slot 923, and then rotate the container base 12 so that the base mounting protrusion 123 slides into the horizontal part of the base mounting slot 923 until it is abutted by the inner wall of the base mounting slot 923 and the container base 12 cannot be rotated any further. In this way, the container part 11 and the container base 12 can be installed on the carrier assembly 9. It should be noted that after the container part 11 and the container base 12 are installed on the carrier assembly 9, the container base 12 is fixed relative to the carrier assembly 9, the buffer rack 14 is fixed relative to the sealing fixed cover 21 and fixed relative to the carrier assembly 9, and the rotating disk 13 is connected to the container base 12 and the buffer rack 14 through a rotating connection structure 138 and can rotate relative to the carrier assembly 9. The rotating connection structure 138 can be a structure in which a cylinder is embedded in a cylindrical hole, or a structure in which a circular side wall is embedded in a cylindrical hole. This embodiment can conveniently install the container base 12 on the carrier assembly 9.

[0087] As one of the specific embodiments, the rotation direction of one end of the rotation limiting groove 122 corresponding to the state where the container bottom wall holes 111 and the base holes 121 are completely offset from each other, pointing to one end of the rotation limiting groove 122 corresponding to the state where the container bottom wall holes 111 and the base holes 121 are directly opposite, is the same as the rotation direction in which the base mounting protrusion 123 rotates to lock the container base 12. As Figure 2 shown in the figure, first move the base mounting protrusion 123 downward and slide it into the vertical part of the base mounting slot 923, and then rotate the container base 12 so that the base mounting protrusion 123 slides into the horizontal part of the base mounting slot 923 until it is abutted by the inner wall of the base mounting slot 923 and the container base 12 cannot be rotated any further. During this process, the rotation direction of the base mounting protrusion 123 is the rotation direction in which the base mounting protrusion 123 rotates to lock the container base 12. Continuing to rotate the container part 11 in this direction can make the state where the container bottom wall holes 111 and the base holes 121 are completely offset from each other become the state where the container bottom wall holes 111 and the base holes 121 are directly opposite. After rotating the container part 11 in the reverse direction, the state where the container bottom wall holes 111 and the base holes 121 are directly opposite becomes the state where the container bottom wall holes 111 and the base holes 121 are completely offset from each other. Then, first move the base mounting protrusion 123 upward and slide it out of the vertical part of the base mounting slot 923, and the container part 11 and the container base 12 can be removed from the carrier assembly 9 in the state where the container bottom wall holes 111 are closed (that is, the state where the container bottom wall holes 111 and the base holes 121 are completely offset from each other). The operation of closing and opening the container bottom wall holes 111 can be completed while disassembling and installing the container part 11 and the container base 12, which is convenient for the closing and opening operations of the container bottom wall holes 111.

[0088] As one of the specific embodiments, a guiding groove 117 is provided on the bottom wall of the container member 11 and communicates with the top end of the container bottom wall hole 111. The cross-sectional area (the plane intercepted by the horizontal plane) of the guiding groove 117 gradually decreases from top to bottom. After a relatively large amount of coffee beans gather in the guiding groove 117, they tend to move towards the container bottom wall hole 111, enabling the container bottom wall hole 111, the base hole 121, and the rotary disk hole 131 to be filled with coffee beans, and there will be no empty rotary disk hole 131, thereby ensuring the accuracy of the coffee bean quantification.

[0089] As one of the specific embodiments, the edges of the container bottom wall hole 111 all extend downward to form a sealed flange 113, and the flange 113 is respectively attached to the container base 12. While ensuring the sealing between the container member 11 and the container base 12, it can ensure that the container member 11 can rotate smoothly relative to the container base 12.

[0090] As one of the specific embodiments, a container lid 19 is provided at the top end of the container member 11, and the container lid 19 completely covers the top opening of the container member 11 to ensure the sealing of the container member 11.

[0091] As Figure 5 、 10 shown, the sealing structure of the vacuum coffee machine according to the embodiment of the present invention includes a sealing structure 2; the sealing structure 2 includes a sealing fixed cover 21 and a movable cover 22. The sealing fixed cover 21 is provided with a bean inlet 211; the movable cover 22 is provided with a movable cover hole 221 and a sealing portion 222. The movable cover 22 is linearly slidably connected to the sealing fixed cover 21 and has a linear driving force, so that the movable cover hole 221 and the sealing portion 222 can respectively face the bean inlet 211. As described above, the sealing fixed cover 21 completely covers the top opening of the integrated container 31. When the movable cover hole 221 faces the bean inlet 211, the coffee beans in the buffer tank 141 can pass through the movable cover hole 221 and enter the integrated container 31. When the sealing portion 222 faces the bean inlet 211, the bean inlet 211 is closed, making the internal space of the integrated container 31 airtight. In summary, the sealing structure of the vacuum coffee machine according to the embodiment of the present invention can realize the automatic opening and closing of the bean inlet 211 of the sealing fixed cover 21, and ensure that the coffee beans are processed in the airtight integrated container 31.

[0092] As one of the specific implementation manners, one side of the movable cover 22 is a rack, and a linear sliding power member 219 in the form of a gear is arranged on the sealing and fixing cover 21, and the rack is engaged with the linear sliding power member 219. The linear sliding power member 219 is driven by a motor (electrically connected to the electric control device 8) to have rotational power, and the linear sliding power member 219 rotates to enable the movable cover 22 to have linear power. A position sensor 82 electrically connected to the electric control device 8 is arranged on the sealing and fixing cover 21. For example, the position sensor 82 is a microswitch. The positions where the movable cover 22 is located when the bean inlet 211 is opened and when the bean inlet 211 is closed respectively trigger the position sensor 82, and in cooperation with the motor of the linear sliding power member 219, the automatic opening and closing of the bean inlet 211 of the sealing and fixing cover 21 can be realized.

[0093] As one of the specific implementation manners, the sealing structure 2 further includes a movable cover limiting frame 23 fixed on the sealing and fixing cover 21. The movable cover limiting frame 23 is provided with a limiting frame hole 231. The sealing and fixing cover 21 is provided with a linear sliding structure 212 in the form of a linear chute. Both sides of the movable cover 22 are respectively attached to the inner walls on both sides of the linear sliding structure 212, and the bottom end surface of the movable cover limiting frame 23 is attached to the movable cover 22, so that the movable cover 22 is linearly slidably connected to the sealing and fixing cover 21. The movable cover 22 is not easily detached from the sealing and fixing cover 21, and the reliability can be improved.

[0094] As one of the specific implementation manners, movable cover protrusions 229 are arranged on both sides of the movable cover 22, and the movable cover protrusions 229 are arranged along the linear power direction of the movable cover 22. The friction between the movable cover 22 and the sealing and fixing cover 21 and / or the movable cover limiting frame 23 can be reduced, and the smooth linear movement of the movable cover 22 can be ensured.

[0095] As one of the specific implementation manners, a sealing ring 223 abutted against the sealing and fixing cover 21 is arranged on the bottom end surface of the sealing portion 222. The sealing ring 223 is made of rubber or the like and has elasticity. When the sealing portion 222 faces the bean inlet 211, the bean inlet 211 is completely located within the sealing ring 223 in a top view. The sealing performance between the movable cover 22 and the sealing and fixing cover 21 can be improved, and it can be ensured that coffee beans are processed in the closed integrated container 31.

[0096] As one of the specific implementation manners, the sealing structure 2 further includes a weighing sensor 81, a weighing piece 24, and a weighing frame 25; as Figure 12As shown in the figure, one end of the load cell 81 is fixedly secured relative to the sealed fixed cover 21, and the other end is fixed to the weighing frame 25. For example, one end of the load cell 81 is fixed to the movable cover limit frame 23 and is thus fixed relative to the sealed fixed cover 21. The movable cover 22 is provided with a weighing plate moving body 224 that fits against the weighing frame 25. At the top of the weighing plate moving body 224, there is a weighing plate connection protrusion 225 that passes through the weighing plate 24. It is easy to understand that the weighing plate connection protrusion 225 can drive the weighing plate 24 to move along with the movable cover 22, but the weighing plate 24 can move up and down along the weighing plate connection protrusion 225. The weighing frame 25 is provided with a through hole (not marked in the attached drawing). At the periphery of the through hole of the weighing frame 25, there is a weighing plate support 254. When the weighing plate support 254 supports the weighing plate 24, the through hole of the weighing frame 25 is completely blocked by the weighing plate 24. After the weighing plate 24 moves along with the movable cover 22 such that the through hole of the weighing frame 25 is completely offset from the weighing plate 24, the coffee beans can pass through the through hole of the weighing frame 25, the limit frame hole 231, and the bean inlet 211 and enter the integrated container 31. Both the movable cover limit frame 23 and the weighing frame 25 are provided with relief grooves 249 that allow the weighing plate moving body 224 to pass through. The coffee beans that fall on the weighing plate 24 are subjected to gravity by the weighing frame 25, enabling the load cell 81 to measure the weight of the weighing frame 25, the weighing plate 24, and the coffee beans. After removing the weights of the weighing frame 25 and the weighing plate 24 for taring, the weight of the coffee beans ready to enter the bean inlet 211 can be obtained, facilitating the confirmation of the quantitative information of the coffee beans. It is easy to understand that for the embodiments with the buffer rack 14 and the rotating disk 13, the weight measured by the load cell 81 also includes the weights of these two components. Therefore, the weights of these two components should also be removed accordingly during taring.

[0097] As one of the specific embodiments, as Figure 13 shown, the sealing structure 2 further includes a buffer rack 14 provided with a buffer groove 141. The buffer groove 141 is directly opposite to the through hole of the weighing frame 25. The buffer rack 14 is fixed to the weighing frame 25, and the side wall at the bottom end of the buffer groove 141 is in contact with or close to the weighing plate 24. As described above, the coffee beans in the container member 11 sequentially pass through the container bottom wall hole 111, the base hole 121, and the rotating disk hole 131 and then enter the buffer groove 141 to gather, rather than spreading over a large area. The weighing plate 24 does not need to be set to a large area and can be set to a small area, thus enabling miniaturization. During the process of the weighing plate 24 moving along with the movable cover 22, the coffee beans in the buffer groove 141 are blocked by its inner wall and do not move along with the movable cover 22, which can improve the reliability.

[0098] As one of the specific embodiments, the weighing frame 25 is provided with a weighing plate positioning edge 255; the weighing plate positioning edge 255 is in contact with or close to the side surface of the weighing plate 24. This ensures that the weighing plate 24 moves linearly along with the movable cover 22, improving the reliability.

[0099] The vacuum mixing structure of the embodiment of the present invention includes a processing structure 3. The processing structure 3 includes an integrated container 31, a blade assembly 32, a sealing and fixing cover 21, and a rotary power device 39. The sealing and fixing cover 21 completely covers the top opening of the integrated container 31. The integrated container 31 is provided with a heating device 311, a rotary shaft hole 312, a water inlet 314, an air extraction hole 315, and a bottom outlet 318 (the bottom outlet 318 can be provided on the bottom end surface of the integrated container 31 or at the bottom of the side wall of the integrated container 31). The water inlet 314 is used to supply water into the integrated container 31, the air extraction hole 315 is used to extract air from the integrated container 31, and an outlet valve 38 is provided at the bottom outlet 318. The blade assembly 32 includes a blade drive shaft 321 and blades 33 fixed on the blade drive shaft 321. The blades 33 are located inside the integrated container 31. The bottom end of the blade drive shaft 321 extends out from the rotary shaft hole 312 and is connected to the rotary power end 391 of the rotary power device 39. As described above, the coffee beans are ground, heated, and extracted in a unique sealed space, avoiding or reducing the chance of the coffee powder coming into contact with the oxygen in the air during transfer between different units, thereby minimizing the oxidation effect and maximizing the preservation of volatile oils, antioxidants, and enzymes in the coffee powder.

[0100] It should be noted that the vacuum mixing structure of the embodiment of the present invention is not limited to the vacuum mixing of coffee beans and water, and can also be used for the vacuum mixing of almonds, cashews, hazelnuts, walnuts, grains, pumpkin seeds, pecans, pine nuts, peanuts, soybeans, etc. with water. Of course, for the embodiments of almonds, cashews, hazelnuts, walnuts, grains, pumpkin seeds, pecans, pine nuts, peanuts, soybeans, etc. with water, the setting of the blades 33 can be adjusted accordingly.

[0101] As one of the specific implementation manners, the blade 33 includes at least one of an upper blade 331, a middle blade 332, and a lower blade 333. The upper blade 331, the middle blade 332, and the lower blade 333 are all provided with a cutting edge 334 and a shaft connecting portion 339. The cross-section of the blade drive shaft 321 is a square, a triangle, or other polygons, an ellipse, or a racetrack shape (the shape of the remaining part between two parallel lines after a circle is divided by the two parallel lines) and is embedded in the shaft connecting portion 339. It can ensure that the blade 33 rotates with the blade drive shaft 321 and also facilitates the assembly of the blade assembly 32.

[0102] As one of the specific implementation manners, the blade assembly 32 further includes a positioning sleeve 322. The positioning sleeve 322 is fittingly sleeved on the blade drive shaft 321 and abuts against the blade 33, thereby restricting the axial positioning of the blade 33. It is convenient for the assembly of the blade assembly 32.

[0103] As one of the specific implementation manners, such as Figure 16As shown, the upper blade 331 and the middle blade 332 both slope upward to form an upper inclination angle 336, which can ensure sufficient mixing of coffee powder and water.

[0104] As one of the specific embodiments, cutting teeth 335 are provided on the cutting edge 334 of the upper blade 331, and the width of the cutting teeth 335 gradually decreases from top to bottom. The top width of the cutting teeth 335 is relatively large, which can quickly impact the coffee beans to crush them and then make them move downward along the gaps between the cutting teeth 335, ensuring the effect of crushing the coffee beans in the upper part of the integrated container 31 (the coffee beans are cut into relatively large particles).

[0105] As one of the specific embodiments, the shaft connection part 339 of the lower blade 333 extends downward to form a lower extension body 337, and the lower extension body 337 is fixedly connected to the lower blade 333 so that the lower blade 333 is substantially parallel and close to the bottom end surface of the integrated container 31. The relatively small coffee particles have a relatively high particle density and sink, cooperating with the bottom end surface of the integrated container 31 to produce a shearing-like effect, thereby improving the grinding effect on coffee (the coffee beans are cut into relatively small particles).

[0106] As one of the specific embodiments, as Figure 18 shown, a shaft seal 328 and a bearing 329 are sequentially arranged from top to bottom in the rotary shaft hole 312, which can ensure the stability of the blade drive shaft 321 during rotation, and can also reduce the minute gap change between the blade drive shaft 321 and the shaft seal 328 during rotation, ensuring the sealing performance between the integrated container 31 and the rotary shaft hole 312.

[0107] In the present invention, terms such as first, second, etc. do not represent any order, quantity or importance, but are only used for distinction.

[0108] In the present invention, terms such as one, a kind of, etc. do not represent a limitation of quantity, but represent the existence of at least one mentioned object.

[0109] In the present invention, terms indicating orientation or position, such as top, bottom, side, longitudinal, transverse, middle, center, outer, inner, horizontal, vertical, left, right, above, below, etc., mean relative position rather than absolute position.

[0110] In the present invention, terms such as substantially, overall, approximately, close, etc. are limiting terms used to indicate the existence of features but allowing certain deviations. The amount of allowable deviation may vary depending on the specific background; for example, for dimensional deviations, the specific background that can be depended on includes but is not limited to relevant standards of dimensional tolerances.

Claims

1. A vacuum coffee machine, which comprises a container assembly (1), a sealing structure (2), a processing structure (3), and a carrier assembly (9) provided with a water source interface (911); an electric control device (8), a water pump (4), and a vacuum pump (5) are arranged on the carrier assembly (9); the processing structure (3) comprises an integrated container (31), a blade assembly (32), and a rotary power device (39); It is characterized in that, The integrated container (31) is fixed in the carrier assembly (9) and is provided with a heating device (311), a temperature sensor (87), a rotary shaft hole (312), a water inlet (314), an air extraction hole (315), and a bottom outlet (318), and an outlet valve (38) is arranged at the bottom outlet (318); the water pump (4), the vacuum pump (5), the heating device (311), the temperature sensor (87), the rotary power device (39), and the outlet valve (38) are respectively electrically connected to the electric control device (8); the sealing structure (2) comprises a sealing fixed cover (21) and a movable cover (22), the sealing fixed cover (21) is provided with a bean inlet (211) and completely covers the top opening of the integrated container (31), the movable cover (22) is provided with a movable cover hole (221) and a sealing portion (222) and is movably connected to the sealing fixed cover (21), so that the movable cover hole (221) and the sealing portion (222) can respectively face the bean inlet (211); The blade assembly (32) comprises a blade drive shaft (321) and blades (33) fixed on the blade drive shaft (321), the blades (33) are located inside the integrated container (31), and the bottom end of the blade drive shaft (321) extends out from the rotary shaft hole (312) and is connected to the rotary power end (391) of the rotary power device (39); the water source interface (911) is communicated with the water inlet (314) through the water pump (4), and the passage from the water source interface (911) to the water inlet (314) is a one-way passage pointing from the water source interface (911) to the water inlet (314); the vacuum pump (5) is communicated with the air extraction hole (315).

2. The vacuum coffee machine according to claim 1, characterized in that, The container assembly (1) comprises a container member (11), a rotary disk (13), and a buffer rack (14) which are arranged coaxially from top to bottom in sequence; a plurality of container bottom wall holes (111) evenly distributed around its axis are arranged on the bottom wall of the container member (11), a plurality of rotary disk holes (131) evenly distributed around its axis are arranged on the rotary disk (13), and a buffer groove (141) is arranged on the buffer rack (14); the rotary disk (13) has rotary power; the container member (11) is directly or indirectly rotatably connected to the rotary disk (13), the container bottom wall holes (111) are completely staggered from the rotary disk holes (131) respectively, and the container bottom wall holes (111) can respectively face the rotary disk holes (131); the bottom end surface of the rotary disk (13) is attached to the top end surface of the buffer rack (14), and there are rotary disk holes (131) on the rotary disk (13) that are completely located inside the buffer groove (141) when viewed from above.

3. The vacuum coffee machine according to claim 2, characterized in that, The container component (1) further includes a container base (12) located between the container part (11) and the rotating disk (13). The container base (12) is provided with base holes (121) equal in number to the container bottom wall holes (111). The base holes (121) are evenly distributed around the axis line of the container base (12). The bottom end surface of the container part (11) is attached to and hinged with the container base (12). The container bottom wall holes (111) are completely staggered from the base holes (121) respectively, and the container bottom wall holes (111) can be respectively aligned with the base holes (121).

4. The vacuum coffee machine according to claim 3, characterized in that, One of the bottom end surface of the container part (11) and the container base (12) is provided with a rotation limiting groove (122), and the other is provided with a rotation limiting protrusion (112) inserted into the rotation limiting groove (122). The states where the rotation limiting protrusions (112) respectively abut against the two ends of the rotation limiting groove (122) respectively correspond to the state where the container bottom wall holes (111) are completely staggered from the base holes (121) respectively, and the state where the container bottom wall holes (111) are respectively aligned with the base holes (121).

5. The vacuum coffee machine according to claim 4, characterized in that, The side wall of the container base (12) is provided with a base mounting protrusion (123).

6. The vacuum coffee machine according to claim 5, characterized in that, The rotation direction of one end of the rotation limiting groove (122) corresponding to the state where the container bottom wall holes (111) are completely staggered from the base holes (121) respectively and pointing to one end of the rotation limiting groove (122) corresponding to the state where the container bottom wall holes (111) are respectively aligned with the base holes (121) is the same as the rotation direction in which the base mounting protrusion (123) rotates to lock the container base (12).

7. The vacuum coffee machine according to claim 1, characterized in that, The sealing fixed cover (21) is provided with a bean inlet (211); the movable cover (22) is provided with a movable cover hole (221) and a sealing part (222). The movable cover (22) is linearly slidably connected to the sealing fixed cover (21) and has a linear power, so that the movable cover hole (221) and the sealing part (222) can respectively face the bean inlet (211).

8. The vacuum coffee machine according to claim 7, characterized in that, The sealing structure (2) further includes a movable cover limiting frame (23) fixed on the sealing fixed cover (21). The movable cover limiting frame (23) is provided with a limiting frame hole (231). The sealing fixed cover (21) is provided with a linear sliding structure (212) that is a linear sliding groove. The two sides of the movable cover (22) are respectively attached to the inner walls of the two sides of the linear sliding structure (212). The bottom end surface of the movable cover limiting frame (23) is attached to the movable cover (22).

9. The vacuum coffee maker according to claim 8, characterized in that, The sealing structure (2) further includes a weighing sensor (81), a weighing piece (24), and a weighing frame (25); one end of the weighing sensor (81) is fixed relative to the sealing fixed cover (21), and the other end is fixed to the weighing frame (25); the movable cover (22) is provided with a weighing piece moving body (224) that fits with the weighing frame (25). The top end of the weighing piece moving body (224) is provided with a weighing piece connecting protrusion (225) that passes through the weighing piece (24). The weighing frame (25) is provided with a through hole. The periphery of the through hole of the weighing frame (25) is provided with a weighing piece support body (254). When the weighing piece support body (254) supports the weighing piece (24), the through hole of the weighing frame (25) is completely blocked by the weighing piece (24).

10. The vacuum coffee maker according to claim 1, characterized in that, An axial seal (328) and a bearing (329) are successively arranged from top to bottom in the rotary shaft hole (312).

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