Coffee maker and coffee brewing method thereof

Abstract

The application discloses a coffee machine, which comprises a box body, an installation area is formed in the box body, a mixing device is arranged in the installation area, the mixing device comprises a base and a cover arranged on the top of the base, a mixing space is formed between the cover and the base, and an inlet is arranged on the outer side wall of the cover; a bean grinding device is arranged in the installation area and arranged on the side of the mixing device, the bean grinding device comprises a bean grinding cylinder, a bean grinding bin is formed in the bean grinding cylinder, a grinding assembly is arranged in the bean grinding bin, a feeding opening is arranged on the top of the bean grinding cylinder, a guide opening is arranged on the side wall of the bean grinding cylinder, the feeding opening and the guide opening are communicated with the bean grinding bin, a guide channel is formed between the bean grinding bin and the guide opening, the guide channel is inclined downward from the bean grinding bin to the guide opening, and the guide opening is communicated with the inlet. The application avoids the situation that the condensed water generated during the coffee boiling causes the coffee powder to solidify, is difficult to clean, and is affected by the long-time accumulation and mildew, thereby affecting the coffee quality and drinking safety.

Description

Technical Field

[0001] The present invention belongs to the technical field of coffee brewing equipment, and in particular relates to a coffee machine and a coffee brewing method thereof. Background Art

[0002] Coffee machines are divided into bean-based coffee machines and capsule coffee machines. Bean-based coffee machines are loved by coffee lovers because they use freshly ground coffee beans to make coffee, which can fully reflect the flavor of coffee beans and has a mellow taste. They are widely used in the catering industry and people's daily lives.

[0003] The bean grinding mechanism of traditional bean-grinding coffee machines is generally located above the coffee basket. The ground coffee powder directly falls into the coffee basket by gravity. In the process of falling, the coffee powder is prone to splashing, causing coffee powder to stick to the top of the coffee basket and the inside of the coffee machine. During the process of brewing coffee, the condensed water inside the coffee machine will cause the coffee powder stuck inside the coffee machine to solidify, making it difficult to clean the inside of the coffee machine. If it is not cleaned for a long time, it will become moldy, affecting the quality of the coffee and drinking safety. Summary of the Invention

[0004] The purpose of the present invention is to provide a coffee machine and a coffee brewing method thereof, which adopts a side feeding structure to replace the traditional top feeding structure, so as to avoid the condensation water generated during coffee brewing causing the coffee powder to solidify, become difficult to clean, and accumulate and mold over a long period of time, affecting the quality of the coffee and the safety of drinking.

[0005] The above-mentioned objectives are achieved by the following technical solutions.

[0006] The present invention provides a coffee machine, comprising a housing, an installation area formed inside the housing, a mixing device disposed within the installation area, the mixing device comprising a base, a cover disposed on top of the base, a mixing space formed between the cover and the base, and a feed port communicating with the mixing space disposed on an outer side wall of the cover;

[0007] A bean grinding device is provided in the installation area, and the bean grinding device is provided on the side of the mixing device. The bean grinding device includes a bean grinding cylinder, a bean grinding bin is formed in the bean grinding cylinder, a grinding assembly is provided in the bean grinding bin, a feeding port is provided on the top of the bean grinding cylinder, and a material guide port is provided on the cylinder wall of the bean grinding cylinder facing the feed port. The feeding port and the material guide port are both connected to the bean grinding bin, and a material guide channel is formed between the bean grinding bin and the material guide port. The material guide channel is inclined downward from the bean grinding bin to the material guide port, and the material guide port is connected to the feed port.

[0008] In some embodiments, a filter is embedded in the base, the top of the filter extends outside the base, a first seal is provided between the base and the cover, the first seal is provided at the top of the base, a sealing gap is formed between the first seal and the filter, the bottom end of the cover is embedded in the sealing gap, a second seal is provided between the cover and the bean grinding cylinder, one end of the second seal is pressed against the cover, and the other end is pressed against the bean grinding cylinder, and the second seal is annular, forming a through hole connecting the feed port and the material guide port, and the hole wall of the through hole is inclined downward from the material guide port to the feed port, one end is connected to the material guide port, and the other end is connected to the feed port.

[0009] In some embodiments, a plug-in block is provided on the side of the first seal facing the bean grinding cylinder, a plug-in groove is provided on the cover body at a position close to the feed port, the plug-in block is plugged into the plug-in groove, an embedding protrusion is provided on the side of the second seal close to the cover body, an embedding groove is formed on the plug-in block, the embedding protrusion is embedded in the embedding groove and pressed against the cover body, a driving member is provided in the installation area, a movable plate is provided between the second seal and the cylinder wall of the bean grinding cylinder, the driving member is transmission-connected to the movable plate, and a first through groove matching the material guide port and the feed port is opened on the movable plate.

[0010] In some embodiments, the grinding assembly includes a first grinding member and a second grinding member. A rotatable transmission shaft is provided in the bean grinding cylinder. The first grinding member is sleeved on the transmission shaft. The first grinding member is conical or frustum-shaped. First grinding teeth are provided on the outer peripheral wall of the first grinding member. The second grinding member is cylindrical and has a mounting hole. The second grinding member is sleeved on the first grinding member. Second grinding teeth are provided on the inner peripheral wall of the mounting hole of the second grinding member. The second grinding teeth are engaged with the first grinding teeth.

[0011] In some embodiments, the first grinding teeth are provided on the outer peripheral wall of the bottom end of the first grinding member, and the second grinding teeth are provided at the bottom end of the mounting hole. The inner wall of the mounting hole is inclined outward from the top of the second grinding teeth to the top of the second grinding member. A feed gap is formed between the inner wall of the mounting hole and the outer wall of the first grinding member. The feed gap is funnel-shaped, and one end of the material guide channel is located below the feed gap.

[0012] In some embodiments, a guide member is provided on the top end of the second grinding member, a feeding member is provided on the top end of the guide member, a sealing cover is provided on the top end of the feeding member, the feeding member is funnel-shaped, a material guide bin is formed inside the feeding member, a material guide hole connected to the material guide bin is formed on the guide member, and the hole wall of the material guide hole is inclined from the top end of the guide member toward the feeding gap.

[0013] In some embodiments, a downwardly extending extension portion is provided at the bottom of the bean grinding cylinder, and an installation bin is formed in the extension portion, a partition is provided between the installation bin and the bean grinding bin, the partition is inclined downward from the bean grinding bin to the material guide port, a fixing hole is provided on the partition, a driving motor is provided at the end of the bottom end of the extension away from the feeding port, the motor shaft of the driving motor extends into the installation bin, a driving gear is sleeved on the motor shaft of the driving motor, a driven gear is meshed on the driving gear, and the transmission shaft is fixed on the driven gear, the top end of the transmission shaft passes through the fixing hole and extends into the bean grinding bin and is connected to the first grinding member; a material dividing member is provided at the bottom of the first grinding member, the material dividing member is sleeved on the transmission shaft, a plurality of material dividing sheets distributed in a ring array are provided on the outer peripheral wall of the material dividing member, and the end of the material dividing sheet away from the transmission shaft extends into the material guide channel or close to the end position of the material guide channel.

[0014] In some embodiments, a water tank is provided in the installation area, a water inlet is provided on the top of the cover body, a fixing plate is provided above the water inlet, a water inlet connector is provided on the side of the fixing plate facing away from the cover body, the water inlet connector is connected to the water inlet, a spraying member is provided in the mixing space, the top end of the spraying member is provided in the water inlet, a third sealing member is provided between the water inlet and the spraying member, one end of the third sealing member is pressed against the spraying member, and the other end is pressed against the wall of the water inlet, a heating device is provided on the side of the water tank, the heating device includes a heating pipe, one end of the heating pipe is connected to the water tank, and the other end is connected to the water inlet connector.

[0015] In some embodiments, a material receiving area is formed on the side of the box body, and a material receiving platform extending toward the material receiving area is provided at the bottom of the box body. The bottom end of the base is suspended from the material receiving area, and at least one discharge hole is opened on the base, and the discharge hole is connected to the mixing space.

[0016] The present invention also provides a coffee brewing method.

[0017] The feeder receives coffee beans, which pass through the guide bin and guide holes and enter the feed gap between the first and second grinding members from the feeding port on the top of the grinding cylinder. The first grinding member rotates, and the second grinding member follows the rotation of the first grinding member. The first and second grinding teeth grind the coffee beans into coffee powder, which falls into the grinding bin.

[0018] The distribution piece rotates to move the coffee powder, and the coffee powder enters the mixing space through the guide port and the feed port.

[0019] The water in the water tank is fed into the heating pipe for heating and then enters the cover body through the water inlet joint. It is sprayed into the mixing space through the spraying member and mixed with the coffee powder in the mixing space to brew coffee. The coffee is filtered through the filter and then falls into the coffee container in the receiving area from the discharge hole of the base.

[0020] The coffee machine and coffee brewing method provided by the present invention form an installation area inside a box, and a mixing device for accommodating coffee powder and brewing coffee is provided in the installation area, the mixing device includes a base, a cover is provided on the top of the base, a mixing space is formed between the cover and the base, and a feed port connected to the mixing space is provided on the outer wall of the cover; a bean grinding device for grinding coffee beans is provided on the side of the mixing device, the bean grinding device includes a bean grinding cylinder, a bean grinding bin is formed in the bean grinding cylinder, a grinding assembly is provided in the bean grinding bin, a feeding port is provided on the top of the bean grinding cylinder, and a material guide port is provided on the side wall of the bean grinding cylinder facing the feeding port, the feeding port and the material guide port are both connected to the bean grinding bin, a material guide channel is formed between the bean grinding bin and the material guide port, the material guide channel is inclined downward from the bean grinding bin to the material guide port, and the material guide port is connected to the feeding port;

[0021] During use, coffee beans enter the bean grinding bin from the feeding port, are ground into coffee powder by the grinding assembly, pass through the material guide channel and the material guide port, and are fed into the mixing space formed between the cover and the base from the feeding port on the outer wall of the cover. Compared with the traditional structure that uses gravity to make the coffee powder automatically fall into the mixing device from the bottom of the bean grinding mechanism, the coffee powder is fed from the side of the cover, which avoids the coffee powder splashing and sticking to the inside of the coffee machine during the falling process, causing the condensation water generated during coffee brewing to cause the coffee powder to solidify, making it difficult to clean, and accumulating and mildewing for a long time, affecting the quality of coffee and drinking safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

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

[0024] Figure 3 This invention Figure 2 A partial enlarged view of part A;

[0025] Figure 4 is a partially exploded view of the present invention;

[0026] Figure 5 is an exploded view of the mixing device of the present invention with the base removed;

[0027] Figure 6 is an exploded view of the bean grinding device of the present invention;

[0028] Figure 7 This is a schematic diagram of the conductive state of the movable plate of the present invention;

[0029] Figure 8 It is a schematic diagram of the closed state of the movable panel of the present invention.

[0030] Description of reference numerals:

[0031] 100, box body; 101, installation area; 102, material receiving area; 103, material receiving platform; 104, material receiving container; 105, sealing cover; 106, fixing plate;

[0032] 200, mixing device; 201, base; 2011, discharge hole; 202, cover; 2021, feed port; 2022, water inlet; 2023, second convex ring; 2024, plug-in slot; 203, first sealing member; 2031, plug-in block; 2032, annular convex edge; 204, second sealing member; 2041, through hole; 205, third sealing member; 206, water inlet connector; 207, spray element; 208, filter screen; 2081, first convex ring; 209, mixing space;

[0033] 300, bean grinding device; 301, bean grinding cylinder; 3011, bean grinding chamber; 3012, mounting chamber; 3013, material guide channel; 3014, material guide port; 3015, extension portion; 302, first grinding member; 3021, first grinding teeth; 303, second grinding member; 3031, second grinding teeth; 304, material dividing member; 3041, material dividing sheet; 305, guide member; 3051, material guide hole; 306, material feed member; 3061, material guide chamber; 307, partition; 308, fixing sleeve; 309, material feed gap;

[0034] 400, water storage tank;

[0035] 500, heating device; 501, heating tube; 502, water pump;

[0036] 600, control device; 601, control circuit board; 602, fixing seat;

[0037] 701, transmission shaft; 702, driven gear; 703, driving gear; 704, drive motor; 705, motor base;

[0038] 801, driving member; 802, mounting seat; 803, movable plate; 8031, first through slot; 8032, first limiting slot; 8033, limiting screw; 8034, second limiting slot; 8035, pushing screw;

[0039] 1001, first part; 1002, second part; 1003, third part; 1004, snap-in hole. DETAILED DESCRIPTION

[0040] To facilitate understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0041] Unless otherwise specified or defined, the "first, second..." used in this article is only used to distinguish names and does not represent a specific quantity or order.

[0042] Unless stated otherwise or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] It should be noted that, in this document, “fixed to” or “connected to” may mean directly fixing or connecting to an element, or indirectly fixing or connecting to an element.

[0044] refer to Figure 1 This embodiment provides a coffee machine, including a box body 100, a material receiving area 102 is formed on any side wall of the box body 100, a material receiving platform 103 extending toward the material receiving area 102 is provided at the bottom end of the box body 100, and a material receiving container 104 for receiving materials is placed on the material receiving platform 103.

[0045] refer to Figures 2 to 6 An installation area 101 is formed in the box body 100, and a mixing device 200 for accommodating coffee powder and brewing coffee is provided at a position above the receiving area 102 in the installation area 101, and a bean grinding device 300 for grinding coffee beans into coffee powder is provided on the side of the mixing device 200. The mixing device 200 includes a base 201, and the bottom end of the base 201 extends through the box body 100 into the receiving area 102 and faces the receiving table 103. At least one discharge hole 2011 for flowing out coffee is provided at the bottom of the base 201, a filter net 208 is provided in the base 201, and a cover body 202 is provided at the top of the base 201. A mixing space 209 is formed between the cover body 202 and the base 201 for accommodating coffee powder and brewing coffee.

[0046] A feed port 2021 is provided on the outer wall of the cover 202 facing the bean grinding device 300, which is connected to the mixing space 209 and is used to feed the coffee powder conveyed by the bean grinding device 300 into the mixing space 209. A first sealing member 203 is provided between the cover 202 and the base 201. The top of the filter 208 extends above the top of the base 201, and a first convex ring 2081 extending upward is provided on the top of the filter 208. The first sealing member 203 is sleeved on the first convex ring 2081. The seal 203 is annular, and an inwardly extending annular ridge 2032 is provided on the inner wall of the first seal 203. When the first seal 203 is sleeved on the first convex ring 2081, the end of the annular ridge 2032 presses against the outer peripheral wall of the first convex ring 2081, so that a sealing gap is formed between the outer peripheral wall of the first convex ring 2081 and the inner wall of the first seal 203. A downwardly extending second convex ring 2023 is provided at the bottom end of the cover body 202, and the second convex ring 2023 is embedded in the sealing gap.

[0047] An upwardly extending plug-in block 2031 is provided on the side of the first sealing member 203 close to the bean grinding device 300, and a plug-in groove 2024 is provided on the cover body 202 at a position close to the feed port 2021. The plug-in block 2031 is inserted into the plug-in groove 2024, and a second through groove (not shown in the figure, the same below) that matches the feed port 2021 is opened on the plug-in block 2031. A second sealing member 204 is provided on the plug-in block 2031. The second sealing member 204 has an engaging ridge formed on the side of the second sealing member close to the plug-in block 2031. The engaging ridge is inserted into the second through groove, and the other side is pressed against the bean grinding device 300 to seal the connection between the bean grinding device 300 and the feed port 2021, so as to prevent coffee powder from being scattered inside the installation area 101.

[0048] During use, the plug-in block 2031 is plugged into the plug-in groove 2024 to improve the installation stability of the first seal 203, and the second seal 204 is fixed on the plug-in block 2031, thereby further improving the stability of the first seal 203 while reducing the space occupancy rate of the mixing device 200 and improving the connection convenience of the second seal 204.

[0049] The bean grinding device 300 includes a bean grinding cylinder 301 fixedly mounted in the mounting area 101. A downwardly extending extension 3015 is provided at the bottom of the bean grinding cylinder 301. A mounting chamber 3012 is formed in the extension 3015. A partition 307 is provided between the mounting chamber 3012 and the bean grinding chamber 3011. The partition 307 is inclined downward from the bean grinding chamber 3011 toward the material guide port 3014. A material guide channel 3013 is formed between the bean grinding chamber 3011 and the material guide port 3014. The material guide channel 3013 is inclined downward from the bean grinding chamber 3011 toward the material guide port 3014.

[0050] The second sealing member 204 is annular and has a through hole 2041 passing through the second sealing member 204. One end of the second sealing member 204 is pressed against the outer wall of the extension portion 3015, and the other end is embedded in the second through groove through the engaging convex edge, pressing against the plug-in block 2031 or the cover body 202, thereby sealing the gap between the material guide port 3014 and the material feed port 2021.

[0051] The hole wall of the through hole 2041 is inclined downward from the material guide port 3014 to the material feed port 2021 , with one end connected to the material guide port 3014 and the other end connected to the material feed port 2021 , ensuring that the coffee powder in the material guide channel 3013 can smoothly enter the mixing space 209 .

[0052] A grinding assembly is provided in the bean grinding bin 3011, and the grinding assembly includes a first grinding piece 302 and a second grinding piece 303. A drive motor 704 is provided on the side of the bean grinding cylinder 301 away from the cover 202. The motor shaft of the drive motor 704 extends into the mounting bin 3012, and a driving gear 703 is sleeved on the motor shaft of the drive motor 704. A driven gear 702 is meshed with the driving gear 703 on its side wall, and a transmission shaft 701 is fixed to the driven gear 702. The top end of the transmission shaft 701 passes through the partition 3 The fixing hole of 07 extends into the bean grinding bin 3011 and is connected to the first grinding member 302. The first grinding member 302 is conical or truncated cone-shaped, and a first grinding tooth 3021 is provided on the outer peripheral wall of the first grinding member 302. The second grinding member 303 is cylindrical and formed with a mounting hole (not shown in the figure, the same below). The second grinding member 303 is sleeved on the first grinding member 302, and a second grinding tooth 3031 is provided on the inner peripheral wall of the mounting hole of the second grinding member 303. The second grinding teeth 3031 are engaged with the first grinding teeth 3021.

[0053] A fixing sleeve 308 is formed in the mounting compartment, and the motor shaft of the drive motor 704 is at least partially rotatably extended into the fixing sleeve 308. A motor seat 705 is fixedly provided at the top of the drive motor 704. The motor seat 705 can be fixedly connected to the drive motor 704 and the bean grinding cylinder 301 by means of screws, bolts or pins.

[0054] During use, since there is a partition 307 between the installation bin 3012 and the bean grinding bin 3011, a drive motor 704 is provided at the bottom end of the extension portion 3015, and the drive motor 704 is connected to the transmission shaft 701 through the driving gear 703 and the driven gear 702. Only the transmission shaft 701 extends into the bean grinding bin 3011 and is connected to the first grinding member 302, so as to prevent the coffee powder produced by the ground coffee beans from falling into the drive motor 704, the driving gear 703 and the driven gear 702 and affecting normal use.

[0055] The first grinding teeth 3021 are provided on the outer peripheral wall of the bottom end of the first grinding member 302, and the second grinding teeth 3031 are provided at the bottom end of the mounting hole. The inner wall of the mounting hole is inclined outward from the top of the second grinding teeth 3031 to the top of the second grinding member 303. A feed gap 309 is formed between the inner wall of the mounting hole and the outer wall of the first grinding member 302. The feed gap 309 is funnel-shaped, and one end of the material guide channel 3013 is located below the feed gap 309.

[0056] During use, the driving motor 704 is used to drive the driving gear 703 to rotate, which drives the driven gear 702 to rotate and drives the transmission shaft 701 to rotate, thereby driving the first grinding member 302 mounted on the transmission shaft 701 and the second grinding member 303 meshing with the first grinding member 302 to rotate, and the first grinding member 302 is set to be conical or frustum-shaped, and the inner wall of the mounting hole of the second grinding member 303 is inclined outward from the top of the second grinding teeth 3031 to the top of the second grinding member 303, so that a feeding gap 309 is formed between the hole wall of the mounting hole and the outer peripheral wall of the first grinding member 302, so that the coffee beans entering between the first grinding member 302 and the second grinding member 303 can be automatically guided to the position where the first grinding teeth 3021 and the second grinding teeth 3031 mesh with each other for grinding processing, thereby improving the efficiency and stability of the grinding.

[0057] refer to Figure 4 and Figures 7 and 8 A driving member 801 is provided in the installation area 101, and a movable plate 803 is provided between the second sealing member 204 and the wall of the grinding cylinder 301. The driving member 801 is in transmission connection with the movable plate 803, and a first through groove 8031 ​​is formed on the movable plate 803 to cooperate with the material guide port 3014 and the material feed port 2021.

[0058] A mounting seat 802 is fixedly provided in the mounting area 101 . The mounting seat 802 is provided on a side of the bean grinding device 300 . The rotatable driving member 801 is provided on the mounting seat 802 .

[0059] At least one first limiting groove 8032 is provided on the movable plate 803 , and a limiting screw 8033 movable within the first limiting groove 8032 is provided in the first limiting groove 8032 . The limiting screw 8033 is fixedly connected to the outer wall of the cover 202 or the outer wall of the bean grinding cylinder 301 .

[0060] A second limiting groove 8034 is provided on the side of the movable plate 803 opposite to the first limiting groove 8032. The direction of the second limiting groove 8034 is perpendicular to the direction of the first limiting groove 8032, and a liftable pushing screw 8035 is provided in the second limiting groove 8034. The pushing screw 8035 is transmission-connected to the driving member 801.

[0061] The driving member 801 described in this embodiment is a rotatable eccentric wheel structure. When in use, when the coffee powder of the bean grinding device 300 needs to be fed into the mixing space 209, the driving member 801 is rotated eccentrically. Due to the fixation of the mounting seat 802, the driving member 801 drives the pushing screw 8035 to pull the movable plate 803 to move inward within the stroke range of the first limiting groove 8032, so that the first through groove 8031 ​​cooperates with the guide port 3014 and the feed port 2021, and the guide port 3014 and the feed port 2021 are connected; when hot water needs to be added to the mixing space 209, the driving member 801 is rotated in the opposite direction ... 02 is fixed, causing the driving member 801 to drive the pushing screw 8035 to push the movable plate 803 to move outward within the travel range of the first limit groove 8032, so that the first through groove 8031 ​​is staggered with the material guide port 3014 and the feed port 2021, and the material guide port 3014 and the feed port 2021 are isolated by the movable plate 803, and the second sealing member 204 is pressed between the movable plate 803 and the cover body 202, so that the water vapor in the mixing space 209 cannot enter the material guide channel 3013 through the material guide port 3014 to guide the bean grinding bin 3011, thereby causing the coffee powder to condense in the material guide channel 3013 and / or the bean grinding bin 3011.

[0062] A dividing piece 304 located below the first grinding piece 302 is sleeved on the transmission shaft 701, and a plurality of dividing pieces 3041 distributed in a ring array are provided on the outer peripheral wall of the dividing piece 304. When in use, the gap between the two dividing pieces 3041 is used to accommodate coffee powder, and the coffee powder is pushed into the material guide channel 3013 in the grinding bean bin 3011 by the dividing piece 3041. The inclination of the material guide channel 3013 is used to allow the coffee powder to enter the mixing space 209 through the material guide port 3014 and the feed port 2021.

[0063] During use, a dividing piece 304 is provided in the bean grinding bin 3011 and is sleeved on the transmission shaft 701. A plurality of dividing pieces 3041 distributed in a ring array are provided on the outer peripheral wall of the dividing piece 304. The dividing pieces 3041 are used to stir the coffee powder that falls into the bottom of the bean grinding bin 3011 under the grinding action of the first grinding piece 302 and the second grinding piece 303, so that the coffee powder enters the material guide channel 3013 under the stirring action of the dividing piece 3041, thereby improving the conveying efficiency of the coffee powder and avoiding the accumulation of coffee powder at the position of the bean grinding bin 3011 near the material guide channel 3013, which may cause a malfunction of the bean grinding device 300.

[0064] A guide member 305 is sleeved on the top end of the second grinding member 303, a feed member 306 is sleeved on the top end of the guide member 305, a sealing cover 105 is provided on the top end of the feed member 306, the feed member 306 is funnel-shaped, a guide bin 3061 is formed inside the feed member 306, a guide hole 3051 connected to the guide bin 3061 is formed on the guide member 305, and the hole wall of the guide hole 3051 is inclined from the top end of the guide member 305 toward the feed gap 309.

[0065] A water inlet hole 2022 is provided at the top of the cover 202, which is connected to the mixing space 209. A fixing plate 106 is provided on the top of the cover 202, which is located above the water inlet hole 2022. The fixing plate is connected to the box 100. A water inlet connector 206 is provided on the side of the fixing plate 106 facing away from the cover 202. The top of the cover 202 is pressed against the bottom of the fixing plate 106, so that the bottom of the water inlet connector 206 corresponds to the water inlet. The water hole 2022 is connected to the water inlet joint 206, and a spraying member 207 embedded in the water inlet hole 2022 is provided in the mixing space 209. A water tank 400 is provided in the installation area 101, and a heating device 500 is provided on the side of the water tank 400. The heating device 500 includes a heating pipe 501, one end of the heating pipe 501 is connected to the water tank 400, and the other end is connected to the water inlet joint 206.

[0066] A third sealing member 205 is provided between the water inlet hole 2022 and the spray member 207. One end of the third sealing member 205 presses against the spray member 207, and the other end presses against the hole wall of the water inlet hole 2022, so as to seal the gap between the spray member 207 and the hole wall of the water inlet hole 2022, thereby preventing the hot water entering from the water inlet joint 206 from overflowing from the gap between the spray member 207 and the hole wall of the water inlet hole 2022.

[0067] During use, a third sealing member 205 is provided between the water inlet 2022 and the spraying member 207. One end of the third sealing member 205 is pressed against the spraying member 207, and the other end is pressed against the wall of the water inlet 2022, thereby preventing water vapor from overflowing and condensing to damage the internal electrical components of the coffee machine.

[0068] During use, a water tank 400 is provided in the installation area 101, a water inlet hole 2022 is provided on the top of the cover body 202, a water inlet connector 206 is provided on the water inlet hole 2022, a spray piece 207 is provided in the mixing space 209, the top end of the spray piece 207 is provided in the water inlet hole 2022, and a heating device 500 is provided on the side of the water tank 400. The heating device 500 includes a heating pipe 501, one end of the heating pipe 501 is connected to the water tank 400, and the other end is connected to the water inlet connector 206. The water in the water tank 400 is heated by the heating pipe 501 and then sprayed into the mixing space 209 through the spray piece 207, which can flush and melt the coffee powder stuck to the groove wall of the mixing space 209, thereby preventing the coffee powder from adhering and solidifying.

[0069] When in use, the filter 208 receives and blocks the coffee powder that enters the mixing space 209 from the material guiding channel 3013 through the material guiding port 3014 and the material feeding port 2021, thereby preventing the coffee powder from directly falling onto the base 201. At the same time, the coffee powder that cannot be dissolved in the coffee is blocked during brewing, thereby improving the taste of the coffee. At the same time, by providing a first sealing member 203 between the base 201 and the cover 202, and providing a second sealing member 204 between the cover 202 and the bean grinding cylinder 301, the sealing between the material guiding port 3014 and the material feeding port 2021 and the sealing between the cover 202 and the base 201 can be effectively improved, thereby improving the sealing between the coffee powder before and after entering the mixing space 209, thereby preventing the coffee powder from being scattered inside the coffee machine from the gap between the material guiding port 3014 and the material feeding port 2021 and the gap between the cover 202 and the base 201, thereby preventing the coffee powder from being scattered inside the coffee machine from causing adhesion through the gap between the material guiding port 3014 and the material feeding port 2021 and the gap between the cover 202 and the base 201.

[0070] A control device 600 is provided in the installation area 101, and the control device 600 includes a fixing seat 602 fixed in the installation area 101, the heating tube 501 is fixed on the fixing seat 602, and a water pump 502 is provided on the heating tube 501. The water pump 502 is used to draw water from the water tank 400 into the heating tube 501 for heating treatment, and then transport it to the mixing space 209 to brew the coffee powder in the mixing space 209.

[0071] The heating tube 501 described in this embodiment is a U-shaped pipe. A heating wire or other heating structure is arranged in the U-shaped pipe to heat the water flowing into the U-shaped pipe.

[0072] A control circuit board 601 is provided on the fixing seat 602 , and the control circuit board 601 is connected to the driving motor 704 , the water pump 502 and the heating tube 501 respectively. When in use, the control circuit board 601 is used to drive the start and stop of the motor 704 , the water pump 502 and the heating tube 501 .

[0073] The housing 100 of this embodiment includes a first portion 1001, a second portion 1002, and a third portion 1003 that are interconnected. The water tank 400 is disposed within the first portion 1001, the bean grinding device 300, the heating device 500, and the control device 600 are disposed within the second portion 1002, and the mixing device 200 is disposed within the third portion 1003. A snap-fit ​​hole 1004 is formed in the third portion 1003, and the base 201 of the mixing device 200 snaps into the snap-fit ​​hole 1004.

[0074] An outwardly extending extension portion (not shown in the figure, the same below) is provided on the side of the second part 1002 close to the third part 1003, and an installation groove (not shown in the figure, the same below) is formed in the extension portion. The third part 1003 moves in and out of the installation groove by pushing and pulling, and is connected and fixed to the extension portion by means of snap connection, buckle, limit and plug-in.

[0075] The receiving container 104 described in this embodiment is a cup, bowl or other container used to store liquid in the prior art, and does not belong to the technical content to be protected by the present invention.

[0076] The filter 208 described in this embodiment is a detachable component. The combination of the base 201 and the cover 202 can also be used alone to accommodate coffee powder and brew coffee without affecting the normal use of the mixing device 200.

[0077] When the coffee machine described in this embodiment is in use, coffee beans enter the bean grinding bin 3011 from the feeding port, are ground into coffee powder by the grinding assembly, and then pass through the material guide channel 3013 and the material guide port 3014. Then, they are fed into the mixing space 209 formed between the cover body 202 and the base 201 from the feeding port 2021 on the outer wall of the cover body 202. Compared with the traditional structure in which coffee powder is automatically dropped into the mixing device 200 by gravity from the bottom of the bean grinding mechanism, the coffee powder is fed from the side of the cover body 202, which avoids the coffee powder splashing and sticking to the inside of the coffee machine during the falling process, so that the condensed water generated during brewing causes the coffee powder to solidify, making it difficult to clean, and accumulating and becoming moldy over a long period of time, affecting the quality of coffee and drinking safety.

[0078] This embodiment also provides a coffee brewing method, comprising the following steps:

[0079] Open the sealing cover 105 on the housing 100 and add coffee beans into the guide bin 3061 of the feed member 306. The coffee beans pass through the guide bin 3061 and the guide hole 3051 and enter the feed gap 309 between the first grinding member 302 and the second grinding member 303 from the feeding port at the top of the grinding cylinder 301.

[0080] The drive motor 704 rotates, driving the transmission shaft 701 through the driving gear 703 and the driven gear 702. The transmission shaft 701 then drives the first grinding member 302 to rotate. The second grinding member 303, meshing with the first grinding member 302, rotates with the first grinding member 302. The first grinding teeth 3021 and the second grinding teeth 3031 grind the coffee beans into coffee powder, which falls to the bottom of the grinding bean bin 3011.

[0081] The dividing member 304 mounted on the transmission shaft 701 rotates along with the transmission shaft 701, pushing the coffee powder that falls into the gap between the dividing pieces 3041 on the dividing member 304 into the grinding bean bin 3011 until the coffee powder is pushed into the guide channel 3013. At this time, the driving member 801 is started to rotate, driving the movable plate 803 to move so that the guide port 3014 and the feed port 2021 are connected through the first through-slot 8031. The coffee powder is guided by the guide channel 3013 and passes through the guide port 3014, the first through-slot 8031, and the feed port 2021 in sequence into the mixing space 209.

[0082] After the coffee powder is fed into the mixing space 209, the driving member 801 is started to rotate and the movable plate 803 is driven to return to its original position, thereby separating the material guide port 3014 from the material feed port 2021.

[0083] After the material guide port 3014 and the material feed port 2021 are separated, the water in the water tank 400 is sent into the heating tube 501 by the action of the water pump 502, and is heated. Then, the water enters the cover body 202 through the water inlet joint 206, and is sprayed into the mixing space 209 by the spraying member 207 to mix with the coffee powder in the mixing space 209 to brew coffee. After being filtered by the filter mesh 208, the coffee falls into the material receiving area 102 from the material discharge hole 2011 of the base 201, and enters the material receiving container 104 on the material receiving table 103.

[0084] The coffee machine and coffee brewing method provided in this embodiment are characterized by providing a first sealing member 203 between the base 201 and the cover 202, and providing a second sealing member 204 between the cover 202 and the bean grinding cylinder 301. When in use, when coffee powder is fed from the material guide channel 3013 through the material guide port 3014 and the material feed port 2021 into the mixing space 209, the coffee powder is prevented from scattering and adhering to the interior of the installation area 101 from the gap between the cover 202 and the bean grinding cylinder 301, and the gap between the cover 202 and the base 201, thereby making it difficult to clean the interior of the installation area 101. At the same time, a third sealing member 205 is provided between the spraying member 207 and the hole wall of the water inlet 2022 of the cover 202, so as to prevent the water vapor of the hot water entering the mixing space 209 from the water inlet 2022 from being sprayed from the spraying member 207 and the hole wall of the water inlet 2022 of the cover 202. The water vapor will overflow from the wall of the water inlet hole 2022 into the installation area 101, damaging the electrical components inside the installation area 101. When there is coffee powder attached to the installation area 101, the water vapor will cause the coffee powder to solidify and become moldy for a long time, affecting the quality of coffee brewed by the coffee machine. Compared with the traditional coffee machine mechanism in which the bean grinding device 300 feeds the coffee from above the mixing device 200, the bean grinding device 300 of the present embodiment feeds the coffee powder from the side of the mixing device 200 using the inclined material guide channel 3013, thereby avoiding the coffee powder splashing when the coffee powder falls from the bean grinding device into the mixing device 200 under the action of gravity, causing the top of the mixing device 200 and the inside of the coffee machine to stick to the powder, thereby causing the condensed water generated during coffee brewing to cause the coffee powder to solidify, making it difficult to clean, and accumulating and becoming moldy for a long time, affecting the quality of coffee and drinking safety.

[0085] The above embodiments are not exhaustive and may include many other embodiments not listed above. Any replacements and improvements made without violating the concept of the present invention are within the scope of protection of the present invention.

Claims

1. A coffee machine, characterized in that The mixing device comprises a box body, an installation area is formed inside the box body, a mixing device is arranged in the installation area, the mixing device comprises a base, the bottom end of the base extends outside the installation area, a cover body is provided on the top of the base, a mixing space is formed between the cover body and the base, and a feed port connected to the mixing space is opened on the outer side wall of the cover body; A bean grinding device is provided in the installation area, the bean grinding device being provided on the side of the mixing device, the bean grinding device comprising a bean grinding cylinder, a bean grinding chamber being formed in the bean grinding cylinder, a grinding assembly being provided in the bean grinding chamber, a feeding port being formed at the top of the bean grinding cylinder, a material guide port being provided on the cylinder wall of the bean grinding cylinder facing the material feed port, the feeding port and the material guide port both being connected to the bean grinding chamber, a material guide channel being formed between the bean grinding chamber and the material guide port, the material guide channel being inclined downward from the bean grinding chamber toward the material guide port, and the material guide port being connected to the material feed port; A filter is embedded in the base, and the top of the filter extends outside the base. A first seal is provided between the base and the cover. The first seal is provided at the top of the base, and a sealing gap is formed between the first seal and the filter. The bottom end of the cover is embedded in the sealing gap. A second seal is provided between the cover and the bean grinding cylinder. One end of the second seal presses against the cover, and the other end presses against the bean grinding cylinder. The second seal is annular and has a through hole connecting the feed port and the guide port. The wall of the through hole is inclined downward from the guide port to the feed port, one end of which is connected to the guide port, and the other end of which is connected to the feed port. An inserting block is provided on a side of the first sealing member facing the bean grinding cylinder, an inserting groove is provided on the cover body at a position close to the feed opening, the inserting block is plugged into and engaged with the inserting groove, an engaging protrusion is provided on a side of the second sealing member close to the cover body, an engaging groove is formed on the inserting block, the engaging protrusion is embedded in the engaging groove and presses against the cover body; A driving member is provided in the installation area, and a movable plate is provided between the second sealing member and the cylinder wall of the bean grinding cylinder. The driving member is transmission-connected to the movable plate, and a first through groove is provided on the movable plate to cooperate with the material guide port and the material feed port; the driving member is a rotatable eccentric wheel structure.

2. The coffee machine according to claim 1, wherein The grinding assembly includes a first grinding piece and a second grinding piece. A rotatable transmission shaft is provided in the bean grinding cylinder. The first grinding piece is sleeved on the transmission shaft. The first grinding piece is conical or frustum-shaped. First grinding teeth are provided on the outer peripheral wall of the first grinding piece. The second grinding piece is cylindrical and has a mounting hole. The second grinding piece is sleeved on the first grinding piece. Second grinding teeth are provided on the inner peripheral wall of the mounting hole of the second grinding piece. The second grinding teeth are engaged with the first grinding teeth.

3. The coffee machine according to claim 2, wherein: The first grinding teeth are provided on the outer peripheral wall of the bottom end of the first grinding member, and the second grinding teeth are provided at the bottom end of the mounting hole. The inner wall of the mounting hole is inclined outward from the top of the second grinding teeth to the top of the second grinding member. A feed gap is formed between the inner wall of the mounting hole and the outer wall of the first grinding member. The feed gap is funnel-shaped, and one end of the material guide channel is located below the feed gap.

4. The coffee machine according to claim 3, wherein A guide member is sleeved on the top end of the second grinding member, a feeding member is sleeved on the top end of the guide member, a sealing cover is provided on the top end of the feeding member, the feeding member is funnel-shaped, a material guide bin is formed inside the feeding member, a material guide hole connected to the material guide bin is formed on the guide member, and the hole wall of the material guide hole is inclined from the top end of the guide member toward the feeding gap.

5. The coffee machine according to claim 3, wherein The gear train is connected to the gear axle by a toothpick to form a gear train, and the toothpick is connected to the gear train by a toothpick to form a gear train.

6. The coffee machine according to claim 1, wherein A water tank is provided in the installation area, a water inlet is provided on the top of the cover body, a fixing plate is provided above the water inlet, a water inlet joint is provided on the side of the fixing plate away from the cover body, the water inlet joint is connected to the water inlet, a spray piece is provided in the mixing space, the top end of the spray piece is provided in the water inlet, a third sealing piece is provided between the water inlet and the spray piece, one end of the third sealing piece is pressed against the spray piece, and the other end is pressed against the hole wall of the water inlet, a heating device is provided on the side of the water tank, the heating device includes a heating pipe, one end of the heating pipe is connected to the water tank, and the other end is connected to the water inlet joint.

7. The coffee machine according to claim 1, wherein: A material receiving area is formed on the side of the box body, and a material receiving platform extending toward the material receiving area is provided at the bottom of the box body. The bottom end of the base is suspended from the material receiving area, and at least one discharge hole is opened on the base, and the discharge hole is connected to the mixing space.

8. A coffee brewing method, used for the coffee machine according to claim 5, characterized in that: The feeder receives coffee beans, which pass through the guide bin and guide holes and enter the feed gap between the first and second grinding members from the feeding port on the top of the grinding cylinder. The first grinding member rotates, and the second grinding member follows the rotation of the first grinding member. The first and second grinding teeth grind the coffee beans into coffee powder, which falls into the grinding bin. The distribution piece rotates to move the coffee powder, and the coffee powder enters the mixing space through the guide port and the feed port. The water in the water tank is fed into the heating pipe for heating and then enters the cover body through the water inlet joint. It is sprayed into the mixing space through the spraying member and mixed with the coffee powder in the mixing space to brew coffee. The coffee is filtered through the filter and then falls into the coffee container in the receiving area from the discharge hole of the base.

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