Full-automatic coffee machine with novel water injection and grinding functions
Technical Field
The invention relates to a full-automatic coffee machine with novel water injection and grinding functions, and belongs to the technical field of coffee machines.
Background
Coffee is one of the most popular beverages in human society, and as the quality of life of people increases, the demand for coffee quality increases.
Most of the coffee machines on the market at present mainly have two problems in the process of brewing coffee, the first problem is: the coffee machine has no grinding function, and most of coffee powder which is ground is adopted for brewing, but aroma substances of the coffee volatilize very fast after the coffee beans are ground into powder, so that the ground coffee powder cannot ensure the quality and taste of the coffee; the second problem is: the taste and quality of coffee are guaranteed, the water injection brewing process is very important, most of coffee machines in the market at present adopt drip filtration type water injection, water is discharged from a water injection port unstably, and the powder layer state is easily damaged during water injection, so that the extraction efficiency of the coffee is damaged, and the taste of the coffee is influenced.
In order to solve the problems, the invention adopts the water injection technology of gear and gear ring matching and inner and outer disc eccentric matching, the inner disc can rotate relative to the outer disc in a manual adjustment mode, so as to realize water injection of different tracks in a certain range, the mechanical structure is smaller, the track is controllable, the problems of the draught condition of coffee powder and the phenomenon of constructing a water flowing channel in the brewing process are solved, the quality and the characteristics of coffee are better kept, and the stability of coffee products is improved; the grinding technology of the cone cutter head and the outer cutter head is adopted, the size of the grinding space is changed through rotating the adjusting nut to adjust the grinding thickness of the coffee beans, the coffee with different mouthfeels is manufactured, the adjusting nut can be screwed out downwards from the center shaft, the center shaft and the cone cutter head are convenient to detach, and cleaning is convenient.
Disclosure of Invention
The invention overcomes the defects of the prior art, and aims to provide a full-automatic coffee machine with novel water injection and grinding functions.
A full-automatic coffee machine with novel water injection and grinding functions comprises a water storage device, a water injection device, a bean bin device, a grinding device, a filter cup conveying device and a control device.
The water storage device is characterized by comprising a kettle, a limiting frame, a water baffle, a PTC ceramic heating plate, a temperature sensor, a push rod and a magnetic flux push-pull valve; the utility model discloses a water injection device, including limit frame, breakwater, limit frame fixed mounting is in the top of breakwater, restricts the motion scope of the push rod of magnetic flow push-and-pull valve, the breakwater is rubber material, breakwater and the push rod fixed connection of magnetic flow push-and-pull valve, PTC ceramic heating plate fixed mounting is in the side of kettle, heats the liquid in the kettle, temperature sensor detects liquid temperature, and liquid temperature has reached the settlement temperature, the push rod of magnetic flow push-and-pull valve promotes the breakwater upward movement, makes the breakwater go up to the bottom position of limit frame, and the sealed effect of rubber disappears, and liquid flows out from breakwater and kettle bottom gap, flows into water injection device via the water receiving container.
The water injection device is characterized by comprising a water receiving container, a flowmeter, a water injection motor gear, a water injection stepping motor, a water inlet, a water injection inner disc, a water injection outer gear ring and a water outlet; the water receiving container is positioned under the kettle, the flowmeter is arranged on the side face of the water receiving container, the water injection motor gear is connected with the water injection stepping motor through a key and meshed with the water injection outer gear, the water injection outer disc is connected with the water injection outer gear through threads, the water injection inner disc is a container with a water outlet at the bottom and is eccentrically matched with the water injection outer disc, the water injection stepping motor drives the water injection outer gear, the water injection outer disc and the water injection inner disc to rotate through the water injection motor gear, liquid flowing into the water injection inner disc from the water inlet flows into the filter bowl through the water outlet according to a certain track, and the water injection inner disc can rotate relative to the water injection outer disc in a manual adjustment mode so as to realize water injection of different tracks in a certain range.
It is characterized in that the bean bin device is used for storing coffee beans and is positioned right above the grinding device.
The grinding device is characterized by comprising a grinding motor gear, a grinding stepping motor, a transmission cover, a grinding outer gear ring, a shell seat, a central shaft, a limiting spring, an outer cutter disc, a conical cutter disc and an adjusting nut; the grinding motor gear is connected with the grinding stepping motor shaft through a key and is meshed with the grinding outer gear ring, the top of the transmission cover is opposite to the outlet of the bean bin device, the lower end of the transmission cover is fixedly connected with the grinding outer gear ring, the upper end of the central shaft is fixedly connected with the transmission cover, the middle of the transmission cover is connected with the conical cutter disc through a key, the lower end of the transmission cover is connected with the adjusting nut through threads, the conical cutter disc is of a conical structure and forms a grinding space with the outer cutter disc, the outer cutter disc is fixedly connected with the bottom of the shell seat, the shell seat is fixedly connected with the backboard, the limiting spring is arranged between the shell seat and the conical cutter disc, and the pretightening force of the adjusting nut acts on the conical cutter disc, so that the limiting spring is tightly pressed, the longitudinal movement of the conical cutter disc is limited, meanwhile, the grinding space size can be changed through rotating the adjusting nut to adjust the grinding thickness of coffee beans, the manufacture of coffee with different mouth feel is realized, the adjusting nut can be screwed out downwards from the central shaft, and the conical cutter disc is convenient to clean.
The filter bowl conveying device is characterized by comprising a stepping motor, a belt pulley, a V-shaped belt, a screw, a sliding block, a tray fixing frame, a filter bowl, a left limit sensor and a right limit sensor; the V-shaped belt is matched with the belt pulley, the input end is connected with the stepping motor through a key, the output end is connected with the screw rod through a bearing, the sliding block is installed on the screw rod, the screw rod is rotated, the sliding block moves in the horizontal direction, one end of the tray fixing frame is fixed on the sliding block, the other end of the tray fixing frame is connected with the tray through a bolt, the tray carries the filter cup to reciprocate along with the sliding block, water injection and powder injection are completed, and the left limit sensor and the right limit sensor are installed on the backboard and used for limiting the movement range of the sliding block.
The control device is characterized by comprising a thermal insulation plate, a singlechip, a touch screen, a start button, a stop button, an automatic button and a manual button; the heat preservation dish is installed on the bottom plate, realizes keeping warm the cup, avoids coffee liquid cooling to influence the taste, the touch-sensitive screen is used for setting up parameters such as the heating time of brewing time, liquid, start button combines together with automatic button, realizes automatic operation mode, and the singlechip receives the signal of touch-sensitive screen input, calculates liquid heating time, the brewing time of coffee, presses down stop button and ends the brewing of coffee, start button combines together with manual button, realizes single step operation, presses manual button once each time, accomplishes a coffee and infuses the function.
Considering that the number of turns and the time required for grinding coffee beans with different particle sizes and different roasting depths are different, the rotating speed of the grinding stepping motor is 60r/min, the number of teeth of the grinding outer gear ring is 56, and the number of teeth of the grinding motor is 20.
Considering the stability and uniformity of the water injection process, the rotating speed of the water injection stepping motor is 20r/min.
The external dimensions of the coffee machine are 360mm x 300mm x 510mm in length x width x height, the volume of the kettle is 2L, and the quantity of coffee brewed once is 400ml.
Compared with the prior art, the invention has the following beneficial effects: the invention adopts the water injection technology of gear and gear ring matching and inner and outer disc eccentric matching, the inner disc can rotate relative to the outer disc in a manual adjustment mode, so as to realize water injection of different tracks in a certain range, the mechanical structure is smaller, the track is controllable, the problems of the draught condition of coffee powder and the phenomenon of constructing a water flow channel in the brewing process are solved, the quality and the characteristics of coffee are better maintained, and the stability of coffee production is improved; adopt the grinder who has adjusting nut, can change the thickness that grinds the space size in order to adjust coffee beans grinding through rotatory adjusting nut, realize the preparation of coffee is felt to different mouthfuls, and adjusting nut can be from central spindle downwards unscrew, makes things convenient for central spindle and awl blade disc to dismantle, is convenient for wash.
Drawings
FIG. 1 is an overall block diagram of a fully automatic coffee machine of the present invention;
FIG. 2 is a cross-sectional view of the water reservoir of the present invention;
FIG. 3 is a block diagram of the water outlet of the water reservoir of the present invention;
FIG. 4 is a cross-sectional view of the water injection device of the present invention;
FIG. 5 is a cross-sectional view of the polishing apparatus of the present invention;
FIG. 6 is an enlarged view of a portion of the cone cutterhead of the present invention;
FIG. 7 is a block diagram of a bowl transfer apparatus of the present invention;
fig. 8 is a structural view of the control device of the present invention.
Wherein: 1. a water storage device, 2, a water injection device, 3, a bean bin device, 4, a grinding device, 5, a filter bowl conveying device, 6, a back plate, 7, a control device, 8, a kettle, 9, a limit frame, 10, a water baffle, 11, a temperature sensor, 12, a PTC ceramic heating plate, 13, a push rod, 14, a magnetic flux push-pull valve, 15, a water receiving container, 16, a flowmeter, 17, a water injection motor gear, 18, a water injection stepping motor, 19, a water injection inner disc, 20, a water inlet, 21, a water injection outer disc, 22, a water injection outer gear ring, 23, a water outlet, 24, a grinding motor gear, 25 and a grinding stepping motor, 26, a transmission cover, 27, a central shaft, 28, an outer grinding gear ring, 29, a shell seat, 30, a limit spring, 31, an outer cutter, 32, a conical cutter, 33, an adjusting nut, 34, a tray, 35, a screw, 36, a left limit sensor, 37, a tray fixing frame, 38, a right limit sensor, 39, a stepping motor, 40, a V-shaped belt, 41, a belt wheel, 42, a sliding block, 43, a filter bowl, 44, a heat insulation disc, 45, a start button, 46, a singlechip, 47, a stop button, 48, an automatic button, 49, a manual button, 50, a touch screen, 51 and a bottom plate.
Detailed Description
As shown in fig. 1-8, a full-automatic coffee machine with novel water injection and grinding functions comprises a water storage device 1, a water injection device 2, a bean bin device 3, a grinding device 4, a filter cup conveying device 5 and a control device 7.
The water storage device 1 is characterized by comprising a kettle 8, a limiting frame 9, a water baffle 10, a PTC ceramic heating plate 12, a temperature sensor 11, a push rod 13 and a magnetic flux push-pull valve 14; the limit frame 9 and the water baffle 10 are positioned at the bottom of the kettle 8, the limit frame 9 is fixedly arranged above the water baffle 10 to limit the movement range of the push rod 13 of the magnetic flux push-pull valve 14, the water baffle 10 is made of rubber, the water baffle 10 is fixedly connected with the push rod 13 of the magnetic flux push-pull valve 14, the PTC ceramic heating plate 12 is fixedly arranged on the side face of the kettle 8 to heat liquid in the kettle 8, the temperature sensor 11 detects the temperature of the liquid, the temperature of the liquid reaches a set temperature, the push rod 13 of the magnetic flux push-pull valve 14 pushes the water baffle 10 to move upwards to enable the water baffle 10 to move upwards to the bottom position of the limit frame 9, the sealing effect of rubber disappears, and the liquid flows out from a gap between the water baffle 10 and the bottom of the kettle 8 and flows into the water injection device 2 through the water receiving container 15.
The water injection device 2 is characterized by comprising a water receiving container 15, a flowmeter 16, a water injection motor gear 17, a water injection stepping motor 18, a water inlet 20, a water injection inner disc 19, a water injection outer disc 21, a water injection outer gear ring 22 and a water outlet 23; the water receiving container 15 is located under the water kettle 8, the flowmeter 16 is mounted on the side surface of the water receiving container 15, the water injection motor gear 17 is connected with the water injection stepping motor 18 through a key and meshed with the water injection outer gear ring 22, the water injection outer disc 21 is connected with the water injection outer gear ring 22 through threads, the water injection inner disc 19 is a container with a water outlet 23 at the bottom and is eccentrically matched with the water injection outer disc 21, the water injection stepping motor 18 drives the water injection outer gear ring 22, the water injection outer disc 21 and the water injection inner disc 19 to rotate through the water injection motor gear 17, liquid flowing into the water injection inner disc 19 from the water inlet 20 flows into the filter cup 43 through the water outlet 23 according to a certain track, and the water injection inner disc 19 can rotate relative to the water injection outer disc 21 through a manual adjustment mode so as to realize water injection of different tracks in a certain range.
Characterized in that the bean bin means 3 is for storing coffee beans, located directly above the grinding means 4.
The grinding device 4 is characterized by comprising a grinding motor gear 24, a grinding stepping motor 25, a transmission cover 26, a grinding outer gear ring 28, a shell seat 29, a central shaft 27, a limiting spring 30, an outer cutter disc 31, a conical cutter disc 32 and an adjusting nut 33; the grinding motor gear 24 is connected with the grinding stepping motor 25 through a key, and is meshed with the grinding outer gear ring 28, the top of the transmission cover 26 is opposite to the outlet of the bean bin device 3, the lower end of the transmission cover 26 is fixedly connected with the grinding outer gear ring 28, the upper end of the central shaft 27 is fixedly connected with the transmission cover 26, the middle of the transmission cover is connected with the conical cutter disc 32 through a key, the lower end of the transmission cover is connected with the adjusting nut 33 through threads, the conical cutter disc 32 is of a conical structure, a grinding space is formed between the conical cutter disc 32 and the outer cutter disc 31, the bottom of the outer cutter disc 31 is fixedly connected with the bottom of the shell seat 29, the shell seat 29 is fixedly connected with the back plate 6, the limit spring 30 is arranged between the shell seat 29 and the conical cutter disc 32, the pretightening force of the adjusting nut 33 acts on the conical cutter disc 32, so that the limit spring 30 is compressed, the longitudinal movement of the conical cutter disc 32 is limited, meanwhile, the grinding space size can be changed through rotating the adjusting nut 33, the manufacture of coffee beans with different mouths is realized, the conical cutter disc 27 can be screwed down from the central shaft 27, and the conical cutter disc 32 is convenient to clean.
The filter cup conveying device 5 is characterized by comprising a stepping motor 39, a belt pulley 41, a V-shaped belt 40, a screw rod 35, a sliding block 42, a tray 34, a tray fixing frame 37, a filter cup 43, a left limit sensor 36 and a right limit sensor 38, wherein the V-shaped belt 40 is matched with the belt pulley 41, an input end of the V-shaped belt is connected with the stepping motor 39 through a key, an output end of the V-shaped belt is connected with the screw rod 35 through a bearing, the sliding block 42 is arranged on the screw rod 35, the screw rod 35 rotates, the sliding block 42 moves horizontally, one end of the tray fixing frame 37 is fixed on the sliding block 42, the other end of the tray fixing frame is connected with the tray 34 through a bolt, the tray 34 carries the filter cup 43 to reciprocate along with the sliding block 42 to finish water injection and powder injection, and the left limit sensor 36 and the right limit sensor 38 are arranged on the backboard 6 to limit the movement range of the sliding block 42.
The coffee brewing device is characterized in that the control device 7 comprises a heat preservation disc 44, a singlechip 46, a touch screen 50, a start button 45, a stop button 47, an automatic button 48 and a manual button 49, wherein the heat preservation disc 44 is arranged on a bottom plate 51, heat preservation of a cup body is achieved, the effect of coffee liquid cooling affecting taste is avoided, the touch screen 50 is used for setting parameters such as brewing time and liquid heating time, the start button 45 is combined with the automatic button 48, an automatic operation mode is achieved, the singlechip 46 receives signals input by the touch screen 50, liquid heating time is calculated, the brewing time of coffee is achieved, the stop button 47 is pressed to finish coffee brewing, the start button 45 is combined with the manual button 49, single-step operation is achieved, and one coffee brewing function is achieved by pressing the manual button 49 every time.
Considering that the number of turns and the time required for grinding coffee beans with different particle sizes and different roasting depths are different, the rotating speed of the grinding stepping motor 25 is 60r/min, the number of teeth of the grinding outer gear ring 28 is 56, and the number of teeth of the grinding motor gear 24 is 20.
The rotation speed of the water injection stepper motor 18 is 20r/min in consideration of stability and uniformity of the water injection process.
The full-automatic coffee machine with the novel water injection and grinding functions has the appearance dimensions of length, width and height of 360mm, 300mm and 510mm, the volume of the kettle 8 is 2L, and the coffee brewing quantity at one time is 400ml.
When the coffee bean grinding device is used, firstly, the temperature for heating the liquid and the grinding time are set on the touch screen 50, and then, according to the required grinding thickness degree of the coffee beans, the adjusting nut is rotated to adjust the grinding space; after the setting is finished, the start button 45 and the automatic button 48 are pressed, the PTC ceramic heating plate in the water storage device starts to heat liquid, the stepping motor in the conveying and conveying device rotates forward, the screw rod rotates forward, after the right limit sensor detects that the filter cup reaches the right limit, coffee beans fall into the grinding device from the bean bin device, the coffee beans fall into the cone cutter head from the upper part of the transmission cover, the grinding stepping motor is matched with the grinding outer gear ring through the grinding motor gear to drive the transmission cover to rotate, the transmission cover transmits power to the cone cutter head through the central shaft to drive the cone cutter head to rotate, the cone cutter head and the outer cutter head generate relative motion, and the ground coffee beans and coffee powder fall into the filter cup; when grinding time is up, the stepping motor is reversed, the screw rod is reversed, the left limit sensor detects that the filter cup reaches the left limit, when the liquid temperature in the water storage device reaches the set temperature, the water injection stepping motor 18 starts to work, the water injection motor gear 17 drives the water injection outer gear ring 22, the water injection outer disc 21 and the water injection inner disc 19 to rotate, the water injection outer disc 21 is eccentrically matched with the water injection inner disc 19, liquid flowing into the water injection inner disc 19 from the water inlet 20 flows into the filter cup 43 through the water outlet 23 according to a certain track to brew coffee powder, a brewed coffee finished product flows into a cup placed on the bottom plate through the filter cup, the heat preservation of the cup body is realized, the influence of coffee liquid temperature reduction on the taste is avoided, the stop button is pressed to finish all work, the starting button and the manual button are pressed down, single-step operation is realized, and one coffee brewing function is completed when the manual button 49 is pressed once.