CN112089078A - Small-sized closed coffee bean roasting machine - Google Patents

Abstract

The invention discloses a small-sized closed coffee bean roasting machine in the technical field of household coffee bean roasting, which comprises a shell and a base, wherein the shell is a sealed box body, and a stir-frying switch, a fire switch, a smoke exhaust switch and a sensor display are arranged on the base; the apron is sealed to be fixed in one side of shell, still be provided with the blast pipe on the apron, temperature and humidity sensor has still been installed on the apron, and the space that occupies is little, and the family or the laboratory of being convenient for uses, and it is all very simple to bake the pot clearance dismantlement, and this device is applicable to a small amount of coffee beans and cures processing more, the preparation of the miniature domestic pot that cures that more suits, and the operation is also simpler and easier, and this device also can bake coffee beans in airtight condition, and the process of this device curing coffee beans has avoided coffee beans and outside air contact, can effectually keep the temperature when coffee beans cure, can not receive the outside air influence.

Description

Small-sized closed coffee bean roasting machine

Technical Field

The invention relates to the technical field of household coffee bean roasting, in particular to a small-sized closed coffee bean roasting machine.

Background

The green coffee beans do not have any coffee aroma, and the rich coffee aroma can be smelled only after the green coffee beans are fried, so that the roasting of the coffee beans is the conversion process of the internal components of the coffee beans, and the coffee aroma can be smelled only after the coffee beans generate the components capable of releasing the coffee aroma.

The quality of roasting of coffee beans directly determines the quality of the aroma of the coffee beans, and coffee with poor roasting cannot obtain good coffee cooked beans even though green coffee beans are good; as a result, it is not possible to produce a good coffee, and it is possible to process a good coffee bean only by properly roasting a good raw coffee bean, and it is also possible to provide a good precondition for producing a good coffee, in which the conversion of the ingredients is very complicated during the roasting process of the coffee bean, and after all, the coffee bean is organic, so the conversion of the ingredients is a very complicated process.

A series of chemical changes occur during baking. After about 5-25 minutes of roasting (depending on the temperature chosen), the green beans lose part of their moisture and turn yellow, during which they expand from a firm, high-density green state to a low-density fluffy state, and by this process they increase in volume by about a factor of two and begin to assume a light brown color after being lightly roasted, which turns less heat after this stage is complete (about 8 minutes of roasting). The color of the coffee is quickly changed into dark color, and when the preset roasting depth is reached, cold air can be used for cooling the coffee beans so as to stop the roasting process;

the baking is roughly classified into Light baking (Light), Medium baking (Medium), City baking (City), and Deep baking (Deep);

lightly roasted coffee beans: has strong smell and is crisp, and the high acidity is the main flavor and slight alcohol degree;

medium roasted coffee beans: has very concentrated alcohol degree and also preserves certain acidity;

city roasted coffee beans: the surface has dark brown color, the acidity is replaced by slight bitter taste, and most of the flavor is destroyed;

deep roasted coffee beans: the color was dark brown, the surface was oily, the alcohol content was significantly increased for most coffee beans, and the acidity was reduced.

The roasting of the coffee beans needs to be operated by depending on the experience of roasting personnel, so that the processing efficiency is low, the yield is low, errors are easy to generate, each step is not standardized, the change of the coffee beans during roasting is not known, and the roasting of the coffee beans can be standardized and is easier to operate along with the improvement of the technology and the establishment of the roasting standard of the coffee beans by people.

The coffee bean roasting machine belongs to food processing equipment, and as the mechanical structure and the electric control system of the coffee bean roasting machine have no overhigh technical difficulty, theoretical research and design development contents of the coffee bean roasting machine do not enter various colleges and universities and various major industry research institutions at home and abroad, the coffee bean roasting machine is mainly concentrated in small and medium enterprises of companies in the coffee industry, the coffee bean roasting machine at home has fewer products at present, most of the coffee bean roasting machines belong to large-scale commercial roasting machines, and meanwhile, most of the coffee bean roasting machines have the problems of complex structure, difficult assembly and disassembly, inconvenient cleaning and the like, and are not suitable for the research of coffee beans in laboratories; and more people have own unique taste to the taste of coffee at present, and the taste of the coffee bean manufacturers is not satisfied with the popular taste of a large amount of roasted coffee beans, so that a simple small-sized roasting machine which can roast the coffee beans by people according to the taste of the people is needed at present.

Based on this, the present invention has devised a small-sized closed coffee bean roasting machine to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a small-sized closed coffee bean roasting machine which occupies a small space, is convenient to use in families or laboratories, is simple to clean and disassemble a roasting pot, does not have a large-sized roasting machine penetrating through a center penetrating shaft of the roasting pot, does not have complicated instruments, is more suitable for roasting and processing a small amount of coffee beans, is more suitable for manufacturing a miniature household roasting pot, and is simpler and easier to operate.

The invention is realized by the following steps: a small, enclosed coffee bean roaster, comprising:

the device comprises a shell and a base, wherein the shell is a sealed box body, a turnover cover is locked on the shell in an openable and lockable manner, the shell is stably and fixedly arranged on the base, and a stir-frying switch, a fire switch, a smoke exhaust switch and a sensor display are arranged on the base;

the cover plate is fixed on one side of the shell in a sealing mode, a plurality of shell air inlets are uniformly formed in one side, close to the cover plate, of the shell, a discharge hole is formed in the cover plate, a discharge door capable of being opened and closed is arranged on the discharge hole, an exhaust pipe is further arranged on the cover plate, and a temperature and humidity sensor is further mounted on the cover plate;

the door closing mechanism controls the opening or closing of the discharge door outside the shell;

the baking pan is of a cylindrical structure with an opening at one side, a plurality of ventilation holes are uniformly formed in one side of the closed pan bottom of the baking pan, the baking pan can be rotatably erected in the inner cavity of the shell, the axial lines of the opening side of the baking pan and the pan bottom are in the same straight line and are horizontally arranged, the cover plate is abutted against and covers the opening side of the baking pan, and the cover plate and the baking pan are in clearance fit;

the driving device is a power source for rotating the baking pan;

the air inlet bundling tube is arranged in the shell, a plurality of shell air inlets are communicated with the air inlets of the air inlet bundling tube, an air outlet of the air inlet bundling tube is connected with the heating extension tube, the shell is also internally provided with an electric heater, the electric heater is arranged close to the baking pot, the heating extension tube is also arranged close to the electric heater, and an air outlet of the heating extension tube and a ventilation hole at the bottom of the baking pot are arranged in the same cavity;

the air suction port of the air suction device is communicated with the outlet of the exhaust pipe in a separable way, and the inlet of the exhaust pipe is communicated with the inner cavity of the baking pan;

the air suction device is electrically connected with an external power supply through a smoke exhaust switch, the driving device is electrically connected with the external power supply through a stir-frying switch, the electric heater is electrically connected with the external power supply through a fire switch, the sensor display is in data connection with the temperature and humidity sensor, and the sensor display is electrically connected with the external power supply.

Furthermore, a plurality of baking pan supporting rods are horizontally erected in the shell, each baking pan supporting rod is at least provided with a rotating wheel and a limiting supporting wheel, the rotating wheel and the limiting supporting wheel are guide wheels, a clamping groove is formed in the outer ring of the limiting supporting wheel, a limiting ring is convexly arranged on the outer ring of the baking pan, and the limiting ring can be rotatably clamped in the clamping groove of the limiting supporting wheel.

Furthermore, the inner cavity of the shell consists of a rotating equipment chamber and a heating chamber, the electric heater is horizontally and uniformly distributed on the whole heating chamber, the electric heater is arranged right below the baking pan, the air outlet of the heat extension pipe is tightly close to the outside of the air vent at the lowest part, the aperture of the air vent is less than three millimeters, the exhaust pipe is arranged at the top of one side of the opening of the baking pan, the electric heater is a carbon fiber heating pipe, and the electric heater horizontally extends from the opening end of the baking pan to the position below the air outlet of the heat extension pipe.

Furthermore, the driving device is a motor, a driving wheel is fixed on the output end of the driving device, the driving wheel is connected with a driving wheel through a driving belt, the driving wheel is fixedly connected with a transmission shaft, and the other end of the transmission shaft is detachably connected to the circle center outside the bottom of the baking pan through a bolt.

Further, there is an opening at the shell top, flip passes through the hinge mount on the shell, flip covers the open-top department at the shell, the length and the width of baking the pot are all less than flip open back shell top's open length and width, all covered thermal-insulated cotton on flip and the shell inner wall, thermal-insulated cotton does not block the shell air inlet.

Further, still fixed the water conservancy diversion mouth on the apron, the water conservancy diversion mouth is open-topped slot column structure, the open-topped of water conservancy diversion mouth tightly leans on the discharge door bottom, the sample connection has been seted up of downward sloping on the apron, the sample connection and the inner chamber intercommunication that cures the pot, can separate inserting in the sample connection is equipped with the sampler.

Further, the sampler is the shaft-like structure, the sample chamber has been seted up to the one end of sampler, the other end of sampler is the grab handle, the screens piece has set firmly on the middle section of sampler, the left side of screens piece is straight cylindric structure on the sampler, the left side and the sample connection of sampler are clearance fit, the screens piece covers whole sample connection, the screens piece can't pass the sample connection.

Further, door closing mechanism includes runner, dwang, first connecting rod, second connecting rod and third connecting rod, runner and dwang fixed connection, the installation that the dwang can rotate but can't remove with the fixed one end of first connecting rod is on the apron, the top horizontal pole fixed connection of third connecting rod and discharge door, the installation that the third connecting rod can rotate but can't remove with the fixed one end of discharge door is on the apron, the expansion end of first connecting rod and the expansion end of third connecting rod all connect the both ends at the second connecting rod respectively through the pivot, the second connecting rod not with apron connection, plane four-bar linkage is constituteed to runner, dwang, first connecting rod, second connecting rod, third connecting rod and discharge door.

Furthermore, a sealing cover is fixed on the discharging door, when the discharging door is closed, the sealing cover is filled in the discharging port, and a gap between the cover plate and the baking pan is less than two millimeters.

Further, a timer is further arranged on the base and electrically connected with the electric heater, and the air suction device is a fan.

The invention has the beneficial effects that: the invention enables the original large-scale coffee bean roasting machine to allow the miniaturization assembly from the structure by changing the structure of the roasting pan, the former large-scale coffee bean roasting machine can roast more coffee beans at one time and also needs to keep the roasting uniformity, a rotating shaft is required to be penetrated through the roasting pan for supporting and driving the large-scale roasting pan to rotate in a balanced way, and a plurality of stirring blades are required to be added on the rotating shaft for stirring uniformly, because the device uses the miniature roasting pan, a driving shaft does not penetrate through the device, only the roasting pan can integrally form a plurality of stirring blades, and the device is supported by an external supporting rod, the device can open the shell through a turnover cover to clean the roasting pan, and the roasting pan can be detached for cleaning, the device also can roast the coffee beans in a closed condition, and the process of roasting coffee beans by the device avoids the contact of coffee beans with outside air, can effectively keep the temperature of coffee beans during roasting, and can not be influenced by the outside air, can effectively avoid the situation that the roasting process is too cold and too hot, and in the process of discharging the moisture generated by roasting the coffee beans, when outside dry air is pumped into the roasting pot, the cold air is preheated in the heating extension pipe to prevent the cold air from directly rushing into the roasting pot, thereby effectively avoiding the sudden temperature drop of the roasting pot, better controlling the processing temperature and the humidity in the roasting pot, simultaneously meeting the requirement of the coffee bean roasting mode of semi-direct fire and semi-hot air, keeping the roasting pot in a relatively isolated environment and not being influenced by the outside temperature and humidity any more, and the rotation mode of the roasting pot of the device is the same as the rolling mode of a large-sized, the device has the structure and the volume of a small coffee bean roasting machine, and simultaneously has the effect and the roasting process of a large coffee bean roasting machine.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a top view of the internal structure of the housing of the present invention;

FIG. 4 is a front view of the internal structure of the housing of the present invention;

FIG. 5 is a schematic view of the external structure of the cover plate according to the present invention;

FIG. 6 is a cross-sectional view of the lid and baking pan of the present invention;

FIG. 7 is a schematic view of the internal structure of the roasting pan of the present invention;

FIG. 8 is a schematic view of the overall front structure of the present invention;

FIG. 9 is a schematic diagram of a sampler according to the present invention;

fig. 10 is a schematic view of the discharge door structure of the present invention.

Detailed Description

Referring to fig. 1 to 10, the present invention provides a technical solution: a miniature enclosed coffee bean roaster comprising:

the device comprises a shell 1 and a base 2, wherein the shell 1 is a sealed box body, a turnover cover 11 is locked on the shell 1 in an openable and locking manner, the shell 1 is stably and fixedly arranged on the base 2, and a stir-frying switch 21, a fire switch 22, a smoke exhaust switch 23 and a sensor display 26 are arranged on the base 2;

the air conditioner comprises a cover plate 5, wherein the cover plate 5 is arranged on one side of a shell 1, a plurality of shell air inlets 12 are uniformly formed in one side, close to the cover plate 5, of the shell 1, a discharge hole 57 is formed in the cover plate 5, a discharge door 53 is arranged on the discharge hole 57 in an openable and closable manner, an exhaust pipe 52 is further arranged on the cover plate 5, and a temperature and humidity sensor 56 is further arranged on the cover plate 5;

the door closing mechanism 3 controls the opening or closing of the discharging door 53 outside the shell 1;

the baking pan 9 is of a cylindrical structure with an opening at one side, a plurality of ventilation holes 92 are uniformly formed in one side of the closed pan bottom of the baking pan 9, the baking pan 9 can be rotatably erected in the inner cavity of the shell 1, the opening side of the baking pan 9 and the axis of the pan bottom are arranged in the same straight line and horizontally, the cover plate 5 abuts against and covers the opening side of the baking pan 9, and the cover plate 5 is in clearance fit with the baking pan 9;

the driving device 4 is a power source for rotating the baking pan 9;

the air inlet bundling tube 7 is arranged in the shell 1, a plurality of shell air inlets 12 are communicated with air inlets of the air inlet bundling tube 7, an air outlet of the air inlet bundling tube 7 is connected with a heating extension tube 72, an electric heater 71 is further arranged in the shell 1, the electric heater 71 is arranged close to the baking pot 9, the heating extension tube 72 is also arranged close to the electric heater 71, and an air outlet of the heating extension tube 72 and a ventilation hole 92 at the bottom of the baking pot 9 are in the same cavity;

the air suction device 8 is characterized in that an air suction port of the air suction device 8 is detachably communicated with an outlet of the exhaust pipe 52, and an inlet of the exhaust pipe 52 is communicated with the inner cavity of the baking pan 9;

the air suction device 8 is electrically connected with an external power supply through the smoke exhaust switch 23, the driving device 4 is electrically connected with the external power supply through the stir-frying switch 21, the electric heater 71 is electrically connected with the external power supply through the fire switch 22, the sensor display 26 is in data connection with the temperature and humidity sensor 56, and the sensor display 26 is electrically connected with the external power supply, so that the device is in a semi-direct-fire and semi-hot-air coffee bean baking mode, the situation that cold air outside the device is directly blown on coffee beans in the baking pot 9 is effectively avoided, the baking humidity can be effectively controlled through the air suction device 8, the baking temperature is more effectively controlled through a closed structure, the stability of the baking temperature and the baking humidity can be kept, the temperature and the humidity of the device can be monitored and controlled, and the device is used as a small coffee bean baking machine, can take a sample to monitor the whole process that the coffee beans were baked, and make through inclosed space and bake the data stable accurate, it is better to bake the effect, and present general domestic coffee beans roasting machine all is small-size open-type, receives external influence very easily, and this problem has been solved to this device.

A plurality of baking pan supporting rods 6 are horizontally erected in the shell 1, at least one rotating wheel 61 and one limiting supporting wheel 62 are mounted on each baking pan supporting rod 6, the rotating wheel 61 and the limiting supporting wheel 62 are guide wheels, a clamping groove is formed in the outer ring of the limiting supporting wheel 62, a limiting ring 93 is convexly arranged on the outer ring of the baking pan, and the limiting ring 93 can be rotatably clamped in the clamping groove of the limiting supporting wheel 62, so that the baking pan 9 of the device can rotate more stably and smoothly; the inner cavity of the shell 1 is composed of a rotating equipment chamber 73 and a heating chamber 74, the electric heater 71 is horizontally and uniformly distributed on the whole heating chamber 74, the electric heater 71 is arranged right below the baking pan 9, the air outlet of the heat extension pipe 72 is tightly close to the outside of the air vent 92 at the lowest part, the aperture of the air vent 92 is less than three millimeters, the exhaust pipe 52 is arranged at the top of one side of the opening of the baking pan 9, the electric heater 71 is a carbon fiber heating pipe, the electric heater 71 horizontally extends from the opening end of the baking pan to the position below the air outlet of the heat extension pipe 72 all the way, so that newly-fed air can be effectively heated, the air flow can not be directly sucked away, the air flow is circulated in the baking pan 9 and replaces the original damp gas in the baking pan 9, the driving device 4 is a motor, a driving wheel 41 is fixed on the output end of the driving device 4, and the driving wheel 41 is connected with a driving wheel 42 through, the driving wheel 42 is fixedly connected with the driving shaft 44, the other end of the driving shaft 44 is detachably connected with the center of the outside of the bottom of the baking pan 9 through a bolt, so that the driving device 4 of the device is not easy to scald, and the baking pan 9 can be effectively rotated to stir-fry, the top of the shell 1 is provided with an opening, the flip cover 11 is installed on the shell 1 through a hinge, the flip cover 11 covers the opening at the top of the shell 1, the length and the width of the baking pan 9 are both smaller than the length and the width of the opening at the top of the shell 1 after the flip cover 11 is flipped open, the inner walls of the flip cover 11 and the shell 1 are both covered with heat insulation cotton 111, the heat insulation cotton 111 does not block the shell air inlet 12, the baking pan 9 is convenient to clean and take out, the inner space of the shell 1 is cleaned, the heat insulation effect of the shell 1 is not influenced, the cover plate 5 is further fixed with the flow guide nozzle 51, the opening at the top of the flow guide nozzle 51 is tightly abutted against the bottom of the discharge door 53, the cover plate 5 is provided with a sampling port 54 which is inclined downwards, the sampling port 54 is communicated with the inner cavity of the roasting pot 9, a sampler 55 is inserted in the sampling port 54 in a separable manner, coffee beans can be taken out conveniently after roasting is finished, the coffee beans cannot fall off, the sampler 55 is of a rod-shaped structure, one end of the sampler 55 is provided with a sampling cavity 551, the other end of the sampler 55 is provided with a grab handle 552, a clamping sheet 553 is fixedly arranged on the middle section of the sampler 55, the sampler 55 is provided with a straight cylindrical structure at the left side of the clamping sheet 553 on the sampler 55, the left side of the sampler 55 is in clearance fit with the sampling port 54, the clamping sheet 553 covers 553 the whole sampling port 54, and the clamping sheet 553 cannot penetrate through the sampling port 54, so that the device can check the roasting condition of, the normal roasting of the coffee beans is not influenced, and the coffee beans are not hung when being roasted, the door closing mechanism 3 comprises a rotating wheel 31, a rotating rod 32, a first connecting rod 33, a second connecting rod 34 and a third connecting rod 35, the rotating wheel 31 is fixedly connected with the rotating rod 32, one end, fixed by the rotating rod 32 and the first connecting rod 33, of the rotating rod 32 can rotate but cannot move and is arranged on the cover plate 5, the third connecting rod 35 is fixedly connected with a top cross rod of the discharging door 53, one end, fixed by the discharging door 53, of the third connecting rod 35 can rotate but cannot move and is arranged on the cover plate 5, the movable end of the first connecting rod 33 and the movable end of the third connecting rod 35 are respectively connected with two ends of the second connecting rod 34 through rotating shafts, the second connecting rod 34 is not connected with the cover plate 5, and the rotating wheel 31, the rotating rod 32, the first connecting rod 33, the second connecting rod 34, the third connecting rod 35 and the discharging door 53, the device can rotate the discharging door 53 with stronger rotating wheel 31, the rotating wheel 31 is far away from the heated roasting pan 9 and is not easy to scald hands, the discharging door 53 is also fixed with the sealing cover 531, when the discharging door 53 is closed, the sealing cover 531 is filled in the discharging port 57 (the sealing cover 531 comprises a window plate 5311 and a visual window 5312, the visual window 5312 is embedded and fixed in the middle of the window plate 5311, the window plate 5311 is fixedly connected with the discharging door 53 through bolts, the window plate 5311 is matched with the discharging port 57 by an inclined plane for realizing sealing), a gap between the cover plate 5 and the roasting pan 9 is smaller than two millimeters, coffee beans are prevented from falling on the discharging port 57 and can not be directly heated and roasted by the roasting pan 9, so that each coffee bean can be effectively roasted by blocking the discharging port 57 through the sealing cover 531, and the opening gap between the cover plate 5 and the roasting pan 9 is smaller, coffee beans and impurity just can not drop out and bake pot 9, and this device is difficult for making dirty, has still set up timer 27 on the base 2, timer 27 is connected with electric heater 71 electricity, getter device 8 is the fan, is convenient for record and control to bake the time and stir-fry the time, and timer 27 has a plurality of time recorder and timer, avoids baking overtime or toasting the time inadequately, and the getter device 8 of this device uses the fan, simply easily gets easy clearance.

One specific application of the embodiment is as follows: the shell 1 is fixed on the base 2 through the support frame 13, so that the support is more stable, the heat insulation effect is good, and the electronic control device in the base 2 is prevented from being damaged by heating;

when the device is used, a proper amount of green coffee beans are selected, an air inlet of an air suction device 8 is separated from an exhaust pipe 52, the lower end of the exhaust pipe 52 is fixed on a cover plate 5 and penetrates through the cover plate 5 to be communicated with the open end of a baking pot 9, the air suction device 8 and the exhaust pipe 52 are in interference fit, the air suction device 8 is connected together in a plug-and-play mode through a flexible pipe with certain elasticity, the air suction device 8 is pulled out, then a proper amount of coffee beans are put into the baking pot 9 through the top end of the exhaust pipe 52, then the exhaust pipe 52 is connected with the air suction device 8 to ensure the sealing performance of the exhaust pipe 52 and the air suction device 8, then a driving device 4 is controlled to be opened by controlling a stir-frying switch 21, the driving device 4 starts to rotate, at the moment, the driving device 4 drives a driving wheel 41 to rotate, the driving wheel, the rotation of the driving wheel 42 will make the transmission shaft 44 follow the rotation, so that the driving device 4 will drive the transmission shaft 44 to follow the rotation;

it should be noted here that, because the driving shaft 44 is directly connected to the baking pan 9 when the device is baking, the driving shaft 44 is also metal to reach the driving strength, and the driving shaft 44 will also generate heat with the baking pan 9, if the driving shaft 44 is directly connected to the driving device 4, the driving device 4 will be heated by heat transfer to cause the driving device 4 to be damaged quickly, in order to avoid this, the driving wheel 41, the driving wheel 42 and the driving belt 43 of the device cannot be made of metal, especially the driving belt 43 must be made of heat insulating material, such as an endless belt coated with polyurethane or neoprene, and the polyurethane has a very good heat-resistant and heat-insulating effect, and will insulate the heat transfer between the driving wheel 41 and the driving wheel 42; in addition, as shown in fig. 4, the driving device 4 and the transmission parts are all arranged in the rotating equipment chamber 73, and the heating chamber 74 of the rotating equipment chamber 73 is isolated, so that the temperature in the heating chamber 74 of the device is effectively reduced, the temperature is directly baked in the rotating equipment chamber 73, the heating of the driving device 4 is effectively reduced, and the driving device 4 is protected;

in this embodiment, the roasting pan 9 is mounted on 4 roasting pan support rods 6 in the heating chamber 74, and each roasting pan supporting rod 6 is provided with a rotating wheel 61 and a limit supporting wheel 62, the rotating wheel 61 and the limit supporting wheel 62 are guide wheels, therefore, the baking pan supporting rod 6 does not need to rotate, the outer rings of the rotating wheel 61 and the limiting supporting wheel 62 can rotate along with the baking pan 9, the inner ring is fixed on the baking pan supporting rod 6, so that the baking pan 9 can limit and rotate on the baking pan supporting rod 6, moreover, each limit support wheel 62 is provided with a groove, as shown in fig. 3, the groove on the limit support wheel 62 is in clamping fit with a limit ring 93, the limit ring 93 is mounted in the groove of the limit support wheel 62 to rotate, so that the baking pan 9 is prevented from sliding left and right, and the baking pan 9 can rotate more stably;

after the roasting pot 9 starts to rotate, coffee beans placed inside start to roll in the roasting pot 9 under the action of gravity, the stirring blades 91 in the roasting pot 9 can destroy the rotation regularity of the coffee beans, so that the coffee beans are irregularly and uniformly rolled and stirred in the inner cavity of the roasting pot 9, as shown in fig. 7, the coffee beans can be uniformly heated during roasting, each surface can be heated more fully, the coffee beans cannot be superposed together, water vapor of the coffee beans is easy to disperse, the water vapor cannot be accumulated together, and the coffee beans are prevented from being covered and damaged by the water vapor;

after the coffee beans start to rotate, the fire switch 22 is controlled to turn on the electric heater 71, so that the electric heater 71 starts to heat the roasting pan, the electric heater 71 extends from the right side of the cover 5 to the isolation between the heating chamber 74 and the rotating device chamber 73, that is, the electric heater 71 is horizontally arranged at the bottom of the roasting pan 9, as shown in FIG. 4, and is distributed over the entire heating chamber 74 in the left-right direction, so that the electric heater 71 can uniformly heat the bottom of the roasting pan 9, thus forming the hottest bottom of the roasting pan 9, the roasting pan 9 rotates all the time, so that the roasting pan 9 is heated uniformly, and the electric heaters 71 are not required to be distributed at all positions of the roasting pan 9 for roasting with fire, so that the device effectively utilizes the rotating power of the roasting pan 9, and the heating of the roasting pan 9 and the roasting of the coffee beans are heated more uniformly; then, the power of the electric heater 71 is controlled by the fire adjuster 24, so that the heating amount of the electric heater 71 can be controlled, so that the coffee beans are roasted by different fire power, and the fire power adjustment during roasting is convenient, and belongs to the conventional setting of the electric heater 71;

fresh coffee beans which are heated are rich in moisture, when the coffee beans are heated and roasted by the electric heater 71, the moisture can be roasted and discharged, the roasting pot 9 of the device is a relatively sealed environment, one side of the roasting pot is provided with a pot bottom and is positioned in the shell 1, the other side of the roasting pot is blocked by the cover plate 5 and is positioned in a relatively closed environment, so that the coffee beans are stewed if water vapor is not discharged, the roasting taste of the coffee beans is seriously influenced, therefore, the air suction device 8 needs to be opened through the smoke exhaust switch 23, the air suction device 8 sucks damp hot air in the roasting pot 9 through the exhaust pipe 52, negative pressure is formed in the roasting pot 9, air outside the roasting pot 9 enters the interior through the ventilation hole 92, so that the outside air enters the roasting pot 9 under the suction force of the air suction device 8, the air firstly enters the device from the shell air inlet 12 outside the shell 1, then the air sucked by the shell air inlet 12 is bundled together and enters the air inlet bundling tube 7 to avoid the air flow from running out, the shell air inlet 12 is not communicated with the heating chamber 74, the shell air inlet 12 is directly communicated with the air inlet bundling tube 7, then the external cold air flows in the air inlet bundling tube 7 and then passes through the heating extension tube 72, the heating extension tube 72 is a metal tube, the diameter of the tube is small, the air flows in the heating extension tube 72, and the heating extension tube 72 is bent, so that when the air flows through the heating extension tube 72, the air is heated by the electric heater 71 near the heating extension tube 72, therefore, the new air is not cold air but hot air, although the temperature of the interior of the roasting pot 9 is far below, but is not cold air, the coffee beans in the roasting pot 9 are not suddenly cooled, and the water vapor is not condensed into water by the cold air again, therefore, the water vapor in the roasting pot 9 and the silver skin removed when the coffee beans are roasted can be taken away more conveniently, air can enter the roasting pot 9 from the ventilating holes 92 at the bottom of the roasting pot 9, and the heat extension pipe 72 is aligned with the bottommost side of the bottom of the roasting pot 9, so that new dry air can enter the roasting pot 9, no matter how the roasting pot 9 rotates during roasting of the coffee, external air always enters the roasting pot 9 from the ventilating holes 92 at the bottommost side of the bottom of the roasting pot 9, then fresh dry hot air can enter the roasting pot 9 with negative pressure, the aim of ventilating in the roasting pot 9 is achieved, the silver skin removed during roasting of the coffee beans can be taken away during ventilating, the silver skin is finely crushed, the silver skin is very light and easy to be taken away, and air channel blockage cannot be caused; the air inlet device can isolate the roasting pot 9 from the outside air, and the inlet fresh air is hot, so that the coffee beans are not suddenly cooled during roasting, the temperature stability of the coffee beans during roasting is ensured, which is the problem that the common small coffee roasting machines can not be realized, the common household coffee bean roasting machines are not thermally isolated but communicated with the outside, so that the temperature of the coffee beans during roasting can not be ensured at all, and the roasting effect can not be controlled, the device solves the problem that the temperature control is more accurate, no cold air enters during roasting, the effect is better, the temperature and the humidity in the roasting pot 9 can be known at any time through the sensor display 26 according to the monitoring of the temperature and humidity sensor 56, so as to control the firepower and the wind power, and the timer 27 can constantly record the time when the coffee beans start to be roasted and the roasting duration time, if the humidity is too high, the air suction power of the air suction device 8 can be increased through the air pressure regulator 25, and the water vapor in the baking pan 9 can be taken away more quickly; if the temperature is too high, the wind power of the air suction device 8 can be increased, and the heat productivity of the electric heater 71 can be properly reduced at the same time, so that the temperature and the humidity in the roasting pot 9 can be controlled to be kept stable, the roasting humidity and the temperature can be adjusted according to different roasting requirements of coffee beans, the coffee beans with proper taste can be roasted, and the coffee beans with different tastes can be roasted according to personal preferences by adjusting the roasting temperature, the roasting humidity and the time;

the flip cover 11 of the device is connected to the shell 1 through the hinge, can be opened, and after the flip cover is opened, the flip cover has an opening communicated with the inner cavity of the shell, so that the roasting pot 9 and the transmission shaft 44 can be detached, then the roasting pot 9 is taken out from the flip cover 11, the roasting pot 9 is cleaned and is stored after being cleaned when not in use, and the device is suitable for household design, and the large coffee bean roasting machine does not need to be provided, and sundries in the shell 1 can be cleaned through the flip cover 11.

The inner walls of the shell 1 and the flip cover 11 of the device are filled with heat insulation cotton 111, as shown in fig. 4, the device has better heat insulation effect and is not easily influenced by factors such as external wind power, temperature and the like, the device can achieve a coffee bean baking mode of semi-direct fire and semi-hot wind, and the baking mode of the device avoids temperature drop when the baking pot 9 is baked, so that the stability and accuracy of baking temperature can be better controlled, the experimental baking temperature, humidity and time can be recorded more easily, external factors can be better controlled, and the purpose of stable baking can be achieved.

It should be noted that some rotation states of the dynamic mechanism related to this device, regarding the door closing mechanism 3, the door closing mechanism 3 includes a rotating wheel 31, a rotating rod 32, a first connecting rod 33, a second connecting rod 34 and a third connecting rod 35, the rotating wheel 31 is fixedly connected with the rotating rod 32, one end of the rotating rod 32 fixed with the first connecting rod 33 can rotate but cannot move is installed on the cover plate 5, the third connecting rod 35 is fixedly connected with the top cross rod of the discharging door 53, one end of the third connecting rod 35 fixed with the discharging door 53 can rotate but cannot move is installed on the cover plate 5, the movable end of the first connecting rod 33 and the movable end of the third connecting rod 35 are respectively connected to two ends of the second connecting rod 34 through rotating shafts, the second connecting rod 34 is not connected with the cover plate 5, the second connecting rod 34 is not connected with the rotating wheel 31, the rotating rod 32, the first connecting rod 33, the second connecting rod 34, The third connecting rod 35 and the discharging door 53 form a plane four-bar mechanism, the mechanism belongs to a common mechanical structure, simply speaking, the opening or closing of the discharging door 53 can be controlled by rotating the rotating wheel 31, the use is more convenient, the discharging door 53 is opened during discharging, the roasted coffee beans can be rotationally taken out from the discharging port 57 under the rotation of the roasting pot 9 and then fall down through the flow guide nozzle 51, and the coffee beans cannot run randomly and fall down at a specified position along the direction of the flow guide nozzle 51 due to the limitation of the flow guide nozzle 51, so that the coffee beans are convenient to store; the discharge port 57 can be tightly matched by the sealing cover 531 on the discharge door 53, the discharge port 57 is completely filled by the sealing cover 531 when the discharge door 53 is closed, coffee beans are prevented from falling on the discharge port 57 when the roasting pot 9 rotates for roasting, although the probability is very small, the possibility is completely eradicated by the sealing cover 531, the coffee beans cannot fall in the filled discharge port 57, each coffee bean in the roasting pot 9 can be effectively roasted, the situation that several coffee beans are not roasted is avoided, and the taste of the whole pot of coffee beans is damaged after the coffee beans are ground into powder;

the cover plate 5 of the device is also provided with a sampling port 54, the sampler 55 is inserted into the sampling port 54 all the time, as shown in fig. 1, the handle 552 is exposed outside the cover plate 5 and cannot be heated, the sampler 55 can be made of heat-insulating and scald-proof materials, the clamping piece 553 can be clamped outside the sampling port 54, because the area of the sampling port 54 is smaller than that of the clamping piece 553, the sampler 55 cannot fall into the baking pan 9, one side of the clamping piece 553 close to the sampling cavity 551 is provided with a sealing ring which can completely seal the sampling port 54 and avoid air leakage of the baking pan 9, the sampling cavity 551 of the sampler 55 is a hollowed semi-cylinder, as shown in fig. 8, the sampler 55 is obliquely inserted into the sampling port 54, when the sampling cavity 551 is used for sampling, coffee beans are not easy to fall off, and in order to avoid the rotation of the baking pan 9, coffee beans fall into the sampling cavity 551 and are not stir-fried, and when the coffee beans are not sampled, the opening of the sampling cavity 551 needs to be downwards inserted into the sampling port 54;

the present invention structurally allows a small-sized assembly of an original large-sized coffee bean roasting machine by changing the structure of the roasting pan 9, the former large-sized coffee bean roasting machine needs to pass through a rotating shaft on the axis of the roasting pan 9 for supporting and driving the large-sized roasting pan to rotate in a balanced manner in order to roast more coffee beans at a time and to maintain the uniform roasting degree, the roasting pan 9 is directly erected on the rotating shaft and locked on the rotating shaft, and a plurality of stirring blades need to be added on the rotating shaft for uniform stirring, the present device uses the roasting pan 9 with a small volume, and the driving shaft cannot be installed inside the present device, such installation and design method is completely not suitable for a small-sized coffee bean roasting machine, and the present device can not roast a small amount of coffee beans by opening the housing 1 through the flip cover 11, the roasting pot 9 can be detached for cleaning, the device also has the advantages that the small roasting machine can roast coffee beans under a closed condition, the device can effectively keep the temperature of the roasted coffee beans without being greatly influenced by outside air in the process of roasting the coffee beans, the stability of the roasting temperature can be kept, the roasting process can be effectively avoided from being too cold and too hot, in the process of discharging moisture generated by roasting the coffee beans, when the outside dry air is pumped into the roasting pot 9, the cold air is preheated in the heating extension pipe 72, the cold air is prevented from directly rushing into the roasting pot 9, the sudden temperature drop of the roasting pot 9 is effectively avoided, the processing temperature and the humidity in the roasting pot 9 are better controlled, and meanwhile, the requirement of the roasting mode of the semi-direct-fire and semi-hot-air coffee beans is met, the baking pan 9 is kept in a relatively isolated environment and is not greatly influenced by the external temperature and humidity, and only the closed processing mode can keep the temperature of the baking pan 9 to ensure that the temperature in the baking pan 9 can reach 300 ℃ uniformly, and only the closed processing mode can ensure that the temperature of the beans in the baking pan 9 can reach 130-150 ℃, if the open type small household coffee bean roasting machine without heat preservation is used, the temperature can only be locally high, the heating is not uniform, even if the open type roasting pot 9 is uniformly rolled, the temperature of the beans can not uniformly reach the high temperature of 100 ℃, moreover, the roasting pan 9 of the device rotates in the same way as the rolling way of a large coffee bean roasting machine, the device has the structure and the volume of a small coffee bean roasting machine, and simultaneously has the effect and the roasting process of a large coffee bean roasting machine.

In addition, it should be noted that:

the air suction device 8 is a fan, is controlled to be opened or closed by a smoke discharge switch 23, and controls the power of the fan by an air regulator 25 to regulate the wind power;

the driving device 4 is a motor and is controlled to be turned on or off by a stir-frying switch 21;

the electric heater 71 is a carbon fiber heating pipe, is controlled to be turned on or turned off by the fire switch 22, and controls the heating power by the fire regulator 24;

these are all common electric appliances, and are all existing devices, and the models are numerous, and are not the research and development direction of this device, and will not be described herein.

Coffee beans used for making coffee are actually seeds inside coffee fruits, and have structures such as an exocarp, a pulp, a pectin, an endocarp, and a silverskin on the outer layer of the seeds, and the purpose of processing is to remove these external structures to obtain coffee seeds inside, and the silverskin (Silver Skin/Chaff): a thinner film is also arranged in the parchment paper to wrap the coffee beans, and people are habitually called as 'silvery skin' because the color of the parchment paper is rich in luster and silvery. The silvery skin can fall off during roasting, and usually, when the coffee is ground, a little silvery scraps in the coffee powder are found, the scraps are the silvery skin which cannot be peeled from coffee beans during roasting, and the silvery skin can bring astringent taste, if the quantity of the silvery skin is not large, the influence is not great, and if the quantity of the silvery skin is too large, the taste of the coffee is sour and astringent, so that the taste of the coffee beans is not good;

the air suction device 8 of the device is a general fan with blades, not a turbine fan, the large-opening fan with the blades is convenient for removing the silvery skin which is removed when the coffee beans are roasted, the blades are large, the silvery skin is not easy to hang on the blades, and the turbine fan is easy to hang the silvery skin and is difficult to clean.

The base 2 is provided with a stir-frying switch 21, a fire switch 22, a fan switch 23, a fire adjuster 24, an air adjuster 25, a sensor display 26 and a timer 27, the fire adjuster 24 and the air adjuster 25 are arranged on a conventional electric appliance, the fire adjuster 24 can control the power of the electric heater 71, and the air adjuster 25 can control the wind power of the fan of the air suction device 8.

Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments of the invention described are illustrative only and are not limiting to the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be covered by the appended claims.

Claims (10)

1. A small-sized closed coffee bean roasting machine is characterized in that: it includes:

the device comprises a shell (1) and a base (2), wherein the shell (1) is a sealed box body, a turnover cover (11) is locked on the shell (1) in an opening mode, the shell (1) is stably and fixedly arranged on the base (2), and a stir-frying switch (21), a fire switch (22), a smoke exhaust switch (23) and a sensor display (26) are arranged on the base (2);

the air conditioner comprises a cover plate (5), wherein the cover plate (5) is fixed on one side of a shell (1) in a sealing mode, a plurality of shell air inlets (12) are uniformly formed in one side, close to the cover plate (5), of the shell (1), a discharge hole (57) is formed in the cover plate (5), a discharge door (53) can be opened and closed on the discharge hole (57), an exhaust pipe (52) is further arranged on the cover plate (5), and a temperature and humidity sensor (56) is further mounted on the cover plate (5);

the door closing mechanism (3) controls the opening or closing of the discharging door (53) outside the shell (1);

the baking pan (9) is of a cylindrical structure with an opening at one side, a plurality of ventilation holes (92) are uniformly formed in one side of the closed pan bottom of the baking pan (9), the baking pan (9) can be rotatably erected in the inner cavity of the shell (1), the opening side of the baking pan (9) and the axis of the pan bottom are in the same straight line and are horizontally arranged, the cover plate (5) abuts against and covers the opening side of the baking pan (9), and the cover plate (5) is in clearance fit with the baking pan (9);

the driving device (4), the said driving device (4) is the power source that the baking pan (9) rotates;

the air inlet bundling tube (7) is arranged in the shell (1), a plurality of shell air inlets (12) are communicated with air inlets of the air inlet bundling tube (7), an air outlet of the air inlet bundling tube (7) is connected with a heating extension tube (72), an electric heater (71) is further arranged in the shell (1), the electric heater (71) is arranged close to the baking pan (9), the heating extension tube (72) is also arranged close to the electric heater (71), and an air outlet of the heating extension tube (72) and a ventilation hole (92) in the pan bottom of the baking pan (9) are in the same cavity;

the air suction device (8), the air suction port of the air suction device (8) is communicated with the outlet of the exhaust pipe (52) in a separable way, and the inlet of the exhaust pipe (52) is communicated with the inner cavity of the baking pan (9);

getter device (8) are connected with external power supply electricity through switch (23) of discharging fume, drive arrangement (4) are connected with external power supply electricity through turning over stir-fry switch (21), electric heater (71) are connected with external power supply electricity through firepower switch (22), sensor display (26) and temperature and humidity sensor (56) data connection, sensor display (26) are connected with external power supply electricity.

2. A miniature closed coffee bean roaster as claimed in claim 1, wherein: plural number root baking pan bracing piece (6), every have been erect to level in shell (1) baking pan bracing piece (6) is gone up and is installed one at least and rotate wheel (61) and one spacing supporting wheel (62), it all is the guide pulley to rotate wheel (61) and spacing supporting wheel (62), a draw-in groove has been seted up on the outer lane of spacing supporting wheel (62), baking pan outer lane epirelief is equipped with spacing ring (93), spacing ring (93) can the pivoted card establish in spacing supporting wheel (62) draw-in groove.

3. A miniature closed coffee bean roaster as claimed in claim 1, wherein: the inner cavity of the shell (1) consists of a rotating equipment chamber (73) and a heating chamber (74), the electric heater (71) is horizontally and uniformly distributed on the whole heating chamber (74), the electric heater (71) is arranged right below the baking pan (9), the air outlet of the heat extension pipe (72) is tightly close to the outside of the lowest ventilation hole (92), the aperture of the ventilation hole (92) is less than three millimeters, the exhaust pipe (52) is arranged at the top of the opening side of the baking pan (9), the electric heater (71) is a carbon fiber heating pipe, and the electric heater (71) horizontally extends to the position below the air outlet of the heat extension pipe (72) from the opening end of the baking pan.

4. A miniature closed coffee bean roaster as claimed in claim 2, wherein: the baking pot is characterized in that the driving device (4) is a motor, a driving wheel (41) is fixed on the output end of the driving device (4), the driving wheel (41) is connected with a driving wheel (42) through a driving belt (42), the driving wheel (42) is fixedly connected with a transmission shaft (44), and the other end of the transmission shaft (44) is detachably connected to the circle center outside the bottom of the baking pot (9) through a bolt.

5. A miniature closed coffee bean roaster as claimed in claim 1, wherein: there is an opening at shell (1) top, flip (11) pass through the hinge mount on shell (1), flip (11) cover the open-top department at shell (1), the length and the width of baking pot (9) all are less than flip (11) and open length and the width at back shell (1) top, flip (11) and shell (1) inner wall have all covered thermal-insulated cotton (111), thermal-insulated cotton (111) do not block shell air inlet (12).

6. A miniature closed coffee bean roaster as claimed in claim 1, wherein: still fixed water conservancy diversion mouth (51) on apron (5), water conservancy diversion mouth (51) are open-top's slot column structure, the open-top of water conservancy diversion mouth (51) is tightly in discharge door (53) bottom, sample connection (54) have been seted up to the downward sloping on apron (5), sample connection (54) and the inner chamber intercommunication of baking pan (9), the interpolation of internal energy separation of sample connection (54) is equipped with sampler (55).

7. A miniature closed coffee bean roaster as claimed in claim 6, wherein: sampler (55) is the shaft-like structure, sample chamber (551) have been seted up to the one end of sampler (55), the other end of sampler (55) is grab handle (552), card position piece (553) have set firmly on the middle section of sampler (55), the left side of card position piece (553) on sampler (55) is straight cylindric structure, the left side and the sample connection (54) of sampler (55) are clearance fit, card position piece (553) cover whole sample connection (54), sample connection (54) can't be passed to card position piece (553).

8. A miniature closed coffee bean roaster as claimed in claim 1, wherein: door closing mechanism (3) include runner (31), dwang (32), first connecting rod (33), second connecting rod (34) and third connecting rod (35), runner (31) and dwang (32) fixed connection, but install on apron (5) that can rotate but unable removal in dwang (32) and the fixed one end of first connecting rod (33), third connecting rod (35) and the top horizontal pole fixed connection of discharge door (53), third connecting rod (35) can rotate but unable removal with the fixed one end of discharge door (53) and install on apron (5), the both ends at second connecting rod (34) are all connected respectively through the pivot to the expansion end of first connecting rod (33) and the expansion end of third connecting rod (35), second connecting rod (34) are not connected with apron (5), runner (31), dwang (32), first connecting rod (33), The second connecting rod (34), the third connecting rod (35) and the discharging door (53) form a plane four-bar mechanism.

9. A miniature closed coffee bean roaster as claimed in claim 1, wherein: still fixed airtight lid (531) on discharge door (53), when discharge door (53) are closed, airtight lid (531) are clogged in discharge gate (57), the gap between apron (5) and baking pan (9) is less than two millimeters.

10. A miniature closed coffee bean roaster as claimed in claim 1, wherein: the base (2) is further provided with a timer (27), the timer (27) is electrically connected with the electric heater (71), and the air suction device (8) is a fan.

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