Coffee bean microwave baking machine

Abstract

The invention relates to the field of baking, in particular to a coffee bean microwave baking machine which comprises a baking mechanism. The baking mechanism comprises a metal shell, a wave-transparent container placed in the metal shell and a microwave generating device installed outside the metal shell. And the other side of the metal shell is provided with a door which can be opened and closed and is used for taking and placing the wave-transparent container. According to the coffee bean baking method, the coffee beans are baked by adopting microwave heating, the microwave baking technology is characterized in that electromagnetic waves penetrate through the coffee beans, water molecules vibrate to generate heat, so that the baking effect is achieved, and the original flavor and nutritional ingredients of the coffee beans can be better reserved. Meanwhile, the penetrability and uniformity of microwave heating are good, the coffee beans on the outer layer and the inner layer are heated at the same time, even if the limited penetration depth and the energy distribution characteristic of microwaves are considered, the temperature difference between the coffee beans on the inner layer and the outer layer is small, the overall baking effect cannot be greatly influenced, and therefore all the coffee beans have the good baking quality.

Description

Technical Field

[0001] The invention relates to the field of roasting, and in particular to a coffee bean microwave roasting machine. Background Art

[0002] With the acceleration of modern life, people's demand for coffee is growing. Coffee (English name: coffee) is a beverage made from roasted and ground coffee beans. The coffee we drink every day is made from coffee beans with various cooking utensils, and coffee beans refer to the kernels inside the fruit of the coffee tree, which are then roasted using appropriate methods. Only after roasting can coffee beans become coffee beans for grinding and drinking.

[0003] Coffee bean roasters are mainly divided into four categories: direct fire type, semi-hot air direct fire type, hot air type, and electric heating type. However, the existing devices for roasting coffee beans can often only roast the coffee beans on the outermost part, and the coffee beans located inside are often not roasted very well, resulting in uneven roasting of the coffee beans as a whole, unsatisfactory roasting effect, and poor roasting quality. Summary of the invention

[0004] In view of this, the present invention provides a coffee bean microwave roaster, aiming to achieve uniform roasting of coffee beans and ensure the roasting quality of coffee beans.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A coffee bean microwave roaster comprises a roasting mechanism; the roasting mechanism comprises a metal shell, a wave-transmitting container placed in the metal shell, and a microwave generating device installed outside the metal shell; one side of the metal shell is provided with a microwave feeding port, the microwave generating device is installed at the microwave feeding port, and the microwave generating device is used to feed microwaves into the metal shell; the other side of the metal shell is provided with an openable and closable door for taking in and placing the wave-transmitting container.

[0007] In some optional embodiments, it also includes a driving mechanism; the driving mechanism includes a driving motor, a driving shaft, a driven shaft and a spiral stirring blade; the driving motor is installed below the metal shell; the lower end of the driving shaft is transmission connected to the driving motor, and the upper end passes through the bottom of the metal shell and extends to the interior of the wave-transmitting container; the driven shaft is arranged in the wave-transmitting container; the lower end of the driven shaft is transmission connected to the upper end of the driving shaft and the two are detachably connected; the spiral stirring blade is connected to the driven shaft.

[0008] In some optional embodiments, the spiral stirring blade has a plurality of protrusions.

[0009] In some optional embodiments, the top of the spiral stirring blade has a baffle and a notch.

[0010] In some optional embodiments, the driving mechanism further includes a retaining frame; the retaining frame is detachably mounted on the top of the wave-transmitting container; and the top end of the driven shaft is rotatably connected to the retaining frame.

[0011] In some optional embodiments, the driving mechanism further includes a base and fan blades; the base is disposed in the metal shell and below the wave-transmitting container; the base has a channel running through it from top to bottom, the fan blades are located in the channel and mounted on the driving shaft; the bottom of the wave-transmitting container has a plurality of through holes.

[0012] In some optional embodiments, an epidermis collection device is also included; the epidermis collection device includes a delivery pipe and an epidermis collection box; one end of the delivery pipe is connected to the top of the wave-transmitting container, and the other end is connected to the epidermis collection box; the epidermis collection box has a plurality of exhaust holes.

[0013] In some optional embodiments, the epidermal collection device also includes a collection tube; one end of the collection tube has a trumpet-shaped opening and is connected to the top of the wave-transmitting container, and the other end extends outside the metal shell and is connected to the end of the delivery tube away from the epidermal collection box.

[0014] In some optional embodiments, the spiral stirring blade has a plurality of ventilation holes.

[0015] In some optional embodiments, one side of the metal shell has an opening, and a temperature sensor and a grayscale sensor are installed in the opening.

[0016] In summary, compared with the prior art, the present invention has the following advantages and beneficial effects: the present invention uses microwave heating to roast coffee beans. The microwave roasting technology achieves the effect of roasting by penetrating the coffee beans with electromagnetic waves and generating heat through the vibration of water molecules. This method can better preserve the original flavor and nutrients of the coffee beans. At the same time, the penetration and uniformity of microwave heating are good. The outer and inner layers of coffee beans are heated at the same time. Even considering the limited penetration depth of microwaves and the energy distribution characteristics, the temperature difference between the inner and outer layers of coffee beans is small, which will not have a great impact on the overall roasting effect, so that all coffee beans have good roasting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a front view structural schematic diagram of the present invention.

[0019] Figure 3 for Figure 2 Schematic diagram of the cross-section structure in the AA direction. Figure 3 The relevant structures of the delivery tube and the epidermis collection box are omitted.

[0020] Figure 4 It is a schematic diagram of the assembly relationship between the spiral stirring blade and the driven rotating shaft in the present invention.

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the epidermal collection device in the present invention.

[0022] The meanings of the numbers in the figure are: base 1, driving mechanism 2, bracket 21, driving motor 22, driving shaft 231, driven shaft 232, base 24, fan blades 25, spiral stirring blades 26, air holes 261, protrusions 262, baffles 263, notches 264, retaining frame 27, baking mechanism 3, metal shell 31, microwave feed port 32, door 33, opening 34, wave-transmitting container 35, epidermis collection device 4, collection pipe 41, conveying pipe 42, epidermis collection box 43, exhaust holes 44, controller and display panel 5. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there are any descriptions of "first", "second" and the like, they are only used for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] like Figure 1 and Figure 2As shown, a coffee bean microwave roasting machine described in an embodiment of the present application mainly includes a roasting mechanism 3.

[0028] like Figure 3 As shown, the baking mechanism 3 mainly includes a metal shell 31, a wave-transmitting container 35 and a microwave generating device.

[0029] The metal shell 31 can be made of a box-shaped metal such as stainless steel that is easy to keep clean, and has a cavity inside to place other mechanisms such as a wave-transmitting container 35. One side (such as the right side) of the metal shell 31 has a microwave feed port 32, and a microwave generator (the microwave generator is not shown in the drawings) is installed at the microwave feed port 32. The microwave generator is located outside the metal shell 31 and is mainly used to feed microwaves into the cavity inside the metal shell 31 to heat coffee beans. The other side (such as the front side) of the metal shell 31 has an openable and closable door 33, and the main function of this door 33 is to take and place the wave-transmitting container 35.

[0030] The microwave-transmissive container 35 is made of a material that microwaves can pass through, such as glass, and is made into a barrel shape, and is used to hold coffee beans.

[0031] When roasting is required, the door 33 of the metal shell 31 is opened, the wave-transmitting container 35 is taken out, the coffee beans are put into the wave-transmitting container 35 and then put into the metal shell 31, and then the door 33 is closed. Then, the microwave generator is turned on, so that the coffee beans in the wave-transmitting container 35 absorb the energy of the microwave and heat up, thereby achieving the roasting effect. After the roasting is completed, the door 33 of the metal shell 31 is opened again, the wave-transmitting container 35 is taken out, and the roasted coffee beans can be poured out from the wave-transmitting container 35.

[0032] The embodiment of the present application uses microwave heating to roast coffee beans. Microwave roasting technology achieves the roasting effect by penetrating coffee beans with electromagnetic waves and generating heat through the vibration of water molecules. This method can better preserve the original flavor and nutrients of coffee beans. At the same time, microwave heating has good penetration and uniformity. The outer and inner layers of coffee beans are heated at the same time. Even considering the limited penetration depth of microwaves and the energy distribution characteristics, the temperature difference between the inner and outer layers of coffee beans is small, which will not have a big impact on the overall roasting effect, so that all coffee beans have good roasting quality.

[0033] In order to further eliminate the temperature difference between the inner and outer layers of coffee beans, Figure 1 As shown, the coffee bean microwave roasting machine described in the embodiment of the present application may also include a driving mechanism 2.

[0034] like Figure 3 As shown, the driving mechanism 2 may include a driving motor 22 , a driving shaft 231 , a driven shaft 232 and a spiral stirring blade 26 .

[0035] The drive motor 22 is vertically installed below the metal shell 31. In order to ensure that the drive motor 22 has enough installation space, a base 1 can be connected below the metal shell 31, and the drive motor 22 can be installed on the base 1 through, for example, a bracket 21.

[0036] The driving shaft 231 is vertically arranged, and the lower end of the driving shaft 231 is drivingly connected to the driving motor 22 , and the upper end of the driving shaft 231 passes through the bottom of the metal shell 31 and the bottom of the wave-transmitting container 35 and then extends to the interior of the wave-transmitting container 35 .

[0037] The driven shaft 232 is located in the wave-transmitting container 35. The driven shaft 232 is also arranged vertically, and the driven shaft 232 is arranged coaxially with the driving shaft 231. The lower end of the driven shaft 232 is drivingly connected to the upper end of the driving shaft 231, and the two are detachably connected, for example, by plug-in, snap-on or screw-on connection.

[0038] The spiral stirring blade 26 is connected to the driven rotating shaft 232 .

[0039] The main function of the driving mechanism 2 is to stir the coffee beans in the wave-transmitting container 35. As the driving motor 22 operates, the spiral stirring blades 26 rotate in the wave-transmitting container 35, thereby disrupting the position of the coffee beans in the wave-transmitting container 35 so that the coffee beans will not stay in the same position for a long time. In this way, the coffee beans will be heated more evenly, and the temperature of all the coffee beans will tend to be consistent, so that they are roasted evenly and the roasting quality is better.

[0040] The driving mechanism 2 may further include a holder 27, which may be detachably mounted on the top of the wave-transmitting container 35, for example, by a snap-on method. The top end of the driven shaft 232 is rotatably connected to the holder 27. The holder 27 can provide good support for the top end of the driven shaft 232, thereby ensuring that the spiral stirring blade 26 rotates more smoothly.

[0041] When the spiral stirring blade 26 rotates, some coffee beans are squeezed by other coffee beans and move upward along the surface of the spiral stirring blade 26, so that the coffee beans are heated more evenly. Figure 4 As shown, a plurality of protrusions 262 may be provided on the spiral stirring blade 26. These protrusions may prevent the coffee beans from sliding downward along the surface of the spiral stirring blade 26 under the action of gravity, so that the coffee beans can be driven by the spiral stirring blade 26 to a higher position and then fall, thereby enhancing the stirring effect.

[0042] The spiral stirring blade 26 spirally rises from bottom to top, and the outer edge may preferably be slightly protruding upward to prevent the coffee beans from falling midway and to drive as many coffee beans as possible to move upward.

[0043] A baffle plate 263 and a notch 264 may also be provided on the top of the spiral stirring blade 26. The baffle plate 263 may guide the coffee beans to fall out along the notch 264, preventing too many coffee beans from being accumulated on the spiral stirring blade 26.

[0044] After the coffee beans are roasted, they need to be cooled. As an optional cooling method, such as Figure 3 As shown, the driving mechanism 2 may further include a base 24 and a fan blade 25. The base 24 is disposed in the metal shell 31 and is located below the wave-transmitting container 35. The base 24 has a vertically penetrating passage inside, and the fan blade 25 is located in the passage and mounted on the driving shaft 231. The bottom of the wave-transmitting container 35 has a plurality of through holes.

[0045] The driving motor 22 can drive the fan blades 25 to rotate while driving the spiral stirring blades 26 to rotate, so that the fan blades 25 generate upward blowing air, and the air passes through the channel of the base 24 and the through hole of the wave-transmitting container 35 in turn, enters the wave-transmitting container 35, and cools the coffee beans. Another advantage of this structural design is that the driving motor 22 can drive the spiral stirring blades 26 and the fan blades 25 to rotate at the same time, which saves energy and makes the structure of the entire device more compact.

[0046] At the same time, a plurality of ventilation holes 261 may be provided in the spiral stirring blade 26 so that the air generated by the fan blade 25 can blow through the spiral stirring blade 26, thereby enhancing the cooling effect and efficiency.

[0047] The driving shaft 231, the driven shaft 232, the spiral stirring blade 26, the retaining frame 27, the base 24 and the fan blade 25 are preferably made of non-metallic materials, such as polyurethane, to reduce reflection of microwaves.

[0048] In addition, during the roasting process, the skin of coffee beans will fall off. The embodiment of the present application also designs a skin collection device 4 to collect the fallen skin. Figure 1 and Figure 5 As shown, the epidermis collection device 4 may include a delivery pipe 42 and an epidermis collection box 43. One end of the delivery pipe 42 is connected to the top of the wave-transmitting container 35. If a retaining frame 27 is installed on the top of the wave-transmitting container 35, a plurality of through holes may be provided on the retaining frame 27, and the other end of the delivery pipe 42 is connected to the epidermis collection box 43. The epidermis collection box 43 has a plurality of exhaust holes 44.

[0049] When the fan blades 25 blow air upward, the detached epidermis will continue to move upward with the air flow and enter the conveying pipe 42, and finally enter the collection box 43 along the conveying pipe 42. The air flow will be discharged outward from the exhaust hole 44, and the epidermis will remain in the collection box 43.

[0050] To make it easier to collect the shed epidermis, Figure 3 and Figure 5 As shown, the epidermis collecting device 4 may also include a collecting pipe 41. One end of the collecting pipe 41 has a trumpet-shaped opening and is connected to the top of the wave-transmitting container 35. If a retaining frame 27 is installed on the top of the wave-transmitting container 35, it is connected to the through hole on the retaining frame 27. The other end of the collecting pipe 41 extends outside the metal shell 31 and is connected to the end of the delivery pipe 42 away from the epidermis collecting box 43. Through the trumpet-shaped opening of the collecting pipe 41, the airflow is easier to enter the delivery pipe 42, that is, the epidermis is easier to enter the delivery pipe 42.

[0051] The air holes 261 on the spiral stirring blade 26 also help to blow air to blow the skin upwards.

[0052] The embodiment of the present application may further include a set of controllers and display panels 5, and the microwave generator and the drive motor 22 are both electrically connected to the controller and display panel 5. The controller and display panel 5 can control the opening and closing and power of the microwave generator and the drive motor 22, and display information such as the power and working time of the microwave generator, the speed of the drive motor 22 (that is, the speed of the spiral stirring blade 26 and the size of the wind force generated by the fan blade 25), thereby improving the convenience of operation.

[0053] like Figure 3 As shown, an opening 34 can also be opened on one side (for example, the rear side) of the metal shell 31, and a temperature sensor and a grayscale sensor can be installed in the opening 34, and both the temperature sensor and the grayscale sensor are electrically connected to the controller and the display panel 5. The temperature sensor can detect the temperature inside the metal shell 31, mainly the temperature of the coffee beans. The structure of the grayscale sensor mainly includes a light-emitting diode and a photosensitive element. The light-emitting diode can emit light and irradiate the surface of the coffee beans. The photosensitive element can detect the reflected light and output a digital signal. The grayscale sensor mainly feeds back the degree of roasting on the surface of the coffee beans. The information detected by the temperature sensor and the grayscale sensor is converted into a digital signal for display on the controller and the display panel 5, which is helpful to assist in judging whether the coffee beans are roasted in place.

[0054] It should be noted that some grayscale sensors do not have light-emitting diodes. In this case, an additional set of light sources can be set inside the metal shell 31, for example, the light source can be set at the top inside the metal shell 31 to provide light for the coffee beans.

[0055] The temperature sensor and the grayscale sensor can also be combined with the microwave generator to realize automatic control. The controller and the display panel 5 automatically adjust the microwave power of the microwave generator according to the collected temperature and grayscale information, so as to realize the roasting of coffee beans more accurately, intelligently and labor-savingly.

[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above preferred embodiments shall not be regarded as limiting the present invention, and the protection scope of the present invention shall be subject to the scope defined by the claims. For those skilled in the art, several improvements and modifications may be made without departing from the spirit and scope of the present invention, and such improvements and modifications shall also be regarded as the protection scope of the present invention.

Claims

1. A coffee bean microwave roasting machine, characterized in that: comprising a baking mechanism (3); The baking mechanism (3) comprises a metal shell (31), a wave-transmitting container (35) placed in the metal shell (31), and a microwave generating device installed outside the metal shell (31); One side of the metal shell (31) is provided with a microwave feeding port (32), the microwave generating device is installed at the microwave feeding port (32), and the microwave generating device is used to feed microwaves into the interior of the metal shell (31); The other side of the metal shell (31) is provided with an openable and closable door (33) for taking in and placing the wave-transmitting container (35).

2. The coffee bean microwave roasting machine according to claim 1, characterized in that: It also includes a driving mechanism (2); the driving mechanism (2) includes a driving motor (22), a driving rotating shaft (231), a driven rotating shaft (232) and a spiral stirring blade (26); The driving motor (22) is installed below the metal shell (31); The lower end of the driving shaft (231) is drivingly connected to the driving motor (22), and the upper end passes through the bottom of the metal shell (31) and extends into the interior of the wave-transmitting container (35); The driven rotating shaft (232) is arranged in the wave-transmitting container (35); the lower end of the driven rotating shaft (232) is drivingly connected to the upper end of the driving rotating shaft (231), and the two are detachably connected; The spiral stirring blade (26) is connected to the driven rotating shaft (232).

3. The coffee bean microwave roasting machine according to claim 2, characterized in that: The spiral stirring blade (26) has a plurality of protrusions (262).

4. The coffee bean microwave roasting machine according to claim 2, characterized in that: The top of the spiral stirring blade (26) is provided with a baffle (263) and a notch (264).

5. The coffee bean microwave roasting machine according to claim 2, characterized in that: The driving mechanism (2) further comprises a retaining frame (27); the retaining frame (27) is detachably mounted on the top of the wave-transmitting container (35); The top end of the driven rotating shaft (232) is rotatably connected to the retaining frame (27).

6. The coffee bean microwave roasting machine according to claim 2, characterized in that: The driving mechanism (2) further comprises a base (24) and fan blades (25); The base (24) is arranged inside the metal shell (31) and is located below the wave-transmitting container (35); the base (24) has a channel running through it from top to bottom, and the fan blade (25) is located in the channel and is mounted on the driving shaft (231); The bottom of the wave-transmitting container (35) has a plurality of through holes.

7. The coffee bean microwave roasting machine according to claim 6, characterized in that: It also includes an epidermis collection device (4); the epidermis collection device (4) includes a delivery pipe (42) and an epidermis collection box (43); one end of the delivery pipe (42) is connected to the top of the wave-transmitting container (35), and the other end is connected to the epidermis collection box (43); the epidermis collection box (43) is provided with a plurality of exhaust holes (44).

8. The coffee bean microwave roasting machine according to claim 7, characterized in that: The epidermis collection device (4) also includes a collection tube (41); one end of the collection tube (41) has a trumpet-shaped opening and is connected to the top of the wave-transmitting container (35), and the other end extends outside the metal shell (31) and is connected to the end of the delivery tube (42) away from the epidermis collection box (43).

9. The coffee bean microwave roasting machine according to claim 6, characterized in that: The spiral stirring blade (26) is provided with a plurality of ventilation holes (261).

10. The coffee bean microwave roasting machine according to claim 1, characterized in that: One side of the metal shell (31) has an opening (34), and a temperature sensor and a grayscale sensor are installed in the opening (34).

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