Coffee bean baking device

Abstract

The utility model belongs to the field of coffee bean baking, and particularly relates to a coffee bean baking device which comprises a baking tank. A feeding hole is formed in the top of the baking tank; a gas conveying pipe is arranged on the side wall of the baking tank in a penetrating manner; a plurality of air outlet holes are formed in the air delivery pipe; the other wall of the baking tank is fixedly connected with a motor; the output end of the motor is fixedly connected with a rotating shaft; by conveying high-temperature gas into the gas conveying pipe and spraying the high-temperature gas out of the gas outlet holes, coffee beans can be heated when being baked, the gas conveying pipe is submerged by the coffee beans when the coffee beans reach a certain amount, and when the gas conveying pipe is located in the coffee beans, the high-temperature gas is diffused from the interior of the coffee beans; more coffee beans can uniformly absorb heat by heating from the interiors of the coffee beans, and the situation that the baking effect is affected due to uneven heating of the coffee beans in a traditional heating mode is reduced.

Description

Technical Field

[0001] The utility model relates to the field of coffee bean roasting, in particular to a coffee bean roasting device. Background Art

[0002] Coffee bean roasting is a crucial step in the coffee making process. It determines the flavor, aroma, taste and color of the final coffee. The raw coffee beans themselves contain a variety of volatile compounds. These compounds will undergo chemical reactions during the roasting process and transform into attractive aromas, such as caramel and nutty aromas. Roasting can stimulate and release these aromas, making the coffee more tempting.

[0003] Coffee bean roasting is mainly a physical and chemical reaction process. By heating the raw coffee beans, a series of changes are caused inside and outside them, thus generating the unique aroma, flavor and color of coffee. During the roasting process, the moisture inside the coffee beans will begin to evaporate. As the roasting progresses, the moisture gradually decreases and the paper quality reaches a stable level.

[0004] Existing coffee bean roasting devices generally complete the roasting work by heating the coffee beans. The device generally heats the roasting tank body and conducts the heat to the surface of the coffee beans so that the coffee beans absorb the heat. It is found during use and observation that a large amount of coffee beans are easily accumulated inside the roasting tank during the roasting process, resulting in uneven heat absorption by the coffee beans.

[0005] Therefore, in order to solve the above problems, a coffee bean roasting device is proposed. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is: a coffee bean roasting device described in the utility model comprises a roasting tank; a feed port is provided on the top of the roasting tank; an air pipe is penetrated by the side wall of the roasting tank; a plurality of air outlets are provided on the air pipe; a motor is fixedly connected to the other wall of the roasting tank; a rotating shaft is fixedly connected to the output end of the motor; a stirring rod is fixedly connected to the rotating shaft, and the coffee beans can be heated when being roasted by conveying high-temperature gas into the air pipe and spraying it through the air outlet. When the coffee beans reach a certain amount, the coffee beans submerge the air pipe. When the air pipe is located inside the coffee beans, the high-temperature gas diffuses from the inside of the coffee beans. Heating from the inside of the coffee beans can make more coffee beans absorb heat evenly, reducing the situation where the coffee beans are unevenly heated due to traditional heating methods and affecting the roasting effect.

[0008] Preferably, a plurality of elastic rods are fixedly connected to the gas delivery pipe; clamping grooves are formed on the surface of the stirring rod; the elastic rods and the clamping grooves are arranged in correspondence, and when the elastic rods are deformed by contacting the clamping grooves, the coffee beans staying near the gas delivery pipe can be bounced up during the heating of the coffee beans, so that the positions of the coffee beans are constantly changed, and a small amount of coffee beans staying near the gas delivery pipe for a long time, resulting in excessive absorption of heat by the coffee beans and over-roasting, can be reduced.

[0009] Preferably, an elastic screen is fixedly connected to the bottom of the feed inlet; a plurality of mesh holes are formed in the elastic screen; when the coffee beans enter the inside of the roasting tank through the feed inlet, the impurities and oversized coffee beans in the coffee beans can be screened through the mesh holes formed in the elastic screen, and the influence of impurities entering the inside of the roasting tank on the roasting work of the coffee beans can be reduced.

[0010] Preferably, a plurality of convex blocks are fixedly connected to the bottom of the elastic screen; rubber blocks are fixedly connected to the ends of the convex blocks; when the stirring rod contacts the convex blocks, the convex blocks move upward, and when the convex blocks move upward, the elastic screen is driven to move upward at the same time. When the elastic screen moves, the coffee beans that have not fallen into the inside of the roasting tank on the surface of the elastic screen can be shaken off, and at the same time, the up-and-down movement of the elastic screen can also shake off the coffee beans inside the mesh holes, reducing the situation that larger coffee beans stay inside the mesh holes and affect the feeding work.

[0011] Preferably, an exhaust pipe is communicated with the side wall of the roasting tank; an exhaust pump is communicated with the end of the exhaust pipe; when roasting the coffee beans, a small amount of particulate debris will be generated due to the heating of the coffee beans. After the roasting is completed, the exhaust pump is turned on and the particulate debris inside the roasting tank is extracted through the exhaust pipe, reducing the situation that the particulate debris affects the normal roasting work.

[0012] Preferably, a collection bag is fixedly connected to the end of the exhaust pipe; the collection bag is of a net structure; by fixedly connecting a collection bag to the end of the exhaust pipe, the extracted particulate debris can be collected and recycled, reducing the waste of the roasting work.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. For the coffee bean roasting device of the present utility model, by delivering high-temperature gas into the gas delivery pipe and spraying it out through the air outlet holes, heating can be carried out from the inside of the coffee beans when the coffee beans reach a certain amount, reducing the situation that the uneven heating of the coffee beans caused by the traditional heating method affects the roasting effect.

[0015] 2. For the coffee bean roasting device of the present utility model, when the elastic rods are deformed by contacting the clamping grooves, the coffee beans staying near the gas delivery pipe can be bounced up during the heating of the coffee beans, reducing the situation that the coffee beans stay near the gas delivery pipe for a long time, resulting in excessive absorption of heat by the coffee beans and over-roasting. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the main body of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the air delivery pipe in the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the elastic rod in the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the elastic screen in the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the air extraction pipe in the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the stirring rod in the present invention.

[0023] Legend Explanation: 1. Baking tank; 11. Feeding port; 12. Air delivery pipe; 13. Air outlet hole; 14. Motor; 15. Rotating shaft; 16. Stirring rod; 2. Elastic rod; 21. Card slot; 3. Elastic screen; 31. Mesh hole; 4. Convex block; 41. Rubber block; 5. Air extraction pipe; 51. Air extraction pump; 6. Collection bag. Detailed Embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] The following gives specific embodiments.

[0026] As Figures 1 to 6As shown in the figure, a coffee bean roasting device according to an embodiment of the present utility model includes a roasting tank 1; a feed inlet 11 is provided at the top of the roasting tank 1; an air delivery pipe 12 is penetrated through the side wall of the roasting tank 1; a plurality of air outlet holes 13 are provided on the air delivery pipe 12; a motor 14 is fixedly connected to the middle of the roasting tank 1; an output end of the motor 14 is fixedly connected to a rotating shaft 15; the rotating shaft 15 and the roasting tank 1 are penetrated and rotatably connected; a pair of stirring rods 16 are fixedly connected to the rotating shaft 15. During operation, the coffee beans to be roasted are put into the roasting tank 1 through the feed inlet 11, and then high-temperature gas is delivered into the air delivery pipe 12. The high-temperature gas passes through the inside of the air delivery pipe 12 and then enters the roasting tank 1 from the air outlet holes 13 provided on the surface of the air delivery pipe 12. While delivering high-temperature gas into the air delivery pipe 12, the motor 14 is started. The motor 14 drives the rotating shaft 15 fixedly connected to its output end to rotate. While the rotating shaft 15 rotates, the stirring rods 16 are also driven to rotate. The rotating stirring rods 16 stir the coffee beans. By delivering high-temperature gas into the air delivery pipe 12 and spraying it out through the air outlet holes 13, the coffee beans can be heated during roasting. When the amount of coffee beans reaches a certain level, the coffee beans submerge the air delivery pipe 12. When the air delivery pipe 12 is located inside the coffee beans, the high-temperature gas diffuses from inside the coffee beans. Heating from inside the coffee beans can enable more coffee beans to evenly absorb heat, reducing the situation where the uneven heating of coffee beans caused by the traditional heating method affects the roasting effect.

[0027] As Figures 2 to 3 shown, a plurality of elastic rods 2 are fixedly connected to the air delivery pipe 12; a card slot 21 is provided on the surface of the stirring rod 16; the elastic rods 2 and the card slot 21 are correspondingly arranged. When the stirring rod 16 rotates to a specified position, the edge of the card slot 21 provided on the stirring rod 16 comes into contact with the elastic rod 2, causing the elastic rod 2 to deform, and the coffee beans staying near the air delivery pipe 12 are bounced up. By the contact between the card slot 21 and the elastic rod 2 causing the elastic rod 2 to deform, the elastic rod 2 will transmit the vibration to the air delivery pipe 12 to bounce the coffee beans nearby, causing the positions of the coffee beans to constantly change, reducing the situation where a small amount of coffee beans stay near the air delivery pipe 12 for a long time, resulting in excessive heat absorption of the coffee beans and over-roasting.

[0028] As Figure 4 shown, an elastic screen 3 is fixedly connected to the bottom of the feed inlet 11; a plurality of mesh holes 31 are provided on the elastic screen 3; before the coffee beans enter the roasting tank 1 through the feed inlet 11, the coffee beans first pass through the surface of the elastic screen 3 and then enter the roasting tank 1 through the mesh holes 31 provided on the surface of the elastic screen 3. By the mesh holes 31 provided on the elastic screen 3, impurities in the coffee beans can be screened, reducing the situation where impurities enter the roasting tank 1 and affect the roasting work of the coffee beans.

[0029] As Figure 4As shown, a plurality of bumps 4 are fixedly connected to the bottom of the elastic screen 3; a rubber block 41 is fixedly connected to the end of the bump 4; when the stirring rod 16 rotates and contacts the rubber block 41, at this time the bump 4 moves upward, driving the elastic screen 3 to move upward simultaneously. The bump 4 moves upward by contacting the stirring rod 16, and when the bump 4 moves upward, it drives the elastic screen 3 to move upward simultaneously. When the elastic screen 3 moves, it can shake off the coffee beans on the surface of the elastic screen 3 that have not fallen into the baking tank 1. At the same time, the up and down movement of the elastic screen 3 can also shake off the coffee beans staying inside the mesh holes 31, reducing the situation that larger coffee beans stay inside the mesh holes 31 and affecting the feeding work.

[0030] As Figure 5 shown, an air extraction pipe 5 is connected to the side wall of the baking tank 1; an air extraction pump 51 is connected to the end of the air extraction pipe 5; when baking coffee beans, the coffee beans will be stirred and collided by the stirring rod 16. At this time, a small amount of particulate debris will be generated in the baking tank 1. After baking, the air extraction pump 51 can be turned on, and the particulate debris inside the baking tank 1 can be extracted through the air extraction pipe 5, reducing the situation that the particulate debris affects the normal baking work.

[0031] As Figure 5 shown, a collection bag 6 is fixedly connected to the end of the air extraction pipe 5; the collection bag 6 is a mesh structure; when the particulate debris inside the baking tank 1 is extracted by the air extraction pump 51 and transported into the collection bag 6, then the air is discharged and the particulate debris stays inside the collection bag 6. By fixedly connecting the collection bag 6 to the end of the air extraction pipe 5, the extracted particulate debris can be collected and recycled to reduce waste in the baking work.

[0032] Working principle: Put the coffee beans to be roasted into the roasting tank 1 through the feed inlet 11. Subsequently, high-temperature gas is conveyed into the gas delivery pipe 12. The high-temperature gas enters the roasting tank 1 through the air outlet holes 13 opened on the surface of the gas delivery pipe 12. While conveying the high-temperature gas, the motor 14 is started. The motor 14 drives the rotating shaft 15 fixedly connected to its output end to rotate, and at the same time, the stirring rod 16 also rotates accordingly. The rotating stirring rod 16 stirs the coffee beans. When the stirring rod 16 rotates to a specified position, the edge of the card slot 21 opened on the stirring rod 16 comes into contact with the elastic rod 2, causing the elastic rod 2 to deform and bouncing up the coffee beans staying near the gas delivery pipe 12. When the coffee beans enter the roasting tank 1 through the feed inlet 11, the impurities and oversized coffee beans in the coffee beans can be screened through the mesh holes 31 opened on the elastic screen 3, reducing the influence of impurities entering the roasting tank 1 on the roasting work of the coffee beans. When the stirring rod 16 rotates and comes into contact with the rubber block 41, at this time, the convex block 4 moves upward, driving the elastic screen 3 to move upward at the same time. When roasting the coffee beans, since the coffee beans will generate a small amount of granular debris when heated, at this time, the air extraction pump 51 is started, and the granular debris inside the roasting tank 1 is extracted through the air extraction pipe 5, reducing the situation that the granular debris affects the normal roasting work. After the granular debris inside the roasting tank 1 is extracted by the air extraction pump 51, it is conveyed into the collection bag 6, and then the air is discharged, and the granular debris stays inside the collection bag 6.

[0033] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A coffee bean roasting device, comprising a roasting tank (1); characterized in that: The baking tank (1) is provided with a feed inlet (11) at the top; a gas transmission pipe (12) penetrates through the side wall of the baking tank (1); a plurality of air outlet holes (13) are formed in the gas transmission pipe (12); a motor (14) is fixedly connected to the middle of the baking tank (1); a rotating shaft (15) is fixedly connected to the output end of the motor (14); the rotating shaft (15) and the baking tank (1) are arranged in a penetrating manner and are rotationally connected; a pair of stirring rods (16) are fixedly connected to the rotating shaft (15).

2. The coffee bean roasting device according to claim 1, wherein: A plurality of elastic rods (2) are fixedly connected to the gas transmission pipe (12); clamping grooves (21) are formed on the surface of the stirring rod (16); the elastic rods (2) and the clamping grooves (21) are arranged in correspondence with each other.

3. The coffee bean roasting device according to claim 2, wherein: An elastic screen (3) is fixedly connected to the bottom of the feed inlet (11); a plurality of mesh holes (31) are formed in the elastic screen (3).

4. A coffee bean roasting device according to claim 3, characterized in that: A plurality of convex blocks (4) are fixedly connected to the bottom of the elastic screen (3); rubber blocks (41) are fixedly connected to the ends of the convex blocks (4).

5. The coffee bean roasting device according to claim 4, characterized in that: An air extraction pipe (5) is communicated with the side wall of the baking tank (1); an air extraction pump (51) is communicated with the end of the air extraction pipe (5).

6. The coffee bean roasting device according to claim 5, wherein: A collection bag (6) is fixedly connected to the end of the air extraction pipe (5); the collection bag (6) is of a net structure.

Images