Smoke exhaust structure of coffee baking machine

Abstract

The utility model provides a coffee baking machine's smoke evacuation structure, the baking machine has baking chamber and smoke evacuation mechanism, the smoke evacuation mechanism comprises a first pipe body, a second pipe body and an exhaust fan, the first pipe body is connected with the exhaust port of baking chamber, the second pipe body is coaxially arranged on the periphery of the first pipe body, and the exhaust fan is connected with the first pipe body. An air channel is formed between the second pipe body and the first pipe body, and the air outlet end of the exhaust fan is connected with the air channel. Flue gas emission is performed on the baking cavity by adopting a siphon effect, so that the problems of dust accumulation and faults caused by the fact that flue gas enters an exhaust fan can be avoided; and the air pressure is stable during smoke exhaust, and the wind power is not too large, so that the influence on the baking temperature in the baking cavity is small.

Description

Technical Field

[0001] This utility model relates to a smoke exhaust structure for a coffee roaster. Background Technology

[0002] A coffee roaster is a device used to roast coffee beans. During the roasting process, coffee beans produce a lot of smoke, so an exhaust pipe needs to be connected to remove the exhaust gas from inside the roaster. At present, the main method is to use a fan connected to the roasting chamber for direct exhaust. The smoke needs to pass through the inside of the fan before being output. This exhaust method is prone to dust accumulation and malfunctions inside the fan. Moreover, the airflow of this exhaust method is relatively strong, which affects the internal temperature control of the roasting chamber.

[0003] Therefore, it is necessary to make further improvements. Utility Model Content

[0004] To address the aforementioned issues, this invention proposes a smoke extraction structure for a coffee roaster. This structure can prevent problems such as dust accumulation and excessive airflow.

[0005] This utility model proposes a smoke exhaust structure for a coffee roaster. The roaster has a roasting chamber and a smoke exhaust mechanism. The smoke exhaust mechanism includes a first pipe, a second pipe, and an exhaust fan. The first pipe is connected to the exhaust port of the roasting chamber. The second pipe is coaxially disposed around the first pipe, and an air passage is formed between the second pipe and the first pipe. The exhaust fan's outlet is connected to the air passage.

[0006] In one or more embodiments, the smoke exhaust mechanism further includes a third pipe, one end of which is connected to the side wall of the second pipe, and the exhaust fan is mounted on the other end of the third pipe.

[0007] In one or more embodiments, the length of the second tube is greater than the length of the first tube.

[0008] In one or more embodiments, the first pipe body is welded to the edge of the exhaust port, and the second pipe body has a mounting base plate, which is fixed to the outer wall of the baking cavity by screws.

[0009] In one or more embodiments, the vent is located on the upper back of the baking cavity.

[0010] In one or more embodiments, the baking cavity is provided with a baking cage and heating tubes, the number of heating tubes is two, and a drive motor that drives the baking cage to rotate is provided outside the baking cavity.

[0011] Compared with existing technologies, this solution has the following advantages: by using a siphon effect to exhaust the smoke from the baking chamber, it can avoid the problem of smoke entering the exhaust fan and causing dust accumulation and malfunction; and the air pressure during smoke exhaust is stable and the wind force is not too strong, so it has little impact on the baking temperature inside the baking chamber. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the smoke exhaust mechanism and baking chamber of this utility model;

[0013] Figure 2 This is a cross-sectional view of the connection between the smoke exhaust mechanism and the baking chamber of this utility model. Detailed Implementation

[0014] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0015] Please refer to the appendix. Figure 1-2 This utility model provides a smoke exhaust structure for a coffee roaster. The roaster 1 has a roasting chamber 2 and a smoke exhaust mechanism. The smoke exhaust mechanism includes a first pipe 3, a second pipe 4, and an exhaust fan 5. The first pipe 3 is connected to the exhaust port of the roasting chamber 2. The second pipe 4 is coaxially arranged around the first pipe 3, forming an air passage 6 between the second pipe 4 and the first pipe 3. The exhaust fan 5 is connected to the air passage. When the air blown by the exhaust fan passes through the air passage, the air pressure in the air passage will decrease, while the air pressure in the first pipe will be higher than the air pressure in the air passage. Under the pressure difference, the air inside the roasting chamber connected to the first pipe will be discharged from the first pipe, thereby achieving the function of guiding and exhausting smoke. Compared with direct fan exhaust, it has the advantages of stable air pressure and appropriate air force, and has less impact on the temperature inside the roasting chamber.

[0016] The smoke exhaust mechanism also includes a third pipe 7, one end of which is connected to the side wall of the second pipe 4. The exhaust fan 5 is installed on the other end of the third pipe 7. Since the second pipe is connected to the baking cavity, the second pipe has a certain temperature. By setting the third pipe to install the exhaust fan, the exhaust fan can be prevented from being affected by high temperature.

[0017] The length of the second pipe 4 is greater than the length of the first pipe 3. The flue gas discharged from the first pipe is eventually guided outward from the second pipe.

[0018] The first pipe body 3 is welded to the edge of the exhaust port to ensure the sealing between the first pipe body and the exhaust port. The second pipe body 4 has a mounting base plate 41, which is fixed to the outer wall of the baking cavity by screws. Using screws to install the second pipe body has the advantages of easy installation and disassembly.

[0019] The exhaust port is located on the upper back of the roasting chamber 2. The front of the roasting chamber is generally where coffee beans are placed. Therefore, placing the exhaust port on the back can avoid interference and make full use of the space on the back of the roasting chamber.

[0020] The roasting chamber 2 is equipped with a roasting cage 8 and two heating tubes. The outside of the roasting chamber 2 is equipped with a drive motor 9 that drives the roasting cage to rotate, which is conducive to roasting coffee beans more evenly.

[0021] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. A smoke extraction structure for a coffee roaster, characterized in that: The baking machine (1) has a baking chamber (2) and a smoke exhaust mechanism. The smoke exhaust mechanism includes a first pipe (3), a second pipe (4) and an exhaust fan (5). The first pipe (3) is connected to the exhaust port of the baking chamber (2). The second pipe (4) is coaxially arranged around the first pipe (3). An air passage (6) is formed between the second pipe (4) and the first pipe (3). The exhaust fan (5) is connected to the air passage.

2. The smoke extraction structure of a coffee roaster according to claim 1, characterized in that: The smoke exhaust mechanism also includes a third pipe (7), one end of which is connected to the side wall of the second pipe (4), and the exhaust fan (5) is installed on the other end of the third pipe (7).

3. The smoke extraction structure of a coffee roaster according to claim 1, characterized in that: The length of the second tube (4) is greater than the length of the first tube (3).

4. The smoke extraction structure of a coffee roaster according to claim 1, characterized in that: The first tube (3) is welded to the edge of the exhaust port, and the second tube (4) has a mounting base plate (41), which is fixed to the outer wall of the baking cavity by screws.

5. The smoke extraction structure of a coffee roaster according to claim 1, characterized in that: The exhaust port is located on the upper back of the baking cavity (2).

6. The smoke extraction structure of a coffee roaster according to claim 1, characterized in that: The baking cavity (2) is equipped with a baking cage (8) and a heating tube. There are two heating tubes. The outside of the baking cavity (2) is equipped with a drive motor (9) that drives the baking cage to rotate.

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