Coffee roaster with temperature regulation

Abstract

This application discloses a coffee roaster with temperature regulation function, relating to the fields of roasting and temperature regulation technology. It includes a roasting chamber with temperature sensors on both sides, a combustion chamber fixed at the bottom of the roasting chamber, and an internal stirring device consisting of a stirring shaft and a stirring paddle. The cooling system includes a cooling channel within the stirring shaft, air vents on the stirring paddle, and a cooling pipe connected to a cooling medium source. It also includes a drive motor, a pressure regulating valve, a feed pipe, a discharge pipe, and a storage tank. The combustion chamber contains a U-shaped gas pipe, a gas nozzle, and a spark plug, connected to an air pipe with a throttle valve, an opening adjustment motor, and an intake airflow sensor. This application achieves the effects of precisely regulating coffee roasting temperature, improving roasting quality, and facilitating feeding, discharging, and storage.

Description

Technical Field

[0001] This application relates to the field of roasting and temperature control technology, and in particular to a coffee roaster with temperature control function. Background Technology

[0002] In the coffee bean roasting process, precise control of roasting temperature directly affects the taste and quality of the coffee beans. Currently, most coffee roasters use a rated power heating system, which cannot dynamically adjust the heating power based on parameters such as the quantity and moisture content of the green beans. This results in significant deviations between the roasting temperatures of different batches of coffee beans and the preset curve, leading to poor quality consistency. Furthermore, traditional roasters lack efficient cooling mechanisms, making it difficult to quickly adjust the temperature when it exceeds the preset value, further affecting roasting uniformity. Utility Model Content

[0003] To overcome the aforementioned technical problems, this application provides a coffee roaster with temperature regulation function.

[0004] This application provides a coffee roaster with temperature regulation function, comprising: a roasting chamber; temperature sensors, one on each side of the roasting chamber; a combustion chamber fixed to the bottom of the roasting chamber for generating heat to heat the roasting chamber; a stirring device disposed inside the roasting chamber, the stirring device including a stirring shaft and a stirring paddle mounted on the stirring shaft; a cooling system comprising: a cooling channel disposed inside the stirring shaft, the stirring shaft being a hollow structure to form the cooling channel; an air outlet formed on the stirring paddle, the air outlet communicating with the cooling channel; and a cooling pipe installed on the roasting chamber, the outlet end of the cooling pipe communicating with the inlet end of the cooling channel, the inlet end of the cooling pipe being connected to the cooling medium source for introducing the cooling medium into the cooling channel;

[0005] Preferably, the air outlet is provided in a plurality of parts, and the plurality of air outlets are all provided in the region of the agitator near the agitator shaft.

[0006] By adopting the above technical solution, temperature sensors installed on both sides of the roasting oven can monitor the temperature inside the oven in real time; the combustion chamber fixed at the bottom of the oven can generate heat to heat the oven; the stirring device stirs the coffee beans inside the oven, which is conducive to uniform heating; in the cooling system, the cooling pipe introduces the cooling medium into the cooling channel inside the stirring shaft, and discharges it through the air outlet on the stirring paddle, which can achieve rapid cooling; several air outlets are opened in the area of ​​the stirring paddle near the stirring shaft, so that the cooling medium can act more effectively on the coffee beans, further improving the cooling efficiency and roasting uniformity, thereby reducing the deviation between the roasting temperature of different batches of coffee beans and the preset curve, and improving the consistency of coffee bean roasting quality.

[0007] Preferably, it also includes a drive motor, which is fixedly mounted on the outside of the baking oven and drivenly connected to the stirring shaft to drive the stirring device to rotate.

[0008] By adopting the above technical solution, temperature sensors installed on both sides of the roasting box can monitor the temperature, the combustion chamber fixed at the bottom of the roasting box can generate heat to heat the roasting box, the stirring device can stir coffee beans inside the roasting box, and the cooling system can use the cooling medium to cool the roasting box through the cooling channel and the air vent; the drive motor is installed outside the roasting box and is connected to the stirring shaft to drive the stirring device to rotate, so that the coffee beans are stirred more thoroughly during the roasting process, which helps to improve the roasting uniformity.

[0009] Preferably, the baking oven is also equipped with a pressure regulating valve.

[0010] By adopting the above technical solutions, the temperature sensor can monitor the temperature inside the roasting oven, the combustion chamber can provide heat to the roasting oven, the stirring device can ensure that the coffee beans are heated evenly, the cooling system can cool the roasting oven through the cooling medium via the cooling channel and the air outlet, and the pressure regulating valve can regulate the air pressure inside the roasting oven to ensure a stable roasting process and improve the roasting quality.

[0011] Preferably, the combustion chamber is provided with:

[0012] Gas pipelines, wherein the gas pipelines are U-shaped and there are several of them;

[0013] Gas nozzles, several of which are installed on each gas pipeline;

[0014] Spark plugs are used to ignite natural gas.

[0015] By adopting the above technical solution, the U-shaped multiple gas pipes, combined with multiple gas nozzles on each pipe, can more evenly transfer the heat generated in the combustion chamber to the roasting oven, improving the heating uniformity of coffee beans; the spark plug can effectively ignite the gas, providing a stable heat source for coffee bean roasting, improving the accuracy of roasting temperature control, reducing the deviation between the roasting temperature of different batches of coffee beans and the preset curve, and ensuring the consistency of product quality.

[0016] Preferably, the combustion chamber is also connected to an air duct, which is located on the side near the spark plug, and a throttle valve and an opening adjustment motor for driving the throttle valve are installed on the air duct.

[0017] By adopting the above technical solution, the air duct is connected to the combustion chamber and close to the spark plug. A throttle valve and an opening adjustment motor are installed on it. This allows for dynamic adjustment of the amount of air entering the combustion chamber, thereby precisely controlling the combustion status and heat generated within the combustion chamber. This enables precise temperature control within the roasting oven, solving the problem of traditional equipment being unable to dynamically adjust heating power. It also reduces the deviation between the roasting temperature of different batches of coffee beans and the preset curve, improving the consistency of product quality. Furthermore, it can flexibly adjust the air volume to assist in temperature regulation when temperature overshoot occurs, improving roasting uniformity.

[0018] Preferably, an air intake flow sensor is also installed on the air duct.

[0019] By adopting the above technical solution, a temperature sensor monitors the temperature of the roasting oven, the combustion chamber heats the roasting oven, a stirring device ensures that the coffee beans are heated evenly, a cooling system uses a cooling medium to quickly regulate the temperature through a cooling channel and an air outlet, a gas pipeline and a gas nozzle work with a spark plug to achieve combustion heating, an air pipeline and a throttle valve can adjust the amount of combustion air, and an air intake flow sensor can accurately obtain the air intake flow, thereby more accurately adjusting the air intake volume according to the combustion situation, so that the temperature of the coffee beans during the roasting process can better fit the preset curve, improving the consistency of roasting quality and roasting uniformity of different batches of coffee beans.

[0020] Preferred options also include:

[0021] A feed pipe, connected to the roasting chamber, is used to input coffee beans to be roasted;

[0022] The discharge pipe is connected to the roasting chamber and is used to discharge roasted coffee beans;

[0023] A storage bin is connected to the end of the discharge pipe furthest from the baking oven.

[0024] By adopting the above technical solution, the feed pipe can input coffee beans to be roasted into the roasting chamber, the discharge pipe can output roasted coffee beans from the roasting chamber, and the storage box can store roasted coffee beans, making the input, output and storage of coffee beans more orderly and improving the ease of use of the coffee roaster.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. By cooperating with the throttle valve and the intake air flow sensor, the amount of air entering the combustion chamber is controlled, and the air is mixed with the fuel gas to heat the roasting oven, thereby achieving front-end control of the coffee bean roasting temperature;

[0027] 2. The hollow stirring shaft forms a cooling channel, and natural air is introduced through the cooling pipe and sprayed out through the air outlet on the stirring paddle. Under the stirring action of the stirring device, the excessively high temperature inside the baking oven can be quickly reduced, realizing the back-end cooling control.

[0028] 3. Synchronous control of the front and back ends, in conjunction with temperature sensors, stabilizes the roasting temperature inside the roasting chamber within the preset range, providing a basis for temperature curve adjustment of the roaster and improving the roasting quality and consistency of coffee beans. Attached Figure Description

[0029] Figure 1 This is a perspective view of this application;

[0030] Figure 2 It is a three-dimensional sectional view showing the internal structure of the equipment;

[0031] Figure 3 It is a three-dimensional view of the specific structure of the stirring device.

[0032] Explanation of reference numerals in the attached diagram: 10. Baking oven; 11. Cooling pipe; 12. Temperature sensor; 13. Drive motor; 14. Feed pipe; 15. Discharge pipe; 16. Pressure regulating valve; 20. Combustion chamber; 21. Gas pipeline; 22. Gas nozzle; 23. Spark plug; 24. Air pipeline; 241. Throttle valve; 242. Opening adjustment motor; 243. Intake air flow sensor; 30. Stirring device; 31. Stirring paddle; 311. Air outlet; 32. Stirring shaft; 321. Cooling channel; 40. Storage tank. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0034] This application discloses a coffee roaster with temperature regulation function. This application mainly uses an electronically controlled throttle valve 241 to control the air intake and combines it with various temperature control measures to achieve precise control of the coffee bean roasting temperature and improve roasting quality. The following is a further detailed description of this application. The coffee roaster with temperature regulation function provided in this application includes a roasting chamber 10, a combustion chamber 20, and a stirring device 30. The combustion chamber 20 is fixed to the bottom of the roasting chamber 10, and the stirring device 30 is disposed inside the roasting chamber 10. This arrangement allows the combustion chamber 20 to directly heat the roasting chamber 10, while the stirring device 30 can stir the coffee beans inside the roasting chamber 10, effectively improving the roasting effect and uniformity. This is because the combustion chamber 20, located at the bottom, allows heat to be evenly transferred upwards, and the stirring of the stirring device 30 prevents uneven heating of the coffee beans in certain areas. The stirring device 30 includes a stirring paddle 31 and a stirring shaft 32. The stirring shaft 32 is hollow, forming a cooling channel 321, so that the stirring device 30 not only provides support for stirring but also has the function of transmitting cooling gas. The stirring paddle 31 has an air outlet 311 connected to the cooling channel 321, allowing cooling gas to pass through the cooling channel 321 and exit through the air outlet 311, thus cooling the coffee beans. The roasting chamber 10 is also equipped with a cooling pipe 11 connected to the cooling channel 321. The cooling pipe 11 and the cooling channel 321 are connected via a sealing joint to ensure airtight gas transmission. Through the combination of the stirring shaft 32, the stirring paddle 31, and the cooling pipe 11, when cooling is needed, cooling gas enters the cooling channel 321 from the cooling pipe 11 and exits through the air outlet 311. Under the stirring action of the stirring paddle 31, the temperature of the coffee beans is rapidly reduced. The roasting chamber 10 is also connected to a pressure regulating valve 16, which regulates the pressure of the roasting chamber 10 to maintain a constant pressure of the incoming cooling air.

[0035] Combustion chamber 20 is fixed to the bottom of baking oven 10. Combustion chamber 20 contains gas pipes 21 and spark plugs 23. Several gas pipes 21 are U-shaped; the U-shape increases the gas distribution range, resulting in more uniform combustion. Each gas pipe 21 is equipped with several gas nozzles 22, which are standard direct injection nozzles. Spark plugs 23 ignite the gas-air mixture. An air pipe 24 is also connected to the combustion chamber 20, positioned near the spark plugs 23 to facilitate better mixing of air and gas. A throttle valve 241 and an opening adjustment motor 242 are installed on the air pipe 24. The throttle valve 241 controls the air intake, and the opening adjustment motor 242 precisely controls the opening of the throttle valve 241. An intake air flow sensor 243 is also installed on the air pipe 24, which monitors the air flow entering the combustion chamber 20 in real time and adjusts it as needed. Through the combination of gas pipeline 21, spark plug 23, air pipeline 24, throttle valve 241, opening adjustment motor 242 and intake air flow sensor 243, gas is sprayed out from gas pipeline 21 through gas nozzle 22, mixes with air entering from air pipeline 24, and is ignited by spark plug 23. The amount of air is precisely controlled by throttle valve 241 and intake air flow sensor 243, thereby controlling the size of the combustion flame.

[0036] A temperature sensor 12 is installed on each side of the roasting oven 10. The temperature sensor 12 can monitor the temperature inside the roasting oven 10 in real time and preset the optimal roasting curve. If the temperature inside the roasting oven 10 is too high, cooling gas is introduced through the cooling pipe 11 to lower the temperature. If the roasting temperature is too low, ventilation is introduced into the combustion chamber 20 through the throttle valve 241 to increase the heat. A drive motor 13 for driving the stirring device 30 is fixedly installed on the outside of the roasting oven 10. The drive motor 13 can be a DC motor or an AC motor. DC motors are easy to speed adjust, while AC motors operate stably. The drive motor 13 is connected to the stirring shaft 32 through a coupling to drive the stirring device 30 to rotate. The roasting oven 10 is also connected to a feed pipe 14 and a discharge pipe 15. The feed pipe 14 is used to add green coffee beans into the roasting oven 10, and the discharge pipe 15 is used to discharge roasted coffee beans. The end of the discharge pipe 15 away from the roasting oven 10 is connected to a storage tank 40, which is used to store roasted coffee beans.

[0037] The implementation principle of this embodiment is as follows: raw beans enter the roasting chamber 10 through the feed pipe 14. Gas is sprayed out from the gas pipe 21 in the combustion chamber 20 through the gas nozzle 22. After mixing with the air introduced by the air pipe 24, it is ignited by the spark plug 23. The intake air flow sensor 243 monitors the intake air volume in real time, and the opening adjustment motor 242 drives the throttle valve 241 to adjust the intake air volume and control the combustion firepower.

[0038] Temperature sensor 12 monitors the temperature inside the chamber. When the temperature is too high, the cooling medium enters the cooling channel 321 through the cooling pipe 11 and is sprayed out from the air outlet 311. At the same time, the drive motor 13 drives the stirring paddle 31 to rotate, accelerating the diffusion of the cooling medium. When the temperature is insufficient, the throttle valve 241 is opened to increase the firepower.

[0039] After roasting, the coffee beans enter the storage tank 40 through the discharge pipe 15. The pressure regulating valve 16 maintains stable pressure inside the tank and ensures uniform flow of the cooling medium.

[0040] Compared to traditional roasters with rated heating power, this embodiment can flexibly adjust the temperature according to actual conditions, improving the roasting quality of coffee beans, reducing the differences in quality and taste between different batches of coffee beans, and providing a reliable basis for the temperature profile control of the roaster.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A coffee roaster with temperature regulation function, characterized in that, include: Baking box (10); Temperature sensors (12) are installed on each side of the baking oven (10); The combustion chamber (20) is fixed to the bottom of the baking oven (10) and is used to generate heat to heat the baking oven (10); A stirring device is provided inside the baking oven (10), the stirring device including a stirring shaft (32) and a stirring paddle (31) mounted on the stirring shaft (32); Cooling system, including: A cooling channel (321) is provided inside the stirring shaft (32), wherein the stirring shaft (32) is a hollow structure to form the cooling channel (321); An air outlet (311) is provided on the stirring paddle (31), and the air outlet (311) is connected to the cooling channel (321); A cooling pipe (11) is installed on the baking oven (10). The outlet end of the cooling pipe (11) is connected to the inlet end of the cooling channel (321). The inlet end of the cooling pipe (11) is connected to a cooling medium source for introducing the cooling medium into the cooling channel (321).

2. The coffee roaster having a temperature adjustment function according to claim 1, characterized in that: The air outlet (311) is provided in a plurality of places, and the plurality of air outlets (311) are all located in the region of the stirring paddle (31) near the stirring shaft (32).

3. The coffee roaster having a temperature adjustment function according to claim 1, wherein, It also includes a drive motor (13), which is fixedly installed on the outside of the baking oven (10) and drivenly connected to the stirring shaft (32) to drive the stirring device to rotate.

4. The coffee roaster having a temperature adjustment function according to claim 1, wherein, The baking oven (10) is also equipped with a pressure regulating valve (16).

5. The coffee roaster having a temperature adjustment function according to claim 1, wherein, The combustion chamber (20) is provided with: Gas pipeline (21), wherein the gas pipeline (21) is U-shaped and has several sections; Gas nozzles (22), several of the gas nozzles (22) are installed on each gas pipe (21); Spark plug (23) is used to ignite gas.

6. The coffee roaster having a temperature adjustment function according to claim 5, wherein, An air duct (24) is also connected to the combustion chamber (20). The air duct (24) is located on the side close to the spark plug (23). A throttle valve (241) and an opening adjustment motor (242) for driving the throttle valve (241) are installed on the air duct (24).

7. The coffee roaster having a temperature adjustment function according to claim 6, wherein: An air intake flow sensor (243) is also installed on the air duct (24).

8. The coffee roaster having a temperature adjustment function according to claim 1, wherein, Also includes: The feed pipe (14) is connected to the roasting box (10) for feeding in coffee beans to be roasted; The discharge pipe (15) is connected to the roasting box (10) for discharging roasted coffee beans; A storage bin (40) is connected to the end of the discharge pipe (15) away from the baking box (10).

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