Intelligent distributed clean energy coffee baking system and control method

Abstract

The invention relates to the technical field of coffee baking, and provides an intelligent distributed clean energy coffee baking system and a control method.The intelligent distributed clean energy coffee baking system comprises a fuel gas storage tank, a coffee baking machine provided with a baking chamber and a burner used for conveying hot air into the baking chamber in a matched mode; a cold air device used for conveying cold air into the baking chamber is arranged on the outer side of the fuel gas storage tank, and a first fuel gas conveying pipeline is arranged between the fuel gas storage tank and the burner so as to convey fuel gas to the burner; the intelligent distributed clean energy coffee baking system further comprises an intelligent control device or a handheld mobile terminal used for selecting a baking scheme, and the intelligent control device is in communication connection with the handheld mobile terminal. The fuel gas storage tank is provided with a first power distribution device, the coffee roaster is provided with a second power distribution device, the burner is provided with a third power distribution device, and each power distribution device is in communication connection with the intelligent control device.

Description

Technical Field

[0001] The present invention relates to the technical field of coffee roasting, and particularly relates to an intelligent distributed clean energy coffee roasting system and a control method thereof. Background Art

[0002] Currently, in the field of coffee roasting in remote areas, agricultural electricity, coal, biomass, pipeline natural gas, and bottled liquefied gas are mainly used as energy sources in the market. Among them, agricultural electricity is extremely unstable, and frequent power outages result in a low qualified rate of coffee roasting. Moreover, agricultural electricity generally has a small power, making it difficult to drive high-power equipment, which restricts industrial production; coal is the most popular, but it has a high carbon emission and large air pollution; biomass is seasonal and its source is unstable; the construction cost of pipeline natural gas in remote rural areas is high and the penetration rate is low; bottled liquefied gas is mostly a mixture of propane and butane, with many impurities, making it difficult to achieve the temperature control accuracy required for high-quality coffee roasting. In addition, the industrial energy consumption requires a large storage capacity, and the accumulation of a large number of steel cylinders and frequent replacement are time-consuming and laborious, with high safety risks and low economy. The inventor believes that the existing energy supplies in the market currently cannot meet the high-quality roasting needs of rural industrialization, resulting in defects in its energy management method such as low temperature control accuracy and poor adaptability; the existing methods for changing temperature mostly use air cooling, with poor cooling ability, and there are defects such as energy waste and backward energy-saving technologies.

[0003] Currently, there is no industrial intelligent technology method in the market that meets the requirements of clean energy, can be widely applied to rural areas, and can still ensure the continuity of coffee roasting even when the power grid is unstable or there is a long-term power outage.

[0004] Therefore, further improvement is needed. Summary of the Invention

[0005] The present invention proposes an intelligent distributed clean energy coffee roasting system and a control method thereof. In order to meet the application of clean energy and explore the new quality productivity upgrade of high-quality agricultural product processing in rural areas, the energy is changed to commercial propane with a purity of more than 95%. Utilizing its stable calorific value, precise control of roasting temperature can be achieved, cooling for temperature reduction is generated by gasification of commercial propane, rapid temperature adjustment is carried out through intelligent calculation and control management to improve coffee quality, and at the same time, requirements such as safety prevention and control, energy-saving management, combustion control, data transmission, remote monitoring, and traceability are improved. Therefore, the present invention proposes an intelligent distributed clean energy coffee roasting system and a control method thereof.

[0006] An intelligent distributed clean energy coffee roasting system designed according to this purpose includes a gas storage tank, a coffee roasting machine with a roasting chamber, and a burner for cooperating to convey hot air into the roasting chamber. A cold air device for conveying cold air into the roasting chamber is provided on the outer side of the gas storage tank. The gas storage tank and the burner are provided with a first gas transmission pipeline to convey gas to the burner; The intelligent distributed clean energy coffee roasting system further includes an intelligent control device or a handheld mobile terminal for selecting a roasting plan, and the intelligent control device is communicatively connected to the handheld mobile terminal; The gas storage tank is provided with a first power distribution device, the coffee roaster is provided with a second power distribution device, and the burner is provided with a third power distribution device. Each power distribution device is communicatively connected to the intelligent control device respectively.

[0007] The intelligent distributed clean energy coffee roasting system further includes a gas power supply device and a photovoltaic power generation device for supplying power to the power distribution devices of the gas storage tank, the coffee roaster and the burner. The gas power supply device and the photovoltaic power generation device are respectively communicatively connected to the intelligent control device; the power distribution devices of the gas storage tank, the coffee roaster and the burner are also connected to the urban power supply through leads.

[0008] The intelligent distributed clean energy coffee roasting system further includes a stirring stone remover for removing impurities from coffee beans. A coffee bean conveying channel is provided between the stirring stone remover and the coffee roaster to convey the coffee beans after removing impurities to the coffee roaster; The stirring stone remover is provided with a fourth power distribution device communicatively connected to the intelligent control device. The gas power supply device and the photovoltaic power generation device supply power to the fourth power distribution device respectively, and the fourth power distribution device is connected to the urban power supply through a lead.

[0009] A second gas pipeline is provided between the gas power supply device and the gas storage tank. The second gas pipeline is connected to the first gas pipeline, and a switching valve is provided at the connecting pipeline between the second gas pipeline and the first gas pipeline. When the switching valve is opened, the gas storage tank supplies gas to the gas power supply device.

[0010] The cold air device includes a heat exchange tube wound around the outside of the gas storage tank and a first fan connected to the hot air inlet end of the heat exchange tube. The air outlet end of the heat exchange tube is connected to the air inlet of the roasting chamber of the coffee roaster.

[0011] A first temperature sensor for detecting the temperature of the cold air is provided at the air outlet end. The first fan and the first temperature sensor are respectively electrically connected to the first power distribution device through leads. A liquid level sensor for connecting to the first power distribution device through a lead is provided on the gas storage tank; a positioning module is provided on the first power distribution device, and the positioning module is electrically connected to the first power distribution device through a lead. The positioning module is a Beidou / GPS positioning module.

[0012] The burner includes a gas mixing chamber. An air inlet end communicating with the outside air is provided on the gas mixing chamber. A second temperature sensor for detecting the temperature of the gas mixing chamber is provided on the gas mixing chamber. A second fan is provided at the air inlet end. The second temperature sensor and the second fan are respectively electrically connected to the third power distribution device through leads.

[0013] A control method for an intelligent distributed clean energy coffee roasting system, comprising the following control steps: Step 1: The operator selects a roasting plan on the intelligent control device or the handheld mobile terminal according to the inspected quality of the coffee beans; Step 2: The stirring and stone-removing machine starts and stirs the coffee beans to remove impurities. The stirring and stone-removing machine conveys the impurity-removed coffee beans to the coffee roaster. The intelligent control device transmits a signal to the first power distribution device of the gas storage tank according to the selected roasting plan. The gas valve electrically connected to the first power distribution device opens, and the gas storage tank conveys gas to the burner. The burner works. The second temperature sensor in the mixing chamber of the burner real-time detects the temperature of the mixing chamber. When the temperature of the mixing chamber reaches the program threshold, it triggers the burner to convey hot air to the roasting chamber of the coffee roaster; Step 3: The roasting chamber starts to roast the coffee beans. The third temperature sensor and the pressure sensor in the roasting chamber upload the detected data to the intelligent control device in real time. When the temperature in the roasting chamber is higher than the set threshold, the hot air delivery volume of the burner to the coffee roaster is reduced; Or, when the temperature in the roasting chamber is higher than the set threshold, the cold air device outside the gas storage tank is started or the refrigeration fan set in the roasting chamber is started; When the temperature in the roasting chamber is lower than the set threshold, the hot air delivery volume of the burner to the coffee roaster is increased; Or, when the temperature in the roasting chamber is lower than the set threshold, the combustion power of the burner is increased, so that the intelligent control device adjusts the air supply temperature and air supply volume according to the set program to achieve the purpose of accurate air temperature, and the intelligent control device adjusts the temperature of the roasting chamber according to the set program.

[0014] In Steps 2 and 3, the intelligent control device uses urban electricity, gas power supply devices and photovoltaic power generation devices according to the set parameters to supply power to the power distribution devices of the gas storage tank, coffee roaster, burner and stirring and stone-removing machine, and adjusts the power supply sequence; In Steps 2 and 3, the video monitoring device monitors the working conditions of the gas storage tank, coffee roaster, burner and stirring and stone-removing machine, and uploads the generated video information to the intelligent control device; the intelligent control device controls the start and stop of the gas storage tank, coffee roaster, burner and stirring and stone-removing machine according to the situation.

[0015] In Steps 2 and 3, the liquid level sensor detects the gas storage volume in the gas storage tank and uploads it to the remote monitoring platform. The remote monitoring platform intelligently calculates the energy consumption safety of the roasting equipment. If the energy storage is lower than the energy consumption of the corresponding roasting cycle, a prompt is issued by the remote monitoring platform, and gas is transported and supplemented to the gas storage tank through relevant gas enterprises.

[0016] The beneficial technical effects of the present invention are as follows: Through the above description, the application of the present invention fills the domestic gap in using distributed clean energy to achieve uninterrupted energy consumption for high-energy-consuming coffee roasting industries and intelligent management in remote areas, including technical methods such as multi-energy coupling automatic switching, local temperature, humidity, temperature difference, water vapor degree, weight change, etc. sensing detection, intelligent temperature control regulation, energy conservation, remote monitoring, safety management, etc.

[0017] It is used to solve the problem of ensuring the industrialization of clean energy required for high-quality coffee roasting in rural areas, and to explore the upgrading of new productive forces in high-quality coffee processing technology in rural areas. The roasting energy is changed to commercial propane with a purity of over 95%. Utilize its stable calorific value to achieve precise control of roasting temperature, use the cooling effect generated by the gasification of commercial propane for cooling, rapidly adjust the temperature through intelligent calculation and control management to improve coffee quality, and simultaneously enhance energy conservation management, combustion control, data transmission, remote monitoring, traceability management, and local safety automatic control protection system solutions and control methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0019] Figure 1 It is a schematic plan view of a gas storage tank according to an embodiment of the present invention.

[0020] Figure 2 It is another schematic plan view of a gas storage tank according to an embodiment of the present invention from another orientation.

[0021] Figure 3 It is a schematic plan view of the top projection of a gas storage tank according to an embodiment of the present invention.

[0022] Figure 4 It is a schematic plan view of a coffee roasting system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In order to make the above objects, features, and advantages of the present application more obvious and understandable, many specific details are set forth in the following description for a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0024] See Figures 1-4, An intelligent distributed clean energy coffee roasting system, including a gas storage tank 1, a coffee roaster 2 with a roasting chamber, and a burner 3 for cooperating to convey hot air into the roasting chamber. A cold air device 4 for conveying cold air into the roasting chamber is provided on the outer side of the gas storage tank 1. A first gas transmission pipeline 5 is provided between the gas storage tank 1 and the burner 3 to convey gas to the burner 3; The intelligent distributed clean energy coffee roasting system further includes an intelligent control device 7 or a handheld mobile terminal 6 for selecting a roasting plan. The intelligent control device 7 is communicatively connected to the handheld mobile terminal 6; The gas storage tank 1 is provided with a first power distribution device 8, the coffee roaster 2 is provided with a second power distribution device, and the burner 3 is provided with a third power distribution device. Each power distribution device is respectively communicatively connected to the intelligent control device 7.

[0025] In this embodiment, each power distribution device includes an electric control box and corresponding electrical components arranged in the electric control box, such as relays, circuit boards, and communication connectors, etc.

[0026] In this embodiment, the handheld terminal device 6 includes a liquid crystal screen, an access communication module (4G, 5G), a Beidou / GPS positioning module, a core control module, a power supply module, a digital and analog input module, an I / O control module, a wireless module, and a wiring port; the liquid crystal screen is connected to the central control device using a 4-core aviation plug. The central control device provides 12V power supply and uses an RS232 bus to upload data through a communication protocol.

[0027] The intelligent distributed clean energy coffee roasting system further includes a gas power supply device 9 and a photovoltaic power generation device 10 for supplying power to the power distribution devices of the gas storage tank 1, the coffee roaster 2, and the burner 3. The gas power supply device 9 and the photovoltaic power generation device 10 are respectively communicatively connected to the intelligent control device 7; the power distribution devices of the gas storage tank 1, the coffee roaster 2, and the burner 3 are also connected to the urban power supply through leads.

[0028] The intelligent distributed clean energy coffee roasting system further includes a stirring and stone removing machine 11 for removing impurities from coffee beans. A coffee bean conveying channel 12 is provided between the stirring and stone removing machine 11 and the coffee roaster 2 to convey the coffee beans after removing impurities to the coffee roaster 2; The stirring and stone removing machine 11 is provided with a fourth power distribution device communicatively connected to the intelligent control device 7. The gas power supply device 9 and the photovoltaic power generation device 10 respectively supply power to the fourth power distribution device, and the fourth power distribution device is connected to the urban power supply through a lead.

[0029] A second gas transmission pipeline 13 is provided between the gas power supply device 9 and the gas storage tank 1. The second gas transmission pipeline 13 is connected to the first gas transmission pipeline 5, and a switch valve 14 is provided at the connection pipeline between the second gas transmission pipeline 13 and the first gas transmission pipeline 5. When the switch valve 14 is opened, the gas storage tank 1 supplies gas to the gas power supply device 9.

[0030] The cold air device 4 includes a heat exchange tube 15 wound around the outside of the gas storage tank 1 and a first fan 16 connected to the air inlet end of the heat exchange tube 15. The air outlet end of the heat exchange tube 15 is connected to the air inlet of the baking chamber of the coffee roaster 2.

[0031] In this embodiment, the material of the heat exchange tube 15 is copper pipe, and the copper pipe is fixed on the outer wall of the gas storage tank 1 by welding. When commercial propane is naturally gasified, the outer wall temperature of the gas storage tank 1 can be reduced to -30°C (ambient temperature 20°C). The heat exchange tube 15 can provide cold air above -10°C and does not require any energy consumption.

[0032] A first temperature sensor 17 for detecting the cold air temperature is provided at the air outlet end. The first fan 16 and the first temperature sensor 17 are respectively electrically connected to the first power distribution device 8 through leads. A liquid level sensor for connecting to the first power distribution device 8 through a lead is provided on the gas storage tank 1; a positioning module is provided on the first power distribution device 8, and the positioning module is electrically connected to the first power distribution device 8 through a lead. The positioning module is a Beidou / GPS positioning module.

[0033] The burner 3 includes a gas mixing chamber. An air inlet end communicating with the outside air is provided on the gas mixing chamber. A second temperature sensor for detecting the temperature of the gas mixing chamber is provided on the gas mixing chamber. A second fan is provided at the air inlet end. The second temperature sensor and the second fan are respectively electrically connected to the third power distribution device through leads.

[0034] A control method for an intelligent distributed clean energy coffee roasting system includes the following control steps: Step 1: The operator selects a roasting plan on the intelligent control device 7 or the handheld mobile terminal 6 according to the quality inspection of the coffee beans. Step 2: The stirring and stone removing machine 11 is started to stir and remove impurities from the coffee beans. The stirring and stone removing machine 11 conveys the coffee beans after removing impurities to the coffee roaster 2. The intelligent control device 7 transmits a signal to the first power distribution device 8 of the gas storage tank 1 according to the selected roasting plan. The gas valve electrically connected to the first power distribution device 8 is opened, and the gas storage tank 1 supplies gas to the burner 3. The burner 3 works. The second temperature sensor in the gas mixing chamber of the burner 3 continuously detects the temperature of the gas mixing chamber. When the temperature of the gas mixing chamber reaches the program threshold, the burner 3 is triggered to convey hot air to the baking chamber of the coffee roaster 2. Step 3: The roasting chamber starts roasting coffee beans. The third temperature sensor and the pressure sensor in the roasting chamber upload the detected data to the intelligent control device 7 in real time. When the temperature in the roasting chamber is higher than the set threshold, the hot air delivery volume of the burner 3 to the coffee roaster 2 is reduced; Or, when the temperature in the roasting chamber is higher than the set threshold, start the cold air device 4 on the outer side of the gas storage tank 1 or start the refrigeration fan set in the roasting chamber; When the temperature in the roasting chamber is lower than the set threshold, increase the hot air delivery volume of the burner 3 to the coffee roaster 2; Or, when the temperature in the roasting chamber is lower than the set threshold, increase the combustion power of the burner 3, so that the intelligent control device 7 adjusts the air supply temperature and air supply volume according to the set program to achieve the purpose of accurate air temperature, and the intelligent control device 7 adjusts the temperature of the roasting chamber according to the set program.

[0035] Specifically: The roasting method is that the fuel used in this method is commercial propane with a purity of more than 95% to achieve accurate calorific value management. Therefore, the coffee roaster 2 adopts the closed roasting method with the highest temperature requirement: The operator selects the roasting plan on the intelligent control device 7 or the handheld mobile terminal 6 according to the inspected quality of the coffee beans. The stirring and stone-removing machine 11 starts feeding. The intelligent control device 7 opens the gas supply valve of the gas storage tank 1 and starts the burner 3 to work according to the set program. The temperature sensor in the mixing chamber detects the temperature of the mixing chamber in real time. When the temperature reaches the program threshold, it triggers the air supply system, and the roasting chamber starts roasting (the program temperature is designed between 230 - 240 °C, and the temperature difference requirement is plus or minus 1.5 °C). The temperature sensor and the pressure sensor in the roasting chamber upload the detected data to the intelligent control device 7 in real time. When the temperature is 0.5 °C higher than the set threshold, reduce the hot air delivery. When the temperature is 1 °C higher than the set threshold, start the cold air fan. When the temperature is 0.5 °C lower than the set threshold, increase the hot air volume. When the temperature is 1 °C lower than the set threshold, increase the combustion power. The intelligent control device 7 changes the air supply temperature and air supply volume according to the set program to achieve the purpose of accurate air temperature. The intelligent control device 7 changes the temperature of the closed roasting chamber according to the set program (different programs can be set: the high-temperature roasting time is designed between 15 - 20 minutes, the medium-temperature roasting time is designed between 10 - 30 minutes, the constant-temperature moisture-removing time is designed between 5 - 30 minutes, and the anaerobic fermentation time is between 24 - 72 hours). After roasting is completed, the intelligent control device 7 shuts down the combustion device, shuts down the burner 3, shuts down the gas supply valve of the gas storage tank 1, issues a prompt, records the process and batch, and synchronously uploads them to the system and the handheld mobile terminal 6.

[0036] In Step 2 and Step 3, the intelligent control device 7 uses urban electricity, the gas power supply device 9 and the photovoltaic power generation device 10 according to the set parameters to supply power to the power distribution devices of the gas storage tank 1, the coffee roaster 2, the burner 3 and the stirring and stone removing machine 11, and adjusts the power supply sequence; In Step 2 and Step 3, the video monitoring device 18 monitors the working conditions of the gas storage tank 1, the coffee roaster 2, the burner 3 and the stirring and stone removing machine 11, and uploads the generated video information to the intelligent control device 7; the intelligent control device 7 controls the start and stop of the gas storage tank 1, the coffee roaster 2, the burner 3 and the stirring and stone removing machine 11 according to the situation.

[0037] Specifically: In Step 1, the handheld intelligent terminal 6 can select on the operation interface: stirring time, cooling bin door switch, stone removal, stone removal bin door switch, smoke removal, start, heating, cooling time, stirring switch, hot machine switch; it can either select the system's built-in parameters or manually adjust: firepower, air damper, rotation speed, hot machine temperature. Synchronously and real-time monitor the bean temperature, air temperature and the baking process curve; the relevant data is traceable.

[0038] Specifically: In Step 2, the hot air control method: Traditional fuels such as coal and biomass are difficult to achieve precise air temperature due to their many impurities, inconsistent components and uneven calorific values, resulting in a large discrete rate of the first and second explosions of coffee beans. This method uses a special device for small commercial propane storage tanks to supply commercial propane with a purity of over 95%. It is more economical than ordinary liquefied gas, and the fuel has a uniform calorific value and small power fluctuations of the burner 3; the control process is: The intelligent control device 7 opens the gas supply valve of the small commercial propane storage tank according to the parameters set by the handheld intelligent terminal 6, the burner 3 works, the hot air temperature sensor (the second temperature sensor for the temperature of the mixing chamber) monitors the air temperature in real time and uploads it to the intelligent control device 7, the intelligent control device adjusts the gas supply valve of the special device for small commercial propane storage tanks in real time, the power of the burner 3 changes due to the gas supply, the temperature sensor monitors the bean temperature in real time and uploads it to the intelligent control device 7, and the intelligent control device automatically adjusts the air volume and stirring speed in real time according to the set program, requiring an air temperature tolerance of plus or minus 1°C and a bean temperature tolerance of plus or minus 1.5°C. Therefore, the discrete rate of the first and second explosions of coffee beans is much better than the traditional method, and the quality of the produced finished products is extremely high.

[0039] Specifically: In step two, for the cold air control method: Traditional coffee roasting mostly uses natural air cooling for temperature reduction, which has low efficiency and long time, and it is difficult to produce high-quality coffee beans. In this solution, the commercial propane in the gas storage tank 1 absorbs a large amount of heat during natural gasification. High heat exchange capacity copper tubes (heat exchange tubes 15) are used to surround the outside of the gas storage tank 1. According to the product design specifications, the outer wall temperature of the gas storage tank 1 can be reduced to -30°C (ambient temperature 20°C) when the commercial propane undergoes natural gasification. The heat exchange tubes 15 can provide cold air above -10°C and do not require any energy consumption. The control process is as follows: The intelligent control device 7 starts the first blower 16 according to the parameters set by the handheld intelligent terminal 6. The first temperature sensor 17 monitors the cold air temperature in real time and uploads it to the intelligent control device 7. The temperature sensor monitors the bean temperature in real time and uploads it to the intelligent control device 7. The intelligent control device 7 automatically adjusts the cold air volume and stirring speed in real time according to the set program to achieve rapid temperature reduction. The requirement is that the cold air temperature tolerance is within plus or minus 1°C, and the bean temperature tolerance is within plus or minus 1.5°C. Therefore, the coffee bean temperature reduction efficiency is much better than the traditional method, and the quality of the produced finished product is extremely high.

[0040] Specifically: Traditional coffee roasting mostly uses single electric power control. When there is unstable power supply or power outage, the equipment cannot operate, and even gets scorched, which makes it difficult to promote in rural coffee production areas. This method adopts a coupling scheme of commercial power, photovoltaic energy storage and charging, and gas power generation, which can ensure high-energy consumption and stable roasting of coffee in areas with unstable rural power grids. The control process is as follows: The intelligent control device 7 preferentially uses commercial power supply according to the set parameters. The photovoltaic energy storage and charging is designed with reserve energy to ensure 1 hour of energy consumption. When the energy storage battery has a power level higher than 50%, it preferentially uses solar energy for charging. When the energy storage battery has a power level lower than 50%, it preferentially uses commercial power for charging. When the commercial power is cut off, the gas power generation is started, and the energy storage battery supplies power to the power distribution devices of the coffee roaster 2, the stirring and stone removing machine 11, and the gas storage tank 1. The power consumption sequence is: photovoltaic power - commercial power - gas power generation. Therefore, the independent operation of this distributed system is ensured, and the preferential use of economic energy is also realized. The energy consumption cost is much better than the traditional method.

[0041] Furthermore: The present invention also has a fully automated self-checking method, in which the intelligent control device 7 automatically conducts regular self-checks according to the set parameters, including the pressure sensors, temperature sensors, the states of each motor and transmission device. The self-check records are automatically saved. If any abnormality is found, an alarm message is sent to the handheld intelligent terminal 6 in a timely manner.

[0042] Furthermore, the present invention also has a fully automated safety management method, which records in real time information such as video surveillance information, the status of the gas electromagnetic cut-off valve, the pressure, temperature, liquid level, and combustible gas concentration value of the gas storage tank, and uploads it to the intelligent control device for intelligent identification by the intelligent control device; if abnormalities such as high temperature, high pressure, earthquake, mountain flood, and fire are detected, the local automatic control cuts off the solenoid valve and the gas supply to protect the safety of equipment and personnel in real time, achieve the intrinsic safety management of the distributed system, and at the same time send out alarm information for the effective management of the affiliated gas operation unit and protect the safety of operating personnel.

[0043] In steps two and three, the liquid level sensor detects the gas storage volume in the gas storage tank 1 and uploads it to the remote monitoring platform. The remote monitoring platform intelligently calculates the energy safety of the baking equipment. If the energy reserve is lower than the energy consumption for the corresponding baking cycle, the remote monitoring platform issues a prompt, and the relevant gas enterprise transports and supplements gas to the gas storage tank 1.

[0044] Specifically: The core requirement of this method is to utilize the physical characteristics of commercial propane to achieve small and micro distributed combined cooling, heating, and power generation, so as to precisely control the coffee baking temperature and quickly change the temperature. The gas storage tank 1 of liquefied petroleum gas (commercial propane) is used as the energy storage and supply device. The gas storage tank 1 selects a gas storage tank 1 with a storage capacity greater than three days and an automatic shut-off protection system according to the energy consumption standard for coffee baking (it can be understood as a gas storage tank 1 with an automatic shut-off valve. When the gas pipeline leaks, the automatic shut-off valve will automatically close the gas from entering the pipeline, thus ensuring the safety of gas use). The liquid level sensor installed on the gas storage tank 1 uploads the inventory of commercial propane to the remote monitoring platform in real time. The remote monitoring platform intelligently calculates the energy safety of the baking equipment. If the energy reserve is lower than the energy consumption for three baking cycles, the remote monitoring platform issues a prompt, and the gas enterprise at the county level arranges delivery in a timely manner to supplement the energy, ensuring that coffee baking production can be organized normally in remote rural areas without relying on external energy.

[0045] The remote monitoring platform is interoperable with the management platform of the regulatory department, conducts data communication through the communication protocol of the remote monitoring platform, and obtains the information of commercial propane and the small storage tank device (gas storage tank 1) in real time and feeds it back on the platform to ensure the safety management of gas use.

[0046] The remote monitoring platform can remotely collect real-time information of sensors such as the temperature, pressure, liquid level, and gas concentration leakage of the gas storage tank 1, has real-time positioning capabilities, can conduct data communication with the designated platform through the preset communication protocol, and realizes safety management functions such as sensing signal monitoring, system status alarm, and local emergency disposal functions to ensure the safety of user gas use.

[0047] The intelligent control device 7 has data caching capabilities. When it is not connected to the mobile network and unable to report information to the operation platform in real time, the information can be cached in the local memory and offline information will be actively retransmitted to the relevant platform after the network is restored.

[0048] It has functions of data processing, data storage, GPS / Beidou positioning, 4G data wireless remote transmission, and data interconnection and interoperability with the management platform and the operation platform; It has an emergency stop function. The emergency stop switch can be connected through the P2 port on the small storage tank. After being pressed, it has the function of cutting off safety control devices such as emergency cut-off. The device will issue an alarm and audible and visual reminders. After troubleshooting, it can be manually reset and released; When sensor data such as liquid level, temperature, pressure, and leakage alarm are abnormal, the small storage tank will alarm and gas supply will not be possible until the problem is solved and the alarm is eliminated.

[0049] Step 1: Execute the distributed gas supervision function of the platform. Upload data to the platform through the intelligent control device. The small storage tank device, video information, and equipment status are uploaded to the platform in real time. Record operation data through the liquid level gauge and flow meter to ensure safe operation; Step 2: Clean energy baking function. The inventory of commercial propane in the small storage tank is uploaded to the remote monitoring platform in real time through the liquid level sensor installed on the small storage tank. The remote monitoring platform intelligently calculates the energy safety for the baking equipment. If the energy reserve is lower than the energy consumption for 3 baking cycles, a prompt will be issued by the system platform, and the county-level gas enterprise will arrange delivery in time to replenish the energy, ensuring that coffee baking production can be normally organized in remote rural areas without relying on external energy.

[0050] Step 3: High-quality coffee roasting function. The operator selects a roasting plan on the intelligent control device or the handheld mobile terminal according to the inspected quality of the coffee beans. The stirring and stone-removing machine starts feeding. The intelligent control device opens the gas supply valve of the small storage tank according to the set program, starts the rotating machine of the closed oven, and starts the burner to work. The temperature sensor in the mixing chamber continuously detects the temperature of the mixing chamber. When the temperature reaches the program threshold, the air supply system is triggered, and the closed roasting chamber starts roasting (the program temperature is designed between 230-240°C, and the temperature difference requirement is ±1.5°C). The temperature sensor and pressure sensor in the closed roasting chamber continuously upload the detected data to the intelligent control device. When the temperature is 0.5°C higher than the set threshold, the hot air delivery is reduced. When the temperature is 1°C higher than the set threshold, the cold air blower is started. When the temperature is 0.5°C lower than the set threshold, the hot air volume is increased. When the temperature is 1°C lower than the set threshold, the combustion power is increased. The intelligent control device changes the air supply temperature and air volume according to the set program to achieve the purpose of precise air temperature control. The intelligent control device changes the temperature of the closed roasting chamber according to the set program (different programs can be set: the high-temperature roasting time is designed between 15-20 minutes, the medium-temperature roasting time is designed between 10-30 minutes, the constant-temperature moisture-removing time is designed between 5-30 minutes, and the anaerobic fermentation time is between 24-72 hours). After roasting, the intelligent control device shuts down the combustion device, turns off the burner, closes the gas supply valve of the small storage tank, gives a prompt, records the process and batch, and synchronously uploads them to the system and the handheld terminal. Step 4: Intelligent control method. The handheld intelligent terminal can select on the operation interface: stirring time, cooling bin door switch, stone removal, stone-removing bin door switch, smoke removal, start, heating, cooling time, stirring switch, and hot machine switch. It can either select the system's built-in parameters or manually adjust: firepower, air damper, rotation speed, and hot machine temperature. Synchronously monitor the bean temperature, air temperature, and roasting process curve in real time; the relevant data can be traced. Step 5: Hot air control method. The intelligent control device adjusts according to the parameters set by the handheld terminal. The small commercial propane storage tank opens the gas supply valve, the burner works, the temperature sensor continuously monitors the air temperature and uploads it to the intelligent control device. The intelligent control device adjusts the gas supply valve of the special device of the small commercial propane storage tank in real time. The power of the burner changes due to the gas supply. The temperature sensor continuously monitors the bean temperature and uploads it to the intelligent control device. The intelligent control device automatically adjusts the air volume and stirring speed in real time according to the set program. The air temperature tolerance is required to be ±1°C, and the bean temperature tolerance is ±1.5°C, so as to ensure that the discrete rate of the first crack and second crack time of the coffee beans is much better than the traditional method, and the quality of the produced finished products is extremely high.

[0051] Step Six, Cold Air Control Method: Use the heat exchange copper pipe wound around the small storage tank to provide a cold source. The intelligent control device sets parameters according to the handheld terminal - start the cold air supply duct fan - the temperature sensor monitors the cold air temperature in real time and uploads it to the intelligent control device - the temperature sensor monitors the bean temperature in real time and uploads it to the intelligent control device - the intelligent control device automatically adjusts the cold air volume and stirring speed in real time according to the set program to achieve rapid cooling. The requirement is that the air temperature tolerance is ±1°C and the bean temperature tolerance is ±1.5°C, so as to ensure that the cooling efficiency of coffee beans is much better than the traditional method and the quality of the produced finished products is extremely high.

[0052] Step Seven, Distributed Multi-Energy Coupling Method: Adopt a coupling scheme of mains electricity, photovoltaics-storage-charging, and gas power generation, which can ensure high-energy-consuming and stable baking of coffee in areas with unstable rural power grids; the intelligent control device preferentially uses mains electricity according to the set parameters - the photovoltaics-storage-charging is designed with reserve energy to ensure 1 hour of energy consumption - the energy storage battery preferentially uses solar energy for charging when the battery level is higher than 50% - the energy storage battery preferentially uses mains electricity for charging when the battery level is lower than 50% - start gas power generation when the mains electricity is cut off - the energy storage battery supplies power to the coffee roasting machine, stirring and stone removing machine, and small storage tank gas supply device. The power consumption sequence is: photovoltaic power - mains electricity - gas power generation. Therefore, the independent operation of the distributed system is ensured, and the preferential use of economic energy is realized, and the energy consumption cost is much better than the traditional method.

[0053] Step Eight, Fully Automated Self-Inspection Method: The intelligent control device automatically conducts regular self-inspections according to the set parameters, including the status of pressure sensors, temperature sensors, each motor, and transmission devices. The self-inspection records are automatically saved. If any abnormality is found, an alarm message is sent to the handheld terminal in a timely manner.

[0054] Step Nine, Fully Automated Safety Management Method: Video monitoring information, the status of the gas electromagnetic cut-off valve, the pressure, temperature, liquid level, and combustible gas concentration value of the gas storage tank, etc. are recorded in real time and uploaded to the intelligent control device for intelligent identification by the intelligent control device; if abnormalities such as high temperature, high pressure, earthquake, mountain flood, and fire are found, the local automatic control cuts off the solenoid valve and gas supply to protect the safety of equipment and personnel in real time, realizes the intrinsic safety management of the distributed system, and at the same time sends an alarm message for the effective management of the affiliated gas operation unit to protect the safety of operating personnel; Step Ten, Remote Operation Monitoring Platform. The small storage tank device is interconnected with the manufacturing unit management platform, and data communication is carried out through the communication protocol of the gas unit operation monitoring platform. It can obtain the information of liquefied petroleum gas (commercial propane) equipment in real time and feedback it on the platform, and can judge whether to send an unlocking instruction according to the request sent by the equipment; Step 11: The intelligent control device has data caching capability and communication encryption technology. When the mobile network is not connected and information cannot be reported to the operation platform in real time, the information can be cached in the local memory and the offline information can be actively resent to the relevant platform after the network is restored; Step 12: Emergency stop function. The emergency stop switch can be connected through the P2 port. After pressing, it has the functions of emergency cut-off and liquid discharge pump safety control device cut-off. The central control device will issue an alarm and sound and light reminder. After troubleshooting, it can be manually reset to release; The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent distributed clean energy coffee roasting system, characterized in that: It includes a gas storage tank (1), a coffee roaster (2) with a roasting chamber, and a burner (3) for cooperating to convey hot air into the roasting chamber. A cold air device (4) for conveying cold air into the roasting chamber is provided on the outer side of the gas storage tank (1). The gas storage tank (1) and the burner (3) are provided with a first gas conveying pipeline (5) to convey gas to the burner (3). It further includes an intelligent control device (7) or a handheld mobile terminal (6) for selecting a roasting scheme. The intelligent control device (7) is communicatively connected to the handheld mobile terminal (6). The gas storage tank (1) is provided with a first power distribution device (8), the coffee roaster (2) is provided with a second power distribution device, and the burner (3) is provided with a third power distribution device. Each power distribution device is respectively communicatively connected to the intelligent control device (7).

2. The intelligent distributed clean energy coffee roasting system according to claim 1, wherein: It also includes a gas power supply device (9) and a photovoltaic power generation device (10) for supplying power to the power distribution devices of the gas storage tank (1), the coffee roaster (2), and the burner (3). The gas power supply device (9) and the photovoltaic power generation device (10) are respectively communicatively connected to the intelligent control device (7). The power distribution devices of the gas storage tank (1), the coffee roaster (2), and the burner (3) are also connected to the urban power supply through leads.

3. The intelligent distributed clean energy coffee roasting system according to claim 2, wherein: It further includes a stirring stone remover (11) for removing impurities from coffee beans. A coffee bean conveying channel (12) is provided between the stirring stone remover (11) and the coffee roaster (2) to convey the coffee beans after removing impurities to the coffee roaster (2). The stirring stone remover (11) is provided with a fourth power distribution device communicatively connected to the intelligent control device (7). The gas power supply device (9) and the photovoltaic power generation device (10) respectively supply power to the fourth power distribution device. The fourth power distribution device is connected to the urban power supply through a lead.

4. The intelligent distributed clean energy coffee roasting system according to claim 2, wherein: A second gas conveying pipeline (13) is provided between the gas power supply device (9) and the gas storage tank (1). The second gas conveying pipeline (13) is connected to the first gas conveying pipeline (5), and a switch valve (14) is provided at the connection pipeline between the second gas conveying pipeline (13) and the first gas conveying pipeline (5). When the switch valve (14) is opened, the gas storage tank (1) conveys gas to the gas power supply device (9).

5. The intelligent distributed clean energy coffee roasting system according to claim 1, characterized in that: The cold air device (4) includes a heat exchange tube (15) wound around the outer side of the gas storage tank (1), and a first fan (16) connected to the air inlet end of the heat exchange tube (15). The air outlet end of the heat exchange tube (15) is connected to the air inlet of the roasting chamber of the coffee roaster (2).

6. The intelligent distributed clean energy coffee roasting system according to claim 5, wherein: A first temperature sensor (17) for detecting the temperature of the cold air is provided at the air outlet end. The first fan (16) and the first temperature sensor (17) are respectively electrically connected to the first power distribution device (8) through leads. A liquid level sensor for connecting to the first power distribution device (8) through a lead is provided on the gas storage tank (1). A positioning module is provided on the first power distribution device (8), and the positioning module is electrically connected to the first power distribution device (8) through a lead. The positioning module is a Beidou / GPS positioning module.

7. The intelligent distributed clean energy coffee roasting system according to claim 1, wherein: The burner (3) includes a gas mixing chamber. An air inlet end communicating with the outside air is provided on the gas mixing chamber. A second temperature sensor for detecting the temperature of the gas mixing chamber is provided on the gas mixing chamber. A second blower is provided on the air inlet end. The second temperature sensor and the second blower are respectively electrically connected to a third power distribution device through leads.

8. A control method for an intelligent distributed clean energy coffee roasting system, characterized in that: It includes the following control steps: Step 1: An operator selects a baking plan on the intelligent control device (7) or the handheld mobile terminal (6) according to the inspected quality of the coffee beans. Step 2: The stirring and stone removing machine (11) starts and stirs and removes impurities from the coffee beans. The stirring and stone removing machine (11) conveys the coffee beans after impurity removal to the coffee roaster (2). The intelligent control device (7) sends a signal to the first power distribution device (8) of the gas storage tank (1) according to the selected baking plan. The gas valve electrically connected to the first power distribution device (8) opens. The gas storage tank (1) conveys gas to the burner (3). The burner (3) operates. The second temperature sensor in the gas mixing chamber of the burner (3) detects the temperature of the gas mixing chamber in real time. When the temperature of the gas mixing chamber reaches the program threshold, it triggers the burner (3) to convey hot air to the baking chamber of the coffee roaster (2). Step 3: The baking chamber starts to bake the coffee beans. The third temperature sensor and the pressure sensor in the baking chamber upload the detected data to the intelligent control device (7) in real time. When the temperature in the baking chamber is higher than the set threshold, the hot air delivery volume of the burner (3) to the coffee roaster (2) is reduced. Or, when the temperature in the baking chamber is higher than the set threshold, the cold air device (4) on the outside of the gas storage tank (1) is started or the refrigeration blower provided in the baking chamber is started. When the temperature in the baking chamber is lower than the set threshold, the hot air delivery volume of the burner (3) to the coffee roaster (2) is increased. Or, when the temperature in the baking chamber is lower than the set threshold, the combustion power of the burner (3) is increased, so that the intelligent control device (7) adjusts the air supply temperature and air supply volume according to the set program to achieve the purpose of accurate air temperature, and the intelligent control device (7) adjusts the temperature of the baking chamber according to the set program.

9. The control method of the intelligent distributed clean energy coffee roasting system according to claim 8, characterized in that: In Step 2 and Step 3, the intelligent control device (7) uses urban electricity, the gas power supply device (9) and the photovoltaic power generation device (10) according to the set parameters to supply power to the power distribution devices of the gas storage tank (1), the coffee roaster (2), the burner (3) and the stirring and stone removing machine (11), and adjusts the power supply sequence. In Step 2 and Step 3, the video monitoring device (18) monitors the working conditions of the gas storage tank (1), the coffee roaster (2), the burner (3) and the stirring and stone removing machine (11), and uploads the generated video information to the intelligent control device (7); the intelligent control device (7) controls the start and stop of the gas storage tank (1), the coffee roaster (2), the burner (3) and the stirring and stone removing machine (11) according to the situation.

10. The control method of the intelligent distributed clean energy coffee roasting system according to claim 8, characterized in that: In steps two and three, the liquid level sensor detects the gas storage volume in the gas storage tank (1) and uploads it to the remote monitoring platform. The remote monitoring platform intelligently calculates the energy safety of the baking equipment. If the energy storage is lower than the energy consumption of the corresponding baking cycle, a prompt is sent by the remote monitoring platform, and gas is transported and supplemented to the gas storage tank (1) through relevant gas enterprises.

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