Cigarette making machine circulating air energy-saving temperature control system and method

Abstract

The present invention relates to a cigarette machine circulating air energy-saving temperature control system and method. The system includes a cigarette machine circulating air unit, an energy storage circulation unit, a cooling circulation unit, and a heating circulation unit. The cigarette machine circulating air unit includes a fluidized bed, a circulating air distribution box, a circulating air distribution box temperature sensor, a circulating fan, a heat exchanger, a cyclone dust collector, and an energy storage heat exchanger. The energy storage circulation unit includes an energy storage pump, an energy storage device, and an energy storage medium temperature sensor. The outlet pipe of the cooling circulation unit and the outlet pipe of the heating circulation unit are connected in parallel to the inlet end of the heat exchanger, and the inlet pipe of the cooling circulation unit and the inlet pipe of the heating circulation unit are connected in parallel to the outlet end of the heat exchanger. This technical solution can accurately control the circulating air temperature generated by the circulating fan to meet the production requirements of various cigarette specifications; it recycles the circulating air temperature energy, thereby achieving the purpose of energy saving.

Description

Technical Field

[0001] The present invention belongs to the technical field of cigarette making equipment control, and in particular relates to a cigarette making machine circulating air energy-saving temperature control system and method. Background Art

[0002] Currently, the world's most advanced high-speed tobacco citrus maker designs mostly utilize a fluidized bed system for tobacco supply and delivery, with the tobacco being conveyed by air. The circulating fan within the citrus citrus citrus citrus citrus machine serves as the power source for this air-driven conveying. However, during this process, the original circulating air temperature design is no longer sufficient to meet the diverse tobacco product specifications currently available. Different tobacco product specifications have varying process temperature requirements during production. During operation, the circulating air generated by the circulating fan within the citrus ... At the same time, the existing fluidized bed circulating air in the industry only has a cooling device, which requires multiple heat exchanges, resulting in energy waste. When the circulating fan is on standby, the inertia of cooling causes the circulating air temperature to be too low, generally below 30°C, which cannot meet the requirements of the production process. Summary of the Invention

[0003] The purpose of the present invention is to provide a circulating air energy-saving temperature control system and method for a cigarette making machine, which can accurately control the circulating air temperature generated by the circulating fan to meet the production requirements of various cigarette specifications, and achieve energy saving by recycling the circulating air temperature energy; the space for circulating fan modification is limited, and a set of circulating air energy-saving temperature control system can be installed in a limited space.

[0004] To achieve the above objectives, this application is implemented through the following technical solutions:

[0005] A cigarette making machine circulating air energy-saving temperature control system, comprising a cigarette making machine circulating air unit, an energy storage circulation unit, a cooling circulation unit, and a heating circulation unit;

[0006] The cigarette making machine circulating air unit comprises a fluidized bed, a circulating air distribution box, a circulating fan, a heat exchanger, a cyclone dust collector and an energy storage heat exchanger;

[0007] The upper part of the circulating air distribution box is connected to the bottom of the fluidized bed through an air duct, and the top of the fluidized bed is connected to the energy storage heat exchanger through a top air duct. The energy storage heat exchanger is installed on the upper part of the cyclone dust collector, and the cyclone dust collector is installed on the upper part of the heat exchanger. The bottom of the heat exchanger is connected to the inlet of the circulating fan, and the outlet of the circulating fan is connected to the bottom of the circulating air distribution box through an air duct;

[0008] The energy storage circulation unit includes an energy storage pump and an energy storage device, wherein the energy storage pump inlet is connected to the energy storage container outlet, the energy storage pump outlet is connected to the energy storage heat exchanger inlet, and the energy storage container inlet is connected to the energy storage heat exchanger outlet via a pipeline;

[0009] The outlet pipeline of the cooling circulation unit and the outlet pipeline of the heating circulation unit are connected in parallel to the inlet end of the heat exchanger, and the inlet pipeline of the cooling circulation unit and the inlet pipeline of the heating circulation unit are connected in parallel to the outlet end of the heat exchanger.

[0010] Preferably, the circulating air unit of the cigarette making machine further includes a circulating air distribution box temperature sensor installed on the circulating air distribution box.

[0011] Preferably, the energy storage circulation unit further includes an energy storage medium temperature sensor, which is installed on the energy storage container and is used to detect the temperature of the medium in the energy storage container.

[0012] Preferably, the cooling circulation unit includes a cooling medium outlet proportional valve, a cooling medium temperature sensor, a cooling medium pressure sensor, a refrigeration unit and a cooling medium inlet valve, the cooling medium outlet proportional valve is installed on the left side of the refrigeration unit outlet pipeline, the cooling medium temperature sensor and the cooling medium pressure sensor are both installed on the right side of the refrigeration unit outlet pipeline, and the cooling medium inlet valve is installed on the cooling medium circuit.

[0013] Preferably, the heating circulation unit includes a heating medium outlet valve, a heating medium temperature sensor, a heating medium pressure sensor, a heating unit and a heating medium inlet valve; the heating medium outlet valve is installed on the left side of the heating unit outlet pipeline, the heating medium temperature sensor and the heating medium pressure sensor are both installed on the right side of the heating unit outlet pipeline, and the heating medium inlet valve is installed on the heating medium loop.

[0014] Preferably, it further comprises a pressure relief tank installed on the loop of the heat exchange pipeline.

[0015] Preferably, it further comprises a control module, an input / output module and a human-computer interaction system, wherein the input / output module and the human-computer interaction system are both connected to the control module by signal;

[0016] The input and output modules include an analog input module, an analog output module, a digital input module and a digital output module.

[0017] A method for energy-saving and temperature-controlling circulating air of a cigarette making machine, using any of the above-mentioned energy-saving and temperature-controlling systems for circulating air of a cigarette making machine, comprises the following steps:

[0018] S1. The cigarette making machine auxiliary drive is turned on, and the cooling and heating units begin to operate; the pressure at the cooling unit outlet is detected by a cooling medium pressure sensor, and the detection result of the cooling unit outlet pressure is sent to the control module; the pressure at the heating unit outlet is detected by a heating medium pressure sensor, and the detection result of the heating unit outlet pressure is sent to the control module; the control module determines whether the pressures detected by the cooling medium pressure sensor and the heating medium pressure sensor have reached a set threshold;

[0019] S2. If the set threshold is not reached, the control module outputs a cigarette machine shutdown signal, and the human-machine interface displays a corresponding alarm signal; if the set threshold is reached, the temperature of the cooling unit outlet is detected by the cooling medium temperature sensor, and the detection result of the cooling unit outlet temperature is sent to the control module; the temperature of the heating unit outlet is detected by the heating medium temperature sensor, and the detection result of the heating unit outlet temperature is sent to the control module, and the control module determines whether the temperatures detected by the cooling medium temperature sensor and the heating medium temperature sensor have reached the set threshold;

[0020] S3. If the set threshold is not reached, the control module outputs a cigarette machine shutdown signal, and the human-machine interface displays a corresponding alarm signal; if the set threshold is reached, the operating status of the cigarette machine is judged;

[0021] S4. If the cigarette making machine is in operation, the circulating fan operates at a frequency of 50 Hz, and at the same time, the energy storage pump operates at a frequency of 50 Hz to store energy; the control module adjusts and controls the circulating air temperature of the cigarette making machine in operation according to the temperature result detected by the circulating air distribution box temperature sensor;

[0022] S5. After the set time, the control module determines the temperature in the circulating air distribution box and compares the detected temperature with the set temperature to see if it is within ±2°C of the set temperature. If so, it returns to step S4. If not, the control module outputs a cigarette machine shutdown signal and the human-machine interface displays a corresponding alarm signal.

[0023] Preferably, the temperature control in step S4 specifically includes the following steps:

[0024] S100, the control module controls the heating medium inlet valve and the heating medium outlet valve to close;

[0025] S101. Determine whether the circulating air distribution box sensor temperature is higher than the set temperature. If so, the cooling medium inlet switch valve is opened, and the control module controls the cooling medium proportional valve according to the circulating air distribution box detection temperature to adjust the temperature of the circulating air distribution box to the set temperature; if not, the cooling medium inlet switch valve is opened and the cooling medium outlet proportional valve is closed.

[0026] Preferably, in step S101, the temperature in the circulating air distribution box is used as the reference temperature, specifically including:

[0027] Compare the temperature in the circulating air distribution box in the control module with the set temperature and calculate the temperature difference using the following formula:

[0028] T0=(T_s-T_r)+(k1-k2)x dt,

[0029] Where T_s and T_r represent the set temperature and real-time temperature at the initial moment, k1 and k2 represent the rate of change of the set temperature and real-time temperature, dt represents the time interval, and T0 represents the temperature cooling point to be reached;

[0030] The cooling medium outlet proportional valve controls the valve opening by the following formula:

[0031] u=Kp*e+Ki*∫e+Kd*de / dt

[0032] Among them, u represents the opening of the cooling medium outlet proportional valve, e is the difference between the set value and the actual value, Kp represents the proportional coefficient of the proportional valve opening from large to small, Ki represents the control corresponding integral coefficient, and Kd represents the pre-adjustment coefficient.

[0033] Preferably, step 41 is included. When the operating status of the cigarette making machine is judged in step S3, if the cigarette making machine is in standby state, the circulating fan runs at a frequency of 10 Hz, and the energy storage pump runs at a frequency of 50 Hz to release energy; the cooling medium outlet proportional valve and the cooling medium outlet valve are closed; the heating medium inlet valve and the heating medium outlet valve are opened; the control module adjusts and controls the circulating air temperature of the cigarette making machine in standby state according to the temperature result detected by the circulating air distribution box temperature sensor.

[0034] Preferably, the temperature control in step 41 specifically includes:

[0035] S200, determining whether the temperature of the energy storage medium temperature sensor is less than or equal to the temperature of the circulating air distribution box. If so, the energy storage pump stops running; if not, returning to step S41;

[0036] S201. Determine whether the temperature of the heating medium temperature sensor is less than or equal to the set temperature. If so, close the heating medium outlet valve; if not, return to step S41.

[0037] The beneficial effects of the present invention are:

[0038] The effects of the energy-saving temperature control system for circulating air of a cigarette making machine of the present invention are:

[0039] (1) It can accurately control the temperature of the circulating air generated by the circulating fan to meet the production requirements of various cigarette specifications. (2) It can recycle the energy generated by the circulating air temperature to achieve energy saving.

[0040] (3) The space for modifying the circulating fan is limited, and a set of circulating air energy-saving temperature control system can be installed in the limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the framework of the circulating air energy-saving and temperature control system for the cigarette making machine of the present invention.

[0042] Figure 2 This is a block diagram of the control module of the circulating air energy-saving temperature control system of the cigarette making machine of the present invention.

[0043] Figure 3 This is a logic diagram of the energy-saving temperature control method for circulating air in a cigarette making machine according to the present invention.

[0044] Description of reference numerals:

[0045] 1. Fluidized bed; 2. Circulating air distribution box; 3. Circulating air distribution box temperature sensor; 4. Cyclone dust collector; 5. Circulating fan; 6. Energy storage heat exchanger; 7. Heat exchanger; 8. Energy storage container; 9. Refrigeration unit; 10. Heating unit; 11. Energy storage pump; 12. Pressure relief tank; 13. Heating medium pressure sensor; 14. Energy storage medium temperature sensor; 15. Heating medium outlet valve; 16. Cooling medium outlet proportional valve; 17. Cooling medium temperature sensor; 18. Cooling medium inlet valve; 19. Cooling medium pressure sensor; 20. Heating medium temperature sensor; 21. Heating medium inlet valve. DETAILED DESCRIPTION

[0046] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, and cannot be interpreted as limiting the technical solution of the present invention.

[0047] like Figure 1 and Figure 2 As shown, the present application provides a cigarette making machine circulating air energy-saving temperature control system, including a cigarette making machine circulating air unit, an energy storage circulation unit, a cooling circulation unit, a heating circulation unit, a pressure relief tank, a control module, an input and output module, and a human-computer interaction device.

[0048] The circulating air unit of the cigarette making machine includes a fluidized bed 1, a circulating air distribution box 2, a circulating air distribution box temperature sensor 3, a circulating fan 5, a heat exchanger 7, a cyclone dust collector 4, and an energy storage heat exchanger 6. The circulating air distribution box temperature sensor 3 is installed on the left side of the circulating air distribution box 2 to detect the temperature of the circulating air in the circulating air distribution box 2. The upper part of the circulating air distribution box 2 is connected to the bottom of the fluidized bed 1 by four air ducts, and the top of the fluidized bed 1 is connected to the energy storage heat exchanger 6 by air ducts. The energy storage heat exchanger 6 includes heat exchange fins and pipes. The pipes are wrapped around the heat exchange fins, and the heat or cold transfer in the pipes is mutually conducted with the fins. It is installed on the upper part of the cyclone dust collector 4, and the bottom of the cyclone dust collector 4 is installed on the upper part of the heat exchanger 7. The heat exchanger 7 includes heat exchange fins and pipes. The pipes are wrapped around the heat exchange fins, and the heat or cold transfer in the pipes is mutually conducted with the fins. Its bottom is connected to the inlet of the circulating fan 5. The maximum speed of the circulating fan 5 is 3000r / min, which is used to provide circulating air. Its outlet is connected to the bottom of the circulating air distribution box 2 by the air duct.

[0049] The energy storage circulation unit includes an energy storage pump 11, an energy storage container 8, and an energy storage medium temperature sensor 14. The energy storage pump 11 has an output pressure of 2.5 bar. Its inlet is connected to the outlet of the energy storage container 8, and its outlet is connected to the inlet of the energy storage heat exchanger 6. The energy storage container 8 can hold 5L of heat exchange medium for storing thermal energy. Its inlet is connected to the outlet of the energy storage heat exchanger 6. The energy storage medium temperature sensor 14 is mounted on the right side of the energy storage container 8 to monitor the temperature of the medium inside the container 8.

[0050] The outlet pipeline of the refrigeration unit 9 and the outlet pipeline of the heating unit 10 are connected in parallel to the inlet end of the heat exchanger 7 , and the inlet pipeline of the refrigeration unit 9 and the inlet pipeline of the heating unit 10 are connected in parallel to the outlet end of the heat exchanger 7 .

[0051] The cooling circulation unit includes a cooling medium outlet proportional valve 16, a cooling medium temperature sensor 17, a cooling medium pressure sensor 19, a refrigeration unit 9, and a cooling medium inlet valve 18. The cooling medium outlet proportional valve 16 is used to control the flow rate of the cooling medium and is installed on the left side of the refrigeration unit 9 outlet pipe. The cooling medium temperature sensor 17 is used to detect the temperature of the cooling medium and is installed on the right side of the refrigeration unit 9 outlet pipe. The cooling medium pressure sensor 19 is used to detect the pressure within the cooling circulation pipe and is installed on the right side of the refrigeration unit 9 outlet pipe. The refrigeration unit 9, as a cold source, meets the cooling medium output requirements of 16°C ± 1°C and a constant pressure output of 2.5 bar. The cooling medium inlet valve is used to control the opening and closing of the cooling medium circuit and is installed in the cooling medium circuit.

[0052] The heating circulation unit includes a heating medium outlet valve 15, a heating medium temperature sensor 20, a heating medium pressure sensor 13, a heating unit 10, and a heating medium inlet valve 21. The heating medium outlet valve 15 is used to control the opening and closing of the heating medium outlet and is installed on the left side of the heating unit outlet pipe. The heating medium temperature sensor is used to detect the temperature of the heating medium and is installed on the right side of the heating unit outlet pipe. The heating medium pressure sensor is used to detect the pressure within the heating circulation pipe and is installed on the right side of the heating unit outlet pipe. The heating unit, as a heat source, meets the requirements of outputting a heating medium at 45°C ± 1°C and a constant pressure output of 2.5 bar. The heating medium inlet valve is used to control the opening and closing of the heating medium circuit and is installed in the heating medium circuit.

[0053] The pressure relief tank 12 is used to prevent excessive pressure in the heat exchange pipeline and is installed on the loop of the heat exchange pipeline. The control module adopts a PLC controller, which receives various signals from the input module and controls the temperature of the circulating air distribution box through calculation and output.

[0054] The input and output modules include analog input modules, analog output modules, digital input modules, and digital output modules. The analog input module collects voltage signals of 0 to 15V from various sensors, converts them into data signals, and provides them to the controller for data calculation. The analog output module converts the calculated data into a voltage signal of 0 to 15V, and controls the flow rate of the cooling medium flowing into the heat exchanger by adjusting the cooling medium outlet proportional valve. The digital input module collects the operating signal of the cigarette making machine auxiliary drive, and the digital output module controls the opening and closing of each switch valve, as well as the operation of the refrigeration / heating unit and the energy storage pump.

[0055] The system also includes a human-computer interaction system, which uses graphics to provide real-time feedback of various data and the control status of the entire system, as well as feedback of various alarm information in the control.

[0056] like Figure 3 As shown, the present application also provides a method for energy-saving temperature control of circulating air in a cigarette making machine using the above system, comprising the following steps:

[0057] Step S1: The auxiliary drive of the cigarette making machine is turned on, and the refrigeration and heating units start to operate; the pressure at the outlet of the refrigeration unit is detected by the cooling medium pressure sensor, and the detection result of the refrigeration unit outlet pressure is sent to the control module; the pressure at the outlet of the heating unit is detected by the heating medium pressure sensor, and the detection result of the heating unit outlet pressure is sent to the control module; the control module determines whether the pressures detected by the refrigeration medium pressure sensor and the heating medium pressure sensor have reached a set threshold.

[0058] Step S2: If the set threshold is not reached, the control module outputs a cigarette machine shutdown signal, and the human-machine interface displays a corresponding alarm signal; if the set threshold is reached, the temperature of the cooling unit outlet is detected by the cooling medium temperature sensor, and the detection result of the cooling unit outlet temperature is sent to the control module; the temperature of the heating unit outlet is detected by the heating medium temperature sensor, and the detection result of the heating unit outlet temperature is sent to the control module, and the control module determines whether the temperatures detected by the cooling medium temperature sensor and the heating medium temperature sensor reach the set threshold.

[0059] Step S3: If the set threshold is not reached, the control module outputs a cigarette making machine shutdown signal, and the human-machine interface displays a corresponding alarm signal; if the set threshold is reached, the operating status of the cigarette making machine is judged.

[0060] Step S4: If the cigarette making machine is in operation, the circulating fan operates at a frequency of 50 Hz. At this time, the temperature of the circulating air is higher than the process requirement due to the friction between the components and between the circulating air and the tobacco. At the same time, the energy storage pump operates at a frequency of 50 Hz to store energy. The energy storage medium in the energy storage container is temperature-detected by the energy storage medium temperature sensor, and the detection result of the medium temperature in the energy storage container is sent to the control module for data recording. The temperature of the circulating air in the circulating air distribution box is detected by the circulating air distribution box temperature sensor, and the circulating air temperature detection result is sent to the control module for data recording. The control module adjusts and controls the circulating air temperature in the operation state of the cigarette making machine according to the temperature result detected by the circulating air distribution box temperature sensor.

[0061] As described above, in the method for regulating and controlling the circulating air temperature of the cigarette making machine in operation, preferably, the temperature control in step S4 specifically includes:

[0062] In step S100 , the control module controls the heating medium inlet valve and the heating medium outlet valve to be closed.

[0063] Step S101, determine whether the circulating air distribution box sensor temperature is higher than the set temperature. If so, the cooling medium inlet switch valve is opened, and the control module controls the cooling medium proportional valve according to the circulating air distribution box detection temperature to adjust the temperature of the circulating air distribution box to the set temperature; if not, the cooling medium inlet switch valve is opened and the cooling medium outlet proportional valve is closed.

[0064] In step S101, the temperature in the circulating air distribution box is used as the reference temperature, which specifically includes:

[0065] Compare the temperature in the circulating air distribution box in the control module with the set temperature and calculate the temperature difference using the following formula:

[0066] T0=(T_s-T_r)+(k1-k2)x dt,

[0067] Where T_s and T_r represent the set temperature and real-time temperature at the initial moment, k1 and k2 represent the rate of change of the set temperature and real-time temperature, dt represents the time interval, and T0 represents the temperature cooling point to be reached;

[0068] The cooling medium outlet proportional valve controls the valve opening by the following formula:

[0069] u=Kp*e+Ki*∫e+Kd*de / dt,

[0070] Among them, u represents the opening of the cooling medium outlet proportional valve, e is the difference between the set value and the actual value, Kp represents the proportional coefficient of the proportional valve opening from large to small, Ki represents the control corresponding integral coefficient, and Kd represents the pre-adjustment coefficient.

[0071] Step S5: After the set time, the temperature in the circulating air distribution box is determined. The temperature of the circulating air in the circulating air distribution box is detected by the circulating air distribution box temperature sensor. The circulating air temperature detection result is sent to the control module, and the detected temperature is compared with the set temperature to see whether it is within ±2°C of the set temperature. If so, return to step S4. If not, the control module outputs a cigarette machine shutdown signal, and the human-machine interface displays a corresponding alarm signal.

[0072] Step S41, as in the above step S3, when the operating status of the cigarette making machine is judged, if the cigarette making machine is in standby mode, the circulating fan operates at a frequency of 10 Hz. At this time, the friction between the components and between the circulating air and the tobacco is reduced, so that the temperature of the circulating air is lower than the process requirement value; at this time, the energy storage pump operates at a frequency of 50 Hz to release energy; the cooling medium outlet proportional valve and the cooling medium outlet valve are closed; the heating medium inlet valve and the heating medium outlet valve are opened; the control module adjusts and controls the circulating air temperature of the cigarette making machine in standby mode according to the temperature result detected by the circulating air distribution box temperature sensor.

[0073] When the circulating air temperature of the cigarette making machine is in standby state, the temperature control in step S41 preferably includes:

[0074] Step S200: Determine whether the temperature of the energy storage medium temperature sensor is less than or equal to the temperature of the circulating air distribution box. If so, the energy storage pump stops running; if not, return to step S41.

[0075] Step S201: determine whether the temperature of the heating medium temperature sensor is less than or equal to the set temperature. If so, close the heating medium outlet valve; if not, return to step S41.

[0076] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cigarette making machine circulating air energy-saving temperature control system, characterized in that: It includes cigarette making machine circulating air unit, energy storage circulating unit, cooling circulating unit and heating circulating unit; The cigarette making machine circulating air unit includes a fluidized bed, a circulating air distribution box, a circulating air distribution box temperature sensor, a circulating fan, a heat exchanger, a cyclone dust collector and an energy storage heat exchanger; The circulating air distribution box temperature sensor is installed on the circulating air distribution box. The upper part of the circulating air distribution box is connected to the bottom of the fluidized bed through an air duct. The top of the fluidized bed is connected to the energy storage heat exchanger through a top air duct. The energy storage heat exchanger is installed on the upper part of the cyclone dust collector. The cyclone dust collector is installed on the upper part of the heat exchanger. The bottom of the heat exchanger is connected to the inlet of the circulating fan. The outlet of the circulating fan is connected to the bottom of the circulating air distribution box through an air duct. The energy storage circulation unit includes an energy storage pump, an energy storage device, and an energy storage medium temperature sensor. The energy storage pump inlet is connected to the energy storage container outlet, the energy storage pump outlet is connected to the energy storage heat exchanger inlet, and the energy storage container inlet is connected to the energy storage heat exchanger outlet via a pipeline. The energy storage medium temperature sensor is installed on the energy storage container. The outlet pipeline of the cooling circulation unit and the outlet pipeline of the heating circulation unit are connected in parallel to the inlet end of the heat exchanger, and the inlet pipeline of the cooling circulation unit and the inlet pipeline of the heating circulation unit are connected in parallel to the outlet end of the heat exchanger. The heating circulation unit includes a heating medium outlet valve, a heating medium temperature sensor, a heating medium pressure sensor, a heating unit, and a heating medium inlet valve; the heating medium outlet valve is installed on the left side of the heating unit outlet pipe, the heating medium temperature sensor and the heating medium pressure sensor are both installed on the right side of the heating unit outlet pipe, and the heating medium inlet valve is installed on the heating medium circuit; The cooling circulation unit includes a cooling medium outlet proportional valve, a cooling medium temperature sensor, a cooling medium pressure sensor, a refrigeration unit, and a cooling medium inlet valve. The cooling medium outlet proportional valve is installed on the left side of the refrigeration unit outlet pipe, the cooling medium temperature sensor and the cooling medium pressure sensor are both installed on the right side of the refrigeration unit outlet pipe, and the cooling medium inlet valve is installed on the cooling medium loop. If the cigarette making machine is in operation, the circulating fan runs at a frequency of 50 Hz, and at the same time, the energy storage pump runs at a frequency of 50 Hz to store energy; the control module adjusts and controls the circulating air temperature of the cigarette making machine in operation according to the temperature result detected by the circulating air distribution box temperature sensor; If the cigarette making machine is in standby mode, the circulating fan runs at a frequency of 10Hz and the energy storage pump runs at a frequency of 50Hz to release energy; the cooling medium outlet proportional valve and the cooling medium outlet valve are closed; the heating medium inlet valve and the heating medium outlet valve are opened; the control module adjusts and controls the circulating air temperature of the cigarette making machine in standby mode according to the temperature result detected by the circulating air distribution box temperature sensor.

2. The cigarette making machine circulating air energy-saving temperature control system according to claim 1, characterized in that: It also includes a pressure relief tank, which is installed on the return line of the heat exchange pipeline.

3. The energy-saving temperature control system for circulating air of a cigarette making machine according to claim 1, characterized in that: It also includes a control module, an input / output module and a human-computer interaction system, wherein the input / output module and the human-computer interaction system are both connected to the control module by signal; The input and output modules include an analog input module, an analog output module, a digital input module and a digital output module.

4. A method for energy-saving and temperature-controlling circulating air in a cigarette making machine, utilizing the energy-saving and temperature-controlling circulating air system for a cigarette making machine according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1. The auxiliary drive of the cigarette making machine is turned on, and the cooling and heating units begin to operate; the pressure at the outlet of the cooling unit is detected by a cooling medium pressure sensor, and the detection result of the cooling unit outlet pressure is sent to a control module; the pressure at the outlet of the heating unit is detected by a heating medium pressure sensor, and the detection result of the heating unit outlet pressure is sent to the control module; the control module determines whether the pressures detected by the cooling medium pressure sensor and the heating medium pressure sensor have reached a set threshold; S2. If the set threshold is not reached, the control module outputs a cigarette machine shutdown signal, and the human-machine interface displays a corresponding alarm signal; if the set threshold is reached, the temperature of the cooling unit outlet is detected by the cooling medium temperature sensor, and the detection result of the cooling unit outlet temperature is sent to the control module; the temperature of the heating unit outlet is detected by the heating medium temperature sensor, and the detection result of the heating unit outlet temperature is sent to the control module, and the control module determines whether the temperatures detected by the cooling medium temperature sensor and the heating medium temperature sensor have reached the set threshold; S3. If the set threshold is not reached, the control module outputs a cigarette machine shutdown signal, and the human-machine interface displays a corresponding alarm signal; if the set threshold is reached, the operating status of the cigarette machine is judged; S4. If the cigarette making machine is in operation, the circulating fan operates at a frequency of 50 Hz, and at the same time, the energy storage pump operates at a frequency of 50 Hz to store energy; the control module adjusts and controls the circulating air temperature of the cigarette making machine in operation according to the temperature result detected by the circulating air distribution box temperature sensor; S5. After the set time has passed, the control module determines the temperature inside the circulating air distribution box and compares the detected temperature with the set temperature to see if it is within ±2°C of the set temperature. If so, the process returns to step S4. If not, the control module outputs a cigarette machine shutdown signal, and the human-machine interface displays a corresponding alarm signal. The method includes step 41, in which when the operating state of the cigarette making machine is judged in step S3, if the cigarette making machine is in standby state, the circulating fan operates at a frequency of 10 Hz, and the energy storage pump operates at a frequency of 50 Hz to release energy; the cooling medium outlet proportional valve and the cooling medium outlet valve are closed; the heating medium inlet valve and the heating medium outlet valve are opened; and the control module adjusts and controls the circulating air temperature of the cigarette making machine in standby state according to the temperature result detected by the circulating air distribution box temperature sensor.

5. The energy-saving temperature control method for circulating air in a cigarette making machine according to claim 4, characterized in that: The temperature control of step S4 specifically includes the following steps: S100, the control module controls the heating medium inlet valve and the heating medium outlet valve to close; S101. Determine whether the circulating air distribution box sensor temperature is higher than the set temperature. If so, the cooling medium inlet switch valve is opened, and the control module controls the cooling medium proportional valve according to the circulating air distribution box detection temperature to adjust the temperature of the circulating air distribution box to the set temperature; if not, the cooling medium inlet switch valve is opened and the cooling medium outlet proportional valve is closed.

6. The energy-saving temperature control method for circulating air in a cigarette making machine according to claim 4, characterized in that: The temperature control in step 41 specifically includes: S200, determining whether the temperature of the energy storage medium temperature sensor is less than or equal to the temperature of the circulating air distribution box. If so, the energy storage pump stops running; if not, returning to step S41; S201. Determine whether the temperature of the heating medium temperature sensor is less than or equal to the set temperature. If so, close the heating medium outlet valve; if not, return to step S41.

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