Energy-saving industrial plant air conditioning system

Abstract

This invention discloses an energy-saving industrial workshop air conditioning system applied in the field of air conditioning systems. The system comprises a system terminal containing a monitoring module, a data storage module, and a control module, combined with air conditioning components containing dehumidifiers, filters, regeneration heaters, and an auxiliary heating unit. The auxiliary heating unit achieves heat recovery through an air duct ring, internal heat exchange tubes, and external heat exchange exhaust. Combined with dust and moisture sensors, it intelligently regulates airflow, achieving energy saving and consumption reduction, intelligent monitoring and early warning, improved heat exchange efficiency and ease of operation and maintenance, and ensuring a constant humidity environment in the industrial workshop. Through a dust classification and treatment mechanism, it effectively avoids the clogging and damage of the dehumidifier and filter components by high-dust airflow, extending the service life of the core equipment. With the help of the dust discharge pipe and the auxiliary heating unit, it fully recovers and utilizes the waste heat generated during the dehumidification and regeneration process to help maintain the temperature of the high-dust-content airflow during discharge.

Description

Technical Field

[0001] This invention relates to the field of air conditioning systems, and in particular to an energy-saving industrial workshop air conditioning system. Background Technology

[0002] Existing industrial workshop air conditioning systems are key equipment for ensuring a stable production environment and improving operational efficiency. They need to be designed to address complex operating conditions such as high temperature, high humidity, dust, harmful gases, and process temperature and humidity requirements. These systems typically integrate cooling, heating, ventilation, and air purification functions. Core equipment includes multi-split air conditioning units, cabinet air conditioners, and rooftop air conditioning units. Some high-temperature workshops are equipped with evaporative air coolers or local exhaust ventilation systems. For cleanrooms in electronics and precision manufacturing, the system needs to control dust particle concentration through high-efficiency particulate filters (HEPA filters); machining workshops focus on dust collection and exhaust dust removal; and chemical workshops require activated carbon adsorption or chemical scrubbing devices to treat harmful gases.

[0003] Chinese invention CN120027471B discloses a heat pipe air conditioning system for mines, including: a heat source collection component, including: a heat dissipation cover for high-temperature electromechanical equipment, and a nanofluid heat pipe connected to a pulsating heat pipe group; this invention realizes the synergy of waste heat recovery and air conditioning, ensuring mine safety and reducing energy consumption.

[0004] Chinese invention CN111795452B discloses an air conditioning system and a control method therefor. This invention further cools the two-phase refrigerant flow exiting the ejector outlet by setting a first subcooling circuit downstream of the ejector in the main circuit. This causes a portion of the gaseous refrigerant to condense into a liquid refrigerant, increasing the proportion of liquid refrigerant subsequently entering the evaporator for heat exchange, thereby effectively improving system performance and energy efficiency.

[0005] In existing industrial workshop air conditioning systems, when humid airflow containing high levels of dust is discharged, if the airflow temperature inside the dust discharge duct is lower than a preset value, water vapor easily condenses on the inner wall of the duct, forming liquid water. This condensation not only accelerates the corrosion process of the duct and significantly shortens the service life of the equipment, but also combines with dust particles, causing dust agglomeration and gradual accumulation, ultimately leading to duct blockage and affecting the normal operation and exhaust efficiency of the system. Meanwhile, in the dehumidification stage of the air conditioning system, the dehumidification equipment generates a large amount of high-temperature, high-humidity waste airflow during regeneration, and the waste heat resources contained within this airflow are currently not being fully and effectively recovered and reused. Summary of the Invention

[0006] The core of this invention lies in solving the problems of easy pipe corrosion and blockage caused by excessively low exhaust airflow temperature and the inconvenience of high-temperature exhaust airflow waste heat recovery in existing air conditioning technologies by integrating dust classification treatment, waste heat recovery and heat exchange, and dynamic control. At the same time, it easily solves the problem of high energy consumption in the system to maintain the airflow temperature.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] An energy-saving industrial workshop air conditioning system includes a system end and multiple equipment ends installed in various working areas of the industrial workshop. The system end includes a monitoring module, a data storage module, and a control module. The equipment ends include air conditioning components. The working areas include a constant temperature storage workshop and a processing workshop. The air conditioning components are connected to a dust discharge pipe for high dust content airflow and a dehumidification pipe for regeneration airflow. Dust treatment equipment connected to the dust discharge pipe is installed outside the industrial workshop. The air conditioning components include a dehumidification unit, a filtration unit, and a regeneration heater. The control module is used to control the heat recovery of the regeneration airflow and the high dust content airflow. The filtration unit is used to filter the low dust content airflow. Multiple heating units are connected to the dust discharge pipe. An auxiliary heating unit is installed in each working area, and the auxiliary heating unit is located between two heating units to assist in heating the airflow in the dust discharge pipe.

[0009] The auxiliary heating unit includes a pair of air induced rings fixedly installed on the outer wall of the powder discharge pipe. The air induced ring includes an inner ring that communicates with the air inlet pipe on the regeneration heater. The outer end of the inner ring is connected to an outer ring that communicates with the dehumidification pipe. Multiple evenly distributed inner heat exchange tubes are connected between the pair of inner rings. Multiple evenly distributed outer heat exchange rows are arranged between the outer rings. The outer heat exchange rows are located between two adjacent inner heat exchange tubes. The outer heat exchange rows include an outer conduit. An extension row for heat exchange with the powder discharge pipe is fixedly connected to the outer conduit. A multi-directional air pipe that communicates with the inner and outer rings through a three-way valve is connected to the air induced ring. A gas delivery pipe is connected to the side end of the outer ring.

[0010] Furthermore, a three-way valve is installed at the input end of the filter unit, and a dust sensor is installed at the input end of the three-way valve. The two output ends of the three-way valve are connected to the filter unit and the dust discharge pipe, respectively.

[0011] Furthermore, the multi-directional air pipe is connected to the inner and outer rings via a three-way valve. The outer heat exchanger is detachably installed between the two outer rings. A moisture sensor is installed inside the outer heat exchanger. When the moisture content inside the outer heat exchanger exceeds the set value in the non-air intake state, an early warning is issued. Then, the multi-directional air pipe introduces external dry airflow to dry the outer heat exchanger.

[0012] Furthermore, the extension row has an airflow channel communicating with the two outer rings. Multiple uniformly distributed heat exchange fins are fixedly connected inside the extension row. One end of the heat exchange fin is arranged in a ring shape inside the airflow channel, and the other end of the heat exchange fin passes through the extension row and is inserted into the powder discharge pipe. Multiple heat-conducting fins corresponding to multiple outer heat exchange rows are fixedly connected to the inner wall of the powder discharge pipe. Each heat-conducting fin is connected to multiple heat exchange fins in an outer heat exchange row.

[0013] Furthermore, the specific working process of the control module is as follows: when the airflow with high dust content is discharged, the temperature is first judged. If the temperature is higher than the set value, the airflow introduced from the outside exchanges heat with the dust discharge pipe and is then sent to the regeneration heater. The hot airflow output by the regeneration heater is used for the regeneration of the dehumidification unit. After the dehumidification unit is regenerated, it outputs a high temperature and high humidity airflow.

[0014] If the temperature is lower than the set value, the high-temperature and high-humidity airflow used for dehumidification unit exhaust will exchange heat with the powder discharge tube to maintain the stable temperature of the powder discharge tube.

[0015] Furthermore, during the heat exchange process between the high-temperature and high-humidity airflow and the dust discharge pipe, the flow rate of the high-temperature and high-humidity airflow is adjusted according to the temperature of the airflow with high dust content. When adjusting the flow rate, the ambient temperature, the current airflow temperature, and the heat loss rate of the discharge are used to prevent the temperature of the high-temperature and high-humidity airflow from becoming too low after heat exchange, thus preventing the humid airflow from being discharged to the outside.

[0016] Furthermore, the heating unit adjusts its operating power based on the airflow temperature output from the adjacent preceding auxiliary heating unit to reduce the power consumption of the heating unit.

[0017] Compared with the prior art, the advantages of this invention are:

[0018] (1) This solution effectively avoids the blockage and damage of dehumidification and filtration components by high dust airflow through the dust classification treatment mechanism, and extends the service life of the core equipment; with the help of the dust discharge pipe and auxiliary heating unit, the waste heat generated during the dehumidification regeneration process is fully recovered and utilized to help maintain the temperature when the high dust content airflow is discharged, thus realizing the regulation and high-efficiency energy saving of the air conditioning process in the high dust environment of the industrial workshop.

[0019] (2) This solution can detect pipe contamination caused by heat exchange during the dehumidification process by monitoring humidity and adjusting dynamic drying airflow. On the other hand, the detachable external heat exchanger structure combined with the graded early warning mechanism greatly reduces the frequency of manual inspection and maintenance difficulty, so that the system can always maintain a high efficiency and reliability during long-term operation. Attached Figure Description

[0020] Figure 1 This is a system block diagram of the present invention;

[0021] Figure 2This is a perspective view of the auxiliary heating unit of the present invention;

[0022] Figure 3 This is a cross-sectional schematic diagram of the auxiliary heating unit of the present invention;

[0023] Figure 4 for Figure 3 Schematic diagram of the structure at point A;

[0024] Figure 5 This is a cross-sectional view of the auxiliary heating unit of the present invention;

[0025] Figure 6 This is a logic flowchart of the present invention during operation;

[0026] Figure 7 This is a logic flowchart of the heating unit of the present invention during operation;

[0027] Figure 8 This is a logic flowchart illustrating the operation of the second embodiment of the present invention.

[0028] Explanation of the labels in the diagram:

[0029] 1. Powder discharge pipe; 2. Air intake ring; 21. Inner ring; 22. Outer ring; 23. Air pipe; 3. External heat exchanger; 31. External guide pipe; 32. Extension pipe; 33. Heat exchanger fins; 4. Internal heat exchanger. Detailed Implementation

[0030] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0031] First implementation method:

[0032] Please see Figures 1-7 An energy-saving industrial workshop air conditioning system includes a system terminal and multiple device terminals installed in various work areas of the industrial workshop. The system terminal includes a monitoring module, a data storage module, and a control module.

[0033] The monitoring module is used to collect environmental parameters and air conditioning component operating parameters in real time for each working area of ​​the industrial workshop. Environmental parameters include temperature, relative humidity, and dust concentration data. Air conditioning component operating parameters include airflow temperature and velocity at each heating unit and auxiliary heating unit on dust discharge pipe 1, outlet temperature of the regeneration heater, inlet and outlet humidity difference of the dehumidification unit, moisture content of the external heat exchange exhaust in the auxiliary heating unit, medium temperature of the internal heat exchange tube, and operating power of the heating unit. The data collected by the monitoring module is transmitted to the data storage module in real time.

[0034] The data storage module is used to store various key data generated during system operation, including but not limited to dust content data collected in real time by dust sensors in each working area, switching status data of three-way valves, dehumidification capacity and operating power data of dehumidification units, inlet and outlet airflow temperature and energy consumption data of regeneration heaters, operating power of each heating unit on dust discharge pipe 1 and airflow temperature data at adjacent auxiliary heating units, real-time temperature and humidity data of constant temperature storage area and processing area in the workshop, and airflow velocity and heat recovery efficiency data of dehumidification pipe and dust discharge pipe 1; at the same time, it stores various preset threshold parameters of the system, such as dust content judgment threshold, airflow temperature target value, heat loss rate benchmark value, and heat exchange efficiency reference value of auxiliary heating units.

[0035] The equipment includes air conditioning components, and the system is connected to each air conditioning component via a communication device. Those skilled in the art can select a suitable communication device from the prior art for installation.

[0036] The work area includes a constant-temperature storage workshop and a processing workshop. The air conditioning unit is connected to a dust discharge pipe 1 for high-dust-content airflow discharge and a dehumidification pipe for regeneration airflow discharge. Dust treatment equipment connected to the dust discharge pipe 1 is installed outside the industrial workshop. Exhaust fans for airflow discharge from the dust discharge pipe 1 and diversion fans for introducing airflow into various work areas are also installed outside the industrial workshop. The dust treatment equipment, exhaust fans, and diversion fans all adopt existing technologies and will be installed by those skilled in the art using suitable commercial settings. This solution will not be described in detail here.

[0037] The air conditioning assembly includes a dehumidification unit, a filter unit, and a regeneration heater. The dehumidification unit uses a rotary dehumidifier, a product of existing technology. The regeneration heater also uses existing technology, with an external dry airflow supplied to it via a duct fan. The regeneration heater provides regeneration air (a dry airflow heated to a high temperature of 100°C to 140°C) to the rotary dehumidifier. Appropriate regeneration heaters and rotary dehumidifiers from existing technologies are selected and installed by those skilled in the art. The control module regulates the heat recovery of the regeneration airflow and the high-dust-content airflow, while the filter unit filters the low-dust-content airflow.

[0038] The working area is equipped with a ventilation device that matches the dehumidification unit (the ventilation device adopts existing technology, and a suitable existing ventilation device shall be selected and installed by a person skilled in the art). A three-way valve is installed at the input end of the filter unit, and a dust sensor is installed at the input end of the three-way valve. The two output ends of the three-way valve are connected to the filter unit and the dust discharge pipe, respectively. The airflow to the dehumidification unit first passes through the dust sensor to monitor the dust content. If the dust content exceeds the set value, the airflow is directly discharged through the dust discharge pipe 1, and at the same time, dry airflow is introduced from the external environment for ventilation.

[0039] If the dust content is lower than the set value, the airflow is directed to the filter unit for filtration, then dehumidified by the dehumidification unit, and finally the dehumidified airflow is returned to the workshop, thus realizing the self-circulation of the airflow dehumidification process in the workshop.

[0040] Multiple heating units are connected to the powder discharge pipe 1. Each working area is equipped with an auxiliary heating unit, which is located between two heating units and is used to assist in heating the airflow in the powder discharge pipe 1.

[0041] The auxiliary heating unit includes a pair of air induced rings 2 fixedly installed on the outer wall of the powder discharge pipe 1. The air induced ring 2 includes an inner ring 21 that communicates with the air inlet pipe of the regeneration heater. The outer end of the inner ring 21 is connected to an outer ring 22 that communicates with the dehumidification pipe. A plurality of evenly distributed inner heat exchange tubes 4 are connected between the pair of inner rings 21. A plurality of evenly distributed outer heat exchange rows 3 are arranged between the outer rings 22. The outer heat exchange rows 3 are located between two adjacent inner heat exchange tubes 4. The outer heat exchange rows 3 include an outer conduit 31. An extension row 32 for heat exchange with the powder discharge pipe 1 is fixedly connected to the outer conduit 31. A multi-directional air pipe 5 that communicates with the inner ring 21 and the outer ring 22 through a three-way valve is connected to the air induced ring 2. A gas delivery pipe 23 is connected to the side end of the outer ring 22.

[0042] An airflow channel communicating with two outer rings 22 is opened inside the extension row 32. Multiple uniformly distributed heat exchange fins 33 are fixedly connected inside the extension row 32. One end of the heat exchange fin 33 is arranged in a ring shape in the airflow channel, and the other end of the heat exchange fin 33 passes through the extension row 32 and is inserted into the powder discharge pipe 1. Multiple heat-conducting fins corresponding to multiple outer heat exchange rows 3 are fixedly connected on the inner wall of the powder discharge pipe 1. Each heat-conducting fin is connected to multiple heat exchange fins 33 in one outer heat exchange row 3.

[0043] The specific working process of the control module is as follows: when the high dust content airflow is discharged, the temperature is judged first. If the temperature of the high dust content airflow is higher than the set value, the externally introduced airflow exchanges heat with the dust discharge pipe and is then sent to the regeneration heater. The hot airflow output by the regeneration heater is used for the regeneration of the dehumidification unit. After the dehumidification unit is regenerated by the hot airflow, it outputs a high temperature and high humidity airflow.

[0044] If the temperature of the high-dust-content airflow is lower than the set value, the high-temperature, high-humidity airflow used for dehumidification unit exhaust will exchange heat with the dust discharge pipe to maintain the temperature of the dust discharge pipe.

[0045] During the heat exchange process, the flow rate of the high-temperature and high-humidity airflow is adjusted according to the temperature of the airflow with high dust content. When adjusting the flow rate, the ambient temperature, the current airflow temperature, and the heat loss rate of the exhaust are used to prevent the temperature of the high-temperature and high-humidity airflow from becoming too low after heat exchange and the humid airflow after heat exchange from being discharged to the outside.

[0046] For example, when the ambient temperature is 25℃, the current temperature of the high-dust-content airflow is 58℃, and the current heat loss rate of the workshop exhaust airflow is 12%, the control module will set the flow rate of the high-temperature and high-humidity airflow to 1.5m / s. At this time, the temperature of the humid airflow after heat exchange can be stably maintained above 45℃. By adjusting the contact time between the high-temperature and high-humidity airflow and the dust discharge pipe, it is ensured that the temperature of the humid airflow after heat exchange is not lower than 35℃, which effectively avoids the humid airflow from condensing into water droplets on the inner wall of the discharge pipe due to excessively low temperature, and prevents pipe corrosion or dust agglomeration and blockage.

[0047] The heating unit adjusts its operating power according to the airflow temperature output from the adjacent auxiliary heating unit. For example, when the airflow temperature output from the adjacent auxiliary heating unit is 32°C, and the target airflow temperature set by the system is 38°C, the controller of the heating unit will reduce the original operating power of the heating unit so that the airflow temperature can be stably reached at the heating unit at 38°C, thereby reducing the redundant consumption of the heating unit.

[0048] At the same time, the heating unit will also perform secondary power calibration based on real-time dust concentration data in the workshop. For example, when the dust concentration is higher than 15mg / m³, the power output will be increased by 5% to ensure that the airflow will not rise slowly due to heat adsorption by dust during the heating process, thus ensuring a balance between the heat exchange efficiency and energy saving effect of the entire air conditioning system.

[0049] The heating unit and the auxiliary heating unit work together to help maintain the airflow temperature in the powder discharge pipe 1. The auxiliary heating unit recovers and utilizes the heat of the high-temperature and high-humidity airflow to reduce the power consumption of the heating unit and achieve energy saving.

[0050] The overall working process of this solution is as follows: When dehumidifying the constant temperature storage workshop and processing workshop in each work area of ​​the workshop, the airflow is first monitored in real time by the dust sensor at the input end of the air conditioning component; if the dust content is detected to exceed the set value, the three-way valve switches to the dust discharge pipe 1 channel, and the airflow with high dust content is directly discharged through the dust discharge pipe 1. At the same time, the system introduces dry airflow from the external environment to complete the ventilation of the workshop in this work area; if the dust content is lower than the set value, the airflow enters the filter unit through the three-way valve and is then transported to the dehumidification unit for dehumidification treatment. The dehumidified airflow is then reintroduced into the workshop to achieve self-circulation of airflow dehumidification.

[0051] When high-dust airflow is discharged from exhaust pipe 1, the control module first determines the airflow temperature:

[0052] If the temperature is higher than the set value, the externally introduced airflow is sent to the inner ring 21, where it exchanges heat with the powder discharge pipe 1 through the inner heat exchange pipe 4 and is then sent to the regeneration heater. The regeneration heater heats the airflow that has recovered the heat from the airflow in the powder discharge pipe 1, which effectively reduces energy consumption compared to directly heating the externally introduced air (cold air). The high-temperature and high-humidity airflow generated after the dehumidification unit is regenerated can be sent to the outer ring 22 of the auxiliary heating unit through the exhaust pipe or directly discharged.

[0053] If the temperature of the high dust airflow is lower than the set value, the airflow needs to be auxiliary heated in order to avoid the condensation of water vapor in the airflow during the airflow transportation process. The high temperature and high humidity airflow discharged from the dehumidification unit enters the outer ring 22 of the auxiliary heating unit through the exhaust pipe, and exchanges heat with the dust discharge pipe 1 through the external heat exchange tube 3 to assist in heating the airflow in the dust discharge pipe 1.

[0054] During the heat exchange process, the control module adjusts the flow rate of the high-temperature and high-humidity airflow regenerated and discharged by the dehumidification unit according to the ambient temperature, the current airflow temperature and the emission heat loss rate, so as to avoid the high-temperature and high-humidity airflow becoming too cold after heat exchange and the high-temperature and high-humidity airflow being finally discharged to the outside.

[0055] The auxiliary heating unit maintains the temperature of the airflow in the powder discharge pipe 1 or recovers heat through the inner heat exchange tube 4 and the outer heat exchange outlet 3 between the inner ring 21 and the outer ring 22.

[0056] The heating unit can also adjust its own working power according to the temperature of the high dust content airflow output from the adjacent auxiliary heating unit to help maintain the temperature stability of the airflow in the dust discharge pipe 1. By recovering the waste heat of the high temperature and high humidity airflow through the auxiliary heating unit to maintain the temperature of the airflow in the dust discharge pipe 1, the power consumption of the heating unit can be effectively reduced. The entire process of this system achieves energy-saving and efficient operation of the air conditioning in the industrial workshop through the coordinated control of various modules at the system end.

[0057] This solution effectively avoids the blockage and damage of dehumidification and filtration components by high dust airflow through a dust classification and treatment mechanism, thus extending the service life of the core equipment. With the help of dust discharge pipe 1 and auxiliary heating unit, the waste heat generated during the dehumidification regeneration process is fully recovered and utilized to help maintain the temperature when the high dust content airflow is discharged, thereby achieving the control and high-efficiency energy saving of the air conditioning process in the high dust environment of the industrial workshop.

[0058] Second implementation method:

[0059] Please see Figure 8 The multi-directional air pipe 5 is connected to the inner ring 21 and the outer ring 22 through a three-way valve. The outer heat exchanger 3 is detachably installed between the two outer rings 22. A moisture sensor is installed in the outer heat exchanger 3. When the moisture content in the outer heat exchanger 3 exceeds the set value in the non-air intake state, an alarm is triggered. At this time, the multi-directional air pipe 5 introduces external dry airflow to dry the outer heat exchanger 3.

[0060] A moisture sensor inside the external heat exchanger 3 monitors the moisture content in real time. If the moisture content exceeds the set value when not in an air intake state, an alarm is triggered. The system introduces external drying airflow through the multi-directional air pipe 5 to dry the external heat exchanger 3. During the drying process, the multi-directional air pipe 5 dynamically adjusts the drying airflow according to the humidity changes inside the external heat exchanger 3, ensuring that the drying airflow supply stops after the humidity inside the external heat exchanger 3 drops to a safe range. If the moisture content is detected to be continuously exceeding the standard, an alarm is triggered to remind relevant technicians to replace the external heat exchanger 3.

[0061] This implementation avoids the impact of excessive humidity on heat exchange efficiency and pipe contamination through real-time monitoring and automatic drying. Furthermore, the automatic drying adjustment and alarm reminders for replacement through a graded early warning mechanism ensure the reliability of system operation. By monitoring humidity and dynamically adjusting the drying airflow, pipe contamination caused by heat exchange during the dehumidification process can be detected in a timely manner. On the other hand, the detachable external heat exchanger 3, combined with the graded early warning mechanism, realizes intelligent management of the external heat exchanger 3. This significantly reduces the frequency and difficulty of manual inspections, allowing the system to maintain a highly efficient and reliable state during long-term operation.

[0062] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. An energy-saving industrial workshop air conditioning system, comprising a system end and multiple equipment ends installed in various working areas of the industrial workshop, wherein the system end includes a monitoring module, a data storage module, and a control module, and the equipment ends include air conditioning components, wherein the air conditioning components are connected to a dust discharge pipe (1) for high dust content airflow discharge and a dehumidification pipe for regeneration airflow discharge, and a dust treatment device connected to the dust discharge pipe (1) is installed outside the industrial workshop, characterized in that: The air conditioning assembly includes a dehumidification unit, a filter unit, and a regeneration heater; the control module is used to control the heat recovery of the regeneration airflow and the airflow with high dust content, and the filter unit is used to filter the airflow with low dust content; multiple heating units are connected to the dust discharge pipe (1), and an auxiliary heating unit is provided at each of the working areas, and the auxiliary heating unit is located between two heating units and is used to assist in heating the airflow in the dust discharge pipe (1); The auxiliary heating unit includes a pair of air-guiding rings (2) fixedly installed on the outer wall of the powder discharge pipe (1). The air-guiding ring (2) includes an inner ring (21) communicating with the air inlet pipe of the regeneration heater. The outer end of the inner ring (21) is connected to an outer ring (22) communicating with the dehumidification pipe. A plurality of uniformly distributed inner heat exchange tubes (4) are connected between the pair of inner rings (21). A plurality of uniformly distributed outer heat exchange tubes (3) are arranged between the outer rings (22). The outer heat exchange tubes (3) are located between two adjacent inner heat exchange tubes (4). The outer heat exchange tubes (3) include an outer conduit (31). 1) An extension pipe (32) for heat exchange with the dust discharge pipe (1) is fixedly connected to the upper part. A multi-way air pipe (5) is connected to the air duct (2) through a three-way valve and communicates with the inner ring (21) and the outer ring (22). An air supply pipe (23) is connected to the side end of the outer ring (22). The specific working process of the control module is as follows: When the high dust content airflow is discharged, the temperature is judged first. If the temperature is higher than the set value, the externally introduced airflow exchanges heat with the dust discharge pipe (1) and is then sent to the regeneration heater. The hot airflow output by the regeneration heater is used for the regeneration of the dehumidification unit. After the dehumidification unit is regenerated, it outputs a high temperature and high humidity airflow. If the temperature is lower than the set value, the high-temperature and high-humidity airflow used for dehumidification unit to exhaust moisture will exchange heat with the powder discharge pipe (1) to maintain the stable temperature of the powder discharge pipe.

2. The energy-saving industrial workshop air conditioning system according to claim 1, characterized in that: The filter unit is equipped with a three-way valve at its input end, and a dust sensor is installed at the input end of the three-way valve. The two output ends of the three-way valve are connected to the filter unit and the dust discharge pipe, respectively.

3. An energy efficient industrial plant air conditioning system as set forth in Claim 1, characterized in that: The multi-directional air pipe (5) is connected to the inner ring (21) and the outer ring (22) through a three-way valve. The external heat exchanger (3) is detachably installed between the two outer rings (22). A moisture sensor is installed in the external heat exchanger (3). When the moisture content in the external heat exchanger (3) exceeds the set value in the non-air intake state, an early warning is issued. Then, the multi-directional air pipe (5) introduces external dry airflow to dry the external heat exchanger (3).

4. The energy efficient industrial plant air conditioning system of claim 1, wherein: The extension row (32) has an airflow channel communicating with the two outer rings (22). Multiple uniformly distributed heat exchange fins (33) are fixedly connected inside the extension row (32). One end of the heat exchange fin (33) is arranged in a ring shape inside the airflow channel. The other end of the heat exchange fin (33) passes through the extension row (32) and is inserted into the powder discharge pipe (1). Multiple heat-conducting fins corresponding to multiple outer heat exchange rows (3) are fixedly connected on the inner wall of the powder discharge pipe (1). Each heat-conducting fin is connected to multiple heat exchange fins (33) in an outer heat exchange row (3).

5. The energy efficient industrial plant air conditioning system of claim 1, wherein: During the heat exchange process between the high-temperature and high-humidity airflow and the dust discharge pipe (1), the flow rate of the high-temperature and high-humidity airflow is adjusted according to the temperature of the airflow with high dust content. When adjusting the flow rate, the flow rate is adjusted according to the ambient temperature, the current airflow temperature, and the heat loss rate of the discharge. The flow rate adjustment avoids the high-temperature and high-humidity airflow from being too cold after heat exchange and the humid airflow after heat exchange is discharged to the outside.

6. An energy efficient industrial plant air conditioning system as set forth in Claim 1, characterized in that: The heating unit adjusts its own operating power according to the airflow temperature output from the adjacent auxiliary heating unit to reduce the power consumption of the heating unit.

7. An energy efficient industrial plant air conditioning system as set forth in claim 1, characterized in that: The monitoring module is used to collect environmental parameters and air conditioning component operating parameters of each working area in the industrial workshop in real time. Environmental parameters include: temperature, relative humidity and dust concentration data. The working parameters of the air conditioning components include: airflow temperature and velocity at each heating unit and auxiliary heating unit on the dust discharge pipe (1), outlet temperature of the regenerator, inlet and outlet humidity difference of the dehumidification unit, moisture content of the external heat exchange tube in the auxiliary heating unit, medium temperature of the internal heat exchange tube, and working power of the heating unit. The data collected by the monitoring module is transmitted to the data storage module in real time.

8. An energy efficient industrial plant air conditioning system as set forth in Claim 1, characterized in that: The data storage module is used to store various key data generated during system operation and various preset threshold parameters of the system. The threshold parameters include: dust content determination threshold and airflow temperature target value in the dust discharge pipe (1).

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