Self-cleaning air supply system for precision cooling in deep coal mines

Abstract

This utility model relates to the field of cooling technology for mine working faces, and provides a self-cleaning air supply system for precise cooling in deep coal mines. It includes a normal temperature air passage, a refrigerant passage, a monitoring component, and a central processing unit. The normal temperature air passage is connected to the required cooling space in the mine via an air outlet base station and includes a detachable pipe. At least a portion of the refrigerant passage is coupled to at least a portion of the normal temperature air passage, and the refrigerant passage is suitable for heat exchange with the normal temperature air in the normal temperature air passage. The monitoring component is located on the air outlet base station and is suitable for detecting the temperature and humidity of the required cooling space. The central processing unit is communicatively connected to the monitoring component and is suitable for controlling the airflow in the normal temperature air passage based on the humidity and temperature detected by the monitoring component. This application achieves precise and convenient placement and movement of the air outlet, reduces cold air loss, and improves cooling efficiency, while precisely controlling the airflow according to actual airflow requirements.

Description

Technical Field

[0001] This utility model relates to the field of cooling technology for mine working faces, and in particular to a self-cleaning air supply system for precise cooling in deep coal mines. Background Technology

[0002] As mines in my country are being developed in greater depths, the heat hazards caused by deep-well mining in the harsh environment of high temperature and humidity are becoming increasingly serious. This problem seriously hinders the normal production of mines and has become one of the key factors affecting mining efficiency and miner safety.

[0003] As mining intensity increases, the underground mining areas and working faces expand, increasing the distance between the working faces and the cooling system outlets, thus requiring a corresponding increase in air volume. Therefore, the air supply volume and pressure of the mine's cooling system are adjusted accordingly with the mining intensity. With increased mine air intake, the frictional resistance of the airflow along the tunnels increases with the length of the ventilation route. Changes in tunnel cross-section and direction, as well as the increase in bifurcations and convergence points, increase local resistance to airflow, resulting in greater energy loss and cooling capacity depletion. Simultaneously, increased ventilation volume means increased power consumption and operating costs. Furthermore, excessively high wind speeds are detrimental to dust control, and excessive drafts can cause discomfort to miners near the air outlets.

[0004] In the relevant technical field, existing cooling devices cannot provide precise cooling while tunneling is underway, and the utilization rate of cooling capacity gradually decreases as the working face advances. Utility Model Content

[0005] This utility model provides a self-cleaning air supply system for precise cooling in deep coal mines, which solves the defects of existing cooling devices that cannot provide precise cooling while tunneling is underway, and whose cooling capacity utilization gradually decreases as the working face advances. It achieves precise and convenient placement and movement of the air outlet, reduces cold air loss and improves cooling efficiency, and can be precisely controlled according to the actual air volume demand.

[0006] This utility model provides a self-cleaning air supply system for precise cooling in deep coal mines, comprising:

[0007] A normal temperature air passage is provided, which is connected to the required cooling space in the mine through an air outlet base station, and the normal temperature air passage includes a detachable pipe.

[0008] A refrigerant passage, at least a portion of which is coupled to at least a portion of the ambient temperature air passage, wherein the refrigerant passage is adapted to exchange heat with the ambient temperature air in the ambient temperature air passage;

[0009] A monitoring component is provided on the air outlet base station, and the monitoring component is suitable for detecting the temperature and humidity of the space requiring cooling;

[0010] A central processing unit (CPU) is communicatively connected to the monitoring component, and the CPU is adapted to control the airflow of the ambient temperature ventilation channel based on the humidity and temperature detected by the monitoring component.

[0011] According to the present invention, a self-cleaning air supply system for precise cooling in deep coal mines is provided. The self-cleaning air supply system for precise cooling in deep coal mines further includes a main air fan. The main air fan is connected to the air outlet base station through the normal temperature air passage. The main air fan is suitable for supplying normal temperature airflow to the normal temperature air passage.

[0012] According to the present invention, a self-cleaning air supply system for precise cooling in deep coal mines is provided. The self-cleaning air supply system for precise cooling in deep coal mines further includes a heat exchanger. The heat exchanger is connected to the ambient temperature air passage and the refrigerant passage respectively. The heat exchanger is suitable for exchanging heat between the ambient temperature airflow in the ambient temperature air passage and the refrigerant in the refrigerant passage.

[0013] According to the present invention, a self-cleaning air supply system for precise cooling in deep coal mines is provided, which further includes a self-cleaning circuit. The self-cleaning circuit is connected to the ambient temperature air passage and is suitable for reverse cleaning of the ambient temperature air passage.

[0014] According to the present invention, a self-cleaning air supply system for precise cooling in deep coal mines is provided. The self-cleaning circuit is equipped with a back-blowing air fan and a one-way valve. The ambient temperature air passage is equipped with a bypass port. A first electrically controlled valve is provided at the bypass port of the ambient temperature air passage. The first electrically controlled valve is installed near the air inlet of the ambient temperature air passage. The back-blowing air fan is signal-connected to the central processing unit. The one-way valve is connected between the back-blowing air fan and the ambient temperature air passage. The back-blowing air fan is suitable for providing reverse airflow. The reverse airflow is delivered to the ambient temperature air passage after passing through the one-way valve and then blown out from the bypass port.

[0015] According to the present invention, a self-cleaning air supply system for precise cooling in deep coal mines is provided, wherein a second electrically controlled valve is provided on the refrigerant passage, the second electrically controlled valve is signal-connected to the central processing unit, and the second electrically controlled valve is suitable for controlling the on / off state of the refrigerant passage.

[0016] According to the present invention, a self-cleaning air supply system for precise cooling in deep coal mines is provided, wherein a third electrically controlled valve is also provided on the normal temperature air passage, and the third electrically controlled valve is installed behind the self-cleaning circuit and the normal temperature air passage.

[0017] According to the present invention, a self-cleaning air supply system for precise cooling in deep coal mines is provided, wherein the outer surface of the heat exchanger is provided with an anti-corrosion fluorocarbon coating.

[0018] According to the present invention, a self-cleaning air supply system for precise cooling in deep coal mines is provided, wherein a dust removal filter is provided at the air inlet of the main air fan.

[0019] According to the self-cleaning air supply system for precise cooling in deep coal mines provided by this utility model, the monitoring component includes:

[0020] A temperature sensor, which is suitable for detecting real-time temperature information of a space requiring cooling;

[0021] A humidity sensor, which is suitable for detecting real-time humidity information of a space requiring cooling;

[0022] A flow sensor, which is suitable for detecting the real-time airflow of the air outlet base station.

[0023] This utility model provides a self-cleaning air supply system for precise cooling in deep coal mines. The ambient temperature air passage is connected to the air outlet base station via a detachable pipe. The length of the detachable pipe can be changed as needed to change the position of the air outlet base station, achieving precise cooling to the cooling surface. At the same time, the monitoring components detect the temperature and humidity of the space requiring cooling in real time, allowing the central processor to accurately control the air outlet parameters. This enables the system to adjust synchronously and flexibly change the air outlet position according to the needs of the working face, thereby improving the system's cooling efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a connection diagram of the self-cleaning air supply system for precise cooling in deep coal mines provided by this utility model.

[0026] Figure label:

[0027] 10. Self-cleaning air supply system for precision cooling in deep coal mines;

[0028] 100. Normal temperature air passage; 110. Main air fan; 120. Air outlet base station; 130. First electrically controlled valve; 140. Third electrically controlled valve; 150. Bypass port; 160. Detachable duct;

[0029] 200. Refrigerant passage; 210. Second electrically controlled valve; 220. Refrigerant inlet; 230. Refrigerant outlet;

[0030] 300. Central Processing Unit;

[0031] 400. Heat exchanger;

[0032] 500. Self-cleaning circuit; 510. Backflush air blower; 520. Check valve. Detailed Implementation

[0033] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0034] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0036] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] The following is combined Figure 1 The self-cleaning air supply system for precise cooling in deep coal mines provided by this utility model will be described in detail through specific embodiments and application scenarios.

[0039] In the embodiments of the utility model, reference is made to... Figure 1 A self-cleaning air supply system 10 for precise cooling in deep coal mines includes a normal temperature air passage 100, a refrigerant passage 200, a monitoring component, and a central processing unit 300. The normal temperature air passage 100 is connected to the required cooling space in the mine via an air outlet base station 120 and includes a detachable pipe 160. At least a portion of the refrigerant passage 200 is coupled to at least a portion of the normal temperature air passage 100, and the refrigerant passage 200 is suitable for heat exchange with the normal temperature air in the normal temperature air passage 100. The monitoring component is located on the air outlet base station 120 and is suitable for detecting the temperature and humidity of the required cooling space. The central processing unit 300 is communicatively connected to the monitoring component and is suitable for controlling the airflow of the normal temperature air passage 100 based on the humidity and temperature detected by the monitoring component.

[0040] The ambient temperature air passage 100 is connected to the cooling space of the mine through the air outlet base station 120 to ensure that the cold air can be accurately delivered to the cooling surface.

[0041] The ambient temperature air passage 100 includes a detachable duct 160, which allows the system to change the length of the detachable duct 160 as needed to change the position of the air outlet base station 120 and achieve precise cooling to the cooling surface.

[0042] At least a portion of the refrigerant passage 200 is coupled to at least a portion of the ambient temperature air passage 100. The refrigerant in the refrigerant passage 200 exchanges heat with the ambient temperature air through a heat exchanger 400 or other means, absorbing heat from the ambient temperature air and cooling it down.

[0043] After completing heat exchange, the refrigerant flows back to the ground processing unit from the refrigerant outlet 230, is recooled, and then enters the refrigerant inlet for recycling.

[0044] The monitoring component is located on the air outlet base station 120 and can detect the temperature and humidity in the space requiring cooling in real time. The monitoring component sends the detected data to the central processor 300 as a basis for adjusting the air outlet parameters.

[0045] The central processing unit 300 communicates with the monitoring component and receives temperature and humidity data from it. Based on the monitored humidity and temperature data, the central processing unit 300 precisely controls the airflow in the ambient temperature air passage 100 to achieve the desired cooling effect. When the monitoring component detects that the temperature or humidity exceeds the set threshold, the central processing unit 300 automatically adjusts the power of the main air fan 110 and other relevant parameters to ensure that the environmental conditions within the cooled space meet the predetermined requirements.

[0046] Optionally, the detachable pipe 160 is connected using high-pressure corrosion-resistant clamps. The clamp's egg-neck structure design makes the installation and disassembly of the detachable pipe 160 simple and quick, facilitating one-handed operation. The design of the detachable pipe 160 allows the system to quickly adjust the air outlet position according to changes in the mine working face, achieving precise, follow-up cooling.

[0047] The ambient temperature air passage 100 of this application is connected to the air outlet base station 120 through a detachable pipe 160. The length of the detachable pipe 160 can be changed as needed to change the position of the air outlet base station 120, so as to achieve precise cooling to the cooling surface. At the same time, the temperature and humidity of the space requiring cooling are detected in real time by the monitoring component, so that the central processing unit 300 can accurately control the air outlet parameters, thereby enabling the system to adjust synchronously and flexibly change the air outlet position according to the needs of the working surface, thereby improving the cooling efficiency of the system.

[0048] Reference Figure 1 In some embodiments, the self-cleaning air supply system 10 for precise cooling in deep coal mines also includes a main air fan 110, which is connected to the air outlet base station 120 through a normal temperature air passage 100. The main air fan 110 is suitable for supplying normal temperature airflow to the normal temperature air passage 100.

[0049] Understandably, the main air fan 110 is connected to the air outlet base station 120 via the ambient temperature air passage 100, forming a complete air circulation path. When the main air fan 110 starts, it draws in ambient temperature air from outside and pushes it into the ambient temperature air passage 100. In the ambient temperature air passage 100, the airflow provided by the main air fan 110 exchanges heat with the refrigerant in the refrigerant passage 200, thereby cooling the air. The cooled air is then delivered to the required cooling space in the mine through the air outlet base station 120 to achieve a cooling effect.

[0050] The operation of the main air blower 110 is typically controlled by the central processing unit 300. Based on real-time temperature and humidity data of the required cooling space in the mine monitored by the monitoring components, the central processing unit 300 can adjust the speed of the main air blower 110 or its on / off status, thereby achieving precise control of the airflow. This precise control helps ensure that the cooling effect meets preset requirements while avoiding unnecessary energy consumption.

[0051] Reference Figure 1 In some embodiments, the self-cleaning air supply system 10 for precise cooling in deep coal mines also includes a heat exchanger 400, which is connected to the ambient temperature air passage 100 and the refrigerant passage 200 respectively. The heat exchanger 400 is suitable for exchanging heat between the ambient temperature airflow in the ambient temperature air passage 100 and the refrigerant in the refrigerant passage 200.

[0052] It is understandable that the heat exchanger 400 is connected to the ambient temperature air passage 100 and the refrigerant passage 200, forming a bridge for heat exchange. When the ambient temperature air flows in the ambient temperature air passage 100, it will pass through the heat exchanger 400; at the same time, when the refrigerant circulates in the refrigerant passage 200, it will also flow through the heat exchanger 400.

[0053] When the ambient airflow and the refrigerant meet in the heat exchanger 400, heat exchange occurs between them. Since the temperature of the refrigerant is typically lower than that of the ambient airflow, the refrigerant absorbs heat from the ambient airflow, thus cooling it. The cooled airflow is then delivered to the required cooling space in the mine through the exhaust station 120.

[0054] Reference Figure 1 In some embodiments, a self-cleaning circuit 500 is also included, which is connected to the ambient temperature air passage 100 and is suitable for reverse cleaning of the ambient temperature air passage 100.

[0055] Understandably, the primary function of the self-cleaning circuit 500 is to perform reverse cleaning of the ambient temperature air passage 100, that is, to remove blockages from the pipes by blowing air in the opposite direction. Through periodic or automatically triggered reverse cleaning processes, blockages in the pipes can be effectively reduced, keeping them clear. Reducing pipe blockage lowers system air resistance, improves heat exchange efficiency, and thus enhances cooling performance. Regular self-cleaning also helps extend the system's lifespan and reduce maintenance frequency and costs.

[0056] The self-cleaning circuit 500 is connected to the ambient temperature air passage 100, allowing the high-pressure gas generated by the backflow blower to purge the pipes in the ambient temperature air passage 100 in reverse. The central processing unit 300 determines whether the self-cleaning circuit 500 needs to be activated based on data fed back from the monitoring components. When an abnormal airflow is detected in the ambient temperature air passage 100, the central processing unit 300 will trigger the self-cleaning program.

[0057] Reference Figure 1 In some embodiments, the self-cleaning circuit 500 is provided with a back-blowing air fan 510 and a one-way valve 520, and the normal temperature air passage 100 is provided with a bypass port 150. The normal temperature air passage 100 is provided with a first electrically controlled valve 130 corresponding to the bypass port 150. The first electrically controlled valve 130 is installed close to the air inlet of the normal temperature air passage 100. The back-blowing air fan 510 is connected to the central processing unit 300. The one-way valve 520 is connected between the back-blowing air fan 510 and the normal temperature air passage 100. The back-blowing air fan 510 is suitable for providing reverse airflow. The reverse airflow is delivered to the normal temperature air passage 100 after passing through the one-way valve 520, and then blown out from the bypass port 150.

[0058] Understandably, the backflush air blower 510 provides a high-pressure reverse airflow to clear blockages in the ambient temperature air passage 100. A one-way valve 520 ensures the reverse airflow flows in only one direction, preventing forward airflow from entering the self-cleaning circuit 500. A bypass port 150 is located on the ambient temperature air passage 100 to discharge blockages carried by the reverse airflow. A first electrically controlled valve 130 is installed in the ambient temperature air passage 100 near the air inlet to control the opening and closing of the bypass port 150. The central processing unit 300 is signal-connected to the backflush air blower 510 to control its start and stop.

[0059] Specifically, the central processing unit 300 determines whether a self-cleaning program needs to be initiated based on data from the monitoring components. When the difference between the airflow in the normal temperature air passage 100 and the airflow from the main air fan 110 exceeds a preset threshold, it indicates a possible blockage. The central processing unit 300 controls the activation of the back-blowing air fan 510 via a signal connection. The high-pressure reverse airflow generated by the back-blowing air fan 510 is delivered to the normal temperature air passage 100 after passing through the one-way valve 520. The central processing unit 300 controls the opening of the first electrically controlled valve 130, allowing the reverse airflow to be discharged through the bypass port 150. The reverse airflow blows the blockage out of the bypass port 150 through the normal temperature air passage 100, achieving reverse cleaning. After self-cleaning is completed, the central processing unit 300 controls the shutdown of the back-blowing air fan 510 and the first electrically controlled valve 130, and the system returns to normal operation mode to continue cooling.

[0060] In some embodiments, the first electrically controlled valve 130 is an electrically controlled three-way valve, which can connect the main path and the air inlet in the normal air supply state of the ambient temperature air passage 100, and close the bypass port 150; while in reverse cleaning, the main path and the bypass port 150 of the ambient temperature air passage 100 are connected, and the air inlet is closed, so as to realize directional cleaning, prevent the blockage from flowing back to the main air fan 110, and improve the system reliability.

[0061] Reference Figure 1 In some embodiments, a second electrically controlled valve 210 is provided on the refrigerant passage 200. The second electrically controlled valve 210 is connected to the central processing unit 300 by signal and is suitable for controlling the opening and closing of the refrigerant passage 200.

[0062] Understandably, the second electrically controlled valve 210 is installed on the refrigerant passage 200, and its main function is to control the opening and closing of the refrigerant passage 200. By controlling the flow of refrigerant, the second electrically controlled valve 210 can adjust the cooling effect of the system to meet different cooling needs. The second electrically controlled valve 210 is signal-connected to the central processing unit 300, enabling the central processing unit 300 to intelligently control the opening and closing of the second electrically controlled valve 210 based on real-time monitored data (such as ambient temperature, system pressure, cooling efficiency, etc.) or preset cooling strategies.

[0063] Reference Figure 1 In some embodiments, a third electrically controlled valve 140 is also provided on the ambient temperature air passage 100. The third electrically controlled valve 140 is installed behind the self-cleaning circuit 500 which is connected to the ambient temperature air passage 100.

[0064] Understandably, the third electrically controlled valve 140 is installed downstream of the self-cleaning circuit 500, which connects to the ambient temperature air passage 100, to control the on / off state of the ambient temperature air passage 100 during the self-cleaning process. During self-cleaning, the third electrically controlled valve 140 can close the ambient temperature air passage 100, ensuring that the reverse airflow can completely reverse-direction clean the pipe, thus improving the cleaning effect. By controlling the on / off state of the ambient temperature air passage 100, the mixing of ambient temperature air and reverse airflow during self-cleaning can be avoided, ensuring the high efficiency of the cleaning process and the stability of the system.

[0065] Reference Figure 1 In some embodiments, the outer surface of the heat exchanger 400 is provided with an anti-corrosion fluorocarbon coating.

[0066] Understandably, anti-corrosion fluorocarbon coatings possess excellent weather resistance, corrosion resistance, wear resistance, and stain resistance. Applying an anti-corrosion fluorocarbon coating to the outer surface of the heat exchanger 400 can effectively resist the erosion of the outer surface of the heat exchanger 400 by corrosive gases and particulate matter in the coal mine environment, thereby extending the service life of the heat exchanger 400.

[0067] Reference Figure 1 In some embodiments, a dust filter is provided at the air inlet of the main air fan 110.

[0068] Understandably, the main function of the dust filter is to filter the air entering the main air blower 110, removing dust, particulate matter, and other impurities. This not only protects the blower from wear and tear and malfunctions but also improves the overall operating efficiency and stability of the system.

[0069] Alternatively, the dust filter can be a nylon dust filter or a metal dust filter, etc., without any special limitation.

[0070] Reference Figure 1 In some embodiments, the monitoring components include a temperature sensor, a humidity sensor, and a flow sensor. The temperature sensor is suitable for detecting real-time temperature information of the space requiring cooling; the humidity sensor is suitable for detecting real-time humidity information of the space requiring cooling; and the flow sensor is suitable for detecting real-time airflow of the air outlet base station 120.

[0071] Understandably, temperature sensors are primarily used to detect real-time temperature information in spaces requiring cooling. By accurately measuring the temperature within the space, the system can intelligently adjust the cooling capacity to meet the temperature requirements of the coal mine operating area.

[0072] A humidity sensor is used to detect real-time humidity information in spaces requiring cooling. By measuring the water vapor content in the air, the system can intelligently adjust humidification or dehumidification functions to maintain the humidity within a suitable range in the coal mine operating area.

[0073] The flow sensor is mainly used to detect the real-time airflow of the air outlet base station 120. By monitoring the airflow, the system can intelligently adjust the fan speed or the damper opening to ensure that the system outputs sufficient airflow to meet the demand.

[0074] In this embodiment, the temperature sensor, humidity sensor, and flow sensor work together to provide the system with real-time environmental parameters and operating status information. Based on this information, the system can intelligently adjust the cooling capacity, humidification / dehumidification functions, and airflow to meet the needs of the coal mine operating area.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-cleaning air supply system for precision refrigeration of deep coal mines, characterized in that, include: A normal temperature air passage is provided, which is connected to the required cooling space in the mine through an air outlet base station, and the normal temperature air passage includes a detachable pipe. A refrigerant passage, at least a portion of which is coupled to at least a portion of the ambient temperature air passage, wherein the refrigerant passage is adapted to exchange heat with the ambient temperature air in the ambient temperature air passage; A monitoring component is provided on the air outlet base station, and the monitoring component is suitable for detecting the temperature and humidity of the space requiring cooling; A central processing unit (CPU) is communicatively connected to the monitoring component, and the CPU is adapted to control the airflow of the ambient temperature ventilation channel based on the humidity and temperature detected by the monitoring component. A self-cleaning circuit is connected to the ambient temperature air passage, and the self-cleaning circuit is suitable for reverse cleaning of the ambient temperature air passage; The self-cleaning circuit is equipped with a back-blowing air fan and a one-way valve. The normal temperature air passage is equipped with a bypass port. A first electrically controlled valve is provided at the bypass port of the normal temperature air passage. The first electrically controlled valve is installed near the air inlet of the normal temperature air passage. The back-blowing air fan is signal-connected to the central processing unit. The one-way valve is connected between the back-blowing air fan and the normal temperature air passage. The back-blowing air fan is suitable for providing reverse airflow. The reverse airflow is delivered to the normal temperature air passage after passing through the one-way valve, and then blown out from the bypass port.

2. The self-cleaning air supply system for precision refrigeration of deep coal mines according to claim 1, characterized in that, The self-cleaning air supply system for precise cooling in deep coal mines also includes a main air fan, which is connected to the air outlet base station through the ambient temperature air passage. The main air fan is suitable for supplying ambient temperature airflow to the ambient temperature air passage.

3. The self-cleaning air supply system for precision refrigeration of deep coal mines according to claim 1, characterized in that, The self-cleaning air supply system for precise cooling in deep coal mines also includes a heat exchanger, which is connected to the ambient temperature air passage and the refrigerant passage respectively. The heat exchanger is suitable for exchanging heat between the ambient temperature airflow in the ambient temperature air passage and the refrigerant in the refrigerant passage.

4. The self-cleaning air supply system for precision cooling in deep coal mines according to any one of claims 1-3, characterized in that, A second electrically controlled valve is provided on the refrigerant passage. The second electrically controlled valve is connected to the central processing unit via a signal and is used to control the opening and closing of the refrigerant passage.

5. The self-cleaning air supply system for precision cooling in deep coal mines according to claim 1, characterized in that, A third electrically controlled valve is also provided on the normal temperature air passage, and the third electrically controlled valve is installed behind the self-cleaning circuit that connects to the normal temperature air passage.

6. The self-cleaning air supply system for precision cooling in deep coal mines according to claim 3, characterized in that, The outer surface of the heat exchanger is coated with an anti-corrosion fluorocarbon coating.

7. The self-cleaning air supply system for precision cooling in deep coal mines according to claim 2, characterized in that, A dust filter is installed at the air inlet of the main air fan.

8. The self-cleaning air supply system for precision cooling in deep coal mines according to any one of claims 1-3, characterized in that, The monitoring components include: A temperature sensor, which is suitable for detecting real-time temperature information of a space requiring cooling; A humidity sensor, which is suitable for detecting real-time humidity information of a space requiring cooling; A flow sensor, which is suitable for detecting the real-time airflow of the air outlet base station.

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