Mine air conditioning unit and control method thereof

Abstract

This invention discloses a mine air conditioning unit and its control method. The mine air conditioning unit includes: a mixing system comprising a multi-stage combined cabinet, movably installed in the fresh air roadway and / or coal mining area; a refrigeration unit connected to the mixing system and located outside the mine; and a cooling tower connected to the refrigeration unit and located at the outlet of the exhaust air roadway. This invention solves the problems of single function and low efficiency of existing mine refrigeration equipment. While meeting the temperature drop requirements of the coal face, it also ensures the comfort of the entire roadway, improving overall comfort in the mine and increasing the efficiency of refrigeration equipment and overall mine operations.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to a mining air conditioning unit and its control method. Background Technology

[0002] With increasing mining depth, mine heat hazards are becoming increasingly prominent, seriously affecting the health of underground workers and ensuring safe coal mine production. High-temperature heat hazards have become a bottleneck restricting efficient coal mining. Currently, there are many mine cooling equipment and technologies available, but centralized cooling equipment suffers from problems such as high investment, high energy consumption, waste of fresh air and underground water, and frequent shutdowns due to high water temperatures. Furthermore, refrigeration equipment is generally concentrated at the coal face, making it difficult to meet the cooling needs of the entire mine, resulting in low equipment efficiency.

[0003] There is currently no effective solution to the problem of limited functionality and low efficiency of mine refrigeration equipment in related technologies. Summary of the Invention

[0004] This invention provides a mine air conditioning unit and its control method to at least solve the problems of single function and low efficiency of existing mine refrigeration equipment.

[0005] To address the aforementioned technical problems, according to one aspect of the present invention, a mine air conditioning unit is provided, applied in a mine, the mine including: a fresh air roadway, a coal mining area, and a exhaust air roadway; the mine air conditioning unit includes:

[0006] The mixed air system, including multi-stage combined cabinets, can be movably installed in the fresh air roadway and / or coal mining area;

[0007] The refrigeration unit, connected to the air mixing system, is located inside the mine.

[0008] The cooling tower, connected to the refrigeration unit, is located at the outlet of the exhaust air tunnel.

[0009] Furthermore, the modular cabinet includes:

[0010] The surface cooler includes an inlet pipe and an outlet pipe;

[0011] Hydraulic turbine device, connected to the outlet pipe;

[0012] The fan blades are connected to the hydraulic turbine device.

[0013] According to another aspect of the present invention, a control method for a mining air conditioning unit is provided, applied to the mining air conditioning unit as described above, comprising:

[0014] Monitor whether the fresh air intake is in operation;

[0015] If so, the temperature parameters of the mine shall be detected; among which, the temperature parameters shall include at least: the temperature of the coal mining area and the temperature of the fresh air roadway;

[0016] The multi-stage combination cabinet of the air mixing system is moved according to temperature parameters.

[0017] Furthermore, the movement of the multi-stage combination cabinet of the air mixing system is controlled according to temperature parameters, including:

[0018] Determine whether the temperature in the coal mining area is greater than or equal to the highest comfortable temperature in the coal mining area;

[0019] If so, control the multi-level combined cabinet to move towards the coal mining area;

[0020] Otherwise, determine whether the temperature of the fresh air duct is greater than or equal to the highest comfortable temperature of the fresh air duct;

[0021] When the temperature in the fresh air duct is greater than or equal to the highest comfortable temperature in the fresh air duct, the multi-stage combination cabinet is controlled to move towards the fresh air duct.

[0022] Furthermore, after moving the multi-stage combination cabinet of the air mixing system according to temperature parameters, it also includes:

[0023] Detect the temperature of fresh air and the temperature parameters of the mining air conditioning unit; the temperature parameters include at least the outlet air temperature and the condensate temperature.

[0024] The number of chiller units and cooling towers to be turned on is determined based on the fresh air temperature and temperature parameters, and the operation of the chiller units and cooling towers is controlled.

[0025] Furthermore, the number of chiller units and cooling towers to be activated is determined based on the fresh air temperature and temperature parameters, including:

[0026] The initial number of refrigeration units and cooling towers to be turned on is determined based on the fresh air temperature.

[0027] After the chiller and cooling tower are running at the initial number of units, the final number of chiller units to be turned on is determined based on the outlet air temperature and the power parameters of the chiller units, and the final number of cooling tower units to be turned on is determined based on the condensing temperature and the power parameters of the cooling towers.

[0028] Furthermore, the initial number of chiller units and cooling towers to be activated is determined based on the fresh air temperature, including:

[0029] When the fresh air temperature is higher than the first preset temperature, the initial number of units turned on is n1;

[0030] When the fresh air temperature is greater than the second preset temperature and less than or equal to the first preset temperature, the initial number of units turned on is n2;

[0031] When the fresh air temperature is lower than the second preset temperature, the initial number of units turned on is n3; where n4≤n3<n2<n1≤n0, n4 is the preset minimum number of units, and n0 is the preset maximum number of units.

[0032] Furthermore, the final number of refrigeration units to be activated is determined based on the outlet air temperature and the power parameters of the refrigeration unit, including:

[0033] When the outlet air temperature reaches the preset condition, the initial operating power of the refrigeration unit is detected;

[0034] Controls the shutdown of a preset number of refrigeration units; the current number of refrigeration units in operation is the adjusted number of units in operation.

[0035] Re-detect the outlet air temperature, and when the outlet air temperature reaches the preset condition, detect the current operating power of the refrigeration unit;

[0036] The final number of refrigeration units to be turned on is determined based on the initial operating power and the current operating power.

[0037] Furthermore, the final number of refrigeration units to be activated is determined based on the initial operating power and the current operating power, including:

[0038] When the initial operating power is greater than or equal to the current operating power, the final number of units to be turned on is determined as the number of units to be turned on.

[0039] If the initial operating power is less than the current operating power, the final number of units to be turned on is determined to be the initial number of units to be turned on.

[0040] Furthermore, the final number of cooling towers to be operated is determined based on the condensation temperature and the power parameters of the cooling towers, including:

[0041] Control the shutdown of one cooling tower;

[0042] After the cooling tower has been running for a preset time, check whether the condensation temperature is greater than or equal to the preset maximum condensation temperature.

[0043] If so, obtain the operating power of the cooling tower;

[0044] Otherwise, check if the current number of cooling towers in operation has reached the preset number. If the preset number has been reached, obtain the operating power of the cooling towers; otherwise, trigger the control to shut down one cooling tower.

[0045] Determine the minimum operating power of the cooling towers. The number of cooling towers that can be turned on at the minimum operating power is the final number of cooling towers that can be turned on.

[0046] According to another aspect of the present invention, a storage medium containing computer-executable instructions is provided, which, when executed by a computer processor, are used to perform the mining air conditioning unit control method as described above.

[0047] This invention provides a mine air conditioning unit, including a mixing system, a refrigeration unit, and a cooling tower. The mixing system includes a multi-stage combination cabinet, which can be movably installed in the fresh air roadway and / or coal mining area. This allows for intelligent arrangement of the combination cabinet according to the roadway conditions, effectively solving the problems of existing mine refrigeration equipment that only regulates the temperature of the coal face, resulting in limited functionality and low efficiency. While ensuring the temperature drop of the coal face meets the requirements, this invention also guarantees the comfort of the entire roadway, improving overall comfort in the mine and increasing the efficiency of refrigeration equipment and mine operations. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of an optional layout of a mining air conditioning unit according to an embodiment of the present invention;

[0049] Figure 2 This is a schematic diagram of an optional arrangement of a mixing system according to an embodiment of the present invention;

[0050] Figure 3 This is a schematic diagram of an optional structure of a mining air conditioning unit according to an embodiment of the present invention;

[0051] Figure 4 This is a schematic diagram of an optional structure of a combination cabinet according to an embodiment of the present invention;

[0052] Figure 5 This is an optional flowchart of a control method for a mining air conditioning unit according to an embodiment of the present invention;

[0053] Figure 6 This is an optional flowchart of a mixed air system control method according to an embodiment of the present invention;

[0054] Figure 7 This is an optional flowchart of a refrigeration unit control method according to an embodiment of the present invention;

[0055] Figure 8 This is an optional flowchart of a cooling tower control method according to an embodiment of the present invention. Detailed Implementation

[0056] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0057] Example 1

[0058] In a preferred embodiment 1 of the present invention, a mining air conditioning unit is provided, which is applied in mines. Specifically... Figure 1 The diagram shows one possible layout for the mine air conditioning unit, such as... Figure 1 As shown, the mine includes: a fresh air roadway, a coal mining area, and a exhaust air roadway. The mine's air conditioning unit includes:

[0059] The air mixing system 1, comprising multi-stage combined cabinets, is movably installed in the fresh air roadway and / or coal mining area; such as Figure 1 As shown, the mixed air system includes six combination cabinets arranged in the aisle. Fresh air is delivered from the ground and then enters the fresh air aisle, thus entering the combination cabinets in sequence. Figure 2 A schematic diagram showing one possible arrangement of the air mixing system is provided, such as... Figure 2 As shown, the first combined air cabinet processes a portion of the air volume, then the mixed air enters the second-stage combined air cabinet, and so on, entering the sixth-stage combined air cabinet before being delivered to the coal face for cooling. The combined air cabinets are arranged at varying intervals to meet the cooling and dehumidification needs of the entire roadway or just the coal face. When there is operational demand in the roadway, the combined air cabinets can be intelligently moved. One combined air cabinet is placed at the fresh air inlet to initially cool and dehumidify the fresh air, while the second to sixth-stage combined air cabinets are placed at the coal face to further cool and dehumidify it.

[0060] The mine air conditioning unit also includes: a refrigeration unit 2, connected to the mixing system 1, located inside the mine; and a cooling tower 3, connected to the refrigeration unit 2, located at the outlet of the exhaust air roadway. The closed-circuit cooling tower is placed on the exhaust air side underground, utilizing the exhaust air for cooling. The closed-circuit cooling tower uses a hydraulic fan and meets explosion-proof requirements.

[0061] In the above embodiments, a mine air conditioning unit is provided, including a mixing system, a refrigeration unit and a cooling tower. The mixing system includes a multi-stage combination cabinet, which can be movably installed in the fresh air roadway and / or coal mining area. Thus, the combination cabinet can be intelligently arranged according to the roadway conditions, effectively solving the problems of single function and low efficiency of existing mine refrigeration equipment. Under the premise of meeting the temperature drop requirements of the coal face working face, it can ensure the comfort of the entire roadway, improve the overall comfort of the mine, and improve the utilization efficiency of the refrigeration equipment and the working efficiency of the mine.

[0062] Figure 3 A schematic diagram of an alternative structure for the mine air conditioning unit is also shown, such as... Figure 3 As shown, the mine air conditioning unit also includes: cooling water pump 7, chilled water pump 8 and spray water pump 9.

[0063] Figure 4 An alternative structural diagram of the modular cabinet is also shown, such as... Figure 4As shown, the combined cabinet includes: a surface cooler 4, including an inlet pipe 41 and an outlet pipe 42; a hydraulic turbine device 5, connected to the outlet pipe 42; and a fan blade 6, connected to the hydraulic turbine device 5. Figure 4 The cabinet shown is a cabinet with a hydraulic fan. Chilled water enters the hydraulic turbine to drive the fan blades to rotate, and then the chilled water enters the surface coolers on the left and right sides to exchange heat with the fresh air.

[0064] The aforementioned mine air conditioning units are high-capacity chiller units and closed-loop cooling towers, meeting explosion-proof requirements. The modular cabinets can be adjusted in position, serving multiple purposes to reduce the temperature and humidity in the roadway while also reducing unit energy consumption.

[0065] Example 2

[0066] In a preferred embodiment 2 of the present invention, a control method for a mining air conditioning unit is provided, which is applied to the mining air conditioning unit in embodiment 1 above. Specifically, Figure 5 An optional flowchart of the method is shown, such as Figure 5 As shown, the method includes the following steps S502-S506:

[0067] S502: Monitor whether the fresh air duct is in operation;

[0068] S504: If so, detect the temperature parameters of the mine; the temperature parameters include at least: the temperature of the coal mining area and the temperature of the fresh air roadway;

[0069] S506: The multi-stage combination cabinet of the air mixing system is moved according to temperature parameters.

[0070] In the above embodiments, a mine air conditioning unit is provided, including a mixing system, a refrigeration unit and a cooling tower. The mixing system includes a multi-stage combination cabinet, which can be movably installed in the fresh air roadway and / or coal mining area. Thus, the combination cabinet can be intelligently arranged according to the roadway conditions, effectively solving the problems of single function and low efficiency of existing mine refrigeration equipment. Under the premise of meeting the temperature drop requirements of the coal face working face, it can ensure the comfort of the entire roadway, improve the overall comfort of the mine, and improve the utilization efficiency of the refrigeration equipment and the working efficiency of the mine.

[0071] Specifically, the movement of the multi-stage combination cabinets of the air mixing system is controlled according to temperature parameters, including:

[0072] Determine whether the temperature in the coal mining area is greater than or equal to the highest comfortable temperature in the coal mining area;

[0073] If so, control the multi-level combined cabinet to move towards the coal mining area;

[0074] Otherwise, determine whether the temperature of the fresh air duct is greater than or equal to the highest comfortable temperature of the fresh air duct;

[0075] When the temperature in the fresh air duct is greater than or equal to the highest comfortable temperature in the fresh air duct, the multi-stage combination cabinet is controlled to move towards the fresh air duct.

[0076] In a preferred embodiment 2 of the present invention, another control method for a mixed air system is also provided, specifically... Figure 6 An optional flowchart of the method is shown, such as Figure 6 As shown, the method includes the following steps S601-S606:

[0077] S601: Real-time detection of T1 and T2;

[0078] S602: Determine whether T1≥t3 is true. If yes, proceed to step S603; otherwise, proceed to step S604.

[0079] S603: Move one unit of the modular cabinet to the back;

[0080] S604: Determine whether T2≥t4 is true. If yes, proceed to step S606; otherwise, proceed to step S605.

[0081] S605: Maintain the existing layout;

[0082] S606: Move one unit of the modular cabinet forward.

[0083] The aforementioned intelligent mobile control cabinet, specifically, defines T1 as the temperature of the coal face, T2 as the temperature of the fresh air roadway, t3 as the highest comfortable temperature in the coal mining area, and t4 as the highest comfortable temperature in the fresh air roadway. When there is a work requirement in the roadway, this control logic is activated, detecting T1 and T2. When T1 ≥ t3, one cabinet moves backward, i.e., towards the coal mining area, prioritizing the cooling needs of the coal face. When T1 < t3 and T2 ≥ t4, one cabinet moves forward, i.e., towards the fresh air roadway. This ensures that the temperature reduction of the coal face meets the requirements while simultaneously maintaining the comfort of the entire roadway, thereby improving overall comfort in the mine and increasing work efficiency.

[0084] After controlling the movement of the multi-stage combination cabinet of the air mixing system according to temperature parameters, it also includes the operation control of the refrigeration unit and cooling tower.

[0085] Specifically, the temperature of the fresh air and the temperature parameters of the mining air conditioning unit are detected; the temperature parameters include at least the outlet air temperature and the condensing temperature; the number of refrigeration units and cooling towers to be turned on is determined based on the fresh air temperature and temperature parameters, and the operation of the refrigeration units and cooling towers is controlled.

[0086] The number of chiller units and cooling towers to be activated is determined based on the fresh air temperature and temperature parameters, including: determining the initial number of chiller units and cooling towers to be activated based on the fresh air temperature; after the chiller units and cooling towers are running according to the initial number of activations, determining the final number of chiller units to be activated based on the outlet air temperature and the power parameters of the chiller units, and determining the final number of cooling towers to be activated based on the condensing temperature and the power parameters of the cooling towers.

[0087] Optionally, the initial number of refrigeration units and cooling towers to be activated is determined based on the fresh air temperature, including: when the fresh air temperature is greater than a first preset temperature, the initial number of units activated is n1; when the fresh air temperature is greater than a second preset temperature and less than or equal to the first preset temperature, the initial number of units activated is n2; when the fresh air temperature is less than the second preset temperature, the initial number of units activated is n3; wherein, n4≤n3<n2<n1≤n0, n4 is the preset minimum number of units, and n0 is the preset maximum number of units.

[0088] The final number of refrigeration units to be activated is determined based on the outlet air temperature and the power parameters of the refrigeration units. This includes: detecting the initial operating power of the refrigeration units when the outlet air temperature reaches a preset condition; controlling the shutdown of a preset number of refrigeration units, with the current number of activated refrigeration units being the adjustable activation number; re-detecting the outlet air temperature, and detecting the current operating power of the refrigeration units when the outlet air temperature reaches a preset condition; and determining the final number of activated refrigeration units based on the initial and current operating power. If the initial operating power is greater than or equal to the current operating power, the final number of activated refrigeration units is determined as the adjustable activation number; if the initial operating power is less than the current operating power, the final number of activated refrigeration units is determined as the initial number of activated refrigeration units.

[0089] In a preferred embodiment 2 of the present invention, another method for controlling the refrigeration unit is also provided. Specifically... Figure 7 An optional flowchart of the method is shown, such as Figure 7 As shown, the method includes the following steps S701-S713:

[0090] S701: Real-time monitoring of T; T is the fresh air temperature.

[0091] S702: Determine whether t2≤T≤t1 is true. If yes, proceed to step S703; otherwise, proceed to step S707. t1 and t2 are empirical values, t2 is the first preset temperature, and t21 is the second preset temperature.

[0092] S703: Start 2 chiller units; when t1≤T≤t2, start two units based on experience;

[0093] S704: Determine whether Wa1≤Wa2 is true. If yes, proceed to step S706; otherwise, proceed to step S705. Wa1 is the power of turning on two chiller units, and Wa2 is the power of turning on one chiller unit. Determine whether the power of turning on one chiller unit or the power of turning on two chiller units is lower when the units meet the same air outlet temperature requirements.

[0094] S705: Enable 2 units or 1 unit;

[0095] S706: Remains unchanged;

[0096] S707: Determine whether T > t1 is true. If yes, proceed to step S708; otherwise, proceed to step S712. When T < t1, simply run one chiller unit and control it according to the load.

[0097] S708: Start 3 chiller units;

[0098] S709: Determine whether Wa3≤Wa4 is true. If yes, proceed to step S710; otherwise, proceed to step S711.

[0099] S710: Remains unchanged;

[0100] S711: Start 2 or 3 chillers; When T>t1, start three chillers first. Wa3 is the power of starting three chillers, Wa4 is the power of starting two chillers. The controller records the power corresponding to starting two chillers and three chillers respectively, and then selects the operation with lower energy consumption.

[0101] S712: Determine whether T < t2 is true. If so, proceed to step S713.

[0102] S713: Start one chiller unit. When T < t2, simply run one chiller unit and control it according to the load.

[0103] The final number of cooling towers to be activated is determined based on the condensing temperature and the power parameters of the cooling towers. This includes: controlling one cooling tower to shut down; detecting whether the condensing temperature is greater than or equal to the preset maximum condensing temperature after the cooling tower has been running for a preset time; if so, obtaining the operating power of the cooling tower; otherwise, detecting whether the current number of activated cooling towers has reached the preset number of activated cooling towers; if the preset number of activated cooling towers has been reached, obtaining the operating power of the cooling towers; otherwise, triggering the shutdown of one cooling tower; and determining the minimum operating power of the cooling towers. The number of cooling towers activated corresponding to the minimum operating power is the final number of cooling towers to be activated.

[0104] In a preferred embodiment 2 of the present invention, a cooling tower control method is also provided, specifically... Figure 8An optional flowchart of the method is shown, such as Figure 8 As shown, the method includes the following steps S801-S824:

[0105] S801: Real-time detection of Tc and T;

[0106] S802: Determine whether t2≤T≤t1 is true. If yes, proceed to step S803; otherwise, proceed to step S810.

[0107] S803: Initially start N1 closed-circuit cooling towers;

[0108] S804: N1 = N1-1, each mode runs for Z minutes;

[0109] S805: Determine whether T≥Tc1 is true. If yes, proceed to step S807; otherwise, proceed to step S806.

[0110] S806: Determine whether N1 = m1 is true. If yes, proceed to step S808; otherwise, proceed to step S804.

[0111] S807: The controller records the total power W1;

[0112] S808: The controller records the total power W2;

[0113] S809: The controller generates Mim(W);

[0114] S810: Determine whether T > t1 is true. If yes, proceed to step S807; otherwise, proceed to step S806.

[0115] S811: Initially activate N2 closed-circuit cooling towers;

[0116] S812: N2 = N2-1, each mode runs for Z minutes;

[0117] S813: Determine whether T≥Tc1 is true. If yes, proceed to step S815; otherwise, proceed to step S814.

[0118] S814: Determine whether N2 = m2 is true. If yes, proceed to step S816; otherwise, proceed to step S812.

[0119] S815: The controller records the total power W3;

[0120] S816: The controller records the total power W4;

[0121] S817: The controller generates Mim(W);

[0122] S818: Determine whether T < t2 is true. If so, proceed to step S819.

[0123] S819: Initially activate N4 closed-circuit cooling towers;

[0124] S820: Determine whether T≥Tc1 is true. If yes, proceed to step S823; otherwise, proceed to step S821.

[0125] S821: Determine whether N3 = m3 is true. If yes, proceed to step S822; otherwise, proceed to step S819.

[0126] S822: The controller records the total power W6;

[0127] S823: The controller records the total power W5;

[0128] S824: The controller generates Mim(W).

[0129] The above describes the cooling tower operation control scheme. Tc is the condensing temperature of the chiller, T is the fresh air temperature, N1, N2, and N3 are empirical values ​​for the number of closed-circuit cooling towers to be turned on, n1, n2, and n3 are the minimum empirical values ​​for the number of towers to be turned on, and Tc1 is the unit's condensing temperature limit. Optimization based on empirical values ​​can achieve rapid and accurate results. Tc and T are monitored in real time. When t1≤T≤t2, N1 closed-circuit cooling towers are initially turned on. Then, the number of closed-circuit cooling towers is reduced by one at a time, ensuring that the condensing temperature Tc < Tc1. After running for Z minutes, the controller records the total system power corresponding to each situation, thereby selecting the optimal power for operation. Each time a closed-circuit cooling tower is reduced (by closing the inlet valve of the closed-circuit cooling tower), the power of the cooling water pump and spray water pump, as well as the resistance of the water pipes, will decrease. However, the condensing temperature of the chiller will increase, and the power of the chiller will increase. At this point, an optimal solution will be found, and this logic will automatically optimize it. This method can save energy and improve the unit's energy efficiency.

[0130] Example 3

[0131] Based on the mining air conditioning unit control method provided in Embodiment 2 above, in the preferred embodiment 3 of the present invention, a storage medium containing computer-executable instructions is also provided. When the computer-executable instructions are executed by a computer processor, they are used to execute the mining air conditioning unit control method as described above.

[0132] In the above embodiments, a mine air conditioning unit is provided, including a mixing system, a refrigeration unit and a cooling tower. The mixing system includes a multi-stage combination cabinet, which can be movably installed in the fresh air roadway and / or coal mining area. Thus, the combination cabinet can be intelligently arranged according to the roadway conditions, effectively solving the problems of single function and low efficiency of existing mine refrigeration equipment. Under the premise of meeting the temperature drop requirements of the coal face working face, it can ensure the comfort of the entire roadway, improve the overall comfort of the mine, and improve the utilization efficiency of the refrigeration equipment and the working efficiency of the mine.

[0133] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not invented by the invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0134] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A mining air conditioning unit, applied in a mine, the mine comprising: Fresh air roadways, coal mining areas, and exhaust air roadways; characterized in that the mine air conditioning unit comprises: The mixed air system (1) includes a multi-stage combined cabinet, which is movably installed in the fresh air roadway and / or the coal mining area; wherein, the combined cabinet is arranged at different intervals, which can meet the cooling and dehumidification of the entire roadway or only meet the cooling of the coal mining face. When there is a working demand in the roadway, the combined cabinet can be intelligently moved in a certain way. The refrigeration unit (2) is connected to the air mixing system (1) and is located inside the mine. The cooling tower (3), connected to the refrigeration unit (2), is located at the outlet of the exhaust air tunnel; The combined cabinet includes: a surface cooler (4), including an inlet pipe (41) and an outlet pipe (42); a hydraulic turbine device (5), connected to the outlet pipe (42); and a fan blade (6), connected to the hydraulic turbine device (5).

2. A control method for a mining air conditioning unit, applied to the mining air conditioning unit as described in claim 1, characterized in that, include: Monitor whether the fresh air intake is in operation; If so, the temperature parameters of the mine are detected; wherein the temperature parameters include at least: the temperature of the coal mining area and the temperature of the fresh air roadway; The multi-stage combination cabinet of the air mixing system is moved according to the temperature parameters.

3. The method according to claim 2, characterized in that, Controlling the movement of the multi-stage combination cabinet of the air mixing system according to the temperature parameters includes: Determine whether the temperature in the coal mining area is greater than or equal to the highest comfortable temperature in the coal mining area; If so, control the multi-level combined cabinet to move towards the coal mining area; Otherwise, determine whether the temperature of the fresh air duct is greater than or equal to the highest comfortable temperature of the fresh air duct; When the temperature in the fresh air duct is greater than or equal to the highest comfortable temperature in the fresh air duct, the multi-stage combination cabinet is controlled to move towards the fresh air duct.

4. The method according to claim 2, characterized in that, After the multi-stage combination cabinet of the air mixing system is moved according to the temperature parameters, the following is also included: The temperature parameters of the fresh air and the mining air conditioning unit are detected; wherein the temperature parameters include at least the outlet air temperature and the condensate temperature. The number of refrigeration units and cooling towers to be turned on is determined based on the fresh air temperature and the temperature parameters, and the operation of the refrigeration units and cooling towers is controlled.

5. The method according to claim 4, characterized in that, The number of refrigeration units and cooling towers to be activated is determined based on the fresh air temperature and the temperature parameters, including: The initial number of refrigeration units and the cooling tower to be turned on is determined based on the fresh air temperature. After the refrigeration unit and the cooling tower are running according to the initial number of units started, the final number of units started by the refrigeration unit is determined based on the outlet air temperature and the power parameters of the refrigeration unit, and the final number of units started by the cooling tower is determined based on the condensation temperature and the power parameters of the cooling tower.

6. The method according to claim 5, characterized in that, The initial number of refrigeration units and the cooling tower to be activated is determined based on the fresh air temperature, including: When the fresh air temperature is greater than the first preset temperature, the initial number of units activated is n1; When the fresh air temperature is greater than the second preset temperature and less than or equal to the first preset temperature, the initial number of units to be turned on is n2; When the fresh air temperature is lower than the second preset temperature, the initial number of units to be turned on is n3; where n4≤n3<n2<n1≤n0, n4 is the preset minimum number of units, and n0 is the preset maximum number of units.

7. The method according to claim 5, characterized in that, The final number of refrigeration units to be activated is determined based on the outlet air temperature and the power parameters of the refrigeration unit, including: When the outlet air temperature reaches the preset condition, the initial operating power of the refrigeration unit is detected; Control the shutdown of a preset number of the refrigeration units, wherein the current number of refrigeration units in operation is the adjustable number of units in operation; The outlet air temperature is re-detected, and when the outlet air temperature reaches the preset condition, the current operating power of the refrigeration unit is detected. The final number of refrigeration units to be turned on is determined based on the initial operating power and the current operating power.

8. The method according to claim 7, characterized in that, The final number of refrigeration units to be activated is determined based on the initial operating power and the current operating power, including: When the initial operating power is greater than or equal to the current operating power, the final number of units to be turned on is determined as the adjusted number of units to be turned on. When the initial operating power is less than the current operating power, the final number of units activated is determined to be the initial number of units activated.

9. The method according to claim 5, characterized in that, The final number of cooling towers to be activated is determined based on the condensation temperature and the power parameters of the cooling tower, including: Control the shutdown of one of the cooling towers; After the cooling tower has been running for a preset time, check whether the condensation temperature is greater than or equal to the preset maximum condensation temperature. If so, obtain the operating power of the cooling tower; Otherwise, it checks whether the current number of cooling towers in operation has reached the preset number of operation. If the preset number of operation has been reached, it obtains the operating power of the cooling towers; otherwise, it triggers the control to shut down one of the cooling towers. The minimum operating power of the cooling tower is determined, and the number of cooling towers that are turned on corresponding to the minimum operating power is the final number of cooling towers that are turned on.

10. A storage medium containing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a computer processor, are used to perform the mining air conditioning unit control method as described in any one of claims 2 to 9.

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