Mine air conditioning and control method

Abstract

The present disclosure relates to a mine air conditioner and a control method. The mine air conditioner includes: a refrigeration unit; a first evaporator group, including at least one cooling air evaporator, at least one cooling air evaporator is connected in parallel to the refrigeration unit; and a second evaporator group, including at least one cooling liquid evaporator, at least one cooling liquid evaporator is connected in parallel to the refrigeration unit; at least one of the at least one cooling air evaporator, and / or at least one of the at least one cooling liquid evaporator is in an operating state. When in an area with a small demand for cooling, at least one of the at least one cooling air evaporator can be put into an operating state, and when in an area with a large demand for cooling, at least one of the at least one cooling liquid evaporator can be put into an operating state. The mine air conditioner can be applied to both mine excavation working faces and mining working face environments, thereby improving the versatility and utilization rate of the mine air conditioner underground and reducing costs.

Description

Technical Field

[0001] The present disclosure relates to the field of refrigeration technology, and in particular to a mine air conditioner and a control method thereof. Background Art

[0002] With increasing coal mining, shallow coal resources are gradually decreasing, and mining depths are increasing. According to some measurements, the global average geothermal gradient is approximately 3°C / 100m. Therefore, the heat generated during coal mining primarily comes from rock temperature as mining depth increases, as well as heat dissipation from large electromechanical equipment. Heat damage not only worsens the working environment in coal mining, harms the health of frontline production workers, but also increases the frequency of coal mine accidents. Some related technologies use either cold air or cold water for cooling, failing to simultaneously meet the cooling needs of both the tunneling and mining working faces. Summary of the Invention

[0003] Some embodiments of the present disclosure provide a mine air conditioner and control method for alleviating the inability of mine refrigeration equipment to simultaneously meet the cooling requirements of both the tunneling working face and the mining working face.

[0004] In one aspect of the present disclosure, there is provided a mine air conditioner, comprising:

[0005] Refrigeration units;

[0006] a first evaporator group, comprising at least one cooling air type evaporator, wherein the at least one cooling air type evaporator is connected in parallel to the refrigeration unit; and

[0007] a second evaporator group, comprising at least one cooling liquid type evaporator, wherein the at least one cooling liquid type evaporator is connected in parallel to the refrigeration unit;

[0008] At least one of the at least one air-cooling evaporator and / or at least one of the at least one liquid-cooling evaporator is in operation.

[0009] In some embodiments, the mine air conditioner also includes an air duct, the air inlet end of the air duct is connected to the first cooling air evaporator among the at least one cooling air evaporator, the air duct is configured to be arranged in the excavation tunnel, and the air outlet end of the air duct is configured to extend to the excavation working face.

[0010] In some embodiments, the mine air conditioner further comprises an air cooler group, a first cooling liquid evaporator of the at least one cooling liquid evaporator is connected to the air cooler group via a pipeline, and the air cooler group is configured to be arranged in an excavation tunnel.

[0011] In some embodiments, the mine air conditioner further comprises an air cooler group, a first cooling liquid evaporator of the at least one cooling liquid evaporator is connected to the air cooler group via a pipeline, and the air cooler group is configured to be arranged in an excavation tunnel.

[0012] In some embodiments, the refrigeration unit includes a first refrigeration host, and the first air-cooling evaporator and the first liquid-cooling evaporator are connected in parallel to the first refrigeration host.

[0013] In some embodiments, the refrigeration unit includes a first refrigeration host and a second refrigeration host, the first air-cooling evaporator is connected to the first refrigeration host, and the first liquid-cooling evaporator is connected to the second refrigeration host.

[0014] In some embodiments, the mine air conditioner further comprises an air cooler group, a first cooling liquid evaporator of the at least one cooling liquid evaporator is connected to the air cooler group via a pipeline, and the air cooler group is configured to be installed at a mining working face.

[0015] In some embodiments, the mine air conditioner further comprises an air cooler group, wherein the first cooling liquid evaporator and the second cooling liquid evaporator in the at least one cooling liquid evaporator are respectively connected to the air cooler group through pipelines, and the air cooler group is configured to be installed at a mining working face.

[0016] In some embodiments, the refrigeration unit includes a first refrigeration host, and the first cooling liquid evaporator and the second cooling liquid evaporator are connected in parallel to the first refrigeration host.

[0017] In some embodiments, the refrigeration unit includes a first refrigeration host and a second refrigeration host, the first cooling liquid evaporator is connected to the first refrigeration host, and the second cooling liquid evaporator is connected to the second refrigeration host.

[0018] In some embodiments, the mine air conditioner also includes at least one air duct or at least one air cooler group, and the at least one air duct is respectively connected one-to-one with the at least one cooling air evaporator; and the at least one air cooler group is respectively connected one-to-one with the at least one cooling liquid evaporator.

[0019] In some embodiments, the mine air conditioner further comprises a cooling tower connected to the refrigeration unit.

[0020] In one aspect of the present disclosure, a method for controlling the above-mentioned mine air conditioner is provided, which comprises the following steps:

[0021] selecting at least one of the at least one cooling air evaporator to provide cooling to the excavation working face;

[0022] At least one of the at least one cooling liquid evaporator is selected to provide cooling to the mining face.

[0023] In some embodiments, a method for controlling a mine air conditioner includes the following steps: selecting at least one of the at least one cooling liquid evaporator to provide cooling for the heading tunnel.

[0024] Based on the above technical solution, the present disclosure has at least the following beneficial effects:

[0025] In some embodiments, the mine air conditioner includes a first evaporator group and a second evaporator group, the first evaporator group includes at least one cooling air evaporator, the second evaporator group includes at least one cooling liquid evaporator, at least one of the at least one cooling air evaporator, and / or at least one of the at least one cooling liquid evaporator is in a working state; when in an area with a smaller cooling demand, at least one of the at least one cooling air evaporator can be in a working state, and when in an area with a larger cooling demand, at least one of the at least one cooling liquid evaporator can be in a working state, which can be applicable to both mine excavation working face and mining working face environment, improve the versatility of mine air conditioners underground, improve equipment utilization rate, and reduce the cost of manufacturing mine air conditioning refrigeration equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0027] Figure 1 A schematic diagram of a mine air conditioner according to some embodiments of the present disclosure;

[0028] Figure 2 A schematic diagram of a mine air conditioner provided according to some embodiments of the present disclosure being applied to an excavation working face;

[0029] Figure 3 This is a schematic diagram of the application of a mine air conditioner provided according to some embodiments of the present disclosure to a mining working face.

[0030] The reference numerals in the accompanying drawings are described as follows:

[0031] 1-refrigeration unit; 11-first refrigeration host; 12-second refrigeration host;

[0032] 2-first evaporator group; 21-cooling air evaporator; 211-first cooling air evaporator;

[0033] 3-second evaporator group; 31-cooling liquid type evaporator; 311-first cooling liquid type evaporator; 312-second cooling liquid type evaporator;

[0034] 4-Hair duct;

[0035] 5-air cooler group; 51-air cooler;

[0036] 6-Cooling tower;

[0037] 71 - first valve; 72 - second valve; 73 - third valve; 74 - fourth valve;

[0038] 100-excavation working face; 200-excavation tunnel; 300-mining working face.

[0039] It should be understood that the size of each part shown in the drawings is not drawn according to the actual proportional relationship.In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0040] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure, its application, or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions, and numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0041] The terms "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The terms "include" or "comprises" and similar terms mean that the elements before the term include the elements listed after the term, and do not exclude the possibility of also including other elements. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] In the present disclosure, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be not directly connected to the other device but with an intervening device.

[0043] All terms (including technical or scientific terms) used in this disclosure have the same meaning as those understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined herein.

[0044] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0045] Figure 1 Schematic diagram of the structure of some embodiments of mine air conditioners according to the present disclosure. Figure 1 In some embodiments, the mine air conditioner includes a refrigeration unit 1 , a first evaporator group 2 and a second evaporator group 3 .

[0046] The refrigeration unit 1 is used to provide refrigerant.

[0047] The first evaporator group 2 includes at least one cooling air evaporator 21 , and the at least one cooling air evaporator 21 is connected in parallel to the refrigeration unit 1 .

[0048] The second evaporator group 3 includes at least one cooling liquid type evaporator 31 , and the at least one cooling liquid type evaporator 31 is connected in parallel to the refrigeration unit 1 .

[0049] At least one of the at least one air-cooling evaporator 21 and / or at least one of the at least one liquid-cooling evaporator 31 is in operation.

[0050] The first evaporator group 2 and the second evaporator group 3 are connected in parallel to the refrigeration unit 1 .

[0051] In some related technologies, mine cooling equipment uses either cold air or cold water to provide cooling. Using cold air to provide cooling is suitable for areas with low cooling demand, while using cold water to provide cooling is suitable for areas with high cooling demand. During the mining process in an underground coal mine, a tunnel is first excavated to form the heading face, and then two heading lanes intersect to form the mining face area. The cooling demand of the working face increases during this process. However, neither cold air nor cold water units can simultaneously meet the cooling needs of both the heading face and the mining face.

[0052] Based on this, the mine air conditioner provided by the embodiment of the present disclosure includes a first evaporator group 2 and a second evaporator group 3. The first evaporator group 2 includes at least one cooling air evaporator 21, and the second evaporator group 3 includes at least one cooling liquid evaporator 31. At least one of the at least one cooling air evaporator 21, and / or at least one of the at least one cooling liquid evaporator 31 are in working condition; when in an area with less cooling demand, at least one of the at least one cooling air evaporator 21 can be in working condition, and when in an area with greater cooling demand, at least one of the at least one cooling liquid evaporator 31 can be in working condition. It can be applicable to both mine excavation working face and mining working face environment, can improve the versatility of mine air conditioners underground, improve equipment utilization rate, and reduce the cost of manufacturing mine air conditioning refrigeration equipment.

[0053] The refrigeration unit 1 includes components such as a compressor and a condenser.

[0054] The cooling air evaporator 21 includes components such as a thermal expansion valve and a heat exchanger.

[0055] The cooling air evaporator 21 is used to cool the air, and uses the cooled air as a refrigerant to provide cooling capacity to equipment or environments that require cooling.

[0056] The liquid cooling evaporator 31 is used to cool the liquid and use the cooled liquid as a refrigerant to provide cooling to equipment or environments that require cooling.

[0057] The at least one cooling air type evaporator 21 may include one, two, three, four or more cooling air type evaporators 21 .

[0058] The at least one cooling liquid type evaporator 31 may include one, two, three, four or more cooling liquid type evaporators 31 .

[0059] refer to Figure 2 In some embodiments, the mine air conditioner also includes an air duct 4, the air inlet end of the air duct 4 is connected to the first cooling air evaporator 211 in the at least one cooling air evaporator 21, the air duct 4 is configured to be arranged in the excavation tunnel 200, and the air outlet end of the air duct 4 is configured to extend to the excavation working face 100.

[0060] The first cooling air evaporator 211 is connected to the air duct 4 and is used to deliver low-temperature air to the excavation working face 100 to cool and dehumidify the excavation working face 100.

[0061] Of course, the at least one cooling air evaporator 21 may further include a second cooling air evaporator, a third cooling air evaporator, and the like.

[0062] refer to Figure 2 In some embodiments, the mine air conditioner further includes an air cooler group 5, a first cooling liquid evaporator 311 in at least one cooling liquid evaporator 31 is connected to the air cooler group 5 through a pipeline, and the air cooler group 5 is configured to be arranged in the excavation tunnel 200.

[0063] The air cooler group 5 includes at least one air cooler. For example, the air cooler group 5 includes one, two, three, four or more air coolers, and the multiple air coolers are connected in parallel.

[0064] refer to Figure 2 In some embodiments, the mine air conditioner further includes an air duct 4 and an air cooler group 5. The air inlet end of the air duct 4 is connected to the first cooling air evaporator 211 of the at least one cooling air evaporator 21. The air duct 4 is configured to be located in the tunnel 200, and the air outlet end of the air duct 4 is configured to extend to the tunnel working face 100. The first cooling liquid evaporator 311 of the at least one cooling liquid evaporator 31 is connected to the air cooler group 5 via a pipeline. The air cooler group 5 is configured to be located in the tunnel 200.

[0065] The above embodiment delivers cold air to the excavation working face 100 through the air duct 4, and by arranging the air cooler group 5 in the excavation tunnel 200, the excavation tunnel 200 is cooled along the way, which can significantly improve the cooling effect of the excavation working face 100 and the excavation tunnel 200, and improve the environment of the excavation working face 100.

[0066] In some embodiments, the refrigeration unit 1 includes a first refrigeration host 11 , and a first air-cooling evaporator 211 and a first liquid-cooling evaporator 311 are connected in parallel to the first refrigeration host 11 .

[0067] Underground working faces are divided into tunneling faces and mining faces. The tunneling face is the working face during the excavation of a single tunnel. The mining face is formed by connecting two excavated tunnels to form a single working face, from which mining can be resumed. Based on cooling requirements, the tunneling face has a lower cooling demand, while the mining face has a higher cooling demand. Therefore, during the mining process, both types of units are generally required to meet underground cooling needs.

[0068] Based on this, in some embodiments of the present disclosure, a first air-cooled evaporator 211 and a first liquid-cooled evaporator 311 are connected in parallel to the first refrigeration unit 11, performing both air and water chiller functions. During excavation of a single underground tunnel, the air chiller is used to provide cooling via the first air-cooled evaporator 211. Once the two tunnels are connected to form a mining face, the air chiller is converted to a water chiller, using the first liquid-cooled evaporator 311 to provide cooling. Because the air and water chillers share a single refrigeration unit, underground cooling costs can be further reduced.

[0069] refer to Figure 2 In some embodiments, the refrigeration unit 1 includes a first refrigeration host 11 and a second refrigeration host 12 , the first air cooling evaporator 211 is connected to the first refrigeration host 11 , and the first liquid cooling evaporator 311 is connected to the second refrigeration host 12 .

[0070] In some embodiments, the mine air conditioner further includes an air cooler group 5 , a first cooling liquid evaporator 311 in at least one cooling liquid evaporator 31 is connected to the air cooler group 5 via a pipeline, and the air cooler group 5 is configured to be installed at the mining working face 300 .

[0071] The air cooler group 5 includes at least one air cooler, and the air cooler has components such as a heat exchanger.

[0072] refer to Figure 3 In some embodiments, the mine air conditioner further includes an air cooler group 5, wherein a first cooling liquid evaporator 311 and a second cooling liquid evaporator 312 in at least one cooling liquid evaporator 31 are respectively connected to the air cooler group 5 through pipelines, and the air cooler group 5 is configured to be installed at the mining working face 300.

[0073] When the cooling capacity required by the mining working face is large, cooling capacity can be provided to the mining working face 300 simultaneously by the first cooling liquid evaporator 311 and the second cooling liquid evaporator 312 to improve the cooling effect.

[0074] In some embodiments, the refrigeration unit 1 includes a first refrigeration host 11 , and a first cooling liquid evaporator 311 and a second cooling liquid evaporator 312 are connected in parallel to the first refrigeration host 11 .

[0075] During underground excavation, the cooling load increases as the working face transitions from tunneling to mining. Some existing technologies require a dedicated air chiller for the tunneling face and a dedicated water chiller for the mining face, significantly increasing underground cooling costs.

[0076] By using the mine air conditioner provided by the embodiment of the present disclosure, a first cooling air evaporator 211 is used to provide cooling at the excavation working face, and a first cooling liquid evaporator 311 is used to provide cooling at the mining working face. After the excavation working face is switched to the mining working face, the first cooling air evaporator 211 can also be replaced by the second cooling liquid evaporator 312, and cooling is provided to the mining working face through the first cooling liquid evaporator 311 and the second cooling liquid evaporator 312, thereby saving the cost of a set of refrigeration main units.

[0077] In some embodiments, the first refrigeration host 11 has components such as a semi-hermetic screw compressor and a plate condenser.

[0078] In some embodiments, the refrigeration unit 1 includes a first refrigeration host 11 and a second refrigeration host 12 , the first cooling liquid evaporator 311 is connected to the first refrigeration host 11 , and the second cooling liquid evaporator 312 is connected to the second refrigeration host 12 .

[0079] When the cooling demand of the mining working face increases, the first cooling host 11 and the second cooling host 12 can provide cooling to the first cooling liquid evaporator 311 and the second cooling liquid evaporator 312 respectively, thereby improving the heat exchange effect of the mining working face.

[0080] In some embodiments, the first refrigeration host 11 has components such as a semi-hermetic screw compressor and a plate condenser.

[0081] In some embodiments, the second refrigeration host 12 has components such as a semi-hermetic screw compressor and a plate condenser.

[0082] In some embodiments, the mine air conditioner further includes at least one air duct 4 , and the at least one air duct 4 is connected to the at least one cooling air evaporator 21 in a one-to-one correspondence.

[0083] In some embodiments, the mine air conditioner further includes at least one air cooler group 5 , and the at least one air cooler group 5 is connected to the at least one cooling liquid evaporator 31 in a one-to-one correspondence.

[0084] In some embodiments, the mine air conditioner further includes a cooling tower 6 connected to the refrigeration unit 1 .

[0085] The cooling tower 6 includes a closed cooling tower.

[0086] The refrigeration unit 1 is connected to a cooling tower 6 , which is used to provide cooling water for the plate condenser in the refrigeration unit 1 to remove the heat of the refrigerant.

[0087] In some embodiments, the mine air conditioner further includes a first valve 71 , a second valve 72 , a third valve 73 and a fourth valve 74 .

[0088] The output of refrigeration unit 1 is connected to cooling air evaporator 21 via a first pipeline, and cooling air evaporator 21 is connected to the input of refrigeration unit 1 via a second pipeline. A first valve 71 is provided in the first pipeline to control the on / off of the first pipeline. A second valve 72 is provided in the second pipeline to control the on / off of the second pipeline.

[0089] The output of refrigeration unit 1 is connected to cooling liquid evaporator 31 via a third pipeline, and cooling liquid evaporator 31 is connected to the input of refrigeration unit 1 via a fourth pipeline. A third valve 73 is provided on the third pipeline to control the on / off state of the third pipeline. A fourth valve 74 is provided on the fourth pipeline to control the on / off state of the fourth pipeline.

[0090] The mine air conditioner provided by the embodiment of the present disclosure can meet the cooling requirements of different working surfaces through simple pipeline switching.

[0091] refer to Figure 1 In some embodiments, when the unit produces cold air, the first valve 71 and the second valve 72 are opened, and the third valve 73 and the fourth valve 74 are closed. At this time, the refrigeration unit 1 is connected to the cooling air evaporator 21, and the refrigeration unit 1 is disconnected from the cooling liquid evaporator 31. The unit enters the cold air production mode. The cooling air evaporator 21 is connected to the air duct 4, and the low-temperature air after cooling and dehumidification is sent to the excavation working face 100 through the air duct 4, as shown in FIG. Figure 2 shown.

[0092] When the unit produces cold water, the third valve 73 and the fourth valve 74 are opened, and the first valve 71 and the second valve 72 are closed. At this time, the refrigeration unit 1 is connected to the cooling liquid evaporator 31, and the refrigeration unit 1 is disconnected from the cooling air evaporator 21. The unit enters the cold water production mode. The cooling liquid evaporator 31 is connected to the air cooler 7 through a chilled water pipe. The air cooler 7 exchanges heat with the air in the tunnel 200, cooling and dehumidifying the air in the tunnel 200. Figure 2 shown.

[0093] refer to Figure 2 The first refrigeration host 11 is connected to the first cooling air evaporator 211, and the first cooling air evaporator 211 is connected to the air duct 4 to supply low-temperature air to the excavation working face 100 to cool and dehumidify the excavation working face 100.

[0094] Simultaneously, a second refrigeration unit 12 is connected to the first liquid-cooling evaporator 311, which produces low-temperature chilled water. This chilled water flows through chilled water pipes into and out of the air cooler group 5, where it cools and dehumidifies the air along the roadway. The two refrigeration units are connected to a closed cooling tower 6 via cooling water pipes, located on the exhaust air side.

[0095] refer to Figure 3 When the two tunnels are connected, a mining face is formed. The mining face processes a large amount of fresh air and requires a high level of cooling capacity. Continuing to use refrigeration unit 1 and cooling air evaporator 21 is unable to meet the cooling requirements of the face. At this point, refrigeration unit 1 should be disconnected from cooling air evaporator 21 and connected to cooling liquid evaporator 31.

[0096] When the mining face has a high cooling demand, multiple refrigeration units and liquid cooling evaporators 31 are required to meet the cooling demand. The first liquid cooling evaporator 311 is connected to the first refrigeration unit 11, and the second liquid cooling evaporator 312 is connected to the second refrigeration unit 12. Both the first liquid cooling evaporator 311 and the second liquid cooling evaporator 312 are connected to the air cooler group 5 via pipelines. The air cooler group 5 is provided at the mining face 300. Of course, the configuration is not limited to two refrigeration units and two liquid cooling evaporators.

[0097] Some embodiments provide a method for controlling the mine air conditioner, which includes the following steps:

[0098] Selecting at least one of the at least one cooling air evaporator 21 to provide cooling for the excavation working face 100;

[0099] At least one of the at least one cooling liquid evaporator 31 is selected to provide cooling to the mining face 300 .

[0100] In some embodiments, the method for controlling mine air conditioning further includes the following steps: selecting at least one of the at least one cooling liquid evaporator 31 to provide cooling for the heading tunnel 200 .

[0101] The mine in the embodiment of the present disclosure may be a coal mine.

[0102] Based on the above-mentioned embodiments of the present disclosure, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments.

[0103] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A mine air conditioner, characterized in that: include: Refrigeration unit (1); a first evaporator group (2), comprising at least one cooling air type evaporator (21), the at least one cooling air type evaporator (21) being connected in parallel to the refrigeration unit (1); and A second evaporator group (3) comprising at least one cooling liquid type evaporator (31), wherein the at least one cooling liquid type evaporator (31) is connected in parallel to the refrigeration unit (1); At least one of the at least one cooling air evaporator (21), and / or at least one of the at least one cooling liquid evaporator (31) is in an operating state; An air duct (4), wherein an air inlet end of the air duct (4) is connected to a first cooling air evaporator (211) of the at least one cooling air evaporator (21), the air duct (4) is configured to be disposed in an excavation tunnel (200), and an air outlet end of the air duct (4) is configured to extend to an excavation working face (100); At least one air cooler group (5) includes a first air cooler group, a first cooling liquid evaporator (311) of the at least one cooling liquid evaporator (31) is connected to the first air cooler group via a pipeline, and the first air cooler group is configured to be located at a mining working face (300).

2. The mine air conditioner according to claim 1, characterized in that: The at least one air cooler group (5) further includes a second air cooler group, wherein a first cooling liquid evaporator (311) of the at least one cooling liquid evaporator (31) is connected to the second air cooler group via a pipeline, and the second air cooler group is configured to be arranged in the excavation tunnel (200).

3. The mine air conditioner according to claim 1, characterized in that: The refrigeration unit (1) comprises a first refrigeration main unit (11), and the first air-cooling evaporator (211) and the first liquid-cooling evaporator (311) are connected in parallel to the first refrigeration main unit (11).

4. The mine air conditioner according to claim 1, characterized in that: The refrigeration unit (1) comprises a first refrigeration main unit (11) and a second refrigeration main unit (12), the first air cooling evaporator (211) being connected to the first refrigeration main unit (11), and the first liquid cooling evaporator (311) being connected to the second refrigeration main unit (12).

5. The mine air conditioner according to claim 1, characterized in that: The second cooling liquid evaporator (312) in the at least one cooling liquid evaporator (31) is connected to the first air cooler group via a pipeline.

6. The mine air conditioner according to claim 5, characterized in that: The refrigeration unit (1) comprises a first refrigeration main unit (11), and the first cooling liquid type evaporator (311) and the second cooling liquid type evaporator (312) are connected in parallel to the first refrigeration main unit (11).

7. The mine air conditioner according to claim 5, characterized in that: The refrigeration unit (1) comprises a first refrigeration main unit (11) and a second refrigeration main unit (12), the first cooling liquid evaporator (311) being connected to the first refrigeration main unit (11), and the second cooling liquid evaporator (312) being connected to the second refrigeration main unit (12).

8. The mine air conditioner according to claim 1, characterized in that: The number of the air duct (4) is at least one, and the at least one air duct (4) is connected to the at least one cooling air evaporator (21) in a one-to-one correspondence; the at least one air cooler group (5) is connected to the at least one cooling liquid evaporator (31) in a one-to-one correspondence.

9. The mine air conditioner according to claim 1, characterized in that: It also includes a cooling tower (6) connected to the refrigeration unit (1).

10. A method for controlling a mine air conditioner according to any one of claims 1 to 9, comprising the following steps: Selecting at least one of the at least one cooling air evaporator (21) to provide cooling for the excavation working face (100); At least one of the at least one cooling liquid evaporator (31) is selected to provide cooling to the mining face (300).

11. The method for controlling a mine air conditioner according to claim 10, comprising the following steps: At least one of the at least one cooling liquid evaporator (31) is selected to provide cooling for the excavation tunnel (200).

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