An explosion-proof v-type piston open-type compressor unit of an integrated air conditioner in a coal mine underground
By adopting explosion-proof motors, mesh cooling fan covers, and stainless steel intake and exhaust valves in the air conditioning system of coal mines, the problems of insufficient explosion-proof performance and unreasonable structure of traditional compressor units in flammable and explosive environments have been solved, achieving efficient and safe compressor operation and convenient maintenance.
Patent Information
- Application Number
- CN202521859738.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-29
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-29
AI Technical Summary
Traditional compressor units have insufficient explosion-proof performance in the flammable and explosive environment of underground coal mines, and their unreasonable structural design leads to unstable operation, affecting the cooling effect and safety.
It features an explosion-proof motor, a mesh cooling fan cover, an anti-static rubber layer, and stainless steel intake and exhaust valves. Combined with a V-type piston open compressor and coaxial centering installation, it enhances explosion-proof performance and stability, and supports both vertical and horizontal motors to adapt to different spatial layouts.
It improves the explosion-proof safety and operational stability of underground air conditioning systems in coal mines, reduces the risk of explosion, enhances cooling efficiency and equipment lifespan, and facilitates installation and maintenance.
Smart Images

Figure CN224679650U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of underground refrigeration equipment in coal mines, and more specifically, to an explosion-proof V-type piston open compressor unit for an integrated underground air conditioner in coal mines. Background Technology
[0002] In the underground coal mine environment, the presence of flammable and explosive gases such as methane necessitates extremely high explosion-proof performance requirements for equipment. Furthermore, the limited space and complex environment underground necessitate equipment with excellent adaptability and stability. As a crucial piece of equipment for improving the underground working environment, the performance of the compressor unit in an integrated mobile air conditioner for coal mines directly impacts the cooling effect and operational safety of the air conditioner.
[0003] Traditional compressor units have many shortcomings when used in underground coal mines. First, their explosion-proof performance is insufficient to meet the stringent requirements of underground operations. Some compressor units are not specifically designed for the flammable and explosive gas environment underground. The electrical sparks and high temperatures that may be generated during operation can easily trigger serious accidents such as gas explosions, posing a significant threat to the lives of underground workers and coal mine production.
[0004] Secondly, the structural design of traditional compressor units is not reasonable enough. Within the limited underground space, their installation and maintenance are difficult, and their stability is poor. They are prone to malfunction due to environmental factors such as vibration and humidity underground, leading to reduced air conditioning cooling efficiency or even complete failure, thus affecting the comfort of the underground working environment and production efficiency. Utility Model Content
[0005] Based on the aforementioned technical problems, this utility model proposes an explosion-proof V-type piston open compressor unit for an integrated air conditioner in coal mines.
[0006] An explosion-proof V-type piston open compressor unit for an integrated air conditioner in underground coal mines includes: The V-type piston open compressor is fixedly installed on the base by compressor fixing bolts. The compressor has multiple sets of inlet and outlet ports, and inlet and outlet valves are provided at the inlet and outlet ports. The explosion-proof motor is fixedly mounted on the base by motor fixing bolts, and the explosion-proof motor is equipped with an explosion-proof junction box. A flexible pin coupling connects the output shaft of an explosion-proof motor to the compressor shaft to achieve power transmission; The explosion-proof motor is located on one side of the compressor, and the two are coaxially aligned.
[0007] Furthermore, the base is provided with an array of mounting holes corresponding to the base bolt holes of the compressor and the explosion-proof motor.
[0008] Furthermore, the rear end of the explosion-proof motor is provided with a cooling fan cover, which adopts a mesh explosion-proof structure.
[0009] Furthermore, the pin surface of the elastic pin coupling is covered with an antistatic rubber layer, and the exposed part of the elastic pin coupling is provided with a removable protective cover.
[0010] Furthermore, the intake and exhaust valves are reed valves with valve plates made of stainless steel.
[0011] Beneficial effects: 1. High explosion-proof safety: The explosion-proof junction box of the explosion-proof motor, the mesh explosion-proof structure of the cooling fan cover, and the antistatic rubber layer of the pin of the elastic pin coupling are designed to comprehensively ensure the safe operation of the compressor unit in the flammable and explosive environment of the coal mine, effectively reduce the risk of explosion, and ensure the safety of personnel and equipment. 2. Stable and efficient operation: The V-type piston open compressor and reed valve design, combined with the coaxial alignment of the explosion-proof motor and compressor, ensures the stability and efficiency of the compressor unit operation, providing reliable compression power for integrated mobile air conditioners in coal mines and improving the air conditioning cooling effect. 3. Good adaptability and convenient maintenance: The explosion-proof motor, which can be used in both vertical and horizontal applications, can adapt to different underground space layouts, making it easy to install and maintain. The detachable coupling protective cover facilitates the inspection and maintenance of the coupling, while the stainless steel inlet and outlet valve plates are durable and corrosion-resistant, reducing maintenance costs and downtime caused by component damage, and improving the overall service life and operating efficiency of the equipment. Attached Figure Description
[0012] Figure 1 A schematic diagram of the structure of this utility model is shown; Figure 2 A schematic diagram of the compressor of this utility model is shown; In the attached diagram, 1 is the compressor, 2 is the explosion-proof motor, 3 is the base, 4 is the flexible pin coupling, 5 is the explosion-proof junction box, 6 is the fan cover, 7 is the motor fixing bolt, 8 is the compressor fixing bolt, 9 is the inlet and outlet ports, and 10 is the inlet and outlet valve. Detailed Implementation
[0013] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0014] like Figures 1-2The invention shown is an explosion-proof V-type piston open compressor unit for an integrated air conditioner in a coal mine. This compressor unit mainly consists of a V-type piston open compressor 1, an explosion-proof motor 2, a flexible pin coupling 4, and a base 3.
[0015] The V-type piston open compressor 1 is the core component of the compressor group 1, and is securely mounted on the base 3 by the compressor fixing bolts 8. Its unique V-shaped structure design enables the compressor 1 to effectively balance the reciprocating motion of the piston during operation, reducing vibration and noise, and improving compression efficiency. The compressor 1 is equipped with multiple sets of inlet and outlet ports 9, and inlet and outlet valves 10 are installed at the inlet and outlet ports 9. The inlet and outlet valves 10 adopt a reed valve structure, and the valve plates are made of stainless steel. Stainless steel has good corrosion resistance and high strength, and can work stably for a long time in the humid and harsh environment of the well, ensuring the normal opening and closing of the inlet and outlet valves 10, accurately controlling the inflow and outflow of refrigerant, and ensuring that the compression process of the compressor 1 is efficient and stable.
[0016] The explosion-proof motor 2 is securely mounted on the base 3 via motor fixing bolts 7, providing power support to the compressor 1. The explosion-proof motor 2 is located on one side of the compressor 1, and the two are coaxially aligned. This layout ensures efficient and stable power transmission and reduces energy loss. An explosion-proof junction box 5 is installed on the explosion-proof motor 2 for connecting the power line. Its explosion-proof design effectively prevents external flammable and explosive gases from entering the motor, avoiding explosion accidents caused by electrical sparks due to electrical faults. A cooling fan cover 6 is located at the rear end of the explosion-proof motor 2. The fan cover 6 adopts a mesh explosion-proof structure, which can effectively protect the cooling fan, ensure good ventilation and heat dissipation, and prevent external objects from entering the motor. This ensures that the heat generated by the motor during operation can be dissipated in a timely manner, maintaining the normal operating temperature of the motor and extending its service life.
[0017] The flexible pin coupling 4 connects the output shaft of the explosion-proof motor 2 to the rotating shaft of the compressor 1, achieving smooth power transmission. The pin surface of the flexible pin coupling 4 is covered with an antistatic rubber layer, which can effectively prevent static electricity generated by friction during high-speed operation and eliminate potential safety hazards. The exposed part of the flexible pin coupling 4 is equipped with a removable protective cover, which can protect the safety of operators and prevent them from accidentally coming into contact with the high-speed rotating coupling components and getting injured. On the other hand, it can prevent downhole debris from entering the coupling and affecting its normal operation, ensuring the reliability of power transmission.
[0018] The base 3 is provided with an array of mounting holes corresponding to the base bolt holes of the compressor 1 and the explosion-proof motor 2. The explosion-proof motor 2 is a dual-purpose vertical and horizontal motor. This design allows the explosion-proof motor 2 to be installed vertically according to the actual underground space conditions, saving space, or installed horizontally, improving stability. This greatly enhances the adaptability of the compressor 1 set in different underground environments and facilitates installation and maintenance.
[0019] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An explosion-proof V-type piston open compressor unit for an integrated air conditioner in underground coal mines, characterized in that, include: V-type piston open compressor (1) is fixedly installed on base (3) by compressor fixing bolt (8). The compressor (1) is provided with multiple sets of inlet and outlet ports (9), and inlet and outlet valves (10) are provided at the inlet and outlet ports (9). An explosion-proof motor (2) is fixedly installed on a base (3) by motor fixing bolts (7), and an explosion-proof junction box (5) is provided on the explosion-proof motor (2); The flexible pin coupling (4) connects the output shaft of the explosion-proof motor (2) and the rotating shaft of the compressor (1) to realize power transmission; The explosion-proof motor (2) is located on one side of the compressor (1), and the two are coaxially aligned.
2. The explosion-proof V-type piston open compressor unit of the integrated air conditioner for underground coal mines according to claim 1, characterized in that, The base (3) is provided with an array of mounting holes corresponding to the base bolt holes of the compressor (1) and the explosion-proof motor (2).
3. The explosion-proof V-type piston open compressor unit for integrated underground air conditioning in coal mines according to claim 1, characterized in that, The explosion-proof motor (2) is provided with a cooling fan cover (6) at the rear end, and the fan cover (6) adopts a mesh explosion-proof structure.
4. The explosion-proof V-type piston open compressor unit for integrated underground air conditioning in coal mines according to claim 1, characterized in that, The surface of the pin of the elastic pin coupling (4) is covered with an antistatic rubber layer, and the exposed part of the elastic pin coupling (4) is provided with a removable protective cover.
5. The explosion-proof V-type piston open compressor unit for integrated air conditioning in coal mines according to claim 1, characterized in that, The intake and exhaust valve (10) is a reed valve structure, and the valve plate is made of stainless steel.