Explosion-proof air conditioner for underground coal mine vehicle

Abstract

The utility model belongs to the technical field of engineering vehicles, and particularly relates to an anti-explosion air conditioner for an underground coal mine vehicle. The system comprises an evaporation mechanism, an anti-explosion compression mechanism, a heat dissipation module and a control module which are arranged on a vehicle in a distributed mode. The output end of the evaporation mechanism is connected with a gas inlet end pipeline of the anti-explosion compression mechanism, the output end of the anti-explosion compression mechanism is communicated with a gas inlet gas path of the heat dissipation module, and a liquid outlet of the heat dissipation module is communicated with a liquid path of the evaporation mechanism; the control module is in control connection with the evaporation mechanism, the anti-explosion compression mechanism and the heat dissipation module. The explosion-proof air conditioner is designed into four mutually independent small-size mechanisms, namely the evaporation mechanism, the explosion-proof compression mechanism, the heat dissipation module and the control module, according to functions, so that the installation positions of all the parts can be flexibly distributed and adaptively arranged according to the internal space of an explosion-proof vehicle, and the problems that in the prior art, an integrated explosion-proof air conditioner is poor in heat dissipation performance and the like are solved. And the installation requirements of underground vehicles cannot be met due to the large size.

Description

Technical Field

[0001] This utility model belongs to the field of engineering vehicle technology, specifically relating to an explosion-proof air conditioner for underground coal mine vehicles. Background Technology

[0002] Due to the harsh working environment of engineering vehicles, air conditioning has become standard equipment in the cabs of engineering vehicles to optimize driver comfort. Special vehicles operating underground in coal mines face high internal temperatures, making the installation of air conditioning systems particularly important. The working environment of special vehicles underground in coal mines is even harsher than that of road-based engineering vehicles, including the presence of dangerous flammable and explosive gases, high heat loads, and excessive dust and particulate matter. Compared to road-based vehicles, underground vehicles are more prone to explosions; therefore, underground equipment must meet Class I explosion-proof requirements.

[0003] Currently, air conditioning systems in road vehicles typically use integrated electric compressors. The refrigerant gas passes through the motor's internal cavity, posing an explosion-proof defect. Therefore, neither ordinary road vehicle air conditioners nor ordinary Class II explosion-proof air conditioners can meet the special explosion-proof requirements of underground equipment. Designing an explosion-proof integrated air conditioner would require redesigning the refrigerant inlet and outlet channels to meet explosion-proof requirements, making the entire unit three times larger, more expensive, and too bulky to meet the installation requirements of underground vehicles.

[0004] Therefore, there is an urgent need for an explosion-proof air conditioner that is safe, compliant, and easy to install in underground coal mine vehicles. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies, such as air conditioners for road vehicles not being explosion-proof and explosion-proof air conditioners being too bulky to meet the installation requirements of underground vehicles, and to provide an explosion-proof air conditioner for underground coal mine vehicles with explosion-proof function.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An explosion-proof air conditioner for underground coal mine vehicles includes an evaporation unit, an explosion-proof compression unit, a heat dissipation module, and a control module, all independently distributed on the vehicle.

[0008] The output end of the evaporation mechanism is connected to the air inlet pipe of the explosion-proof compression mechanism, the output end of the explosion-proof compression mechanism is connected to the air inlet of the heat dissipation module, and the liquid outlet of the heat dissipation module is connected to the liquid path of the evaporation mechanism.

[0009] The explosion-proof compression mechanism includes a compression housing, an explosion-proof motor installed inside the compression housing, and a compressor connected to the explosion-proof motor via a coupling; the control module is connected to the evaporation mechanism, the explosion-proof compression mechanism, and the heat dissipation module.

[0010] Furthermore, the evaporation mechanism includes an evaporation shell, an expansion valve installed inside the evaporation shell, an evaporator connected to the output end of the expansion valve via a pipeline, and an evaporation fan installed inside the evaporation shell for blowing out the cold air formed around the evaporator.

[0011] Furthermore, the heat dissipation module includes a heat dissipation housing, a heat sink installed inside the heat dissipation housing, and a heat dissipation fan installed inside the heat dissipation housing to promote heat dissipation of the heat sink.

[0012] Furthermore, the compression shell, evaporation shell, and heat dissipation shell are all made of explosion-proof materials.

[0013] Furthermore, the evaporator fan includes an evaporator motor and evaporator fan blades coaxially arranged with the output shaft of the evaporator motor; the cooling fan includes a cooling motor and cooling fan blades coaxially arranged with the output shaft of the cooling motor.

[0014] Both the evaporator motor and the heat dissipation motor are Class I explosion-proof motors.

[0015] Furthermore, the evaporation mechanism also includes an air inlet / outlet module; the air inlet / outlet module includes:

[0016] A return air vent, located on the evaporator housing, is used for the return of air from the vehicle's driver's compartment.

[0017] At least one air outlet is provided on the evaporator casing opposite the evaporator fan;

[0018] The filter screen is installed on the evaporator shell corresponding to the return air inlet and / or the air outlet, or at the end of the corresponding return air / air outlet duct.

[0019] Furthermore, the evaporation mechanism also includes pressure sensors and temperature sensors installed on the air inlet and outlet pipes of the evaporator.

[0020] Furthermore, the evaporator shell is provided with a first through hole and a second through hole; a first connecting seat is installed on the first through hole, and a second connecting seat is installed on the second through hole;

[0021] The inlet end of the expansion valve is connected to the output end of the heat dissipation mechanism via the first connecting seat;

[0022] The outlet of the evaporator is connected to the inlet pipe of the explosion-proof compression mechanism via the second connecting seat.

[0023] Furthermore, the control module includes an explosion-proof housing, a controller installed within the explosion-proof housing, and an intrinsically safe control panel installed on the instrument panel in the vehicle's driver's cab.

[0024] The beneficial effects of this utility model of an explosion-proof air conditioner for underground vehicles in coal mines are:

[0025] The explosion-proof air conditioner of this utility model is designed according to its function as four independent small-volume components: an evaporation mechanism, an explosion-proof compression mechanism, a heat dissipation module, and a control module. These multiple independent small-volume components are connected by pipes or lines, allowing the installation positions of each part, such as the evaporation mechanism, the explosion-proof compression mechanism, the heat dissipation module, and the control module, to be flexibly and adaptively distributed according to the internal space of the explosion-proof vehicle. This solves the problem that the existing integrated explosion-proof air conditioners are too large to meet the installation requirements of underground vehicles.

[0026] This invention's explosion-proof compression mechanism uses an explosion-proof motor to drive the compressor via a coupling. This ensures independent drive for the compressor while avoiding the explosion risk caused by condensate gas passing through the motor's internal cavity. Furthermore, since the explosion-proof compression mechanism uses an explosion-proof motor to drive the compressor, a general-purpose compressor can be used, eliminating the need to redesign the condensate inlet and outlet channels to meet explosion-proof requirements. This results in lower costs and a controllable size. Attached Figure Description

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Figure 1 This is a structural schematic diagram of an explosion-proof air conditioner according to an embodiment of the present invention.

[0029] Figure 2 This is a first-view perspective perspective view of the evaporation mechanism in an embodiment of this utility model.

[0030] Figure 3 This is a second-view perspective perspective view of the evaporation mechanism in an embodiment of this utility model.

[0031] Figure 4 This is a first-view perspective perspective view of the heat dissipation module in an embodiment of this utility model.

[0032] Figure 5 This is a second-view perspective perspective view of the heat dissipation module in an embodiment of this utility model.

[0033] Figure 6 This is a schematic diagram of the explosion-proof compression mechanism in an embodiment of this utility model.

[0034] Figure 7 This is a control diagram of the control panel in an embodiment of this utility model.

[0035] In the diagram: 1. Evaporation mechanism, 11. Evaporation shell, 12. Expansion valve, 13. Evaporator, 14. Evaporation fan, 15. Inlet and outlet air module, 151. Air outlet, 152. Return air outlet, 153. Filter screen, 16. First connecting seat, 17. Second connecting seat, 2. Explosion-proof compression mechanism, 21. Explosion-proof motor, 22. Coupling, 23. Compressor, 3. Heat dissipation module, 31. Radiator, 32. Heat dissipation fan, 4. Control module. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0037] like Figures 1-7 The present invention provides a specific embodiment of an explosion-proof air conditioner for underground coal mine vehicles, comprising an evaporator 1, an explosion-proof compressor 2, a heat dissipation module 3, and a control module 4, all independently mounted on the vehicle. The output end of the evaporator 1 is connected to the air inlet of the explosion-proof compressor 2, and the output end of the explosion-proof compressor 2 is connected to the air inlet of the heat dissipation module 3. The liquid outlet of the heat dissipation module 3 is connected to the evaporator 1 via a liquid tank. The control module 4 is connected to the evaporator 1, the explosion-proof compressor 2, and the heat dissipation module 3. The explosion-proof compressor 2 includes a compressor housing, a compressor motor 21 installed inside the compressor housing, and a compressor 23 connected to the compressor motor 21 via a coupling 22. The compressor motor 21 is a Class I explosion-proof motor to meet the Class I explosion-proof requirements for underground operation.

[0038] The explosion-proof air conditioner in this embodiment is designed as four independent small-volume components: an evaporator 1, an explosion-proof compressor 2, a heat dissipation module 3, and a control module 4. These multiple independent small-volume components are connected by pipes or lines, allowing the installation positions of the evaporator 1, the explosion-proof compressor 2, the heat dissipation module 3, and the control module 4 to be flexibly and adaptively arranged according to the internal space of the explosion-proof vehicle. This solves the problem that the large size of the existing integrated explosion-proof air conditioner cannot meet the installation requirements of underground vehicles.

[0039] To ensure the explosion-proof performance of the air conditioner, the explosion-proof compression mechanism 2 in this embodiment uses a compressor motor 21 to drive the compressor 23 via a coupling 22. This ensures independent drive for the compressor 23 while avoiding the risk of explosion caused by refrigerant gas passing through the motor's internal cavity. Furthermore, since the explosion-proof compression mechanism 2 uses a compressor motor 21 to drive the compressor 23 via a coupling 22, the compressor 23 can be a general-purpose compressor, eliminating the need to redesign the refrigerant inlet and outlet channels to meet explosion-proof requirements. This results in lower costs and controllable size.

[0040] like Figure 2 As shown, in this embodiment, the evaporation mechanism 1 includes an evaporation shell 11, an expansion valve 12 installed inside the evaporation shell 11, an evaporator 13 connected to the output pipe of the expansion valve 12, and an evaporation fan 14 installed inside the evaporation shell 11 for blowing out the cold air formed around the evaporator 13. Further, the evaporation mechanism 1 in this embodiment also includes a pressure sensor and a temperature sensor installed on the inlet and outlet pipes of the evaporator 13. The pressure sensor is used to detect the pressure value of the gas entering and exiting the evaporator, and the temperature sensor is used to monitor the temperature inside the vehicle's cab in real time.

[0041] In this embodiment, the evaporator 1 is installed in the vehicle's cab to cool the cab. Therefore, the evaporator 1 in this embodiment also includes an air inlet / outlet module 15, which includes an air outlet 151, a filter 153, and at least one return air inlet 152. The air outlet 151 is located on the evaporator housing 11 for returning air from the vehicle's cab. At least one return air inlet 152 is located on the evaporator housing opposite the evaporator fan 14. The filter 153 is installed on the evaporator housing corresponding to the air outlet 151 and / or the return air inlet 152, or at the end of the corresponding return / outlet duct. The filter 153 is used to prevent external dust and debris from entering the evaporator housing, thus protecting the evaporator 1. In one implementation, this embodiment has two air outlets. When in use, the evaporator fan 14 is activated, blowing the cold air formed around the evaporator 13 from the air outlet 151 into the vehicle's cab, thereby lowering the temperature inside the cab.

[0042] like Figure 3 As shown, in order to meet the pipeline connection between the evaporation mechanism 1 and the explosion-proof compression mechanism 2 and the heat dissipation module 3, a first through hole and a second through hole are provided on the evaporation shell 11. A first connecting seat 16 is installed on the first through hole, and a second connecting seat 17 is installed on the second through hole. In specific use, the liquid inlet end of the expansion valve 12 is connected to the output end pipeline of the heat dissipation mechanism through the first connecting seat 16, and the gas outlet end of the evaporator 13 is connected to the gas inlet pipeline of the explosion-proof compression mechanism 2 through the second connecting seat 17.

[0043] like Figure 4 and Figure 5As shown, the heat dissipation module 3 in this embodiment includes a heat dissipation shell, a radiator 31 installed inside the heat dissipation shell, and a heat dissipation fan 32 installed inside the heat dissipation shell to promote heat dissipation of the radiator 31. It should be further noted that the evaporator 13 and radiator 31 used in this embodiment adopt common structures in the prior art, and their specific structures will not be described in detail here. However, to meet the explosion-proof requirements of underground coal mining equipment, the aluminum components in the evaporator 13, radiator 31, evaporator fan 14, and heat dissipator fan 32 are designed with protective isolation to meet the explosion-proof and anti-fall requirements. It should be further noted that the evaporator fan 14 in this embodiment includes an evaporator motor and evaporator fan blades coaxially arranged with the output shaft of the evaporator motor. The heat dissipator fan 32 includes a heat dissipation motor and heat dissipation fan blades coaxially arranged with the output shaft of the heat dissipation motor. To ensure compliance with Class I explosion-proof requirements, both the evaporator motor and the heat dissipation motor in this embodiment are Class I explosion-proof motors.

[0044] When using non-metallic materials such as fan blades, fan housings, and pipe joints, flame-retardant and anti-static treatments are applied. The specific processes for these treatments will not be detailed here. It should be understood that those skilled in the art can apply flame-retardant and anti-static treatments to non-metallic materials such as fan blades, fan housings, and pipe joints using existing technology to meet explosion-proof requirements.

[0045] like Figure 7 As shown, the control module 4 in this embodiment includes an explosion-proof housing, a controller installed inside the explosion-proof housing, and an intrinsically safe control panel installed on the instrument panel in the vehicle's cab. To ensure that the independently distributed evaporator 1, explosion-proof compression mechanism 2, heat dissipation module 3, and control module 4 on the vehicle can meet the requirements for use in underground coal mines, the evaporator 1, explosion-proof compression mechanism 2, heat dissipation module 3, control module 4, and connecting pipelines all meet the ExibIMb explosion-proof type. Specifically, the compression housing, evaporator housing 11, heat dissipation housing, and the explosion-proof housing on the control module 4 are all designed for explosion-proof operation.

[0046] As one implementation method, mounting ears for vehicle installation are provided on the compression shell, evaporation shell 11, heat dissipation shell and explosion-proof shell. The specific location of the mounting ears will not be described in detail here.

[0047] like Figure 5As shown, in this embodiment, the compressor motor 21, evaporator fan 14, cooling fan 32, and controller are powered by the vehicle's explosion-proof power supply, and the intrinsically safe control panel is powered by the vehicle's intrinsically safe power supply. In this embodiment, the explosion-proof air conditioner adjusts its operating mode through the intrinsically safe control panel. Specifically, this is achieved by controlling the operating signal of the compressor motor 21 to drive the compressor 23. The intrinsically safe control panel adjusts the air conditioner temperature by controlling the speed of the compressor motor 21, and adjusts the air conditioner airflow by controlling the speed of the evaporator fan 14.

[0048] Before use, the independent components of the compressor motor 21 in this embodiment are connected as follows: the output port of the compressor 23 is connected to the input of the cooling mechanism via a pipeline; the output end of the cooling mechanism is connected to the input port of the expansion valve 12 via a pipeline through the first connecting seat 16; the output port of the expansion valve 12 is connected to the input port of the evaporator 13 via a pipeline; and the output port of the evaporator 13 is connected to the input port of the compressor 23 via a pipeline through the second connecting seat 17, thus forming a gas-liquid circuit with the compressor 23, the cooling mechanism, the expansion valve 12, and the evaporator 13. It should be understood that in this embodiment, the evaporator 1 of the explosion-proof air conditioner is installed inside the vehicle's cab, the cooling mechanism 3 is installed outside the vehicle's cab, the intrinsically safe control panel in the control module 4 is installed on the instrument panel in the cab, and other components are installed adaptively according to the vehicle's space, making the explosion-proof air conditioner of this embodiment suitable for vehicles with different cab spaces and thus having wide applicability.

[0049] The working principle of the explosion-proof air conditioner for underground coal mine vehicles in this embodiment is as follows: The compressor motor 21 is started, driving the compressor 23 to move. The compressor 23 draws in low-temperature, low-pressure refrigerant gas from the outlet of the evaporator 13, compresses the refrigerant gas into high-temperature, high-pressure superheated refrigerant gas, and discharges it from the compressor 23. The high-temperature, high-pressure superheated refrigerant gas enters the radiator 31. Due to the decrease in pressure and temperature, the refrigerant gas condenses into a liquid and is discharged as an atomized substance from the expansion device. The high-temperature, high-pressure refrigerant liquid increases in volume after passing through the expansion device, and its pressure and temperature drop sharply, discharging as a mist from the expansion device. The misty refrigerant liquid enters the evaporator 13. Because the boiling point of the refrigerant is much lower than the temperature inside the evaporator 13, the refrigerant liquid evaporates into a gas. During the evaporation process, it absorbs a large amount of heat from the surroundings. The evaporator fan 14 blows low-temperature air into the room, and then the low-temperature, low-pressure refrigerant vapor enters the compressor 23 again.

[0050] The explosion-proof air conditioner in this embodiment can be arranged in a split manner according to the spatial characteristics of the vehicle. That is, the air conditioning system is divided into multiple small-volume components, which can be conveniently and flexibly distributed according to the space of different vehicles and connected by pipelines, thus greatly improving the versatility of the air conditioner.

[0051] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. An explosion-proof air conditioner for underground vehicles in coal mines, characterized in that: It includes an evaporation mechanism (1), an explosion-proof compression mechanism (2), a heat dissipation module (3), and a control module (4) that are independently distributed on the vehicle; The output end of the evaporation mechanism (1) is connected to the air inlet pipe of the explosion-proof compression mechanism (2), the output end of the explosion-proof compression mechanism (2) is connected to the air inlet of the heat dissipation module (3), and the liquid outlet of the heat dissipation module (3) is connected to the liquid path of the evaporation mechanism (1); the control module (4) is connected to the evaporation mechanism (1), the explosion-proof compression mechanism (2), and the heat dissipation module (3) for control. The explosion-proof compression mechanism (2) includes a compression housing, a compression motor (21) installed inside the compression housing, and a compressor (23) connected to the compression motor (21) via a coupling (22); the compression motor (21) is a Class I explosion-proof motor.

2. The explosion-proof air conditioner for underground vehicles in coal mines according to claim 1, characterized in that: The evaporation mechanism (1) includes an evaporation shell (11), an expansion valve (12) installed inside the evaporation shell (11), an evaporator (13) connected to the output end of the expansion valve (12) by a pipeline, and an evaporation fan (14) installed inside the evaporation shell (11) to blow out the cold air formed around the evaporator (13).

3. The explosion-proof air conditioner for underground vehicles in coal mines according to claim 2, characterized in that: The heat dissipation module (3) includes a heat dissipation shell, a heat sink (31) installed in the heat dissipation shell, and a heat dissipation fan (32) installed in the heat dissipation shell to promote heat dissipation of the heat sink (31).

4. The explosion-proof air conditioner for underground vehicles in coal mines according to claim 3, characterized in that: The compression shell, evaporation shell (11) and heat dissipation shell are all made of explosion-proof materials.

5. The explosion-proof air conditioner for underground vehicles in coal mines according to claim 3, characterized in that: The evaporator fan (14) includes an evaporator motor and evaporator blades coaxially arranged with the output shaft of the evaporator motor; the heat dissipation fan (32) includes a heat dissipation motor and heat dissipation blades coaxially arranged with the output shaft of the heat dissipation motor. Both the evaporator motor and the heat dissipation motor are Class I explosion-proof motors.

6. The explosion-proof air conditioner for underground vehicles in coal mines according to claim 2, characterized in that, The evaporation mechanism (1) further includes an air inlet / outlet module (15); the air inlet / outlet module (15) includes: A return air vent (152) is provided on the evaporator shell (11) for returning air from the vehicle's driver's cab; At least one air outlet (151) is provided on the evaporator shell opposite the evaporator fan (14); A filter screen (153) is installed on the evaporator shell corresponding to the air outlet (151) and / or the return air outlet (152) or at the end of the corresponding return / outlet duct.

7. The explosion-proof air conditioner for underground vehicles in coal mines according to claim 2, characterized in that: The evaporation mechanism (1) also includes a pressure sensor and a temperature sensor installed on the air inlet and outlet pipes of the evaporator (13).

8. The explosion-proof air conditioner for underground vehicles in coal mines according to claim 7, characterized in that: The evaporator shell (11) is provided with a first through hole and a second through hole; a first connecting seat (16) is installed on the first through hole and a second connecting seat (17) is installed on the second through hole; The liquid inlet of the expansion valve (12) is connected to the output pipe of the heat dissipation mechanism through the first connecting seat (16); The outlet of the evaporator (13) is connected to the inlet pipe of the explosion-proof compression mechanism (2) via the second connecting seat (17).

9. The explosion-proof air conditioner for underground vehicles in coal mines according to claim 1, characterized in that: The control module (4) includes an explosion-proof housing, a controller installed inside the explosion-proof housing, and an intrinsically safe control panel installed on the instrument panel in the vehicle's cab.

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