Rail transit vehicle air conditioner

Abstract

The utility model provides a rail transit vehicle air conditioner. The rail transit vehicle air conditioner comprises a shell, an evaporation fan arranged in the shell, a water tank and a cleaning device used for cleaning fresh air filter screens, the fresh air filter screens are arranged on the two sides of the shell, the water tank is arranged in the shell and communicated with the evaporation fan through a first pipeline, and the cleaning device is used for cleaning the fresh air filter screens. The cleaning device is communicated with the water tank through a second pipeline, the water tank is further provided with a third pipeline used for being communicated with a rain eave of a vehicle body, the third pipeline is provided with an overflow valve, and the second pipeline is provided with a valve. The cleaning device is additionally arranged in the shell and communicated with the evaporation fan, and condensate water generated by the evaporation fan is fully utilized to clean the fresh air filter screen regularly.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to an air conditioner for a rail transportation vehicle. Background Art

[0002] The fresh air filters on rail transit vehicle air conditioners are made of stainless steel. As the air conditioners operate over time, dust accumulates on these filters, necessitating cleaning. The existing cleaning method involves disassembling the fresh air filters, but rail vehicles often have multiple air conditioners installed, making such disassembly a labor-intensive and time-consuming task.

[0003] Air conditioners generate a large amount of condensate during operation. The amount of condensate can be calculated using the following formula: Q = ƿ*v*Δd = ƿ*v*(d0-d1), where Q represents the condensate volume in kg / h; ƿ represents the air density in kg / m³, which is set to 1.2; V represents the condensing air volume in m³ / h; and d represents the humidity difference. For example, a 29kW air conditioner commonly used in subway vehicles can generate approximately 15kg of condensate per hour. A single air conditioner operating for 10 hours per day can generate approximately 150kg of condensate. Currently, condensate is discharged to the undercarriage through drain pipes or the vehicle's rain canopy, failing to fully utilize this water resource and resulting in waste. Utility Model Content

[0004] The utility model aims to provide an air conditioner for rail transit vehicles, which can fully utilize condensed water to clean the fresh air filter.

[0005] The technical solution of the utility model is: an air conditioner for a rail transit vehicle, comprising a shell, an evaporating fan arranged in the shell, a water tank and a cleaning device for cleaning a fresh air filter, fresh air filters are provided on both sides of the shell, the water tank is placed in the shell, the water tank is connected to the evaporating fan through a first pipe, the cleaning device is connected to the water tank through a second pipe, the water tank is further provided with a third pipe for communicating with a rain eave of a vehicle body, the third pipe is provided with an overflow valve, and the second pipe is provided with a valve.

[0006] In the above scheme, a cleaning device is added inside the shell, which is connected to the evaporating fan. The condensed water generated by the evaporating fan is fully utilized to regularly clean the fresh air filter. On the one hand, automatic cleaning can be achieved without disassembling the fresh air filter, saving a lot of manpower and material resources. On the other hand, the condensed water is fully utilized to avoid waste of resources.

[0007] Preferably, the cleaning device includes a first spray pipe and a plurality of second spray pipes arranged on the first spray pipe, the second spray pipe is provided with a nozzle at one end away from the first spray pipe, the nozzle is arranged toward the fresh air filter, and the first spray pipe is connected to the second pipe.

[0008] Preferably, a water pump is connected to the second pipeline.

[0009] Preferably, a liquid level gauge for sensing the amount of water stored is provided in the water tank, and the liquid level gauge is electrically connected to the overflow valve.

[0010] Compared with the related art, the beneficial effects of the present invention are:

[0011] First, the rail transit vehicle air conditioner is equipped with a cleaning device in the housing. The cleaning device is connected to the evaporating fan and fully utilizes the condensed water generated by the evaporating fan to regularly clean the fresh air filter. On the one hand, the fresh air filter can be automatically cleaned without disassembling it, saving a lot of manpower and material resources. On the other hand, the condensed water is fully utilized to avoid resource waste.

[0012] 2. Install a water pump on the second pipe to create a certain pressure for the cleaning water and ensure the cleanliness of the fresh air filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the internal structure of the rail transit vehicle air conditioner provided by the utility model;

[0014] Figure 2 for Figure 1 A is an enlarged schematic diagram.

[0015] In the accompanying drawings: 1. Shell; 2. Evaporating fan; 3. Compressor; 4. Condensing fan; 5. Fresh air filter; 6. Cleaning device; 61. First spray pipe; 62. Second spray pipe; 63. Nozzle; 7. First pipeline; 8. Second pipeline; 9. Third pipeline; 10. Water tank; 11. Water pump; 12. Overflow valve. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments and features of the embodiments of the present invention may be combined unless they conflict. For ease of description, the words "upper," "lower," "left," and "right" appear below merely to indicate the directions of upper, lower, left, and right in the accompanying drawings and do not limit the structure.

[0017] like Figure 1 、 Figure 2 As shown, this embodiment provides a rail transit vehicle air conditioner comprising a housing 1 and, disposed within the housing 1, an evaporating fan 2, a compressor 3, a condensing fan 4, a cleaning device 6, and a water tank 10. The evaporating fan 2, compressor 3, and condensing fan 4 form a refrigeration system. Fresh air filters 5 are provided on both sides of the housing 1, and the cleaning device 6 is disposed correspondingly to the fresh air filters 5.

[0018] The cleaning device 6 includes a first spray pipe 61 and a plurality of second spray pipes 62 arranged on the first spray pipe 61 . A nozzle 63 is provided at one end of the second spray pipe 62 away from the first spray pipe 61 . The nozzle 63 is disposed toward the fresh air filter 5 .

[0019] The water tank 10 is connected to the evaporating fan 2 via a first pipe 7. The first spray pipe 61 of the cleaning device 6 is connected to the water tank 10 via a second pipe 8. A valve and a water pump 11 are connected to the second pipe 8. The water tank 10 is also provided with a third pipe 9 for communication with the vehicle's rain canopy. This third pipe 9 is equipped with a relief valve 12. A liquid level gauge is installed within the water tank 10 to sense the water level. The liquid level gauge is electrically connected to the relief valve 12.

[0020] During air conditioning startup, condensed water generated by evaporating fan 2 flows from first pipe 7 into water tank 10 for storage. When water in water tank 10 is full, triggering a level gauge, overflow valve 12 opens, draining excess condensed water through third pipe 9 to the vehicle's rain screen. Furthermore, upper and lower water levels can be set in water tank 10, each detected by a sensor, to ensure that enough water remains in water tank 10 to clean the fresh air filter 5.

[0021] After the vehicle operation is completed every day, the valve is opened through the air-conditioning control system, and the water pump 11 is started, so that the water in the water tank 10 flows into the cleaning device 6 under the action of the water pump 11 and is sprayed from the nozzle 63 to the fresh air filter 5, thereby achieving the daily flushing of the fresh air filter 5.

[0022] In addition, as needed, only the water pump 11 can be provided on the second pipe 8 without a valve. The water tank 10 and the water pump 11 can also be placed on the vehicle body instead of being placed in the housing 1, and the directions of the first pipe 7 and the second pipe 8 can be arranged reasonably.

[0023] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rail transit vehicle air conditioner, comprising a housing, an evaporating fan disposed in the housing, and fresh air filters disposed on both sides of the housing, characterized in that: It also includes a water tank and a cleaning device for cleaning the fresh air filter. The water tank is placed in the shell. The water tank is connected to the evaporative fan through a first pipe. The cleaning device is connected to the water tank through a second pipe. The water tank is also provided with a third pipe for connecting to the vehicle body rain eaves. The third pipe is provided with an overflow valve, and the second pipe is provided with a valve.

2. The rail transit vehicle air conditioner according to claim 1, characterized in that: The cleaning device includes a first spray pipe and a plurality of second spray pipes arranged on the first spray pipe. The second spray pipe is provided with a nozzle at one end away from the first spray pipe. The nozzle is arranged toward the fresh air filter. The first spray pipe is connected to the second pipe.

3. The rail transit vehicle air conditioner according to claim 1, characterized in that: The second pipeline is connected to a water pump.

4. The rail transit vehicle air conditioner according to claim 1, characterized in that: A liquid level gauge for sensing the amount of water stored is provided in the water tank, and the liquid level gauge is electrically connected to the overflow valve.

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