CN201872760U - Wind and sand prevention ventilating system of motor train unit trailer air conditioner - Google Patents

Abstract

The utility model relates to an air-conditioning wind and sand prevention ventilation system for trailers of EMUs. The purpose is to provide an anti-wind and sand ventilation system which has a good anti-wind and sand effect and can well protect the environment in the passenger room. Technical solution: Including the gas collection box at one end of the air conditioner, the gas collection box is connected with the branch air ducts located on both sides of the air conditioner, and the branch air ducts are connected with the fresh air outlet set in the air conditioner through the soft air duct, which is used to filter wind, sand and water droplets The device is arranged on the outer wall of the air collection box; the filter device includes a front guide body that accelerates the incoming air, a middle swirl body located behind the front guide body and a rear air outlet body, wherein the middle swirl body and the rear air outlet The body is used to collect air and turn it into the hollow area behind the rear air outlet body. Behind the hollow area is a multi-layer stainless steel wire mesh. In the middle of the stainless steel mesh is a filter element for improving the dust holding capacity. Below the hollow area There is a sand discharge port. The utility model is mainly applied to the wind and sand prevention of the air conditioner of the EMU.

Description

Anti-wind and sand ventilation system for EMU trailer air conditioner

technical field

The utility model relates to an anti-wind and sand device, in particular to an anti-wind and sand ventilation system for an air conditioner of an EMU trailer.

technical background

Due to defects in the structure of the locomotive air conditioning and ventilation system in the prior art, the main problems in the wind and sand prevention effect in the environment with relatively large wind and sand are: (1) The structure of this ventilation system only has the filter installed at the fresh air outlet of the air conditioner. The wind and sand in the air are filtered by a net, which has a certain filtering effect on coarse dust, but it is not effective on fine dust; (2) The filter has only one layer, and the unfiltered dust can easily enter the main air outlet directly after entering the fresh air outlet. (3) The filter device is not equipped with a sand outlet, which is likely to be blocked to a certain extent due to excessive sand particles, which will cause the fresh air volume of the ventilation device to increase. The less it is, the negative pressure in the passenger room will gradually increase, causing passengers to have tinnitus.

Utility model content

The purpose of the utility model is to provide an anti-wind and sand ventilation system which has a good anti-wind and sand effect and can well protect the air quality environment in the passenger room.

In order to achieve the above purpose, the technical solution adopted by the utility model is: the EMU trailer air conditioner anti-wind and sand ventilation system includes an air collection box located at one end of the air conditioner, the air collection box is connected with the branch air ducts located on both sides of the air conditioner, and the branch air ducts pass through The soft air duct communicates with the fresh air outlet provided in the air conditioner, and the filter device for filtering wind sand and water droplets is arranged on the outer wall of the air collecting box.

The filter device includes a front guide body that accelerates the incoming air, a middle swirl body and a rear air outlet body positioned behind the front guide body, wherein the middle swirl body and the rear air outlet body are used to collect air and make it Turn to enter the hollow area behind the rear air outlet. Behind the hollow area is a multi-layer stainless steel wire mesh. There is a filter element in the middle of the stainless steel wire mesh to improve the dust holding capacity, and a sand discharge port is arranged below the hollow area.

Can find out from above-mentioned structural feature of the present utility model, its advantage is:

(1) The structure of the ventilation system is equipped with an additional air collecting box at the fresh air outlet, which is equivalent to the function of a static pressure box, which is conducive to maintaining a constant fresh air volume, thereby maintaining the stability of the air pressure in the passenger room, and avoiding negative pressure to a certain extent. produce;

(2) The area of the fresh air outlet of the ventilation system structure is slightly larger than that of the air conditioner, which slows down the wind speed at the fresh air outlet, and through the function of the gas collection box, the speed of the air conditioner's fresh air outlet is also reduced, thereby reducing the air conditioner to a certain extent. effect of noise;

(3) The structure of the ventilation system designs the bottom of the gas collection box at a certain inclination angle, and is equipped with a sand discharge port, so that most of the rainwater and sand can be automatically discharged outside the vehicle, reducing the number of manual cleaning.

Description of drawings

The utility model will be illustrated by comparing the accompanying drawings and in conjunction with examples:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of filter device of the present utility model;

Wherein, reference numeral 1 is an air conditioner, 2 is an air collection box, and 3 is a branch air duct

4 is the soft air duct 5 is the fresh air outlet 6 is the filter device 7 is the front guide body

8 is the middle swirl body 9 is the rear air outlet body 10 is the hollow area

11 is a stainless steel wire mesh, 12 is a filter element, and 13 is a sand discharge port.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further by embodiment.

preferred embodiment

As shown in Figure 1, the EMU trailer air conditioner anti-wind and sand ventilation system includes an air collection box 2 located at one end of the air conditioner 1. The air collection box 2 communicates with the branch air ducts 3 located on both sides of the air conditioner 1. The channel 4 communicates with the fresh air outlet 5 provided in the air conditioner 1 , and the filter device 6 for filtering sandstorms and water droplets is arranged on the outer wall of the gas collecting box 2 .

The filter device 6 includes a front deflector 7 that accelerates the incoming air, a middle swirl body 8 behind the front deflector 7 and a rear air outlet body 9, wherein the middle swirl body 8 and the rear air outlet body 9 It is used to collect air and turn it into the hollow area 10 behind the rear air outlet body 9. Behind the hollow area 10 is a multi-layer stainless steel wire mesh 11, and a filter element is arranged in the middle of the stainless steel wire mesh 11 to improve the dust holding capacity. 12. A sand outlet 13 is provided below the hollow area 10 .

The utility model adopts a gas collection box at the end and a fresh air outlet on the air conditioner. The gas collection box is connected with two air ducts, which are distributed on both sides of the air conditioner. In this ventilation system, after the air passes through the filter device, it first enters the air collecting box, then enters the fresh air outlet of the air conditioner through the branch air duct, and then is discharged into the main air duct by the fresh air fan, and then enters the passenger room.

The filter device in the utility model adopts a double-layer filter mode, and the first-stage filter adopts a cyclone filter structure as a coarse filter, and the second-stage filter adopts a fine filter formed by a multi-layer stainless steel wire mesh 11 plus a filter core 12. Among them, the cyclone filter structure is composed of a group of middle swirling bodies 8 arranged in a staggered manner with the front guide body 7 and the rear air outlet body 9 staggered. The front guide body 7, the middle swirl body 8 and the rear air outlet body 9 are designed to be streamlined, the natural air is accelerated by the front guide body 7, and the accelerated air is absorbed by the middle swirl body 8 and the rear air outlet body 9 Collected and turned, due to the influence of inertia, the sand and dust particles reach the hollow area 10, where an accumulation area is formed due to the reduction of the airflow velocity. The dust particles and raindrops here are separated and move slowly downward by gravity, the dust particles and raindrops are collected and then flow out of the car along the sand discharge hole 13 under the filter device 6; the secondary filter structure adopts multi-layer Stainless steel wire mesh 11, for improving dust-holding capacity, in the middle, set up a detachable filter element 12 made of non-woven cotton.

All features disclosed in this specification, except mutually exclusive features, can be combined in any way.

Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

Claims (2)

1. The anti-wind and sand ventilation system for the air conditioner of the EMU trailer, which is characterized in that it includes an air collection box (2) located at one end of the air conditioner (1), the air collection box (2) and the branch air ducts (3) located on both sides of the air conditioner (1) Connected, the branch air duct (3) communicates with the fresh air outlet (5) set in the air conditioner (1) through the soft air duct (4), and the filter device (6) for filtering sand and water droplets is installed in the air collection box (2) on the outer wall. 2. The anti-wind and sand ventilation system for EMU trailer air conditioning according to claim 1, characterized in that the filter device (6) includes a front guide body (7) that accelerates the incoming air, and is located at the front guide body (7). ) behind the middle swirl body (8) and the rear outlet body (9), where the middle swirl body (8) and the rear outlet body (9) are used to collect air and divert it into the rear outlet body (9) The hollow area (10) at the rear, behind the hollow area (10) is a multi-layer stainless steel wire mesh (11), and a filter element (12) for improving the dust holding capacity is arranged in the middle of the stainless steel wire mesh (11). A sand discharge port (13) is arranged below the area (10).

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