Waste discharge device with noise reduction structure

Abstract

The utility model discloses a waste discharge device with a noise reduction structure. The waste discharge device comprises a fan used for generating negative pressure, an air duct used for being communicated with a waste gas port of a passenger room of the fan, and a grid installed at an air inlet of the air duct. The air valve is mounted on the air duct, and the mesh plate is mounted on the air valve and used for dredging waste gas. The waste discharge device is installed on a waste gas port of the passenger room and comprises a fan used for generating negative pressure, and waste gas in the passenger room is discharged out of the passenger room from the waste gas port of the passenger room through the grating, the air duct, the air valve, the mesh plate and the fan under the action of the negative pressure. And the waste gas is combed by the mesh plate, so that vortex can be reduced, and noise generated by waste gas emission is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust gas emission of rail transportation, and more specifically, to an exhaust gas emission device with a noise reduction structure. Background Art

[0002] Rail transit refers to various road transportation vehicles composed of trains, railways, stations and dispatching systems (including dispatching equipment and dispatching personnel), including all traditional railway systems and new rail systems.

[0003] In order to further provide passengers with a comfortable riding environment, the ventilation system can realize air circulation and temperature adjustment for rail transit vehicles. The ventilation system includes an exhaust device, which is mainly used to exhaust the exhaust gas in the passenger compartment. Because it is directly connected to the interior of the passenger compartment, the noise generated during operation directly affects the comfort of passengers. Optimizing the exhaust device and reducing the impact of the noise generated during its operation on the passenger compartment are the pain points that need to be solved in the current design process. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an exhaust device with a noise reduction structure, which reduces the impact of noise on the passenger compartment during exhaust gas emission and further improves the riding comfort of passengers.

[0005] The technical solution provided by the utility model is as follows:

[0006] A waste discharge device with a noise reduction structure,

[0007] Including fans for generating negative pressure,

[0008] Used for the air duct connecting the exhaust air outlet of the fan passenger compartment,

[0009] A grille installed at the air inlet of the air duct;

[0010] Air valves installed on the air duct, and

[0011] A mesh plate installed on the air valve to guide the exhaust gas.

[0012] The grille is a cross structure formed by grille plates that are perpendicular to each other.

[0013] Wherein, the grille plate is perpendicular to the exhaust gas outlet plane of the passenger compartment.

[0014] Wherein, the grille plate is a sound-absorbing perforated plate.

[0015] Wherein, sound-absorbing cotton is arranged between the grille plates.

[0016] Wherein, the mesh plate faces the air outlet surface of the air valve.

[0017] Wherein, a pressure wave protection valve is provided on the air duct between the grille and the air valve.

[0018] It also includes an outer shell, and the grille, pressure wave protection valve, wind valve, mesh plate and fan are all installed inside the outer shell.

[0019] Wherein, the shell is provided with an air inlet and an air outlet, the air inlet of the grille is installed on the air inlet of the shell, and the air outlet of the fan is installed on the air outlet of the shell.

[0020] Wherein, sound-absorbing cotton is also arranged between the grille and the outer shell.

[0021] Compared with the prior art, the exhaust device with a noise reduction structure provided by the utility model includes a fan for generating negative pressure, an air duct for connecting the exhaust port of the passenger compartment of the fan, a grille installed at the air inlet of the air duct; an air valve installed on the air duct, and a mesh plate installed on the air valve for guiding the exhaust gas. The exhaust device is installed on the exhaust port of the passenger compartment, and the exhaust device includes a fan for generating negative pressure. Under the action of negative pressure, the exhaust gas in the passenger compartment is discharged from the exhaust port of the passenger compartment, through the grille, the air duct, the air valve, the mesh plate, and then through the fan to the outside of the passenger compartment. When the exhaust gas is combed by the mesh plate, the vortex can be reduced, and the noise generated by the exhaust gas emission can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a structural front view of the grille 6;

[0025] Figure 3 is a three-dimensional schematic diagram of the grille 6;

[0026] Figure 4 It is a structural schematic diagram of the mesh plate 4;

[0027] In the figure, there is a housing 1 , a fan 2 , a wind valve 3 , a mesh plate 4 , a pressure wave protection valve 5 , a grille 6 , and a grille plate 61 . DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions in the utility model, the technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0032] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present utility model can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the present utility model without affecting the effects and purposes that can be achieved by the present utility model.

[0033] The embodiments of the present invention are written in a progressive manner.

[0034] like Figure 1 As shown, a waste discharge device with a noise reduction structure,

[0035] comprising a fan 2 for generating negative pressure,

[0036] Used for the air duct connecting the exhaust air outlet of the 2nd passenger compartment of the fan,

[0037] A grille 6 installed at the air inlet of the air duct;

[0038] The air valve 3 installed on the air duct, and

[0039] A mesh plate 4 installed on the air valve 3 for guiding the exhaust gas.

[0040] The exhaust device is installed on the exhaust port of the passenger compartment. The exhaust device includes a fan 2 for generating negative pressure. Under the action of negative pressure, the exhaust gas in the passenger compartment is discharged from the exhaust port of the passenger compartment, through the grille 6, the air duct, the air valve 3, the mesh plate 4, and then through the fan 2 to the outside of the passenger compartment. Figure 2 As shown, the exhaust gas can be combed by the mesh plate 4 to reduce eddy currents and reduce the noise generated by the airflow.

[0041] like Figure 2 and Figure 3 As shown, the grille 6 of the utility model is a cross structure formed by mutually perpendicular grille plates 61. The cross structure formed by the grille 6 actually forms one or more parallel small air ducts, which reduces the generation of airflow vortices, guides the airflow, and reduces the noise generated by the airflow.

[0042] The grille plate 61 of the utility model is perpendicular to the exhaust gas outlet plane of the passenger compartment, which can better guide the exhaust gas to the air duct, thereby reducing the noise generated by the airflow.

[0043] The grid plate 61 of the present invention is a sound-absorbing perforated plate, which may be a sound-absorbing perforated plate made of porous material. The holes on the grid plate 61 are arranged in an array.

[0044] The utility model provides sound-absorbing cotton between the grille plates 61, which helps to reduce the noise caused by the airflow.

[0045] The mesh plate 4 of the utility model faces the air outlet surface of the air valve 3, which helps to guide the airflow of the exhaust gas before entering the fan 2, reduce eddy currents, and reduce noise.

[0046] In the utility model, a pressure wave protection valve 5 is provided on the air duct between the grille 6 and the air valve 3, which is used to close the exhaust channel when a large pressure fluctuation inside and outside the vehicle is detected.

[0047] The utility model also includes a shell 1, and the grille 6, pressure wave protection valve 5, wind valve 3, mesh plate 4 and fan 2 are all installed inside the shell 1. The shell 1 is produced, transported and installed as a whole, which is convenient for assembly of rail trains.

[0048] The housing 1 of the utility model is provided with an air inlet and an air outlet, the air inlet of the grille 6 is mounted on the air inlet of the housing 1, and the air outlet of the fan 2 is mounted on the air outlet of the housing 1. Exhaust gas enters the air duct from the air inlet of the housing 1 through the grille 6, passes through the pressure wave protection valve 5, the air valve 3 and the mesh plate 4, and is then discharged to the outside of the passenger compartment by the fan 2, which can effectively reduce the noise of exhaust gas emission and further improve the riding comfort of passengers.

[0049] Furthermore, sound-absorbing cotton is also provided between the grille 6 and the outer shell 1 of the utility model, which can further reduce noise, reduce the noise of exhaust emissions, and provide a quiet and comfortable environment for passengers.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A waste discharge device with a noise reduction structure, characterized in that: comprising a fan (2) for generating negative pressure, Used for the air duct of the exhaust air outlet of the passenger compartment of the connecting fan (2), A grille (6) installed at the air inlet of the air duct; an air valve (3) mounted on the air duct, and A mesh plate (4) installed on the air valve (3) for guiding the exhaust gas.

2. The waste discharge device with noise reduction structure according to claim 1, characterized in that: The grille (6) is a cross structure formed by grille plates (61) that are perpendicular to each other.

3. The waste discharge device with noise reduction structure according to claim 2, characterized in that: The grille plate (61) is perpendicular to the exhaust gas outlet plane of the passenger compartment.

4. The waste discharge device with noise reduction structure according to claim 3, characterized in that: The grille plate (61) is a sound-absorbing perforated plate.

5. The waste discharge device with noise reduction structure according to claim 4, characterized in that: Sound-absorbing cotton is provided between the grille plates (61).

6. The waste discharge device with noise reduction structure according to claim 5, characterized in that: The mesh plate (4) faces the air outlet surface of the air valve (3).

7. The waste discharge device with noise reduction structure according to claim 6, characterized in that: A pressure wave protection valve (5) is provided on the air duct between the grille (6) and the air valve (3).

8. The waste discharge device with a noise reduction structure according to any one of claims 1 to 7, characterized in that: It also comprises an outer shell (1), wherein the grille (6), the pressure wave protection valve (5), the air valve (3), the mesh plate (4) and the fan (2) are all installed inside the outer shell (1).

9. The waste discharge device with noise reduction structure according to claim 8, characterized in that: The housing (1) is provided with an air inlet and an air outlet, the air inlet of the grille (6) is mounted on the air inlet of the housing (1), and the air outlet of the fan (2) is mounted on the air outlet of the housing (1).

10. The waste discharge device with noise reduction structure according to claim 9, characterized in that: Sound-absorbing cotton is also provided between the grille (6) and the outer shell (1).

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