Air filter device with waste gas drainage function

Abstract

The utility model discloses an air filter device with waste gas drainage, which relates to the technical field of air filters and comprises an air filter, an air inlet of the air filter is connected with a primary air inlet pipe, an air outlet of the air filter is connected with an air inlet of an engine supercharger through a secondary air inlet pipe, and an air outlet of the engine supercharger is connected with an exhaust pipe. The primary gas inlet pipe is provided with a mechanical heating filter screen, and the mechanical heating filter screen is communicated with the exhaust pipe through a waste gas inlet drainage pipe and is used for introducing high-temperature waste gas; the waste gas after heat exchange is discharged through the waste gas degassing drainage pipe; the mechanical heating filter screen comprises at least two rows of cross-shaped star-shaped column tubes which are arranged in a staggered mode, a hollow tube used for conveying waste gas is arranged in the center of each cross-shaped star-shaped column tube, and the outer wall of each cross-shaped star-shaped column tube is a concave arc-shaped heat exchange face. According to the utility model, waste gas of the engine is directly utilized for heat dissipation, and through a mechanical filtering structure, air inlet snow melting and water removal are realized during operation under a snowstorm condition, and the risk that an air filter of the engine is blocked by the snowstorm is avoided.

Description

Technical Field

[0001] This utility model relates to the field of air filter technology, specifically an air filter device with exhaust gas diversion. Background Technology

[0002] With frequent natural disasters such as blizzards, equipment operating in harsh conditions is prone to having its engine air filter clogged by snow, causing the engine to malfunction.

[0003] Currently, there are two traditional solutions. One is to install a heating device or auxiliary heating equipment inside the air filter for snow melting and de-icing. However, this method uses multiple media for heat exchange, resulting in low overall heat exchange efficiency. Furthermore, snowmelt enters the air filter, and continuous operation during blizzards can lead to filter contamination and moisture buildup, causing the air filter to malfunction. The other solution is to direct the air filter intake to a location inside the vehicle where snow and wind are less likely to enter. However, this method is often limited by vehicle structure, preventing the intake from being placed in the ideal location to achieve the desired effect. Therefore, preventing air filters from becoming clogged by snow and wind in the face of severe natural disasters such as blizzards is a problem that urgently needs to be solved. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an air filter device with exhaust gas diversion, which has a heating and snow melting function to ensure the engine's air intake needs. It is suitable for railway infrastructure maintenance equipment, diesel shunting locomotives, and other railway mobile equipment, and can overcome the challenges of working in blizzard weather and prevent snow from clogging the air filter.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an air filter device with exhaust gas diversion, comprising an air filter, wherein the air inlet of the air filter is connected to a primary air inlet pipe, and the air outlet of the air filter is connected to the air inlet of an engine turbocharger through a secondary air inlet pipe, the air outlet of the engine turbocharger being connected to an exhaust pipe, the primary air inlet pipe being provided with a mechanically heated filter screen, the mechanically heated filter screen being connected to the exhaust pipe through an exhaust gas diversion pipe for introducing high-temperature exhaust gas; and the exhaust gas after heat exchange being discharged through an exhaust gas degassing diversion pipe; the mechanically heated filter screen comprising at least two rows of staggered cross-shaped column tubes, the center of the cross-shaped column tubes being a hollow tube for conveying exhaust gas, and the outer wall of the cross-shaped column tubes being a concave arc-shaped heat exchange surface.

[0006] Based on the above technical solution, a spindle-shaped cavity for airflow is formed between the two cross-shaped column tubes that are staggered between each two adjacent rows.

[0007] Based on the above technical solution, the outer side of the air inlet end of the first-stage air inlet pipe is covered with a housing, the housing is provided with an air inlet for introducing air, and the mechanical heating filter is located inside the housing and opposite to the air inlet.

[0008] Based on the above technical solution, a rainproof cap is provided on the top of the housing, and an air inlet is provided on the bottom of the housing.

[0009] Based on the above technical solution, a temperature sensor is installed inside the housing.

[0010] Based on the above technical solution, an exhaust gas shut-off valve is provided at the connection between the exhaust pipe and the exhaust gas inlet pipe.

[0011] Based on the above technical solution, a control box is also included, which is electrically connected to the temperature sensor and the exhaust gas shut-off valve.

[0012] Based on the above technical solution, a muffler connected to the exhaust pipe is also included.

[0013] Based on the above technical solution, the cross-shaped column is made of aluminum or copper, and the inner diameter of the hollow tube is Φ10mm~16mm.

[0014] The beneficial effects of this utility model are as follows:

[0015] The utility model directly utilizes engine exhaust gas for heat dissipation. Through a mechanical filtration structure, it reduces the risk of snow melting and water removal during operation in blizzard conditions, thus avoiding the risk of snow clogging the engine air filter.

[0016] This utility model of an air filter device with exhaust gas diversion adopts an air-to-air heat exchange mode, which reduces the need for additional heating systems, improves snow melting and water removal efficiency, and enhances the availability and economy of the power system. Through simulation verification, it improves the continuous operation capability of the whole machine and increases the economy by more than 60%. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the air filter device with exhaust gas diversion in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the mechanically heated filter screen in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram illustrating the working principle of the mechanically heated filter screen in this embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the cross-shaped column tube in an embodiment of this utility model.

[0021] Figure label:

[0022] 1. Air filter; 2. Secondary intake pipe; 3. Engine turbocharger; 4. Exhaust pipe; 5. Muffler; 6. Exhaust gas shut-off valve; 7. Exhaust gas intake drain pipe; 8. Mechanically heated filter screen; 9. Rain cap; 10. Housing; 11. Primary intake pipe; 12. Exhaust gas degassing drain pipe; 13. Temperature sensor; 14. Control box; 15. Cross-shaped column tube; 16. Hollow tube; 17. Arc-shaped heat exchange surface; 18. Shuttle-shaped cavity. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0024] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0025] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0026] See Figures 1-2 As shown, this utility model embodiment provides an air filter device with exhaust gas diversion, including an air filter 1. The air inlet of the air filter 1 is connected to a primary intake pipe 11, and the air outlet of the air filter 1 is connected to the air inlet of an engine turbocharger 3 through a secondary intake pipe 2. The air outlet of the engine turbocharger 3 is connected to an exhaust pipe 4. The primary intake pipe 11 is provided with a mechanically heated filter 8, which is connected to the exhaust pipe 4 through an exhaust gas intake diversion pipe 7 for introducing high-temperature exhaust gas; and the heat-exchanged exhaust gas is discharged through an exhaust gas degassing diversion pipe 12. Specifically, the air filter device with exhaust gas diversion also includes a muffler 5 connected to the exhaust pipe 4.

[0027] See Figures 3-4As shown, the mechanically heated filter 8 includes two rows of staggered cross-shaped column tubes 15. The center of each cross-shaped column tube 15 is a hollow tube 16 for conveying exhaust gas, and the outer wall of each cross-shaped column tube 15 is a concave arc-shaped heat exchange surface 17. Specifically, the cross-shaped columns are made of aluminum or copper, and the inner diameter of the hollow tube 16 is Φ10mm~16mm.

[0028] Between two adjacent rows of staggered, cross-shaped column tubes 15, a spindle-shaped cavity 18 is formed to allow airflow. The two ends of the spindle-shaped cavity are air inlets, and the cavity walls are arc-shaped to increase the contact area with air and block snow water. A housing 10 is provided on the outer side of the air inlet end of the primary air inlet pipe 11. The housing 10 has an air inlet for introducing air, and a mechanically heated filter 8 is located inside the housing 10 and opposite the air inlet. A rain cap 9 is provided on the top of the housing 10, and an air inlet is provided at the bottom of the housing 10.

[0029] See Figure 1 As shown, a temperature sensor 13 is installed inside the housing 10. An exhaust gas shut-off valve 6 is installed at the connection between the exhaust pipe 4 and the exhaust gas inlet pipe 7. The air filter device with exhaust gas inlet also includes a control box 14, which is electrically connected to the temperature sensor 13 and the exhaust gas shut-off valve 6. In this embodiment, the housing integrates a temperature sensor, which transmits the sensing signal to the control box. When the air temperature reaches 25°C or higher, the control box controls the exhaust gas flow rate through the exhaust gas shut-off valve. The temperature sensor, control box, and exhaust gas shut-off valve are connected by wires.

[0030] This invention utilizes an exhaust gas inlet pipe to guide airflow, employs a mechanically heated filter to output heat and heat the air, and then discharges the exhaust gas through an exhaust gas venting pipe. A temperature sensor detects the air temperature, and a control box performs logical judgments, using an exhaust gas shut-off valve to control the exhaust gas flow rate. This reduces the risk of snow and water clogging the engine air filter during operation in blizzard conditions.

[0031] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] This utility model is not limited to the above-described embodiments. For those skilled in the art, various improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model. Contents not described in detail in this specification are prior art known to those skilled in the art.

Claims

1. An air filter device with exhaust gas diversion, comprising an air filter (1), wherein the air inlet of the air filter (1) is connected to a primary air intake pipe (11), the air outlet of the air filter (1) is connected to the air inlet of an engine turbocharger (3) via a secondary air intake pipe (2), and the air outlet of the engine turbocharger (3) is connected to an exhaust pipe (4), characterized in that: The first-stage air intake pipe (11) is equipped with a mechanical heating filter (8), which is connected to the exhaust pipe (4) through the exhaust gas intake pipe (7) to introduce high-temperature exhaust gas; and the exhaust gas after heat exchange is discharged through the exhaust gas degassing pipe (12). The mechanically heated filter (8) includes at least two rows of staggered cross-shaped column tubes (15), the center of which is a hollow tube (16) for conveying exhaust gas, and the outer wall of the cross-shaped column tube (15) is a concave arc-shaped heat exchange surface (17).

2. The air filter device with exhaust gas diversion as described in claim 1, characterized in that: Between each pair of staggered cross-shaped column tubes (15) in each adjacent row, a shuttle-shaped cavity (18) is formed for airflow.

3. The air filter device with exhaust gas diversion as described in claim 1, characterized in that: The air inlet end of the first-stage air inlet pipe (11) is covered with a housing (10), and the housing (10) is provided with an air inlet for introducing air. The mechanical heating filter (8) is located inside the housing (10) and is opposite to the air inlet.

4. The air filter device with exhaust gas diversion as described in claim 3, characterized in that: The top of the housing (10) is provided with a rain cap (9), and the bottom of the housing (10) is provided with an air inlet.

5. The air filter device with exhaust gas diversion as described in claim 3, characterized in that: A temperature sensor (13) is installed inside the housing (10).

6. The air filter device with exhaust gas diversion as described in claim 5, characterized in that: An exhaust gas shut-off valve (6) is provided at the connection between the exhaust pipe (4) and the exhaust gas inlet pipe (7).

7. The air filter device with exhaust gas diversion as described in claim 6, characterized in that: It also includes a control box (14), which is electrically connected to a temperature sensor (13) and an exhaust gas shut-off valve (6).

8. The air filter device with exhaust gas diversion as described in claim 1, characterized in that: It also includes a muffler (5) connected to the exhaust pipe (4).

9. The air filter device with exhaust gas diversion as described in claim 1, characterized in that: The cross-shaped column is made of aluminum or copper, and the hollow tube (16) has an inner diameter of Φ10mm~16mm.

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