Sensor shell of soot prevention structure

Abstract

The utility model relates to the technical field of air inlet pressure and temperature sensors, in particular to a sensor shell of a soot prevention structure. The sensor shell of the soot prevention structure comprises a sensor body, a connecting pipe, a slide way and a check block, the bottom of the sensor body is connected with the connecting pipe, an air inlet is formed in the top of the connecting pipe, a second channel is formed in the sensor body, and a first channel is formed in the position, located on the left side of the second channel, in the sensor body. The first channel and the second channel are communicated and staggered, the air inlet is communicated with the second channel, and a slide way is connected to the communication position of the lower end of the first channel and the second channel. Due to the fact that the slideways and the check blocks which are arranged in the staggered mode are additionally arranged in the connecting pipe, most of soot particles can be effectively blocked step by step, after the air pressure is stable, most of the blocked soot particles can return into the air inlet manifold, and therefore the soot content in the working air cavity is obviously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of intake pressure and temperature sensors, in particular to a sensor housing with a carbon smoke proof structure. Background Art

[0002] The intake air pressure and temperature sensor's primary function is to monitor the pressure and temperature of the gas entering the intake manifold and transmit this data to the engine's ECU. However, because the oil-gas separator cannot completely separate all oil vapor, oil vapor from the crankcase can be introduced into the intake manifold through the exhaust pipe. Over extended operation, this mixture of oil, unburned gasoline, dust, and other debris can form carbon deposits in the intake manifold.

[0003] Existing intake pressure and temperature sensor housings lack a guideway at the vent hole. This allows soot and other impurities to enter the working air chamber of the pressure chip directly with the working airflow during operation. As the engine runs for extended periods, this soot and other impurities cannot escape from the working air chamber and accumulate, eventually adhering to the protective gel surrounding the pressure-sensing hole of the pressure chip. Over time, the carbon particles and impurities on the gel gradually accumulate, eventually blocking the intake hole and preventing the pressure chip from accurately sensing the air pressure in the intake manifold. This can cause abnormal engine system operation, triggering ECU alarms and impacting normal vehicle operation. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the technical problem to be solved is: to provide a sensor housing with an anti-carbon smoke structure.

[0005] The technical solution of the utility model is: a sensor housing with an anti-carbon smoke structure, including a sensor body, a connecting pipe, a slide and a block, the bottom of the sensor body is connected to the connecting pipe, the top of the connecting pipe is provided with an air inlet, a second channel is provided in the sensor body, a first channel is provided at a position on the left side of the second channel in the sensor body, the first channel and the second channel are interconnected, the positions of the two are staggered, the air inlet and the second channel are interconnected, the lower end of the first channel is connected to the connecting point with the second channel with the slide, the top of the second channel is connected to the block, the lower end of the connecting pipe is symmetrically provided with vents, and the bottom of the connecting pipe is provided with a connecting port.

[0006] Furthermore, the slideway and the stopper are both arranged obliquely.

[0007] Furthermore, the oblique angle of the slideway and the stopper is 30° to 60°.

[0008] Furthermore, the stopper is located at the junction of the first channel and the second channel, and the slideway is located on the left side of the stopper, and the two are staggered.

[0009] Furthermore, the sensor housing body is integrally injection molded.

[0010] By adding staggered slideways and blocks within the connecting pipe, most soot particles are effectively blocked step by step. Once the air pressure stabilizes, most of these blocked soot particles return to the intake manifold, significantly reducing the soot content in the working air chamber. This design not only reduces the impact of soot on the chip, improving the product's measurement accuracy and reliability, but also significantly extends the product's service life by reducing soot accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0012] Figure 2 This is a schematic diagram of the first partial three-dimensional structure of the utility model.

[0013] Figure 3 This is a schematic diagram of the second partial three-dimensional structure of the utility model.

[0014] Figure 4 It is a partial cross-sectional view of the present utility model.

[0015] The reference numbers in the figure are: 1. sensor body, 2. connecting pipe, 3. air inlet, 4. slide, 41. first channel, 5. stopper, 6. second channel, 7. vent, 8. connecting port. DETAILED DESCRIPTION

[0016] The above scheme is further described below with reference to specific examples. It should be understood that these examples are intended to illustrate the present application and are not intended to limit the scope of the present application. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer. The implementation conditions not specified are generally those used in routine experiments.

[0017] Example: A sensor housing with a carbon smoke protection structure, such as Figure 1-Figure 4As shown, it includes a sensor body 1, a connecting pipe 2, a slide 4 and a block 5. The sensor body 1 is provided with a temperature and pressure sensor chip for accurately measuring the gas parameters in the intake manifold. The bottom of the sensor body 1 is connected to the connecting pipe 2. The connection between the sensor body 1 and the connecting pipe 2 adopts a sealed design to prevent external impurities from entering the sensor and affecting the measurement accuracy. An air inlet 3 is opened on the top of the connecting pipe 2. A second channel 6 is provided in the sensor body 1. A first channel 41 is provided at the left side of the second channel 6 in the sensor body 1. The first channel 41 and the second channel 6 are interconnected, and the positions of the two are staggered. The gas flows through the first channel 41 and the second channel 6, and the intake The port 3 is interconnected with the second channel 6. The connection between the lower end of the first channel 41 and the second channel 6 is connected to a slide 4 for preventing the accumulation of carbon soot particles. The top of the second channel 6 is connected to a block 5. The block 5 is at the junction of the first channel 41 and the second channel 6. The slide 4 is located on the left side of the block 5. The two are staggered. The slide 4 and the block 5 are both obliquely arranged, which is conducive to blocking and diverting carbon soot particles. The oblique angle of the slide 4 and the block 5 is 30° to 60° to optimize the blocking and diverting effect of carbon soot particles. The lower end of the connecting tube 2 is symmetrically provided with air vents 7, and a connecting port 8 is provided at the bottom of the connecting tube 2. The sensor body 1 is integrally injection molded and has high overall stability.

[0018] This device is installed in the intake manifold of a car and is used to monitor the pressure and temperature of the gas entering the intake manifold. The lower end of the connecting pipe 2 is placed in the intake manifold. When the gas flows inside the intake manifold, it enters the connecting pipe 2 through the vent 7 and then enters the second channel 6 through the air inlet 3. During the upward flow of the gas, it encounters a block 5, which can block the carbon soot particles carried in the gas. Since the block 5 is designed to be oblique, the gas can turn along the oblique surface of the block 5 and enter the first channel 41. Finally, the sensor body 1 realizes the monitoring of the gas pressure and temperature. When the air pressure reaches a stable state, the soot particles intercepted by the block 5 will fall downward under the action of gravity, and some of the particles will fall on the special slide 4. The slide 4 acts as a diversion to prevent the accumulation of soot particles and guides these particles back to the second channel 6 and finally back to the intake manifold through the connecting port 8. This design ensures the safety of the sensor body 1 and the accuracy of the measurement results. Through the unique structural design of the slide 4 and the block 5, the device effectively reduces the number of soot particles that directly impact the working air cavity, thereby reducing the risk of chip damage.

[0019] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A sensor housing with a soot-proof structure, characterized in that: The sensor body (1) comprises a sensor body (1), a connecting pipe (2), a slideway (4) and a stopper (5). The bottom of the sensor body (1) is connected to the connecting pipe (2), the top of the connecting pipe (2) is provided with an air inlet (3), a second channel (6) is provided in the sensor body (1), a first channel (41) is provided in the sensor body (1) at a position on the left side of the second channel (6), the first channel (41) and the second channel (6) are interconnected, the positions of the two are staggered, the air inlet (3) and the second channel (6) are interconnected, the lower end of the first channel (41) is connected to the slideway (4) at the connection point with the second channel (6), the top end of the second channel (6) is connected to the stopper (5), the lower end of the connecting pipe (2) is symmetrically provided with air vents (7), and the bottom of the connecting pipe (2) is provided with a connecting port (8).

2. The sensor housing with a soot-proof structure according to claim 1, characterized in that: The slideway (4) and the stopper (5) are both arranged obliquely.

3. The sensor housing with a soot-proof structure according to claim 2, characterized in that: The oblique angles of the slideway (4) and the stopper (5) are 30° to 60°.

4. The sensor housing with a soot-proof structure according to claim 3, characterized in that: The stopper (5) is located at the junction of the first channel (41) and the second channel (6), and the slideway (4) is located on the left side of the stopper (5), and the two are staggered.

5. The sensor housing with a soot-proof structure according to claim 4, characterized in that: The sensor body (1) is integrally injection molded.

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