A crankcase ventilation pipe with an electrically heated connection

Abstract

A crankcase ventilation pipe with an electrically heated connector belongs to the technical field of engine crankcase ventilation systems. This utility model includes a pipe body, a first quick-connect connector and a second quick-connect connector disposed at both ends of the pipe body, and an electrically heated head integrally connected to the first quick-connect connector. The pipe body includes a heat-conducting aluminum tube and an arc-shaped pipe body connected to the heat-conducting aluminum tube, with the heat-conducting aluminum tube and the electrically heated head nested and fitted together. The first quick-connect connector and the electrically heated head are integrally structured, and the second quick-connect connector is connected to the arc-shaped pipe body. The first quick-connect connector and the second quick-connect connector are used to connect to the engine intake side and the crankcase side interface, respectively. This utility model overcomes the shortcomings of existing crankcase ventilation pipes, such as easy icing and blockage in low-temperature environments, poor adaptability, and insufficient safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of engine crankcase ventilation system, specifically relating to a crankcase ventilation pipe with an electric heating connector. Background Technology

[0002] The crankcase ventilation system is one of the core auxiliary systems of an internal combustion engine. Its core function is to guide the gases in the crankcase (mainly composed of unburned fuel and air) into the intake system for re-combustion, reducing harmful gas emissions and preventing problems such as oil leakage and seal damage caused by excessive crankcase pressure. The crankcase ventilation pipe is a key connecting component in the system, used to connect the crankcase and the intake manifold. However, existing crankcase ventilation pipes have significant technical defects in low-temperature environments: when the gases in the crankcase flow through the ventilation pipe and connectors, they rapidly condense and freeze due to the low temperature. Over time, this accumulation leads to poor ventilation on the inner wall of the pipe, severely increasing crankcase pressure and reducing engine output efficiency. Utility Model Content

[0003] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing a crankcase ventilation pipe with an electrically heated connector. This invention overcomes the defects of existing crankcase ventilation pipes, such as easy icing and blockage in low-temperature environments, poor adaptability, and insufficient safety.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] This utility model provides a crankcase ventilation pipe with an electric heating connector, characterized in that it includes a pipe body, a first quick-connect connector and a second quick-connect connector disposed at both ends of the pipe body, and an electric heating head integrally connected to the first quick-connect connector; the pipe body includes a heat-conducting aluminum tube and an arc-shaped pipe body connected to the heat-conducting aluminum tube, the heat-conducting aluminum tube and the electric heating head are nested and fitted together; the first quick-connect connector and the electric heating head are an integral structure, the second quick-connect connector is connected to the arc-shaped pipe body, and the first quick-connect connector and the second quick-connect connector are used to connect the engine intake side and the crankcase side interface respectively.

[0006] Furthermore, the electric heating head has an L-shaped integrated housing structure, which contains a heating element. The heating element is nested and wrapped around the upper outer side of the heat-conducting aluminum tube, so that the electric heating head is thermally connected to the heat-conducting aluminum tube.

[0007] Furthermore, the heat-conducting aluminum tube is a cylindrical aluminum rigid tube, and its outer wall is nested and fitted with the shell of the electric heating head.

[0008] Furthermore, the arc-shaped tube body is made of oil-resistant and heat-resistant PA6.12 material. The upper end of the arc-shaped tube body is connected to the first quick-connect connector, and the heat-conducting aluminum tube is nested inside the first quick-connect connector. The lower end of the arc-shaped tube body is connected to the second quick-connect connector.

[0009] Furthermore, both the first quick-connect connector and the second quick-connect connector are made of PA66GF35 material and both have a snap-fit ​​quick-installation structure.

[0010] Furthermore, the electric heating head is only attached to the outside of the heat-conducting aluminum tube and does not interfere with the airflow channel.

[0011] Furthermore, the heat-conducting aluminum tube, the arc-shaped tube body, and the channels inside the first quick-connect connector and the second quick-connect connector are connected to form a crankcase ventilation airflow channel.

[0012] Furthermore, the electric heating head is activated in a low-temperature environment to heat the heat-conducting aluminum tube through heat conduction, thereby preventing ice formation inside the tube.

[0013] The beneficial effects of this utility model.

[0014] This utility model achieves efficient heating of ventilation ducts through the integrated electric heating head and heat-conducting aluminum tube structure design, effectively preventing low-temperature icing; the quick-connect joint design facilitates installation and disassembly, improving assembly efficiency; the electric heating head does not interfere with the airflow channel, ensuring system safety; the compact structure adapts to the arrangement requirements of the narrow space in the engine compartment. Attached Figure Description

[0015] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention from another angle.

[0018] In the diagram, the markings are: 1 for the tube body, 11 for the heat-conducting aluminum tube, 12 for the arc-shaped tube body, 2 for the first quick-connect connector, 3 for the second quick-connect connector, and 4 for the electric heating head. Detailed Implementation

[0019] As shown in the accompanying drawings, this embodiment provides a crankcase ventilation pipe with an electrically heated connector. This ventilation pipe is a quick-connect pipe assembly with integrated electric heating function, suitable for engine crankcase ventilation systems, and can effectively prevent icing and blockage inside the pipe, especially in cold or low-temperature working environments.

[0020] The ventilation duct assembly comprises a duct body 1, a first quick-connect fitting 2, a second quick-connect fitting 3, and an electric heating head 4. The duct body 1 is composed of a heat-conducting aluminum tube 11 and an arc-shaped tube body 12. The heat-conducting aluminum tube 11 is a cylindrical rigid aluminum tube with excellent thermal conductivity. The arc-shaped tube body 12 is made of oil-resistant and heat-resistant PA6.12 material, possessing a certain degree of flexibility for easy installation in the engine compartment. The upper end of the arc-shaped tube body 12 is connected to the first quick-connect fitting 2, which forms a nested rigid connection with the heat-conducting aluminum tube 11. The lower end of the arc-shaped tube body 12 is connected to the second quick-connect fitting 3, forming a continuous airflow channel.

[0021] The electric heating head 4 has an L-shaped integrated housing structure, which integrates an electric heating element (not shown in the figure, such as a PTC heating element or resistance wire). The electric heating head 4 and the first quick-connect connector 2 are integrally formed, and together they constitute one end connection component of the pipeline. The heating element inside the electric heating head 4 is nested and wrapped around the upper outer wall of the heat-conducting aluminum tube 11, transferring heat to the heat-conducting aluminum tube 11 through heat conduction, thereby heating the gas flowing inside. Importantly, the electric heating head 4 is only located outside the pipeline and does not extend into the airflow channel, thus ensuring that the gas flow is not disturbed and improving the safety of use.

[0022] The first quick-connect connector 2 and the electric heating head 4 are integrated into one structure, while the second quick-connect connector 3 is independently installed and connected to the lower end of the arc-shaped tube body 12. Both the first quick-connect connector 2 and the second quick-connect connector 3 are made of PA66GF35 material, which has high strength and good heat resistance. Both are snap-fit ​​quick-installation structures, specifically including components such as snaps and sealing rings (not shown in the figure), to achieve quick and sealed connection with the engine intake manifold interface and crankcase interface. This quick-connect design facilitates installation and maintenance, and improves assembly efficiency.

[0023] The internal channels of the heat-conducting aluminum tube 11, the arc-shaped tube body 12, the first quick-connect connector 2, and the second quick-connect connector 3 are interconnected, forming a complete ventilation path from the crankcase to the intake manifold. Gas enters the arc-shaped tube body 12 from the crankcase via the second quick-connect connector 3, flows through the first quick-connect connector 2, and finally enters the engine intake system through the heat-conducting aluminum tube 11 nested inside the first quick-connect connector 2.

[0024] During operation, the electric heating head 4 is activated when the ambient temperature is detected to be below a set threshold (e.g., 0°C) or when the engine control unit issues a heating command. Its internal heating element generates heat, which is rapidly transferred to the tightly fitted heat-conducting aluminum tube 11 through a nested wrapping mechanism between the heating element and the upper outer wall of the heat-conducting aluminum tube. Once heated, the heat-conducting aluminum tube 11 heats the gas flowing inside, raising its temperature and preventing the moisture and oil-gas mixture within it from condensing into ice at low temperatures, thus avoiding pipe blockage. The heating process can be continuous or intermittent as needed until the ambient temperature rises or the risk of icing is eliminated.

[0025] This ventilation duct has a compact structure, integrating the heating function into the joint area without occupying additional engine compartment space; it boasts high heating efficiency, conducting heat directly through the aluminum tube; and it is safe and reliable, with the heating components completely isolated from the airflow. It is suitable for crankcase ventilation systems in various internal combustion engine vehicles and equipment, performing particularly well in cold regions or winter operating conditions.

[0026] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A crankcase ventilation pipe with an electrically heated connector, characterized in that, The device includes a tube body (1), a first quick-connect connector (2) and a second quick-connect connector (3) disposed at both ends of the tube body (1), and an electric heating head (4) integrally connected to the first quick-connect connector (2). The tube body (1) includes a heat-conducting aluminum tube (11) and an arc-shaped tube body (12) connected to the heat-conducting aluminum tube (11). The heat-conducting aluminum tube (11) and the electric heating head (4) are nested and fitted together. The first quick-connect connector (2) and the electric heating head (4) are integral structures. The second quick-connect connector (3) is connected to the arc-shaped tube body (12). The first quick-connect connector (2) and the second quick-connect connector (3) are used to connect the engine intake side and the crankcase side interface, respectively.

2. A crankcase ventilation pipe with an electrically heated joint according to claim 1, characterized in that, The electric heating head (4) is an L-shaped integrated shell structure with a heating element inside. The heating element is nested and wrapped around the upper outer side of the heat-conducting aluminum tube (11), so that the electric heating head (4) and the heat-conducting aluminum tube (11) are thermally connected.

3. A crankcase ventilation pipe with an electrically heated joint according to claim 2, characterized in that, The heat-conducting aluminum tube (11) is a cylindrical aluminum hard tube, and its outer wall is nested and fitted with the shell of the electric heating head (4).

4. A crankcase ventilation pipe with an electrically heated joint according to claim 1, characterized in that, The arc-shaped tube body (12) is made of oil-resistant and heat-resistant PA6.12 material. The upper end of the arc-shaped tube body (12) is connected to the first quick connector (2). The heat-conducting aluminum tube (11) is nested inside the first quick connector (2). The lower end of the arc-shaped tube body (12) is connected to the second quick connector (3).

5. A crankcase ventilation pipe with an electrically heated joint according to claim 1, characterized in that, Both the first quick-connect connector (2) and the second quick-connect connector (3) are made of PA66GF35 material and are snap-fit ​​quick-installation structures.

6. A crankcase ventilation pipe with an electrically heated joint according to claim 1, characterized in that, The electric heating head (4) is attached only to the outside of the heat-conducting aluminum tube (11) and does not interfere with the airflow channel.

7. A crankcase ventilation pipe with an electrically heated joint according to claim 1, characterized in that, The heat-conducting aluminum tube (11), the arc-shaped tube body (12), the first quick-connect connector (2) and the second quick-connect connector (3) are connected to form a crankcase ventilation airflow channel.

8. A crankcase ventilation pipe with an electrically heated joint according to claim 1, characterized in that, The electric heating head (4) is activated in a low-temperature environment and heats the heat-conducting aluminum tube (11) through heat conduction to prevent ice formation inside the tube.

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