Breathing structure of vehicle-mounted air compressor

Abstract

The utility model discloses a breathing structure of a vehicle-mounted air compressor, which belongs to the field of vehicle-mounted air compressors and comprises an oil tank, an air compressor main body is arranged on one side of the oil tank, and an air outlet in the upper part of the oil tank is communicated with an air inlet cavity in the air compressor main body through an air pipe. According to the breathing structure of the vehicle-mounted air compressor, the risk of air pipe blockage can be reduced.

Description

Technical Field

[0001] This application relates to the field of on-vehicle air compressors, and specifically to a breathing structure of an on-vehicle air compressor. Background Art

[0002] The on-vehicle air source system compresses air through the air compressor in the system and sends it into the storage tank for storage for use by other vehicle components. Among them, most on-vehicle air compressors use oil piston air compressors. For example, in new energy vehicles, oil piston air compressors are used to balance the pressure in the crankcase with the outside and effectively prevent external air from being sucked back into the cavity.

[0003] Most existing oil piston air compressors adopt an external ventilation method, that is, a gas pipe is led out from the fuel tank, and a one-way valve is set on the gas pipe to ensure unidirectional gas flow. However, during the actual vehicle installation and use process, since the vehicle moves outdoors and the working environment is complex and changeable, problems such as the gas pipe being blocked by external dust often occur, resulting in blocked ventilation and crankshaft backpressure. In this case, the pressure in the crankcase cannot be effectively balanced, which in turn affects the normal operation of the on-vehicle air source system and may even pose certain safety hazards.

[0004] Content of the Application

[0005] The purpose of this application is to address the above problems and provide a breathing structure for an on-vehicle air compressor that can reduce the risk of gas pipe blockage.

[0006] To achieve the above purpose, the technical solution adopted in this application is: a breathing structure of an on-vehicle air compressor, including a fuel tank. One side of the fuel tank is connected to the air compressor main body. The air outlet at the upper part of the fuel tank is communicated with the intake cavity in the air compressor main body through a gas pipe. The gas pipe connects the air outlet of the fuel tank with the intake cavity of the air compressor, so as to balance the pressure in the crankshaft cavity in the on-vehicle air compressor main body. At the same time, the gas pipe directly connects the air outlet of the fuel tank with the intake cavity, and the air will not contact the outside world, thereby reducing the risk of gas pipe blockage, reducing maintenance costs and failure rates.

[0007] Further, to improve the service life of the gas pipe and reduce the risk of gas pipe wall damage, a protective layer is provided on the outside of the gas pipe.

[0008] The beneficial effects of this application: By connecting the air outlet of the fuel tank with the intake cavity of the air compressor through a gas pipe, an internal circulation system of the air compressor is constructed, realizing the internal breathing mechanism of the air compressor, making it not easily affected by external conditions; at the same time, the air in the fuel tank is introduced into the air compressor through the gas pipe, which improves the pressure in the intake cavity of the air compressor to a certain extent and improves the oil leakage problem of the air compressor; it improves the integration degree of the on-vehicle air compressor, enabling it to better resist the influence of the working environment, thereby reducing maintenance costs and the probability of failures. Description of the Drawings

[0009] Figure 1 It is a schematic three-dimensional structure diagram of trachea connection.

[0010] Figure 2 It is a schematic side view structure diagram of trachea connection.

[0011] The text annotations in the figure are as follows: 1. Fuel tank; 2. Main body of air compressor; 3. Air pipe; 4. Intake cavity. Specific implementation manners

[0012] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present application.

[0013] As Figure 1-2 shown, the specific structure of this embodiment is a breathing structure of an on-vehicle air compressor, including a fuel tank 1. One side of the fuel tank 1 is connected to the main body 2 of the air compressor, and the other side of the fuel tank is connected to the motor. The air outlet at the upper part of the fuel tank 1 is communicated with the intake cavity 4 in the main body 2 of the air compressor through an air pipe 3. The air pipe 3 is fixedly connected to the air outlet of the fuel tank 1 and the air inlet of the intake cavity 4 through connecting parts such as flanges and pipe joints. An air filter is arranged in the intake cavity 4. A protective layer is arranged outside the air pipe 3. The protective layer outside the air pipe can be composed of a wrapping layer made of protective materials with certain toughness, waterproofness, wear resistance and other properties such as asbestos and felt. At the same time, a pipeline such as a stainless steel braided hose can also be selected as an overall replacement solution.

[0014] During operation, the gas generated at the air outlet at the upper end of the fuel tank 1 is introduced into the intake cavity 4 through the air pipe 3. The gas entering the intake cavity 4 is filtered by the air filter and then enters the air compressor. In this way, the air entering the air compressor does not contact the outside world, reducing the risk of air pipe blockage. At the same time, the gas generated during the operation of the air compressor is recycled to the intake cavity 4, improving the intake pressure of the main body 2 of the air compressor to a certain extent, which is beneficial to the improvement of the problem of air compressor oil leakage.

[0015] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0016] In this article, specific examples are used to elaborate on the principles and implementation manners of the present application. The description of the above examples is only used to help understand the method and its core idea of the present application. The above is only the preferred implementation manner of the present application. It should be noted that due to the limitation of literal expression, objectively there are infinite specific structures. For those of ordinary skill in the art, without departing from the principles of the present application, several improvements, embellishments or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, embellishments, changes or combinations, or directly applying the concept and technical solution of the application to other occasions without improvement, shall all be regarded as the protection scope of the present application.

Claims

1. A breathing structure of a vehicle-mounted air compressor, comprising an oil tank (1), an air compressor body (2) being arranged on one side of the oil tank (1), characterized in that: The air outlet at the upper part of the oil tank (1) is connected to the air inlet cavity (4) in the air compressor body (2) through an air pipe (3).

2. The breathing structure of a vehicle-mounted air compressor according to claim 1, characterized in that: A protective layer is arranged on the outside of the trachea (3).

Images