CN204941933U - A kind of scroll air compressor simplifying lubricating oil return oil channel structures - Google Patents

Abstract

The utility model relates to a vortex air compressor which simplifies the lubricating oil return oil circuit structure, comprising a static disk, a moving disk, a cross ring, a crankshaft, a frame, a main balance block, a secondary bearing pressure ring, a rear cover assembly, and a pulley , suction port and exhaust port, the moving disc meshes with the static disc to form an air compression chamber; the eccentric part of the crankshaft is installed on the hub of the moving disc, and the crankshaft is fixedly installed in the frame with the main bearing and the auxiliary bearing, A bearing is set between the crankshaft and the hub of the moving disc, and an oil supply circuit is provided on the frame and the crankshaft, and the oil supply circuit includes an oil supply hole on the frame and a crankshaft passage in the crankshaft , an oil supply passage is provided on the crankshaft passage to communicate with the oil supply hole to form an oil passage for conveying lubricating oil, so that the lubricating oil passes through the oil supply hole and is transported to the crankshaft passage through the oil supply passage; An oil return through hole, one end of the oil return through hole communicates with the oil supply oil circuit, and the other end communicates with the air suction port, so that the oil return through hole forms a return channel of the oil supply oil circuit. The lubricating oil passage of the utility model has simple design and structure, better oil supply performance, and can effectively improve the operating performance of the compressor.

Description

A Scroll Air Compressor with Simplified Lubricating Oil Return Oil Circuit Structure

technical field

The utility model relates to a scroll air compressor, in particular to a scroll air compressor which simplifies the structure of lubricating oil return oil circuit.

Background technique

Scroll air compressors are widely used in industrial, agricultural, transportation and other industries where compressed air is needed due to their high efficiency, low noise, small size, and benefits for energy saving and environmental protection. The main moving part of the scroll air compressor is the scroll, which is only meshed and does not produce wear, so the service life is longer than that of the piston and screw compressors. It is an ideal power source for pneumatic machinery. In the scroll air compressor, the scroll of the main moving parts is divided into a moving scroll (that is, a moving disk) and a fixed scroll (that is, a static disk). Usually, the movable scroll and the fixed scroll are combined to form a compression chamber. When the movable scroll is driven by the crankshaft to move in translation along a certain circular track, the scroll of the movable scroll rotates relative to the fixed scroll. The sheet moves, that is, the compression chamber formed by the two moves and changes its volume, thereby performing suction, compression, and discharge to complete the process of compressing air.

During the operation of the oil-injected scroll compressor, it is necessary to set up multiple oil passages in the compression chamber and the matching parts of the bearings to realize the functions of oil injection cooling and lubrication, and the oil circuit circuits for setting various cooling and lubricating oils rely on the outside It is realized by setting an oil return pipeline. Therefore, the compressor with this oil supply oil circuit structure has a complicated structure and high manufacturing cost.

Utility model content

The purpose of this utility model is to provide a scroll air compressor with a simplified lubricating oil return oil circuit structure in order to solve the above-mentioned shortcomings of the existing air scroll compressor.

The purpose of this utility model can be realized through the following technical solutions:

A scroll air compressor that simplifies the lubricating oil return oil circuit structure, including a static disk, a moving disk, an Oldham ring, a crankshaft, a frame, a main balance weight, a secondary bearing pressure ring, a rear cover assembly, a pulley, and an air suction port and the exhaust port, the moving disc meshes with the static disc to form an air compression chamber; the eccentric part of the crankshaft is installed on the hub of the moving disc, and the crankshaft is fixedly installed in the frame with the main bearing and the auxiliary bearing. Bearings are arranged between the hubs of the disk, and an oil supply circuit is provided on the frame and the crankshaft. The oil supply circuit includes an oil supply hole on the frame and a crankshaft passage in the crankshaft. The crankshaft passage An oil supply passage is provided on the upper part to communicate with the oil supply hole to form an oil passage for conveying lubricating oil, so that the lubricating oil can pass through the oil supply hole and be transported to the crankshaft passage through the oil supply passage; there is at least one oil return passage on the moving plate One end of the oil return through hole communicates with the oil supply oil circuit, and the other end communicates with the air suction port, so that the oil return through hole forms a circuit channel for the oil supply oil circuit.

The purpose of this utility model can also be achieved through the following technical solutions:

Further, the moving plate includes an end plate, and the oil return through hole is provided on the end plate.

Further, a frame oil supply channel 1 is provided on the frame corresponding to the position of the main bearing, and the frame oil supply channel 1 communicates with the oil supply hole to form an oil supply channel for the main bearing.

Further, the frame at the corresponding position of the secondary bearing is provided with a frame oil supply channel 2, and the frame oil supply channel 2 communicates with the oil supply hole to form an oil supply channel for the secondary bearing.

The beneficial effects of the utility model:

1. The oil supply circuit of the present utility model includes an oil supply hole on the frame and a crankshaft passage in the crankshaft. An oil supply passage is provided on the crankshaft passage to communicate with the oil supply hole to form a lubricating oil delivery channel. The oil passage makes the lubricating oil pass through the oil supply hole and is delivered to the crankshaft passage through the oil supply passage; there is at least one oil return through hole on the moving plate, one end of the oil return through hole communicates with the oil supply oil passage, and the other end communicates with the oil supply passage. The suction port is connected, so that the oil return through hole forms a circuit channel for the oil supply circuit. Therefore, the lubricating oil return circuit of the utility model does not need to be provided with an external oil return pipeline, so that the structure of the compressor is simpler, and is not affected by external pipelines and impurities, and the lubricating oil return is more stable and reliable. Therefore, it can effectively Improve the operation reliability of the scroll air compressor.

2. The moving plate of the utility model includes an end plate, and the oil return through hole is arranged on the end plate. The frame at the corresponding position of the main bearing is provided with a frame oil supply channel 1, and the frame oil supply channel 1 communicates with the oil supply hole to form the oil supply channel of the main bearing; the machine at the corresponding position of the auxiliary bearing The frame is provided with a frame oil supply oil channel 2, and the frame oil supply oil channel 2 communicates with the oil supply hole to form an oil supply channel for the auxiliary bearing. As a result, the oil supply effect of the compressor can be further improved, thereby improving the operating performance of the compressor.

3. In summary, the lubricating oil circuit of the present invention has a simple design structure and better oil supply performance, which can effectively improve the operation performance of the compressor, simplify the design of the compressor, reduce the manufacturing cost, and improve the industrial design level.

Description of drawings

Figure 1 is a schematic diagram of the overall distribution of the oil return circuit of the compressor of the utility model.

Fig. 2 is a schematic diagram of the structure of the oil return channel of the end plate of the moving plate of the utility model.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1 and Figure 2, a scroll air compressor with a simplified lubricating oil return oil circuit structure includes a static plate 1, a moving plate 2, an Oldham ring 3, a crankshaft 4, a frame 5, and a main balance weight 6 , auxiliary bearing pressure ring 7, rear cover assembly 8, pulley 9, air intake port and exhaust port, the moving disc 2 meshes with the static disc 1 to form an air compression chamber; the eccentric part of the crankshaft 4 is installed on the moving disc 2 On the hub of the crankshaft 4, the crankshaft 4 is fixedly installed in the frame 5 with the main bearing 16 and the auxiliary bearing 17, and the bearing 15 is set between the crankshaft 4 and the hub of the moving disk 2, and the oil supply oil is provided on the frame 5 and the crankshaft 4. road. Described oil supply oil path comprises and is located at the oil supply hole 5-2 on the frame 5 and is located at the crankshaft channel 4-3 in the crankshaft 4, is provided with an oil supply channel 4-1 on the crankshaft channel 4-3 and The oil supply hole 5-2 is correspondingly connected to form an oil passage for delivering lubricating oil, so that the lubricating oil passes through the oil supply hole 5-2 and is delivered to the crankshaft channel 4-3 through the oil supply channel 4-1; An oil return through hole 2-1 is provided, one end of the oil return through hole 2-1 communicates with the oil supply oil circuit, and the other end communicates with the suction port, so that the oil return through hole 2-1 forms a circuit of the oil supply oil circuit aisle.

In the embodiment, the moving disc 2 includes an end plate 2-2, and the oil return through hole 2-1 is provided on the end plate 2-2. The frame 5 at the corresponding position of the main bearing 16 is provided with a frame oil supply oil passage 5-1, and the frame oil supply oil passage 5-1 communicates with the oil supply hole 5-2 to form the main bearing 16 oil supply channel. The frame 5 at the corresponding position of the secondary bearing 17 is provided with a frame oil supply oil channel 2 4-2, and the frame oil supply oil channel 2 4-2 communicates with the oil supply hole 5-2 to form the secondary bearing 17 oil supply channel.

When the utility model is in use, lubricating oil enters the crankshaft passage 4-3 in the center of the crankshaft 4 through the oil supply hole 5-2 on the frame 5 through the oil passage 4-1 arranged radially on the crankshaft 4, and this part is lubricated The oil is divided into two parts, one part enters the bearing 15 of the eccentric part (that is, the eccentric shaft) at one end of the moving crankshaft 5, and enters the lower part of the frame 5 after cooling and lubricating the bearing 15, and the other part passes through the frame oil supply channel of the frame 5. 5-1 enters the main bearing 16, the frame oil supply oil channel 2 4-2 enters the auxiliary bearing 17, and then enters the lower part of the frame 5 through the auxiliary bearing 17 and the main bearing 16 after lubrication. The oil return through hole 2-1 of the disk end plate 2-2 returns to the compressor suction port, and finally discharges the compressor through the compression chamber.

Claims (4)

1. A scroll air compressor that simplifies the lubricating oil return circuit structure, including a static disc (1), a moving disc (2), an Oldham ring (3), a crankshaft (4), a frame (5), a main Balance weight (6), secondary bearing pressure ring (7), rear cover assembly (8), pulley (9), suction port and exhaust port, the moving disc (2) is meshed with the static disc (1) to form Air compression chamber; the eccentric part of the crankshaft (4) is installed on the wheel hub of the moving disc (2), and the crankshaft (4) is fixedly installed in the frame (5) with the main bearing (16) and the auxiliary bearing (17). A bearing (15) is arranged between the crankshaft (4) and the wheel hub of the moving disk (2), and an oil supply circuit is provided on the frame (5) and the crankshaft (4), and it is characterized in that: the described oil supply circuit Including the oil supply hole (5-2) on the frame (5) and the crankshaft channel (4-3) in the crankshaft (4), an oil supply channel ( 4-1) Correspondingly connected with the oil supply hole (5-2), forming an oil passage for delivering lubricating oil, so that the lubricating oil passes through the oil supply hole (5-2), and is delivered to the crankshaft channel through the oil supply channel (4-1) (4-3); at least one oil return through hole (2-1) is provided on the moving plate (2), one end of the oil return through hole (2-1) communicates with the oil supply circuit, and the other end communicates with the suction The gas ports are connected so that the oil return through hole (2-1) forms a circuit channel for the oil supply circuit. 2. According to claim 1, a scroll air compressor with a simplified lubricating oil return circuit structure, characterized in that: said moving disk (2) includes an end plate (2-2), and said The oil return through hole (2-1) is arranged on the end plate (2-2). 3. According to claim 1, a scroll air compressor with a simplified lubricating oil return oil circuit structure is characterized in that: the frame (5) at the corresponding position of the main bearing (16) is provided with a frame Oil supply oil passage one (5-1), this frame oil supply oil passage one (5-1) communicates with oil supply hole (5-2), forms the oil supply passage of main bearing (16). 4. According to claim 1, a scroll air compressor with a simplified lubricating oil return oil circuit structure is characterized in that: the frame (5) at the corresponding position of the auxiliary bearing (17) is provided with a frame Oil supply oil passage two (4-2), this frame oil supply oil passage two (4-2) communicates with oil supply hole (5-2), forms the oil supply passage of auxiliary bearing (17).