Permanent magnet brushless belt pulley air compressor

Abstract

The utility model provides a permanent magnet brushless belt pulley air compressor, and belongs to the technical field of air compressors. The utility model aims to provide the air compressor which is high in air pressure, large in air flow and convenient for outdoor operation. A permanent magnet brushless belt wheel air compressor comprises an air storage tank, a motor assembly and a compressor assembly, an output shaft of the motor assembly is fixedly connected with a driving wheel, an input shaft of the compressor assembly is fixedly connected with a driven wheel, and the driving wheel and the driven wheel are in transmission connection through a belt. A permanent magnet brushless direct current motor is fixedly connected to the top of the motor support, a direct current brushless motor controller is arranged in the motor support, and the permanent magnet brushless direct current motor is electrically connected with the direct current brushless motor controller. According to the scheme, high-pressure, large-air-volume and stable-operation compressed air can be provided when the device is used outdoors, the highest air pressure can reach 16 KG, and great convenience is provided for operation such as movable tire repair and road rescue.

Description

Technical Field

[0001] The utility model belongs to the technical field of air compressors, in particular to a permanent magnet brushless pulley air compressor. Background Art

[0002] An air compressor is a device used to compress gas. Its structure is similar to that of a water pump. Common air compressors on the market include piston air compressors, screw air compressors, and centrifugal air compressors. Among them, piston air compressors are widely used in various industries due to their mature technology, simple structure, wide pressure range, and high thermal efficiency. The main working principle of a piston air compressor is: when the piston in the air pump moves to the right, the pressure in the left chamber of the piston in the air pump is lower than the atmospheric pressure, the suction valve opens, and the outside air is sucked into the cylinder. This process is called the compression process; when the pressure in the cylinder is higher than the pressure in the output air pipeline, the exhaust valve opens, and the compressed air is sent to the air pipeline. This process is called the exhaust process. The reciprocating motion of the piston is formed by a crank slider mechanism driven by an electric motor, which converts the rotational motion of the crank into the reciprocating motion of the piston.

[0003] At present, the pulley air compressor is a common piston air compressor in daily life and work. The motor and air pump of the air compressor are connected by a pulley to transmit the mechanical energy output by the motor to the air pump to compress the air. Compared with other types such as integrated and oil-free machines, the pulley air compressor has higher power and can meet the needs of air compression with larger air volume or higher pressure. The pulley transmission can also reduce the vibration and impact of the air compressor, making it more stable and durable during operation. For example, the Chinese utility model patent with application number 2018214560549 discloses a belt-driven air compressor, including an air storage tank, an electric motor and a compressor assembly. A support platform is provided on the air storage tank. The compressor assembly includes an outer shell and a left air pump and a right air pump. A ventilation pipe is connected between the left air pump and the right air pump. The side of the right air pump is connected to an air intake pipe. A transmission shaft is provided in the outer shell, and a main pulley is provided at the front end of the transmission shaft. A pulley matching the main pulley is provided on the motor, and a transmission belt is connected between the pulley and the main pulley. However, the power supply of such air compressors is generally 220V single-phase electricity or 380V three-phase electricity, and the usage scenarios are relatively fixed. When outdoor operations are required, such as mobile tire repair, road rescue, etc., this type of air compressor is obviously not suitable.

[0004] The Chinese invention patent with application number 2017101921515 discloses an airborne DC oil-free air compressor, including a housing, a through-shaft DC permanent magnet brushless motor installed in the center of the housing, the through-shaft DC permanent magnet brushless motor is provided with an output shaft, a left fan is provided at one end of the output shaft, and a right fan is provided at the other end, a crank is provided on the output shaft between the left fan and the right fan and the through-shaft DC permanent magnet brushless motor, the crank is connected to the air pressure generator and drives the air pressure generator to compress air. This type of air compressor is light and compact, easy to carry, and can also be powered by connecting to a mobile power source such as a car battery, but due to the structural characteristics, the air pressure and air volume generated by this type of air compressor are generally small, and cannot be used in scenes with high air pressure requirements, and its operating stability is poor, and it is not suitable for long-term operation. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide an air compressor with high air pressure, large air volume and convenient for outdoor operation.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A permanent magnet brushless pulley air compressor comprises an air storage tank, a motor assembly and a compressor assembly. A support platform for fixing the motor assembly and the compressor assembly is provided on the top of the air storage tank. A driving wheel is fixedly connected to the output shaft of the motor assembly. A driven wheel is fixedly connected to the input shaft of the compressor assembly. The driving wheel and the driven wheel are connected by a belt transmission. The characteristic is that the motor assembly comprises a motor bracket, a permanent magnet brushless DC motor is fixedly connected to the top of the motor bracket, a DC brushless motor controller is provided inside the motor bracket, the permanent magnet brushless DC motor and the DC brushless motor controller are electrically connected, and a motor switch is provided on the side of the motor bracket.

[0008] When in use, turn on the motor switch, the motor assembly starts working, the output shaft of the motor assembly drives the driving wheel to rotate, and the belt connection between the driving wheel and the driven wheel drives the driven wheel to rotate, and then drives the input shaft on the compressor assembly to rotate, so that the compressor assembly starts working and compresses the air. This solution uses a permanent magnet brushless DC motor as a driving mechanism, which can be connected to a power supply of 12V, 24V, 48V, 60V, 72V, 96V, 110V, such as a common mobile power supply such as a car battery to fully power this air compressor. In addition, the characteristics of the pulley air compressor can provide high-pressure, large-volume, and stable compressed air when used outdoors, which provides great convenience for mobile tire repair, road rescue and other operations.

[0009] In this permanent magnet brushless pulley air compressor, the compressor assembly includes a first air pump and a second air pump. The first air pump is provided with an air inlet hole. The first air pump and the second air pump are connected through a connecting pipe. The second air pump is connected with an air delivery pipe, and the other end of the air delivery pipe is connected with an air storage tank. Air enters from the air inlet hole of the first air pump, and the air is compressed by the first air pump and the second air pump in two stages to further improve the air compression efficiency, and then is input into the air storage tank from the air delivery pipe for storage.

[0010] In this permanent magnet brushless pulley air compressor, the air storage tank is connected to the pressure gauge and the pressure switch through a three-way pipe, and the three-way pipe is also provided with a left outlet valve, a right outlet valve and a safety valve. The pressure gauge can visually see the air pressure in the air storage tank, and the pressure switch can automatically start and stop the air compressor. When the air pressure in the air storage tank is lower than the threshold, the pressure switch automatically starts the air compressor to store air, otherwise it is closed. When the air pressure in the air storage tank is too high, the safety valve opens to release the pressure.

[0011] In this permanent magnet brushless pulley air compressor, a protective cover is fixedly connected to the side of the air storage tank, and the outer dimensions of the protective cover are adapted to the transmission system formed by the driving wheel, the driven wheel and the belt, and the driving wheel, the driven wheel and the belt are covered in the protective cover. When the air compressor is working, the transmission system formed by the driving wheel, the driven wheel and the belt runs at a high speed, so a protective cover is required to protect it to prevent foreign objects from entering and causing damage to it.

[0012] In the permanent magnet brushless pulley air compressor, a group of front wheels and a group of rear wheels are arranged at the bottom of the air storage tank.

[0013] In the permanent magnet brushless pulley air compressor, a front handle is provided at the front end of the air storage tank, and a rear handle is provided at the rear end.

[0014] Compared with the prior art, the technical effect of the utility model is as follows: this solution adopts a permanent magnet brushless DC motor as a driving mechanism, which can be connected to a power supply of 12V, 24V, 48V, 60V, 72V, 96V, or 110V. Common mobile power supplies such as vehicle batteries can fully power the air compressor. Coupled with the characteristics of the pulley air compressor, it can provide high-pressure, large-volume, and stable compressed air even when used outdoors. The maximum air pressure can reach 16KG, which provides great convenience for mobile tire repair, road rescue, and other operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the whole structure of the utility model.

[0016] Figure 2 It is the front view of the utility model.

[0017] Figure 3 It is a schematic diagram of the back structure of the utility model.

[0018] Figure 4 It is a schematic diagram of the air outlet structure of the utility model.

[0019] In the figure, 1 is a gas storage tank, 11 is a support platform, 12 is a pressure gauge, 13 is a pressure switch, 14 is a left air outlet valve, 15 is a right air outlet valve, 16 is a safety valve, 2 is a motor assembly, 21 is a driving wheel, 22 is a motor support, 23 is a permanent magnet brushless DC motor, 24 is a DC brushless motor controller, 25 is a motor switch, 3 is a compressor assembly, 31 is a driven wheel, 32 is a first air pump, 33 is a second air pump, 34 is an air inlet, 35 is a connecting pipe, 36 is an air delivery pipe, 4 is a belt, 5 is a protective cover, 61 is a front wheel, 62 is a rear wheel, 71 is a front handle, and 72 is a rear handle. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1 , Figure 2 As shown, a permanent magnet brushless pulley air compressor comprises an air storage tank 1, a group of front wheels 61 and a group of rear wheels 62 are respectively arranged below the air storage tank, a front handle 71 and a rear handle 72 are respectively arranged at the front and rear ends of the air storage tank 1, a support platform 11 is arranged on the top of the air storage tank 1, a motor assembly 2 is arranged on the left part of the support platform 11, and a compressor assembly 3 is arranged on the right part of the support platform 11, the motor assembly 2 comprises a motor support 22, a permanent magnet brushless DC motor 23 is fixedly connected to the top of the motor support 22, a DC brushless motor controller 24 is arranged inside the motor support 22, the permanent magnet brushless DC motor 23 and the DC brushless motor controller 24 are electrically connected, a motor switch 25 is arranged on the side of the motor support 22, and the compressor assembly 3 comprises a first air pump 32 and a second air pump 33, the first air pump 32 is provided with an air inlet 34, the first air pump 32 and the second air pump 33 are connected through a connecting pipe 35, the second air pump 33 is connected to an air supply pipe 363, and the other end of the air supply pipe 3 is connected to the air storage tank 1.

[0022] Furthermore, a protective cover 5 is fixedly connected to the side of the gas storage tank 1 , and the outer dimensions of the protective cover 5 are adapted to the transmission system formed by the driving wheel 21 , the driven wheel 31 and the belt 4 , and the driving wheel 21 , the driven wheel 31 and the belt 4 are covered in the protective cover 5 .

[0023] Further, such as Figure 3 As shown, a driving wheel 21 is fixedly connected to the output shaft of the motor assembly 2, and a driven wheel 31 is fixedly connected to the input shaft of the compressor assembly 3. The driving wheel 21 and the driven wheel 31 are connected through a belt 4.

[0024] Further, such as Figure 4As shown, the gas storage tank 1 is connected to the pressure gauge 12 and the pressure switch 13 through a three-way pipe, and the three-way pipe is also provided with a left air outlet valve 14, a right air outlet valve 15 and a safety valve 16.

[0025] The working principle of this scheme is as follows: connect the air compressor to a mobile power source such as a vehicle battery, the power source can be 12V, 24V, 48V, 60V, 72V, 96V, 110V, then turn on the motor switch 25, the motor assembly 2 starts working, the output shaft of the motor assembly 2 drives the driving wheel 21 to rotate, and the belt 4 between the driving wheel 21 and the driven wheel 31 drives the driven wheel 31 to rotate, thereby driving the input shaft on the compressor assembly 3 to rotate, so that the compressor assembly 3 starts working, the crank rotation in the compressor assembly 3 drives the piston in the first air pump 32 to reciprocate, and check valves are provided at the air inlet and air outlet positions of the first air pump 32 and the second air pump 33. The air flows in through the air inlet of the first air pump 32, and undergoes secondary compression by the first air pump 32 and the second air pump 33, thereby further improving the air compression efficiency, and is input into the air storage tank 1 from the air pipe 36 for storage. This solution uses a permanent magnet brushless DC motor 23 as a driving mechanism. Common mobile power sources such as vehicle batteries can fully power the air compressor. Coupled with the characteristics of the pulley air compressor, it can provide high-pressure, large-volume, stable compressed air for outdoor use, which is very convenient for mobile tire repair, road rescue and other operations.

[0026] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope defined by the claims of the present invention.

Claims

1. A permanent magnet brushless pulley air compressor, comprising an air storage tank (1), a motor assembly (2) and a compressor assembly (3), wherein a support platform (11) for connecting the motor assembly (2) and the compressor assembly (3) is provided on the top of the air storage tank (1), a driving wheel (21) is connected to the output shaft of the motor assembly (2), a driven wheel (31) is connected to the input shaft of the compressor assembly (3), and the driving wheel (21) and the driven wheel (31) are connected to each other by a belt (4), characterized in that: The motor assembly (2) comprises a motor bracket (22), a permanent magnet brushless DC motor (23) is fixedly connected to the top of the motor bracket (22), a DC brushless motor controller (24) is arranged inside the motor bracket (22), the permanent magnet brushless DC motor (23) and the DC brushless motor controller (24) are electrically connected, and a motor switch (25) is arranged on the side of the motor bracket (22).

2. The permanent magnet brushless pulley air compressor according to claim 1 is characterized in that: The compressor assembly (3) comprises a first air pump (32) and a second air pump (33); the first air pump (32) is provided with an air inlet hole (34); the first air pump (32) and the second air pump (33) are connected via a connecting pipe (35); the second air pump (33) is connected to an air delivery pipe (36); the other end of the air delivery pipe (36) is connected to the air storage tank (1).

3. The permanent magnet brushless pulley air compressor according to claim 1, characterized in that: The gas storage tank (1) is connected to a pressure gauge (12) and a pressure switch (13) via a three-way pipe, and a left gas outlet valve (14), a right gas outlet valve (15) and a safety valve (16) are also provided on the three-way pipe.

4. The permanent magnet brushless pulley air compressor according to claim 1, characterized in that: A protective cover (5) is fixedly connected to the side of the gas storage tank (1); the outer dimensions of the protective cover (5) are adapted to a transmission system formed by a driving wheel (21), a driven wheel (31) and a belt (4); and the driving wheel (21), the driven wheel (31) and the belt (4) are covered in the protective cover (5).

5. The permanent magnet brushless pulley air compressor according to claim 1, characterized in that: A group of front wheels (61) and a group of rear wheels (62) are provided at the bottom of the gas storage tank (1).

6. The permanent magnet brushless pulley air compressor according to claim 1, characterized in that: The gas storage tank (1) is provided with a front handle (71) at the front end and a rear handle (72) at the rear end.

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