Air compressor

Abstract

A compressor, a motor, a controller and an oil-gas separator are installed on a machine frame of the air compressor, a water tank is arranged on the outer side of the machine frame, a first heat exchanger is installed in the water tank, a second heat exchanger is installed on the upper side of the machine frame, and cooling oil and high-pressure gas of compressed gas are separated through the oil-gas separator. Wherein the high-pressure gas is discharged after being cooled by the second heat exchanger, the cooling oil firstly enters the first heat exchanger in the water tank, then is cooled by the second heat exchanger and then returns into the compressor, the water temperature in the water tank can be adjusted as required according to the environment temperature, and cold water is filled in summer with higher temperature; and in winter with the low temperature, the cooling water can be heated through the heating rod, the cooling oil is heated at the constant temperature, it is ensured that the cooling oil can flow normally, and then flowing circulation heat exchange of the cooling oil to the device in various temperature environments is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressor equipment, in particular to an air compressor. Background Art

[0002] An air compressor is a device widely used in the industrial field. Its main working principle is that it is driven by an electric motor, which converts the rotational motion of the motor into the reciprocating motion of the piston through a transmission mechanism, thereby compressing the air. By compressing the air, a large amount of mechanical energy is generated. This mechanical energy can be used to drive various equipment, such as pneumatic tools, air drills, pneumatic valves, etc., providing powerful power for various production.

[0003] Air compressors generate a lot of heat during use. To avoid excessive temperature affecting the normal use of the device, cooling oil is usually used for lubrication and heat exchange. However, the use of cooling oil has the following problems: in the hot summer, the cooling oil temperature is high, and the heat exchange efficiency between the device and the air compressor will be significantly reduced. In the cold winter, the cooling oil temperature is low, which will reduce its fluidity and fail to achieve normal circulation and heat exchange functions. Summary of the invention

[0004] The utility model aims to provide an air compressor, which solves the problems in the prior art by arranging a water tank, a heat exchanger and a heating rod, and performing heat exchange and cooling or heating of the cooling oil under different temperature conditions to ensure the normal circulation and heat exchange of the cooling oil.

[0005] The technical solution adopted by the utility model to solve the technical problem is: an air compressor, including a frame, a compressor, a motor, a controller and an oil-gas separator are installed in the frame, a water tank is installed outside the frame, wherein the controller is connected to the motor, the compressor and the oil-gas separator through a control line, the output shaft of the motor is connected to the power input shaft of the compressor, a first pipeline is installed between the compressor and the oil-gas separator, a first heat exchanger is installed in the water tank, a second heat exchanger is installed on the upper part of the frame, a second pipeline is installed between the oil-gas separator and the first heat exchanger, a third pipeline is installed between the first heat exchanger and the second heat exchanger, and a fourth pipeline is installed between the second heat exchanger and the compressor. The invention discloses a novel heat exchanger system, wherein the cooling oil separated by the oil-gas separator can enter the compressor through the second pipeline, the first heat exchanger, the third pipeline, the second heat exchanger and the fourth pipeline in sequence, and the gas separated by the oil-gas separator can enter the exhaust pipe through the fifth pipeline and the second heat exchanger in sequence. The water tank is equipped with a temperature sensor, a thermostat and a heating rod, and a fan is installed on the frame at the lower side of the second heat exchanger. The upper part of the frame is equipped with a sunken heat exchanger groove, and a mounting frame is provided at the bottom of the heat exchanger groove. The fan is horizontally arranged on the mounting frame. A heat dissipation protection door is installed on the side of the frame away from the water tank. An electric control box is installed in the frame, and the controller is located in the electric control box. A control panel is also installed on the upper side of the electric control box. A filter device is installed between the fan and the second heat exchanger, and the filter device includes a first square hole plate arranged horizontally, a vertical plate is provided at the end of the first square hole plate, a handle is installed on the vertical plate, a slot block is provided on both sides of the first square hole plate, a second square hole plate is installed in the slot block, the second square hole plate is located on the upper side of the first square hole plate, a grille filter is installed between the first square hole plate and the second square hole plate, and a slideway matching the first square hole plate, the grille filter and the second square hole plate is also provided on the inner walls on both sides of the mounting frame. The water tank is fixedly installed on the frame through a clamping frame, and a heat insulation board is also provided between the water tank and the frame. A connected water supply pipe is installed at the upper end of the water tank, and a connected drain pipe is installed at the lower end of the water tank. Valves are installed on the water supply pipe and the drain pipe.

[0006] The positive effect of the utility model is that a compressor, a motor, a controller and an oil-gas separator are installed on the frame of the air compressor, a water tank is arranged on the outside of the frame, a first heat exchanger is installed in the water tank, and a second heat exchanger is installed on the upper side of the frame. The compressed gas separates the cooling oil from the high-pressure gas through the oil-gas separator, wherein the high-pressure gas is discharged after being cooled by the second heat exchanger, and the cooling oil will first enter the first heat exchanger in the water tank, and then return to the compressor after being cooled by the second heat exchanger. The water temperature in the water tank can be adjusted as needed according to the ambient temperature. Cold water can be filled in the summer when the temperature is higher, so as to further improve the cooling and heat exchange efficiency of the cooling oil for the device. In the winter when the temperature is lower, the cooling water can be heated and heated by a heating rod, and the cooling oil is heated at a constant temperature to ensure that the cooling oil can flow normally, thereby realizing the flow circulation and heat exchange of the cooling oil for the device under various temperature environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0008] Figure 2 It is the front view of the utility model;

[0009] Figure 3 yes Figure 2 A top view of

[0010] Figure 4 yes Figure 2 Right view of;

[0011] Figure 5 yes Figure 2 Rear view of

[0012] Figure 6 It is a schematic diagram of the structure of the utility model after the frame is removed;

[0013] Figure 7 yes Figure 3 An enlarged view of the AA section view;

[0014] Figure 8 is a schematic diagram of the structure in the first heat exchanger;

[0015] Fig. 9 It is a schematic diagram of the structure inside the second heat exchanger. DETAILED DESCRIPTION

[0016] The utility model discloses an air compressor, such as Figure 1-6 As shown, it includes a frame 1, which serves as a structural basis. A compressor 2, a motor 3, a controller 4 and an oil-gas separator 5 are installed in the frame 1. A water tank 6 is installed outside the frame 1, and the water tank 6 is filled with cooling water for heat exchange.

[0017] The controller 4 is connected to the motor 3, the compressor 2 and the oil-gas separator 5 through the control line to realize the control of each component, and the output shaft of the motor 3 is connected to the power input shaft of the compressor 2. The compressor 2 is the core component of the air compressor and one of the most basic components of the air compressor. Its working principle is to compress the air to the required pressure level through the piston, screw or turbine in the compressor. The performance of the compressor 2 directly determines the power and efficiency of the air compressor.

[0018] The motor 3 is the power source of the air compressor, and it is responsible for providing power to the compressor 2 to enable it to operate normally. The motor 3 and the compressor 2 can be connected by belts, gears and other connecting parts to achieve the purpose of rotation. The power of the motor 3 should match the power of the compressor 2 to ensure that the refrigeration equipment has enough power to operate normally.

[0019] Controller 4 is the control center of the air compressor. It monitors and adjusts the working status of the compressor to ensure that the compressor can operate normally within a predetermined range. Controller 4 can be a circuit board with program control, or it can include exhaust temperature protectors, electronic controllers, pressure switches and other parts, so that compressor 2 can automatically start, stop or adjust according to the current working status.

[0020] In order to realize the circulation heat exchange of cooling oil and the cooling transportation of high-pressure gas, a first pipeline 7 is installed between the compressor 2 and the oil-gas separator 5. The high-pressure gas in the compressor 2 and the cooling oil will enter the oil-gas separator 5 through the first pipeline 7 to realize the separation of high-pressure gas and cooling oil.

[0021] A first heat exchanger 8 is installed in the water tank 6, a second heat exchanger 9 is installed on the upper part of the frame 1, a second pipeline 10 is installed between the oil-gas separator 5 and the first heat exchanger 8, a third pipeline 11 is installed between the first heat exchanger 8 and the second heat exchanger 9, and a fourth pipeline 12 is installed between the second heat exchanger 9 and the compressor 2. A fifth pipeline 13 is installed between the oil-gas separator 5 and the second heat exchanger 9, and an exhaust pipe 14 is installed on one side of the second heat exchanger 9. The second pipeline 10 and the third pipeline 11 are connected in the first heat exchanger 8, the third pipeline 11 and the fourth pipeline 12 are connected in the second heat exchanger 9, and the fifth pipeline 13 and the exhaust pipe 14 are connected in the second heat exchanger 9.

[0022] The cooling oil separated by the oil-gas separator 5 can enter the compressor 2 via the second pipeline 10, the first heat exchanger 8, the third pipeline 11, the second heat exchanger 9 and the fourth pipeline 12 in sequence, and the gas separated by the oil-gas separator 5 can enter the exhaust pipe 14 via the fifth pipeline 13 and the second heat exchanger 9 in sequence. The cooling oil, as a heat exchange cooling medium, will enter the first heat exchanger 8 and the second heat exchanger 9 for two coolings during the circulation process, wherein the first heat exchanger 8 exchanges heat with cooling water for cooling, and its heat exchange efficiency is faster, and the second heat exchanger 9 is cooled by air, and the discharged high-pressure gas will also be cooled by air in the second heat exchanger 9, and then discharged for use by the power equipment.

[0023] In a high temperature environment, the water tank 6 is filled with cold water at a low temperature to achieve rapid heat exchange and cooling of the cooling oil. If the normal flow performance of the cooling oil is affected in a low temperature environment, the cooling water in the water tank 6 needs to be heated and heated. When the device is started, the temperature of the cooling oil is increased so that it can circulate normally and complete the heat exchange and cooling of the air compressor. In order to achieve real-time monitoring of the water temperature in the water tank 6, a temperature sensor 15, a thermostat 29 and a heating rod 16 are installed in the water tank 6. When the temperature sensor 15 detects that the water temperature in the water tank 6 is low under low ambient temperature, the thermostat 29 controls the heating rod 16 to start heating the water, and at the same time, heats the cooling oil for heat exchange, and maintains the cooling water at a constant temperature to exchange heat with the cooling oil by heating, ensuring its normal fluidity so that it can circulate and exchange heat after the device is started.

[0024] In order to achieve air-cooled heat exchange and cooling at the position of the second heat exchanger 9 , a fan 17 is installed on the frame 1 at the lower side of the second heat exchanger 9 .

[0025] Furthermore, in order to facilitate the arrangement of the second heat exchanger 9 and the fan 17 in the frame 1, a sunken heat exchanger groove 18 is installed on the upper part of the frame 1, and a mounting frame 19 is provided at the bottom of the heat exchanger groove 18. The second heat exchanger 9 is located in the heat exchanger groove 18, and the fan 17 is horizontally arranged on the mounting frame 19. A ventilation space is left at the bottom of the heat exchanger groove 18, and the fan 17 blows air upward to achieve air cooling of the second heat exchanger 9.

[0026] To improve the heat dissipation of the device while protecting the internal mechanism, a heat dissipation protection door 20 is installed on the side of the frame 1 away from the water tank 6. An electric control box 21 is installed in the frame 1, the controller 4 is located in the electric control box 21, and a control panel 22 is also installed on the upper side of the electric control box 21.

[0027] When the air compressor described in the utility model is used outdoors, with respect to the fan 17 at the air cooling position and the second heat exchanger 9, during the blowing process, it is easy for catkins, dust and other debris in the external environment to accumulate on the surface or in the gap of the second heat exchanger 9, thereby reducing the heat exchange and cooling efficiency of the second heat exchanger 9. In order to solve the above problem, a filtering device is installed between the fan 17 and the second heat exchanger 9, and the filtering device includes a first square hole plate 23 arranged horizontally, and a vertical plate 24 is provided at the end of the first square hole plate 23. A handle 25 is installed on the vertical plate 24, such as Figure 7 As shown, both sides of the first square hole plate 23 are provided with a slot block 30, and the second square hole plate 26 is installed in the slot block 30. The second square hole plate 26 is located on the upper side of the first square hole plate 23, and a grille filter 27 is installed between the first square hole plate 23 and the second square hole plate 26. The inner walls on both sides of the mounting frame 19 are also provided with a slide groove 28 that matches the first square hole plate 23, the grille filter 27 and the second square hole plate 26.

[0028] The first square hole plate 23 and the second square hole plate 26 are provided with a number of evenly arranged square holes, so as to facilitate the blowing and ventilation with the grille filter 27. The grille filter 27 can effectively prevent the attachment of catkins and other debris to the second heat exchanger 9 as a barrier net, and the arrangement of the slot block 30 between the first square hole plate 23 and the second square hole plate 26 makes it easy to disassemble, clean and replace the grille filter 27, and at the same time prevent the grille filter 27 from being deformed under the action of blowing, thereby ensuring the normal filtering function. The vertical plate 24 cooperates with the mounting frame 19, and the arrangement of the slide groove 28 allows the filter device to be pulled out and used in the mounting frame 19 like a drawer, and is located between the fan 17 and the second heat exchanger 9, so as to achieve its corresponding debris blocking function.

[0029] Furthermore, in order to achieve effective heat exchange of the separated high-pressure gas and cooling oil in the first heat exchanger 8 and the second heat exchanger 9, as shown in FIG. Figure 8 and Fig. 9 As shown, heat exchange tubes and heat exchange medium may be installed in the first heat exchanger 8 and the second heat exchanger 9.

[0030] Furthermore, the water tank 6 is fixedly mounted on the frame 1 through a clamping frame 32. In order to reduce the heat conduction effect caused by the contact between the device and the water tank 6, a heat insulation board 33 is also provided between the water tank 6 and the frame 1. The heat insulation board 33 can be made of heat insulation material, thereby greatly reducing the heat conduction between the frame 1 and the water tank 6, and ensuring the heat exchange and cooling between the cooling water and the cooling oil in the water tank 6. In order to realize the replenishment and discharge of the cooling water in the water tank 6, a connected water supply pipe 34 is installed at the upper end of the water tank 6, and a connected drainage pipe 35 is installed at the lower end of the water tank 6. Valves 31 are installed on both the water supply pipe 34 and the drainage pipe 35.

[0031] The technical solution of the present invention is not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all known technologies.

Claims

1. An air compressor, characterized in that: The invention comprises a frame (1), a compressor (2), a motor (3), a controller (4) and an oil-gas separator (5) are installed in the frame (1), a water tank (6) is installed outside the frame (1), the controller (4) is connected to the motor (3), the compressor (2) and the oil-gas separator (5) through a control line, the output shaft of the motor (3) is connected to the power input shaft of the compressor (2), a first pipeline (7) is installed between the compressor (2) and the oil-gas separator (5), a first heat exchanger (8) is installed in the water tank (6), a second heat exchanger (9) is installed on the upper part of the frame (1), a second pipeline (10) is installed between the oil-gas separator (5) and the first heat exchanger (8), a third pipeline (11) is installed between the first heat exchanger (8) and the second heat exchanger (9), a fourth pipeline (12) is installed between the second heat exchanger (9) and the compressor (2), and a second pipeline (13) is installed between the oil-gas separator (5) and the second heat exchanger (9). A fifth pipeline (13) is provided, and an exhaust pipe (14) is installed on one side of the second heat exchanger (9), wherein the second pipeline (10) and the third pipeline (11) are connected in the first heat exchanger (8), the third pipeline (11) and the fourth pipeline (12) are connected in the second heat exchanger (9), and the fifth pipeline (13) and the exhaust pipe (14) are connected in the second heat exchanger (9). The cooling oil separated by the oil-gas separator (5) can be discharged in sequence through the second pipeline (10), the third pipeline (11) and the fourth pipeline (12) A heat exchanger (8), a third pipeline (11), a second heat exchanger (9) and a fourth pipeline (12) enter the compressor (2), and the gas separated by the oil-gas separator (5) can enter the exhaust pipe (14) via the fifth pipeline (13) and the second heat exchanger (9) in sequence. A temperature sensor (15), a temperature controller (29) and a heating rod (16) are installed in the water tank (6), and a fan (17) is installed on the frame (1) at the lower side of the second heat exchanger (9).

2. An air compressor according to claim 1, characterized in that: A sunken heat exchanger groove (18) is installed on the upper part of the frame (1), a mounting frame (19) is provided at the bottom of the heat exchanger groove (18), the fan (17) is horizontally arranged on the mounting frame (19), a heat dissipation protection door (20) is installed on a side of the frame (1) away from the water tank (6), an electric control box (21) is installed in the frame (1), the controller (4) is located in the electric control box (21), and a control panel (22) is also installed on the upper side of the electric control box (21).

3. An air compressor according to claim 2, characterized in that: A filtering device is installed between the fan (17) and the second heat exchanger (9), the filtering device comprising a first square hole plate (23) arranged horizontally, a vertical plate (24) being provided at the end of the first square hole plate (23), a handle (25) being installed on the vertical plate (24), a slot block (30) being provided on both sides of the first square hole plate (23), a second square hole plate (26) being installed in the slot block (30), the second square hole plate (26) being located on the upper side of the first square hole plate (23), a grille filter (27) being installed between the first square hole plate (23) and the second square hole plate (26), and a slide groove (28) being provided on the inner walls on both sides of the mounting frame (19) and being matched with the first square hole plate (23), the grille filter (27) and the second square hole plate (26).

4. An air compressor according to claim 1, characterized in that: The water tank (6) is fixedly mounted on the frame (1) via a pressing frame (32); a heat insulating plate (33) is further provided between the water tank (6) and the frame (1); a connected water supply pipe (34) is installed at the upper end of the water tank (6); a connected drainage pipe (35) is installed at the lower end of the water tank (6); and valves (31) are installed on both the water supply pipe (34) and the drainage pipe (35).

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