Cooling device for air compressor

Abstract

The present application relates to the field of air compressor cooling, and in particular to a cooling device for an air compressor, comprising a cooler arranged in an air compressor chassis and for dissipating heat and cooling compressed air and coolant, a lower air duct tightly fitted to the cooler, and a lower fan arranged in the lower air duct and for blowing air toward the cooler, wherein the lower air duct is provided with an inner filter capable of filtering the airflow blown toward the cooler, and an air inlet filter for filtering the gas entering the lower fan is surrounded on one side of the lower fan away from the cooler, wherein the mesh number of the air inlet filter is greater than the mesh number of the inner filter, so that the airflow finally blown toward the cooler contains less impurities, thereby reducing the possibility of affecting the normal operation of the cooler.

Description

Technical Field

[0001] The present application relates to the field of air compressor cooling, and in particular to a cooling device for an air compressor. Background Art

[0002] Air compressors are used to compress air, and a lot of heat is released during the air compression process. To prevent the air compressor from being damaged due to the accumulation of too much heat, the compressed air needs to be cooled. At the same time, the cooling oil will circulate continuously during the operation of the air compressor to take away the heat generated by the operation of the air compressor in time. Therefore, the cooling oil also needs to be cooled in time. In order to save space, general air compressors will pass the cooling oil and compressed air through different pipes of the same plate-fin cooler, and cooperate with fans to achieve cooling of the compressed air and cooling oil through one cooler.

[0003] The cooler of an existing air compressor is generally installed on the upper part of the chassis, such as the independently cooled vane air compressor for an electrolytic aluminum environment overhead crane with announcement number CN207634329U. A fan is then installed under the cooler, and the fan blows air toward the cooler directly above it, so that the heat of the cooler is carried away by the upward airflow and sent out of the chassis.

[0004] Regarding the above-mentioned related technologies, since the airflow blown by the fan to the cooler will carry a lot of dust and impurities such as debris generated during the operation of the air compressor will directly accumulate on the surface of the cooler, after a certain period of operation, there will be a lot of impurities on the surface of the cooler, which will affect the heat dissipation effect and affect the normal operation of the air compressor. Summary of the invention

[0005] In order to reduce the impact on the normal operation of an air compressor, the present application provides a cooling device for an air compressor.

[0006] The present application provides a cooling device for an air compressor adopts the following technical solution.

[0007] A cooling device for an air compressor comprises a cooler which is arranged in an air compressor chassis and performs heat dissipation and cooling on compressed air and coolant, a lower air duct tightly fitted on the cooler, and a lower fan which is arranged in the lower air duct and blows air toward the cooler, wherein an inner filter screen is arranged in the lower air duct for filtering the air flow toward the cooler, and an air inlet filter screen is arranged on a side of the lower fan away from the cooler and filters the gas entering the lower fan, wherein the mesh number of the air inlet filter screen is greater than the mesh number of the inner filter screen.

[0008] By adopting the above technical scheme, the air will be filtered by the air inlet filter before entering the lower air duct cover, so that impurities in the air are filtered out, and the air inlet filter with a smaller mesh size is arranged outside the lower air duct cover and surrounds the lower fan. Compared with the arrangement of the air inlet filter arranged inside the lower air duct cover, the area of ​​the lower air duct cover is larger, which is conducive to the maximum air flow entering the lower air duct cover not being greatly affected. The arrangement of the filter inside the cover filters and blocks some larger volume of waste chips that may be generated by the lower fan during long-term operation, so as to further protect the cooler and prevent the normal operation of the cooler from being greatly affected.

[0009] Optionally, the lower air guide cover is fixedly connected to a ledge detachably connected to the air compressor chassis at its periphery, and the filter screen inside the cover and the filter screen at the air inlet are both detachably connected to the lower air guide cover.

[0010] By adopting the above technical solution, when a large amount of impurities are accumulated on the surface of the air inlet filter, or when the air guide cover and the filter inside the cover are regularly inspected and cleaned conveniently.

[0011] Optionally, the lower fan is rotatably connected to the lower air guide cover so that the lower fan can blow air toward the air inlet filter, and the lower air guide cover is provided with a rotating motor that can drive the lower fan to rotate.

[0012] By adopting the above technical solution, after a certain amount of dust and impurities accumulate on the surface of the air inlet filter, the lower fan can be rotated to blow air toward the air inlet filter for cleaning. When there is enough space inside the chassis and the air guide cover, there is no need to frequently disassemble and clean the air inlet filter.

[0013] Optionally, a base pipe that can be exposed outside the lower air guide hood is slidably connected inside the lower air guide hood, a plugging piece that can seal the base pipe is fixedly connected to the base pipe, an air outlet filter that can filter the gas passing through the base pipe is fixedly connected to the base pipe, the air outlet filter is farther away from the center of the lower air guide hood than the plugging piece, the base pipe is provided with a pipe opening located between the plugging piece and the air outlet filter, and the lower air guide hood is provided with a pipe moving electric cylinder that can drive the base pipe to move along the direction of the connection between the plugging piece and the air outlet filter.

[0014] By adopting the above technical scheme, when the lower fan blows out air toward the cooler, the part of the base tube with the pipe opening is located outside the lower air duct cover, so that the base tube cannot connect the inside and outside of the lower air duct cover; when the lower fan sends out air toward the air inlet filter, the part of the tube with the pipe opening is located inside the lower air duct cover, so that the air outside the lower air duct cover can flow into the lower air duct cover through the air outlet filter and the pipe opening, so that there is enough air in the lower air duct cover to enter and blow toward the air inlet filter, so that large air flow is not likely to occur at the cooler.

[0015] Optionally, the lower air guide cover is fixedly connected to an outer sleeve plate located on the side of the filter screen inside the cover away from the lower fan, and a sealing plate capable of sealing the lower air guide cover is slidably connected inside the outer sleeve plate, and the outer sleeve plate is provided with a sealing plate motor capable of moving the sealing plate.

[0016] By adopting the above technical solution, when the lower fan blows out airflow toward the air inlet filter, the sealing plate can close the lower air guide cover, so that the cooler is not easily affected by the airflow.

[0017] Optionally, the lower air guide hood is provided with a hood end tube connected to one side of the lower fan, the end of the hood end tube is tightly and slidingly connected to a tube end plate that can close the hood end tube, the hood end tube is provided with a tube end plate motor that can drive the tube end plate to rotate, the tube end plate is connected to a plate-tube joint that can be connected to the hood end tube, the tube end plate is inclined toward the side of the lower fan, and the lowest point of the inclined surface of the tube end plate is the position where the plate-tube joint is connected to the tube end plate.

[0018] By adopting the above technical solution, when the lower fan blows out airflow toward the air inlet filter, the pipe end plate rotates, and the airflow is sent out through the plate-pipe joint. The plate-pipe joint with a smaller inner diameter can be connected to the external pipe, which not only facilitates the temporary connection of the small pipe to the air compressor chassis, but also enables a certain amount of turbulence to be generated in the hood end pipe with a larger inner diameter, so that the air inlet filter can be better cleaned.

[0019] Optionally, an upper air duct is tightly attached to the side of the cooler away from the lower air duct, and an upper fan is provided on the side of the upper air duct close to the cooler to send air from the cooler toward the upper air duct out of the upper air duct.

[0020] By adopting the above technical solution, when the lower fan blows air toward the cooler, the upper fan operates synchronously to accelerate the gas flow at the cooler appropriately, and better gas flow effect can also be obtained on the side of the cooler away from the lower fan, thereby improving the heat dissipation effect of the cooler.

[0021] Optionally, a reversing sleeve is provided at one end of the upper air guide cover away from the cooler, and the reversing sleeve is provided with a sleeve connected to the upper air guide cover, and a portion of the sleeve located in the reversing sleeve is curved.

[0022] By adopting the above technical solution, the airflow blown by the upper fan can be sent out through the sleeve, so that external impurities are not easy to fall directly into the upper air duct cover, and the side of the cooler facing the upper air duct cover is not easy to accumulate a lot of impurities.

[0023] Optionally, a blade frame is provided on the side of the upper air guide cover and the lower air guide cover close to the cooler, each blade frame is rotatably connected to a group of air guide blades, and the upper air guide cover and the lower air guide cover are provided with blade motors for driving the air guide blades to rotate.

[0024] By adopting the above technical solution, both the lower fan and the upper fan are axial flow fans, the air flow in the center is small, almost non-existent, and the rotation of the guide blades can cause a certain change in the direction of the air flow passing through the cooler, so that the part of the cooler facing the center of the lower fan or the upper fan can also be better cooled.

[0025] Optionally, the two groups of air guide blades rotate in the same direction and at the same angle.

[0026] By adopting the above technical solution, the airflow directions of the two sets of guide blades are similar, so that the airflow directions on both sides of the cooler tend to be consistent without any angle, so that the airflow can take away the heat of the cooler faster, which helps to improve the heat dissipation effect of the cooler.

[0027] In summary, the present application includes at least one of the following beneficial effects:

[0028] 1. Compared with the arrangement in which the air inlet filter is arranged inside the lower air duct, the air inlet filter with a smaller mesh size is arranged outside the lower air duct and surrounds the lower fan, so that the area of ​​the lower air duct is larger, which is conducive to the maximum air flow entering the lower air duct being less affected. The arrangement of the filter inside the hood can filter and block some large-volume waste chips that may be generated during the long-term operation of the lower fan, so as to further protect the cooler and prevent the normal operation of the cooler from being greatly affected.

[0029] 2. When the lower fan blows air toward the cooler, the upper fan operates synchronously to speed up the air flow at the cooler appropriately, and a better air flow effect can also be obtained on the side of the cooler away from the lower fan, thereby improving the heat dissipation effect of the cooler. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the main structure of the first embodiment of the present application;

[0031] Figure 2 is a schematic cross-sectional structural diagram of the lower air guide cover of the first embodiment;

[0032] Figure 3 It is a schematic cross-sectional structural diagram of the lower air guide cover, the upper air guide cover, the reversing sleeve and the cover end pipe of the second embodiment.

[0033] Explanation of the reference numerals: 1. cooler; 2. lower air guide hood; 3. lower fan; 31. blade frame; 32. air guide blade; 33. blade motor; 34. connecting plate; 4. filter screen inside the hood; 41. sealing plate motor; 42. upper air guide hood; 43. upper fan; 44. reversing sleeve; 45. sleeve; 46. hood end pipe; 47. pipe end plate; 48. plate-pipe joint; 49. pipe end plate motor; 5. air inlet filter screen; 51. overlap; 52. rotating motor; 53. base pipe; 54. pipe-moving electric cylinder; 55. plugging piece; 56. air outlet filter screen; 57. pipe mouth; 58. outer sleeve plate; 59. sealing plate. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings.

[0035] Embodiment 1:

[0036] Embodiment 1 of the present application discloses a cooling device for an air compressor, referring to Figure 1 , including a cooler 1 installed horizontally on the upper part of the air compressor case. The cooler 1 can be an aluminum tube-fin cooler. A lower air guide cover 2 is tightly attached to the lower surface of the cooler 1. A lower fan 3 is detachably connected to the horizontal end surface of the bottom end of the lower air guide cover 2 by bolts. The lower fan 3 can be an axial flow fan. An opening is provided at the position of the cooler 1 on the outer surface of the upper surface of the air compressor case, so that the airflow blown by the lower fan 3 toward the cooler 1 can flow to the outside of the air compressor case to take away the heat of the compressed air and coolant in the cooler in time.

[0037] Reference Figure 1 and Figure 2 The bottom end surface of the lower air guide cover 2 is detachably connected with an air inlet filter 5 by bolts. The air inlet filter 5 can be a hollow rectangular structure surrounded by four vertical surfaces and one horizontal surface, so that the air inlet filter 5 can have a larger surface area, so that when the mesh number of the air inlet filter 5 is large, enough air can flow into the lower air guide cover 2 from the air inlet filter 5. The lower air guide cover 2 is detachably connected with a horizontal inner filter 4 by bolts. The mesh number of the inner filter 4 is smaller than that of the air inlet filter 5, so that the inner filter 4 only needs to block the larger volume of debris that may fly out with the airflow due to wear during the long-term operation of the lower fan 3.

[0038] Reference Figure 2The upper parts of the two vertical sides of the lower air guide cover 2 are fixedly connected with horizontal connecting plates 34, and the periphery of the cooler 1 is detachably connected to the connecting plates 34 by bolts. The two connecting plates 34 are fixedly connected with an L-shaped overlap 51 on the side away from each other. The vertical section of the overlap 51 is connected to the connecting plate 34, and the horizontal section of the overlap 51 is located at the upper part of the vertical section of the overlap 51. The horizontal sections of the two overlaps 51 are far away from each other, and the horizontal sections of the overlap 51 can be plugged into the air compressor chassis in the horizontal direction, so that the lower air guide cover 2 can be disassembled more conveniently. After the horizontal section of the overlap 51 is moved into place, the horizontal section of the overlap 51 is connected and fixed to the inside of the air compressor chassis with bolts.

[0039] The implementation principle of the cooling device of an air compressor in the first embodiment of the present application is as follows: the air first passes through the air inlet filter 5 and then is continuously sent into the lower air guide cover 2 through the lower fan 3 and blown toward the cooler 1, so that the heat of the cooler 1 is taken away by the airflow.

[0040] Embodiment 2:

[0041] Embodiment 2 of the present application discloses a cooling device for an air compressor, referring to Figure 3 , which is different from the first embodiment in that the peripheral frame of the lower fan 3 is rotatably connected to the inner wall of the lower air duct 2, and the rotation axis of the lower fan 3 is horizontal, so that the lower fan 3 can be turned to face the air inlet filter 5. The outer wall of the lower air duct 2 is detachably connected to a rotating motor 52, and the output shaft of the rotating motor 52 is coaxially fixedly connected to the rotation point of the peripheral frame of the lower fan 3.

[0042] Reference Figure 3 , the vertical outer walls on both sides of the lower air guide cover 2 are fixedly connected with horizontal outer plates 58, the outer plates 58 are located between the cooler 1 and the filter screen 4 in the cover, and the outer plates 58 are slidably connected with a sealing plate 59 that can block the lower air guide cover 2 in the horizontal direction, so that when the lower fan 3 sends air toward the air inlet filter screen 5, the two sealing plates 59 can be close to and abut against each other, so that the cooler 1 is not easily affected. The outer plate 58 is detachably connected to the sealing plate motor 41 by bolts, and the output shaft of the sealing plate motor 41 can be coaxially fixedly threadedly connected to the lead screw of the sealing plate 59, so that the sealing plate 59 can move smoothly.

[0043] Reference Figure 3A base pipe 53 is slidably connected to the wall thickness of the lower air guide cover 2 in the horizontal direction. The base pipe 53 can be set on several of the four vertical sides of the lower air guide cover 2 as needed. The base pipe 53 is horizontal and is located between the sealing plate 59 and the filter screen 4 in the cover. The outer wall of the lower air guide cover 2 is detachably connected to a pipe-moving electric cylinder 54, and the power rod of the pipe-moving electric cylinder 54 is detachably connected to the upper end of the base pipe 53. A blocking piece 55 is fixedly connected to the inner wall of one end of the base pipe 53 close to the center of the lower air guide cover 2. The blocking piece 55 blocks the base pipe 53. An air outlet filter 56 is fixedly connected to one end of the base pipe 53 away from the blocking piece 55. The mesh number of the air outlet filter 56 can be similar to the mesh number of the air inlet filter 5. A pipe opening 57 is opened on the pipe body of the base pipe 53 located between the air outlet filter 56 and the blocking piece 55. When the lower fan 3 blows air toward the cooler, the pipe opening 57 is located outside the lower air duct 2, and the airflow in the lower air duct 2 is not easily blown out of the lower air duct 2 from the base pipe 53. When the lower fan 3 blows air toward the air inlet filter 5, the pipe opening 57 is located inside the lower air duct 2, so that the air passing through the air outlet filter 56 can enter the lower air duct 2 through the pipe opening 57, so that the air pressure inside and outside the lower air duct 2 is balanced.

[0044] Reference Figure 3 The vertical outer wall at the bottom end of the lower air guide cover 2 is detachably connected to a vertical cover end tube 46 through bolts, the air inlet filter 5 is located in the cover end tube 46, and the bottom end surface of the cover end tube 46 is tightly fitted and slidably connected to a tube end plate 47. The cover end tube 46 is detachably connected to a tube end plate motor 49, and the output shaft of the tube end plate motor 49 is coaxially fixedly connected to the rotation point on the upper surface of the tube end plate 47, so that the tube end plate 47 can close or open the cover end tube 46. The bottom surface of the tube end plate 47 is fixedly connected and connected to a plate pipe joint 48, which can be connected to an external small-diameter hose, so that when the lower fan 3 sends airflow toward the air inlet filter 5, the air with a large amount of impurities can be sent out through the external pipeline, so that the air compressor chassis is not easily affected. The tube end plate 47 is inclined toward the side of the lower fan 3, and the lowest point of the inclined surface of the tube end plate 47 is the position where the plate pipe joint 48 is connected to the tube end plate 47, so that the airflow can flow better along the inclined surface of the tube end plate 47, making it difficult for impurities to accumulate on the inclined surface of the tube end plate 47.

[0045] Reference Figure 3The upper surface of the cooler 1 can be fitted with an upper air duct 42 that is detachably connected to the air compressor chassis. The upper air duct 42 can be set inside or outside the air compressor chassis according to actual conditions. The inner wall of the upper air duct 42 near the cooler 1 is detachably connected to an upper fan 43 through bolts. The upper fan 43 blows air directly above itself, so that the air on the side of the cooler 1 away from the lower fan 3 flows upward. The upper end of the upper air duct 42 can be tightly and detachably connected to a reversing sleeve 44. The vertical side or top surface of the reversing sleeve 44 is provided with a plurality of sleeves 45 connected to the upper air duct 42. The portion of the sleeve 45 located in the reversing sleeve 44 is arranged in an arc shape, so that it is difficult for external impurities to enter the upper air duct 42 through the sleeve 45.

[0046] Reference Figure 3 , the upper air guide cover 42 and the lower air guide cover 2 are both detachably connected with a horizontal blade frame 31, the high blade frame 31 is located between the cooler 1 and the upper fan 43, and the low blade frame 31 is located between the cooler 1 and the sealing plate 59, and the two blade frames 31 are rotatably connected with a group of several air guide blades 32, and the upper air guide cover 42 and the lower air guide cover 2 are both detachably connected with a blade motor 33, and meshing gears or sprockets and chains can be set in the blade frame 31, so that a blade motor 33 can drive a group of air guide blades 32 to rotate in the same direction, and the opening area of ​​the upper air guide cover 42 and the lower air guide cover 2 facing the cooler 1 is larger than the area of ​​the cooler 1 for air to flow through for heat dissipation, so that the air guide blades 32 can be rotated and adjusted, so that there can be sufficient airflow in the heat dissipation area of ​​the cooler 1 at the position opposite to the upper fan 43 or the center of the lower fan 3, so that there can be relatively sufficient airflow in at least one place in the upper or lower part of the heat dissipation area of ​​the cooler 1. Furthermore, the two groups of guide blades 32 rotate in the same direction, and the angles of the two groups of guide blades 32 remain close, so that the air flow velocity at most positions of the heat dissipation area of ​​the cooler 1 is faster, so that the heat can be taken away faster.

[0047] The implementation principle of the cooling device of an air compressor in the second embodiment of the present application is as follows: when the space inside and outside the lower air guide cover 2 and the air compressor chassis is large enough, the lower fan 3 can rotate to clean the air inlet filter 5, and an upper air guide cover 42 and an upper fan 43 can be additionally provided to cooperate with the lower fan 3 to enhance the heat dissipation effect of the cooler 1.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cooling device for an air compressor, comprising a cooler (1) provided in an air compressor chassis and configured to dissipate heat and cool compressed air and coolant, a lower air guide cover (2) closely fitted to the cooler, and a lower fan (3) provided in the lower air guide cover (2) and configured to blow air toward the cooler (1), characterized in that: The lower air guide hood (2) is provided with an inner filter screen (4) capable of filtering the air flow blowing toward the cooler (1); the side of the lower fan (3) away from the cooler (1) is surrounded by an air inlet filter screen (5) for filtering the gas entering the lower fan (3); the mesh number of the air inlet filter screen (5) is greater than the mesh number of the inner filter screen (4); The lower fan (3) is rotatably connected to the lower air guide cover (2) so that the lower fan (3) can blow air toward the air inlet filter (5), and the lower air guide cover (2) is provided with a rotating motor (52) capable of driving the lower fan (3) to rotate; The lower air guide cover (2) is slidably connected to a base tube (53) that can be exposed outside the lower air guide cover (2), the base tube (53) is fixedly connected to a plugging piece (55) that can block the base tube (53), the base tube (53) is fixedly connected to an air outlet filter (56) that can filter the gas passing through the base tube (53), the air outlet filter (56) is further away from the center of the lower air guide cover (2) than the plugging piece (55), the base tube (53) is provided with a pipe opening (57) located between the plugging piece (55) and the air outlet filter (56), and the lower air guide cover (2) is provided with a pipe moving electric cylinder (54) that can drive the base tube (53) to move along the direction of the connection between the plugging piece (55) and the air outlet filter (56); The lower air guide cover (2) is fixedly connected to an outer plate (58) located on the side of the filter screen (4) in the cover away from the lower fan (3), and a sealing plate (59) capable of sealing the lower air guide cover (2) is slidably connected to the outer plate (58). The outer plate (58) is provided with a sealing plate motor (41) capable of moving the sealing plate (59).

2. The cooling device for an air compressor according to claim 1, characterized in that: The lower air guide cover (2) is fixedly connected to a ledge (51) detachably connected to the air compressor chassis, and the filter screen (4) inside the cover and the air inlet filter screen (5) are both detachably connected to the lower air guide cover (2).

3. The cooling device for an air compressor according to claim 1, characterized in that: The lower air guide cover (2) is provided with a cover end pipe (46) on one side of the lower fan (3), and the end of the cover end pipe (46) is tightly slidably connected to a pipe end plate (47) capable of closing the cover end pipe (46). The cover end pipe (46) is provided with a pipe end plate motor (49) capable of driving the pipe end plate (47) to rotate. The pipe end plate (47) is connected to a plate pipe joint (48) capable of being connected to the cover end pipe (46). The pipe end plate (47) is inclined toward one side of the lower fan (3), and the lowest point of the inclined surface of the pipe end plate (47) is the position where the plate pipe joint (48) is connected to the pipe end plate (47).

4. The cooling device for an air compressor according to claim 1, characterized in that: An upper air guide cover (42) is tightly fitted on the side of the cooler (1) away from the lower air guide cover (2), and an upper fan (43) is provided on the side of the upper air guide cover (42) close to the cooler (1) to send air from the cooler (1) toward the upper air guide cover (42) out of the upper air guide cover (42).

5. The cooling device for an air compressor according to claim 4, characterized in that: A reversing sleeve (44) is provided at one end of the upper air guide cover (42) away from the cooler (1). The reversing sleeve (44) is provided with a sleeve (45) connected to the upper air guide cover (42). The portion of the sleeve (45) located in the reversing sleeve (44) is curved.

6. The cooling device for an air compressor according to claim 4, characterized in that: The upper air guide cover (42) and the lower air guide cover (2) are both provided with a blade frame (31) on one side close to the cooler (1), and each blade frame (31) is rotatably connected to a group of air guide blades (32). The upper air guide cover (42) and the lower air guide cover (2) are both provided with a blade motor (33) for driving the air guide blades (32) to rotate.

7. The cooling device for an air compressor according to claim 6, characterized in that: The two groups of air guide blades (32) rotate in the same direction and at the same angle.

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