Energy-saving heat exchange mechanism for air compressor

Abstract

The invention relates to the field of air compressors, in particular to an energy-saving heat exchange mechanism for an air compressor, and the energy-saving heat exchange mechanism is suitable for an air compressor body and comprises a medium channel arranged in a shaft; the medium channel comprises first channels formed in the front end shaft and the rear end shaft respectively, a plurality of first holes are formed in the outer surface of the front end shaft and the outer surface of the rear end shaft, and the first holes extend into the first channels in the radial direction. When the cooling oil flows through the medium channel, the cooling oil with the lower temperature exchanges heat with the shaft to take away heat in the shaft, the oil pump supplies oil continuously, the cooling oil can flow through the medium channel continuously and take away heat in the shaft continuously, the temperature of the shaft is controlled within the normal operation range of the shaft, normal operation of the shaft is kept, and the service life of the shaft is prolonged.

Description

Technical Field

[0001] This invention relates to the field of air compressors, specifically an energy-saving heat exchange mechanism for air compressors. Background Technology

[0002] An air compressor is a device that converts mechanical energy into compressed air pressure energy. It generates a lot of heat during long-term operation. When the temperature reaches a threshold, the heat cannot be dissipated in time, and the machine needs to be stopped to cool down. This is especially true during high-pressure operation, where the temperature rise is more pronounced. The internal components operate at high temperatures and are prone to deformation. Shaft components, in particular, will deform when operating at high temperatures for a long time. At this point, the dynamic balance of the shaft is disrupted, and the whole machine will start to vibrate. If operation continues, the vibration will continue to amplify, leading to fatigue cracking of the bearing housing and breakage of the outer casing, causing the air compressor to be directly damaged and scrapped, making it unusable.

[0003] Therefore, an energy-saving heat exchange mechanism for air compressors is proposed to address the above problems. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an energy-saving heat exchange mechanism for an air compressor, which is adapted to the air compressor body, wherein the air compressor body is provided with a crankshaft and a piston; the energy-saving heat exchange mechanism includes a medium channel disposed inside the crankshaft; The medium channel includes a No. 1 channel respectively opened inside the front and rear shafts of the crankshaft. Multiple No. 1 holes are opened on the outer surfaces of the front and rear shafts, and the No. 1 holes extend radially into the No. 1 channel. The crankshaft has a No. 2 channel inside the crank arm, which is connected to the adjacent No. 1 channel. The crankshaft has a No. 3 channel inside the connecting rod shaft diameter, which is connected to the adjacent No. 2 channel. The crankshaft has a No. 4 channel inside the crankshaft shaft diameter, which is connected to the adjacent No. 3 channel. The outer surface of the crankshaft shaft diameter has multiple No. 2 holes, which extend radially into the No. 4 channel. A first hollow ring is fitted on the outer ring of the front and rear shafts. The inner ring of the first hollow ring is connected to a first hole, and a first tube is connected to the first hollow ring. A second hollow ring is fitted on the outer ring of the crankshaft diameter. The inner ring of the second hollow ring is connected to a second hole, and a second tube is connected to the second hollow ring.

[0006] Preferably, the third channel is split in the middle into a third liquid inlet channel and a third liquid outlet channel; the outer ring of the connecting rod shaft is respectively circumferentially arrayed with a third hole and a fourth hole, the third hole extending radially into the third liquid inlet channel and the fourth hole extending radially into the third liquid outlet channel; The crankshaft has symmetrical through holes in the middle of the bearing shell, which are respectively opposite to holes No. 3 and No. 4; the connecting rod to which the piston is connected has inlet pipes and outlet pipes symmetrically distributed on both sides. The inlet end of the inlet pipe extends to the bottom of the connecting rod, and the outlet end of the inlet pipe extends to the top of the connecting rod. The outlet end of the outlet pipe extends to the bottom of the connecting rod, and the inlet end of the outlet pipe extends to the top of the connecting rod. The piston is symmetrically provided with hollow hinge blocks, and a hollow shaft is rotatably connected inside the hinge block. The hollow shaft is fixed to the top of the connecting rod at the middle position, and the two sides of the hollow shaft are respectively connected to the inlet end of the inlet pipe and the inlet end of the outlet pipe. Cooling channels are formed inside the piston sidewall, and the inlet and outlet of the cooling channels are respectively connected to the interior of the hinge block.

[0007] Preferably, the cooling channel is arranged in a spiral shape.

[0008] Preferably, each of the bearing bushes has an overflow channel on its inner and outer surfaces, and the overflow channel is arranged to coincide with the through hole.

[0009] Preferably, the first channel passes through the ends of the front end shaft and the rear end shaft respectively, and the ends of the front end shaft and the rear end shaft are provided with a first sealing bolt; The second channel is opened at an angle and extends through the outer arc surface of the crank, and the outer arc surface of the crank is provided with a second sealing bolt for sealing the second channel; The No. 3 channel is opened along the connecting rod shaft diameter axis and extends to the outer wall of the crank, and the No. 3 sealing bolt is provided on the outer wall of the crank to block the No. 3 channel; The fourth channel is opened along the crankshaft diameter axis and extends to the outer wall of the crank, and the outer wall of the crank is provided with a fourth sealing bolt to block the fourth channel.

[0010] Preferably, the fourth channel is disconnected in the middle, and two sets of second holes are arranged in a circumferential array on the outer surface of the crankshaft diameter, with each set of second holes extending radially into the fourth channel.

[0011] Preferably, an oil pump assembly is provided between the first pipe and the adjacent second pipe, and the oil pump assembly includes a cylinder body, the bottom of the cylinder body is connected to the second pipe, the top of the cylinder body is connected to the first pipe, a piston rod is provided inside the cylinder body, the top of the piston rod extends upward to the outside of the cylinder body, and is fixedly connected to a U-shaped support frame, and a roller body is rotatably connected inside the support frame; a flywheel is provided on the outer ring of the front end shaft and the rear end shaft of the crankshaft, and an arc-shaped protrusion is provided on the outer surface of the flywheel, which can intermittently squeeze the roller body.

[0012] Preferably, a water-cooling assembly is provided between the second pipe and the cylinder body. The water-cooling assembly includes a water tank, on which an inlet pipe and a drain pipe are connected. The second pipe is coiled in the water tank in a snake-like shape, with upper and lower layers.

[0013] Preferably, multiple mounting grooves are evenly formed at the edge of the flywheel, and protrusions are installed in the mounting grooves.

[0014] Preferably, the first pipe is connected to a branch pipe, and the outlet end of the branch pipe extends into the support frame.

[0015] The advantages of this invention are: 1. In this invention, the designed cooling unit allows the cooling oil, which is at a lower temperature, to exchange heat with the shaft as it flows through the medium channel, carrying away the heat inside the shaft. Furthermore, the oil pump continuously supplies oil, ensuring that the cooling oil flows continuously through the medium channel, continuously carrying away the heat inside the shaft, thus controlling the shaft temperature within its normal operating range, maintaining the shaft's normal operation, and extending its service life.

[0016] 2. In this invention, overflow channels are provided on the inner and outer surfaces of the bearing bush. When the inlet pipe and the through hole are misaligned, cooling oil is continuously pumped in. At this time, the cooling oil cannot be injected into the inlet pipe, and the cooling oil will flow out along the overflow channel and into the surface of the bearing bush. This can achieve cooling of the bearing bush itself. At the same time, the cooling oil flowing into the surface of the bearing bush can lubricate and protect the relative rotational contact surface between the bearing bush and the crankshaft, making up for the parts that the lubricating oil cannot reach, and improving the protection effect on the bearing bush and the shaft. Attached Figure Description

[0017] Figure 1 This is a first-view perspective perspective view of the energy-saving heat exchange mechanism for the air compressor in this invention; Figure 2 This is a second-view perspective perspective view of the energy-saving heat exchange mechanism for the air compressor in this invention; Figure 3 This is a front view of the energy-saving heat exchange mechanism for the air compressor in this invention; Figure 4 This is a side view of the energy-saving heat exchange mechanism for the air compressor in this invention; Figure 5 This is a cross-sectional view of the crankshaft in this invention; Figure 6 This is a perspective view of the piston in this invention; Figure 7 This is a cross-sectional view of the piston in this invention; Figure 8 This is a perspective view of the bearing bush in this invention; Figure 9 This is a perspective view of the flywheel in this invention.

[0018] In the diagram: 1. Crankshaft; 2. Piston; 3. Front shaft; 4. Rear shaft; 5. Channel 1; 6. Hole 1; 7. Crankshaft; 8. Channel 2; 9. Connecting rod shaft diameter; 10. Channel 3; 11. Crankshaft shaft diameter; 12. Channel 4; 13. Hollow ring 1; 14. Tube 1; 15. Hollow ring 2; 16. Hole 2; 17. Tube 2; 18. Liquid inlet channel 3; 19. Liquid outlet channel 3; 20. Hole 3; 21. Hole 4; 22. Bearing shell; 23. 24. Through hole; 25. Connecting rod; 26. Liquid inlet pipe; 27. Liquid outlet pipe; 28. Hinge block; 29. ​​Hollow shaft; 30. Cooling channel; 31. Overflow channel; 32. No. 1 sealing bolt; 33. No. 2 sealing bolt; 34. No. 4 sealing bolt; 35. Cylinder block; 36. Piston rod; 37. Support frame; 38. Roller body; 39. Flywheel; 40. Protrusion; 41. Water tank; 42. Water inlet pipe; 43. Drain pipe; 44. Mounting groove; 45. Branch pipe. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Reference Figure 1 - Figure 6 An energy-saving heat exchange mechanism for an air compressor is disclosed, adapted to the air compressor body, which contains a crankshaft 1 and a piston 2. The energy-saving heat exchange mechanism includes a medium channel disposed inside the crankshaft 1. The medium channel includes a first channel 5 respectively opened inside the front end shaft 3 and the rear end shaft 4 of the crankshaft 1. Multiple first holes 6 are opened on the outer surfaces of both the front end shaft 3 and the rear end shaft 4, extending radially into the first channel 5. A second channel 8 is opened inside the crank 7 of the crankshaft 1, and the second channel 8 is connected to the adjacent first channel 5. A third channel 10 is opened inside the connecting rod shaft diameter 9 of the crankshaft 1, and the third channel 10 is connected to... The crankshaft 1 has a second channel 8 nearby; a fourth channel 12 is opened inside the crankshaft diameter 11 of the crankshaft 1, which connects to the third channel 10 nearby, and multiple second holes 16 are opened on the outer surface of the crankshaft diameter 11, which extend radially into the fourth channel 12; a first hollow ring 13 is fitted on the outer ring of the front shaft 3 and the rear shaft 4, the inner ring of the first hollow ring 13 is connected to the first hole 6, and a first tube 14 is connected to the first hollow ring 13; a second hollow ring 15 is fitted on the outer ring of the crankshaft diameter 11, the inner ring of the second hollow ring 15 is connected to the second hole 16, and a second tube 17 is connected to the second hollow ring 15; In this embodiment of the invention, the designed energy-saving heat exchange mechanism for an air compressor is a mechanism for cooling a piston-type air compressor, specifically for cooling the crankshaft 1 of the piston-type air compressor. A cooling unit is provided, with a medium channel inside the crankshaft 1. The medium flowing within the medium channel can be cooling oil. An external oil pump injects the cooling oil into the first hollow ring 13 along the first pipe 14. The inner rings of the two first hollow rings 13 rotate on the outer rings of the front end shaft 3 and the rear end shaft 4, respectively, and the inner rings of the first hollow rings 13 are connected to the first hole 6. The cooling oil flows along the direction of the medium channel and flows out from the second hole 16, flowing into the second hollow ring 1. Within 5, the cooling oil is finally discharged through pipe 17 on hollow ring 15. Specifically, the cooling oil flows sequentially through pipe 14, hollow ring 13, hole 6, channel 5, channel 8, channel 3, channel 10, channel 4, hole 16, hollow ring 15, and pipe 17. When the cooling oil flows through the medium channel, the cooler cooling oil exchanges heat with crankshaft 1, carrying away the heat inside crankshaft 1. With the oil pump continuously supplying oil, the cooling oil can continuously flow through the medium channel, continuously carrying away the heat inside crankshaft 1, keeping the temperature of crankshaft 1 within its normal operating range, maintaining the normal operation of crankshaft 1, and extending its service life.

[0021] Reference Figure 1 - Figure 6 The third channel 10 is split in the middle into a third inlet channel 18 and a third outlet channel 19; the outer ring of the connecting rod shaft diameter 9 has a third hole 20 and a fourth hole 21 arranged in a circular array, with the third hole 20 extending radially into the third inlet channel 18 and the fourth hole 21 extending radially into the third outlet channel 19; the bearing 22 of the crankshaft 1 has symmetrical through holes 23 at the middle position, which are respectively opposite to the third hole 20 and the fourth hole 21; the connecting rod 24 connected to the piston 2 has symmetrically distributed inlet pipes 25 and outlet pipes 26 on both sides; the inlet end of the inlet pipe 25 extends to the connecting rod 2 At the bottom of piston 2, the outlet end of inlet pipe 25 extends to the top of connecting rod 24; the outlet end of outlet pipe 26 extends to the bottom of connecting rod 24, and the inlet end of outlet pipe 26 extends to the top of connecting rod 24; hollow hinge blocks 27 are symmetrically arranged inside piston 2, and a hollow shaft 28 is rotatably connected inside hinge block 27. The hollow shaft 28 is fixed to the top of connecting rod 24 at the middle position, and the two sides of the hollow shaft 28 are respectively connected to the inlet end of inlet pipe 25 and the inlet end of outlet pipe 26; a cooling channel 29 is opened inside the side wall of piston 2, and the inlet and outlet of cooling channel 29 are respectively connected to the inside of hinge block 27; When the air compressor is running, not only will the crankshaft 1 heat up, but the piston 2 inside the air compressor will also heat up. Similarly, as the piston 2 continues to run, its temperature will continue to rise, and if it is not cooled down in time, problems will occur. For example, when the temperature of piston 2 exceeds 220°C, the lubricating oil will coke and form a varnish film, losing lubrication. In severe cases, scratches may occur. Therefore, it is necessary to cool down piston 2. The specific cooling measures are as follows: an inlet pipe 25 and an outlet pipe 26 are installed. The inlet pipe 25 is connected to the third inlet channel 18, and the outlet pipe 26 is connected to the third outlet channel 19. At this time, the cooling oil flows sequentially through the first pipe 14 and the first air compressor. The components include: a core ring 13, hole 6, channel 5, channel 8, liquid inlet channel 18, hole 20, through hole 23 opposite to hole 20, liquid inlet pipe 25, hollow shaft 28, hollow hinge block 27, cooling channel 29, hollow hinge block 27, hollow shaft 28, liquid outlet pipe 26, through hole 23 opposite to hole 21, hole 21, liquid outlet channel 19, channel 12, hole 16, hollow ring 15, and pipe 17. When the cooling oil flows through the cooling channel 29, it carries away the heat of the piston 2 itself, thereby achieving cooling protection for the piston 2 and extending its normal operating time.

[0022] Reference Figure 1 - Figure 6 The cooling channel 29 is arranged in a spiral shape; the spiral arrangement of the cooling channel 29 increases the effective heat exchange area between the cooling oil and the piston 2, improves the heat exchange efficiency, and further optimizes the cooling efficiency of the piston 2.

[0023] Reference Figure 5 - Figure 8 Each bearing bush 22 has an overflow channel 30 on its inner and outer surfaces, which is aligned with the through hole 23. When the inlet pipe 25 is misaligned with the through hole 23, the overflow channel 30 on the inner and outer surfaces of the bearing bush 22 allows for continuous pumping of cooling oil. In this case, the cooling oil cannot be injected into the inlet pipe 25 and will flow out along the overflow channel 30 and into the surface of the bearing bush 22. This not only cools the bearing bush 22 itself, but also lubricates and protects the relative rotational contact surface between the bearing bush 22 and the crankshaft 1, compensating for areas that the lubricating oil cannot reach and improving the protection of the bearing bush 22 and the crankshaft 1.

[0024] Reference Figure 5The first channel 5 passes through the ends of the front shaft 3 and the rear shaft 4, and the ends of the front shaft 3 and the rear shaft 4 are provided with a first sealing bolt 31; the second channel 8 is opened at an angle and passes through the outer arc surface of the crank 7, and the outer arc surface of the crank 7 is provided with a second sealing bolt 32 for sealing the second channel 8; the third channel 10 is opened along the axis of the connecting rod shaft diameter 9 and extends to the outer wall of the crank 7, and the outer wall of the crank 7 is provided with a third sealing bolt 33 for sealing the third channel 10; the fourth channel 12 is opened along the axis of the crank shaft diameter 11 and extends to the outer wall of the crank 7, and the outer wall of the crank 7 is provided with a fourth sealing bolt 34 for sealing the fourth channel 12. Considering the difficulty of machining the medium channel inside crankshaft 1, the medium channel is machined in sections, specifically, as follows: Figure 3 and Figure 5 As shown, holes are drilled along the axes of the front shaft 3 and the rear shaft 4 to form channel 5, which is then sealed at the ends of the front shaft 3 and the rear shaft 4 using sealing bolt 31. Channel 8 is drilled at an angle and connected to channel 5, and then sealed with sealing bolt 32. Channel 10 is drilled along the axis of the connecting rod shaft diameter 9 and sealed with sealing bolt 33. Channel 12 is drilled along the axis of the crankshaft shaft diameter 11 and sealed with sealing bolt 34. At this point, channel 5, channel 8, channel 10, and channel 12 are connected in series to form a complete medium channel.

[0025] Reference Figure 1 - Figure 5 The fourth channel 12 is disconnected in the middle, and two sets of second holes 16 are arranged in a circumferential array on the outer surface of the crankshaft diameter 11, with each set of second holes 16 extending radially into the fourth channel 12. Channel 4, 12, is interrupted in the middle and has two sets of No. 2 holes, 16. Each set of No. 2 holes, 16, has a No. 2 hollow ring, 15. Figure 3 and Figure 5 As shown, a first hollow ring 13 is set at each end of the crankshaft 1, and two second hollow rings 15 are set in the middle part of the crankshaft 1. The second hollow ring 15 on the left side of the crankshaft 1 and the first hollow ring 13 cooperate to form a cooling oil flow channel, and the second hollow ring 15 on the right side of the crankshaft 1 and the first hollow ring 13 cooperate to form another cooling oil flow channel. The two cooling oil flow channels accelerate the flow of cooling oil and improve the heat exchange efficiency between the cooling oil and the crankshaft 1.

[0026] Reference Figure 1 - Figure 4An oil pump assembly is provided between the first pipe 14 and the adjacent second pipe 17. The oil pump assembly includes a cylinder 35. The bottom of the cylinder 35 is connected to the second pipe 17, and the top of the cylinder 35 is connected to the first pipe 14. A piston rod 36 is provided inside the cylinder 35. The top of the piston rod 36 extends upward to the outside of the cylinder 35 and is fixedly connected to a U-shaped support frame 37. A roller 38 is rotatably connected inside the support frame 37. A flywheel 39 is provided on the outer ring of the front end shaft 3 and the rear end shaft 4 of the crankshaft 1. An arc-shaped protrusion 40 is provided on the outer surface of the flywheel 39. The protrusion 40 can intermittently squeeze the roller 38. The oil pump assembly is designed to replace an external oil pump. Specifically, the crankshaft 1 drives the flywheel 39 to rotate. The flywheel 39 has a protrusion 40 on its outer ring. The protrusion 40 intermittently squeezes the roller 38 and rubs the roller 38 to rotate. The roller 38 squeezes the support frame 37 downward, and the support frame 37 squeezes the piston rod 36 downward. The piston rod 36 pumps the cooling oil in the cylinder 35 into the first pipe 14. When the protrusion does not squeeze the roller 38, the piston rod 36 moves upward under the elastic force of the spring it is connected to, and draws the cooling oil in the second pipe 17 into the cylinder 35. The second pipe 17 is located outside the cylinder, and the cooling oil is cooled down in the second pipe 17. The oil pump assembly reduces the investment in oil pump equipment and lowers costs. In terms of response, it has a compact structure and fast response. Cooling oil can be injected while the crankshaft 1 is running, without the need to consider the start and stop of the oil pump equipment.

[0027] Reference Figure 1 - Figure 4 A water-cooling assembly is provided between the second pipe 17 and the cylinder 35. The water-cooling assembly includes a water tank 41, on which an inlet pipe 42 and a drain pipe 43 are connected. The second pipe 17 is coiled in the water tank 41 in a snake shape, with upper and lower layers. The water tank 41 is used to cool the cooling oil in the second pipe 17. Specifically, when the cooling oil passes through the crankshaft 1, its temperature rises, and then it flows out through the second pipe 17. The second pipe 17 is located in the water tank 41. The water inlet pipe 42 continuously injects cooling water into the water tank 41. The cooling water continuously cools the second pipe 17, quickly cooling the cooling oil to the preset temperature, so that the subsequent cooling oil can fully reduce the temperature of the crankshaft 1.

[0028] Reference Figure 9 The flywheel 39 has multiple mounting grooves 44 evenly spaced along its edge, and protrusions 40 are installed in the mounting grooves 44. The flywheel 39 is provided with multiple mounting slots 44, which can accommodate more protrusions 40. With the crankshaft 1 speed remaining constant, installing more protrusions 40 allows for the injection of more cooling oil into the medium channel within the same time frame, thus fully cooling the crankshaft 1. This is particularly suitable for operating conditions with high ambient temperatures, where the crankshaft 1 speed is forced to be reduced to maintain the normal operation of the air compressor. However, installing more protrusions 40 still allows for the injection of sufficient cooling oil into the medium channel.

[0029] Reference Figure 3 A branch pipe 45 is connected to the first pipe 14, and the outlet end of the branch pipe 45 extends into the support frame 37. Branch pipe 45 is installed. After the cooling oil flows into pipe 14, some of the cooling oil flows out along branch pipe 45 and drips into support frame 37. Specifically, it drips into the rotational connection point between roller body 38 and support frame 37 to lubricate and protect the rotation of roller body 38.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving heat exchange mechanism for an air compressor, adapted to the air compressor body, wherein a crankshaft and a piston are provided within the air compressor body; characterized in that: The energy-saving heat exchange mechanism includes a medium channel disposed inside the crankshaft; The medium channel includes a No. 1 channel respectively opened inside the front and rear shafts of the crankshaft. Multiple No. 1 holes are opened on the outer surfaces of the front and rear shafts, and the No. 1 holes extend radially into the No. 1 channel. The crankshaft has a No. 2 channel inside the crank arm, which is connected to the adjacent No. 1 channel. The crankshaft has a No. 3 channel inside the connecting rod shaft diameter, which is connected to the adjacent No. 2 channel. The crankshaft has a No. 4 channel inside the crankshaft shaft diameter, which is connected to the adjacent No. 3 channel. The outer surface of the crankshaft shaft diameter has multiple No. 2 holes, which extend radially into the No. 4 channel. A first hollow ring is fitted on the outer ring of the front and rear shafts. The inner ring of the first hollow ring is connected to a first hole, and a first tube is connected to the first hollow ring. A second hollow ring is fitted on the outer ring of the crankshaft diameter. The inner ring of the second hollow ring is connected to a second hole, and a second tube is connected to the second hollow ring.

2. The energy-saving heat exchange mechanism for an air compressor according to claim 1, characterized in that: The third channel is split in the middle into a third liquid inlet channel and a third liquid outlet channel; the outer ring of the connecting rod shaft is respectively circumferentially arrayed with a third hole and a fourth hole, the third hole extending radially into the third liquid inlet channel and the fourth hole extending radially into the third liquid outlet channel; The crankshaft has symmetrical through holes in the middle of the bearing shell, which are respectively opposite to holes No. 3 and No. 4; the connecting rod to which the piston is connected has inlet pipes and outlet pipes symmetrically distributed on both sides. The inlet end of the inlet pipe extends to the bottom of the connecting rod, and the outlet end of the inlet pipe extends to the top of the connecting rod. The outlet end of the outlet pipe extends to the bottom of the connecting rod, and the inlet end of the outlet pipe extends to the top of the connecting rod. The piston is symmetrically provided with hollow hinge blocks, and a hollow shaft is rotatably connected inside the hinge block. The hollow shaft is fixed to the top of the connecting rod at the middle position, and the two sides of the hollow shaft are respectively connected to the inlet end of the inlet pipe and the inlet end of the outlet pipe. Cooling channels are formed inside the piston sidewall, and the inlet and outlet of the cooling channels are respectively connected to the interior of the hinge block.

3. The energy-saving heat exchange mechanism for an air compressor according to claim 2, characterized in that: The cooling channel is arranged in a spiral shape.

4. The energy-saving heat exchange mechanism for an air compressor according to claim 2, characterized in that: Overflow channels are provided on the inner and outer surfaces of each bearing bush, and the overflow channels are arranged to coincide with the through holes.

5. The energy-saving heat exchange mechanism for an air compressor according to claim 2, characterized in that: The first channel passes through the ends of the front shaft and the rear shaft respectively, and the ends of the front shaft and the rear shaft are provided with a first sealing bolt. The second channel is opened at an angle and extends through the outer arc surface of the crank, and the outer arc surface of the crank is provided with a second sealing bolt for sealing the second channel; The No. 3 channel is opened along the connecting rod shaft diameter axis and extends to the outer wall of the crank, and the No. 3 sealing bolt is provided on the outer wall of the crank to block the No. 3 channel; The fourth channel is opened along the crankshaft diameter axis and extends to the outer wall of the crank, and the outer wall of the crank is provided with a fourth sealing bolt to block the fourth channel.

6. The energy-saving heat exchange mechanism for an air compressor according to claim 5, characterized in that: The fourth channel is disconnected in the middle, and two sets of second holes are arranged in a circumferential array on the outer surface of the crankshaft diameter, with each set of second holes extending radially into the fourth channel.

7. The energy-saving heat exchange mechanism for an air compressor according to claim 1, characterized in that: An oil pump assembly is provided between the No. 1 pipe and the adjacent No. 2 pipe. The oil pump assembly includes a cylinder body. The bottom of the cylinder body is connected to the No. 2 pipe, and the top of the cylinder body is connected to the No. 1 pipe. A piston rod is provided inside the cylinder body. The top of the piston rod extends upward through the cylinder body and is fixed to a U-shaped support frame. A roller body is rotatably connected inside the support frame. A flywheel is provided on the outer ring of the front and rear shafts of the crankshaft. The outer surface of the flywheel is provided with an arc-shaped protrusion. The protrusion can intermittently squeeze the roller body.

8. The energy-saving heat exchange mechanism for an air compressor according to claim 7, characterized in that: A water-cooling assembly is provided between the second pipe and the cylinder body. The water-cooling assembly includes a water tank, on which an inlet pipe and a drain pipe are connected. The second pipe is coiled in the water tank in a snake-like shape, with upper and lower layers.

9. An energy-saving heat exchange mechanism for an air compressor according to claim 7, characterized in that: Multiple mounting slots are evenly spaced along the edge of the flywheel, and protrusions are installed within the mounting slots.

10. An energy-saving heat exchange mechanism for an air compressor according to claim 3, characterized in that: A branch pipe is connected to the first pipe, and the outlet end of the branch pipe extends into the support frame.

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