Two-stage waste heat recovery device for water-cooling air compressor

Abstract

The two-stage waste heat recovery device for the water-cooling air compressor comprises a cabinet body, a compressor is fixedly connected to the interior of the cabinet body, a first heat exchange box and a second heat exchange box are fixedly connected to the interior of the cabinet body, and two butt joint holes are formed in the outer wall of the first heat exchange box. Through the arrangement of the first heat exchange box, the heat exchange copper pipes, the circular heat dissipation fins, the through holes, the equipment frame, the motor and the stirring blades, the stirring blades rotate to drive water in the first heat exchange box to be stirred, under the condition that the loss of compressed gas is reduced, the water flows, and the heat transfer process is accelerated; by arranging the second heat exchange box, the partition plate, the dispersion pipes and the cooling fins, compressed air oil is dispersed through the multiple dispersion pipes, the cooling area is increased, waste heat recovery is facilitated, waste heat recovery is conducted on compressed air and the compressed air oil on the whole, and the purpose of waste heat recovery and utilization is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to a two-stage waste heat recovery device for water-cooled air compressors. Background Art

[0002] An air compressor is a device that compresses air into high-pressure gas and stores it in a tank. It consists of many different components, including a compressor, an oil-gas separator, a filter, and a tank. As air is compressed within the compressor, its temperature rises significantly. This is because during the compression process, the potential energy of air molecules is converted into kinetic energy, increasing molecular motion and causing a temperature increase. This temperature is then transferred to the compressed oil, which is then separated by the oil-gas separator. The oil then re-enters the compressor, while the compressed air enters the equipment using the air.

[0003] After searching, the patent document with publication number: CN219911076U discloses an air compressor waste heat recovery and reuse device, which belongs to the technical field of waste heat recovery equipment, including an environmentally friendly air compressor waste heat recovery device, a first insulation box is installed on the top of the environmentally friendly air compressor waste heat recovery device, a second insulation box that cooperates with the first insulation box is installed on the outside of the environmentally friendly air compressor waste heat recovery device, a first observation window is embedded in the front of the second insulation box, and a second observation window that cooperates with the first observation window is embedded on the environmentally friendly air compressor waste heat recovery device. Through the arrangement of the first insulation box and the second insulation box, the utility model can insulate the entire environmentally friendly air compressor waste heat recovery device, improve the insulation performance of the environmentally friendly air compressor waste heat recovery device, reduce the overall heat loss, and at the same time increase the heating speed of the water inside the environmentally friendly air compressor waste heat recovery device, so as to fully utilize the waste heat of the air compressor.

[0004] When in use, the above-mentioned device only recovers and reuses the waste heat of the compressed air, and does not make good use of the waste heat of the air compressor oil (air compressor oil). In addition, when the existing compressed air is recovering the waste heat, heat is transferred through water. In this process, since the compressed air pipeline adopts a disc-shaped structure and the pipe diameter is increased, the friction of the compressed gas increases and the compressed gas pressure decreases, which is not conducive to the use of subsequent gas-using equipment. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a two-stage waste heat recovery device for a water-cooled air compressor.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A two-stage waste heat recovery device for a water-cooled air compressor includes a cabinet body, a compressor is fixedly connected to the interior of the cabinet body, a first heat exchange box and a second heat exchange box are fixedly connected to the interior of the cabinet body, the outer wall of the first heat exchange box is provided with two docking holes, the inner walls of the two docking holes are fixedly connected to the same gas pipeline, the outer wall of the second heat exchange box is fixedly connected with an oil inlet pipe and an oil outlet pipe, the outer wall of the gas pipeline is fixedly sleeved with a heat exchange copper pipe, the outer wall of the heat exchange copper pipe is evenly fixedly sleeved with a plurality of circular cooling fins, the outer walls of the plurality of circular cooling fins are evenly provided with a plurality of through holes, the outer walls of the first heat exchange box and the second heat exchange box are fixedly connected with a water inlet pipe and a water outlet pipe, the interior of the second heat exchange box is provided with a heat exchange mechanism, and the outer wall of the first heat exchange box is provided with a dispersion mechanism.

[0008] Preferably, the heat exchange mechanism includes two partitions, the outer walls of the two partitions are fixedly connected to the inner wall of the second heat exchange box, the outer walls of the two partitions are evenly provided with a plurality of assembly holes, and the plurality of assembly holes are fixedly connected to dispersion pipes in groups of two. The outer walls of the dispersion pipes are evenly fixedly covered with a plurality of heat sinks, and the compressed air oil is dispersed by setting up a plurality of dispersion pipes to enable better heat transfer.

[0009] Preferably, the dispersion mechanism includes an equipment frame, the outer wall of the first heat exchange box is fixedly connected to the outer wall of the equipment frame, a motor is fixedly connected to the inside of the equipment frame, and one end of the motor output shaft is fixedly connected to a plurality of stirring blades. By providing a plurality of stirring blades, the water in the first heat exchange box is stirred to accelerate heat transfer.

[0010] Preferably, a through hole is provided on the outer wall of the first heat exchange box, and the inner wall of the through hole is rotatably connected to the outer wall of the motor output shaft.

[0011] Preferably, one end of the two water inlet pipes is fixedly connected to a water pump, one end of the two water outlet pipes is fixedly connected to a water storage tank, and the outer walls of the two water outlet pipes are installed with existing valves to control the discharge of hot water.

[0012] Preferably, a circular hole is opened on the outer wall of the cabinet, and the inner wall of the circular hole is fixedly connected to the outer wall of the gas pipeline.

[0013] Preferably, one end of the oil outlet pipe is fixedly connected to the outer wall of the compressor, and the oil outlet pipe re-enters the compressor after the waste heat is recovered and utilized, thereby lubricating the internal machinery.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] This solution is provided with a first heat exchange box, a heat exchange copper tube, a circular heat dissipation fin, a through hole, an equipment frame, a motor and a stirring blade. The stirring blade rotates to stir the water in the first heat exchange box, thereby making the water flow while reducing the loss of compressed gas and accelerating the heat transfer process.

[0016] By setting up a second heat exchange box, partitions, dispersion pipes and heat sinks, the compressed oil is dispersed through multiple dispersion pipes, increasing the heat dissipation area, which is beneficial to waste heat recovery. The waste heat of the compressed gas and the compressed oil are recovered separately as a whole, achieving the purpose of waste heat recovery and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the specific implementation methods. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a two-stage waste heat recovery device for a water-cooled air compressor proposed in the utility model;

[0019] Figure 2 This is a schematic cross-sectional view of a two-stage waste heat recovery device for a water-cooled air compressor proposed in the present invention;

[0020] Figure 3 This is a partial cross-sectional structural diagram of a two-stage waste heat recovery device for a water-cooled air compressor proposed in the present invention;

[0021] Figure 4 This is a schematic structural diagram of a two-stage waste heat recovery device for a water-cooled air compressor proposed in the utility model, including a first heat exchange box, a second heat exchange box, circular heat dissipation fins, through holes, partitions, dispersion pipes, equipment frame, motor and stirring blades.

[0022] In the figure: 1. Cabinet; 2. Compressor; 3. First heat exchange box; 4. Second heat exchange box; 5. Gas pipeline; 6. Oil inlet pipe; 7. Oil outlet pipe; 8. Heat exchange copper tube; 9. Circular cooling fin; 10. Through hole; 11. Water inlet pipe; 12. Water outlet pipe; 13. Partition; 14. Dispersion pipe; 15. Heat sink; 16. Equipment frame; 17. Motor; 18. Mixing blade. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Depend on Figures 1-4 As shown, it relates to a two-stage waste heat recovery device for a water-cooled air compressor, including a cabinet 1, a compressor 2 is fixedly connected to the inside of the cabinet 1, an oil-gas separator is installed in the cabinet 1, the compressor 2 transports the oil-gas mixture to the oil-gas separator for oil-gas separation, and then discharges it through the gas pipeline 5 and the oil inlet pipe 6, a first heat exchange box 3 and a second heat exchange box 4 are fixedly connected to the inside of the cabinet 1, two docking holes are opened on the outer wall of the first heat exchange box 3, the inner walls of the two docking holes are fixedly connected to the same gas pipeline 5, a circular hole is opened on the outer wall of the cabinet 1, and the inner wall of the circular hole is fixedly connected to the outer wall of the gas pipeline 5.

[0025] The outer wall of the second heat exchange box 4 is fixedly connected with an oil inlet pipe 6 and an oil outlet pipe 7. One end of the oil outlet pipe 7 is fixedly connected with the outer wall of the compressor 2. The outer wall of the gas pipeline 5 is fixedly sleeved with a heat exchange copper tube 8. The outer wall of the heat exchange copper tube 8 is evenly fixedly sleeved with a plurality of circular heat dissipation fins 9. The plurality of circular heat dissipation fins 9 recover the waste heat of the compressed gas. The outer walls of the plurality of circular heat dissipation fins 9 are evenly opened with a plurality of through holes 10. The plurality of through holes 10 facilitate the flow of water in the first heat exchange box 3.

[0026] The outer walls of the first heat exchange box 3 and the second heat exchange box 4 are fixedly connected with a water inlet pipe 11 and a water outlet pipe 12, one end of the two water inlet pipes 11 is fixedly connected with a water pump, and one end of the two water outlet pipes 12 is fixedly connected with a water storage tank, and the outer walls of the water storage tank, the first heat exchange box 3 and the second heat exchange box 4 are all provided with an insulation layer.

[0027] A heat exchange mechanism is provided inside the second heat exchange box 4. The heat exchange mechanism includes two partitions 13. The outer walls of the two partitions 13 are fixedly connected to the inner wall of the second heat exchange box 4. The two partitions 13 divide the second heat exchange box 4 into three areas. The outer walls of the two partitions 13 are evenly provided with a plurality of assembly holes. The plurality of assembly holes are respectively fixedly connected with dispersion pipes 14 in groups of two. The outer walls of the dispersion pipes 14 are evenly fixedly covered with a plurality of heat sinks 15. The plurality of heat sinks 15 dissipate heat for the compressed air and increase the heat dissipation area.

[0028] The outer wall of the first heat exchange box 3 is provided with a dispersion mechanism, which includes an equipment frame 16. The outer wall of the first heat exchange box 3 is fixedly connected to the outer wall of the equipment frame 16. The interior of the equipment frame 16 is fixedly connected to a motor 17. The outer wall of the first heat exchange box 3 is provided with a through hole. The inner wall of the through hole is rotatably connected to the outer wall of the output shaft of the motor 17. The inner wall of the through hole is mechanically sealed. One end of the output shaft of the motor 17 is fixedly connected to a plurality of stirring blades 18.

[0029] Working principle: When in use, compressed gas enters the gas pipeline 5, and compressed oil enters the oil inlet pipe 6. The two water pumps operate to transport water to the first heat exchange box 3 and the second heat exchange box 4. The heat carried by the compressed gas is transferred to the outer wall of the heat exchange copper tube 8, and then dissipated by multiple circular heat dissipation fins 9. The operation of the motor 17 drives the stirring blade 18 to rotate. The rotation of the stirring blade 18 drives the water in the first heat exchange box 3 to stir, so that it flows through the multiple circular heat dissipation fins 9 and the multiple through holes 10, thereby accelerating the heat transfer process; at the same time, the compressed oil enters the second heat exchange box 4 and is dispersed through multiple dispersion pipes 14 to facilitate subsequent heat dissipation through multiple heat sinks 15, increase the heat dissipation area, and facilitate waste heat recovery. The hot water is stored in the storage tanks through the two outlet pipes, thereby achieving the purpose of waste heat recovery.

[0030] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A two-stage waste heat recovery device for a water-cooled air compressor, comprising a cabinet (1), characterized in that: The interior of the cabinet (1) is fixedly connected to a compressor (2), and the interior of the cabinet (1) is fixedly connected to a first heat exchange box (3) and a second heat exchange box (4). The outer wall of the first heat exchange box (3) is provided with two docking holes, and the inner walls of the two docking holes are fixedly connected to the same gas pipeline (5). The outer wall of the second heat exchange box (4) is fixedly provided with an oil inlet pipe (6) and an oil outlet pipe (7) that are interconnected. The outer wall of the gas pipeline (5) is fixedly provided with a heat exchange copper pipe (8), and the outer wall of the heat exchange copper pipe (8) is evenly fixedly provided with a plurality of circular heat dissipation fins (9). The outer walls of the plurality of circular heat dissipation fins (9) are evenly provided with a plurality of through holes (10). The outer walls of the first heat exchange box (3) and the second heat exchange box (4) are both fixedly provided with a water inlet pipe (11) and a water outlet pipe (12). The interior of the second heat exchange box (4) is provided with a heat exchange mechanism, and the outer wall of the first heat exchange box (3) is provided with a dispersion mechanism.

2. A two-stage waste heat recovery device for a water-cooled air compressor according to claim 1, characterized in that: The heat exchange mechanism comprises two partitions (13), the outer walls of the two partitions (13) are fixedly connected to the inner wall of the second heat exchange box (4), the outer walls of the two partitions (13) are uniformly provided with a plurality of assembly holes, and the plurality of assembly holes are fixedly connected to dispersion pipes (14) in groups of two, and the outer walls of the dispersion pipes (14) are uniformly fixedly provided with a plurality of heat sinks (15).

3. The two-stage waste heat recovery device for a water-cooled air compressor according to claim 1, characterized in that: The dispersion mechanism comprises an equipment frame (16), the outer wall of the first heat exchange box (3) is fixedly connected to the outer wall of the equipment frame (16), a motor (17) is fixedly connected inside the equipment frame (16), and a plurality of stirring blades (18) are fixedly connected to one end of the output shaft of the motor (17).

4. A two-stage waste heat recovery device for a water-cooled air compressor according to claim 3, characterized in that: A through hole is provided on the outer wall of the first heat exchange box (3), and the inner wall of the through hole is rotatably connected to the outer wall of the output shaft of the motor (17).

5. The two-stage waste heat recovery device for a water-cooled air compressor according to claim 1, characterized in that: One end of the two water inlet pipes (11) is fixedly connected to a water pump, and one end of the two water outlet pipes (12) is fixedly connected to a water storage tank.

6. The two-stage waste heat recovery device for a water-cooled air compressor according to claim 1, characterized in that: A circular hole is provided on the outer wall of the cabinet (1), and the inner wall of the circular hole is fixedly connected to the outer wall of the gas pipeline (5).

7. The two-stage waste heat recovery device for a water-cooled air compressor according to claim 1, characterized in that: One end of the oil outlet pipe (7) is fixedly connected to the outer wall of the compressor (2).

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