Air compressor waste heat recycling device

Abstract

The utility model discloses a waste heat recycling device of an air compressor, which relates to the technical field of air compressors and comprises an air compressor body and a shell, a vacuum layer is arranged in the shell, a plurality of first fins are uniformly and fixedly arranged between the air compressor body and the shell, spiral heat exchange tubes are arranged on the first fins, and a plurality of second fins are arranged on the spiral heat exchange tubes. A space defined by the air compressor body and the shell is filled with cooling liquid, a heat exchange box is arranged on the right side of the air compressor body, a water pump is arranged above the heat exchange box, a spiral heat exchange pipe is communicated with a liquid outlet of the water pump through a first liquid inlet pipe, and the spiral heat exchange pipe is communicated with the heat exchange box through a first liquid outlet pipe. Cooling liquid in the heat exchange box is conveyed into the spiral heat exchange pipe through the water pump, the first fins are matched with the cooling liquid to conduct heat on the air compressor body to the spiral heat exchange pipe, the cooling liquid obtained after heat exchange flows back into the heat exchange box under the action of the water pump, and the operation efficiency of the air compressor body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to a device for recovering and reusing waste heat from air compressors. Background Art

[0002] The recovery of waste heat from air compressors is an efficient energy-saving technology. Air compressors generate a lot of heat during operation, and this part of the heat energy is usually discharged into the environment, resulting in a waste of resources. Through the waste heat recovery system, this waste heat can be reused to improve overall energy efficiency. There are many ways to recover waste heat, such as transferring the heat of the air compressor to water through a heat exchanger to form hot water for industrial production, heating or other places that require thermal energy. Waste heat can also be used to heat air or other media to help increase the temperature in the production process and reduce additional heating requirements. This technology can not only significantly reduce energy consumption, but also reduce operating costs. Taking air compressors as an example, through effective waste heat recovery, enterprises can reduce their dependence on external energy to a certain extent and improve resource utilization efficiency. At the same time, this also helps to reduce carbon emissions and achieve environmental protection goals.

[0003] The utility model with authorization announcement number CN209385309U discloses an air compressor waste heat recovery device, which recovers the heat generated by the air compressor through a waste heat recovery box. A sound insulation layer and a heat preservation layer are arranged on the outside of the waste heat recovery box to keep the hot air warm and effectively reduce noise pollution.

[0004] The above-mentioned device can recover the waste heat of the air compressor, but the device only transfers the heat to the waste heat recovery box through the heat dissipation port, which inevitably causes heat dissipation in the process. In addition, the sound insulation layer of the device is for the waste heat recovery box, and the main noise generated by the air compressor is its body, resulting in poor noise reduction effect of the device. Therefore, a device with better sound insulation performance and higher heat recovery and reuse efficiency is needed. Utility Model Content

[0005] The purpose of the utility model is to provide an air compressor waste heat recovery and reuse device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A waste heat recovery and reuse device for an air compressor comprises an air compressor body and a shell, a vacuum layer is provided in the shell, a plurality of first fins are evenly and fixedly arranged between the air compressor body and the shell, a spiral heat exchange tube is arranged on the first fin, the space enclosed by the air compressor body and the shell is filled with coolant, a heat exchange box is arranged on the right side of the air compressor body, a water pump is arranged above the heat exchange box, the spiral heat exchange tube is connected to the water pump outlet through a first liquid inlet pipe, the spiral heat exchange tube is connected to the heat exchange box through the first liquid outlet pipe, the water pump inlet is provided with a second liquid inlet pipe, and the second liquid inlet pipe passes through the top plate of the heat exchange box and extends into the heat exchange box.

[0008] As a further solution of the utility model: a fixing ring is relatively fixedly arranged on the outer side of the shell.

[0009] As a further solution of the utility model: a first heat exchanger is arranged on the rear side of the heat exchanger box, and the air outlet of the air compressor body is connected with the air inlet of the first heat exchanger through a connecting pipe. The air outlet of the first heat exchanger is provided with an air outlet pipe, and the air outlet pipe passes through the side wall of the heat exchanger box, and the air outlet pipe is provided with an air outlet valve.

[0010] As a further solution of the utility model: a plurality of second fins are evenly arranged on the first heat exchanger.

[0011] As a further solution of the utility model: a second heat exchanger is arranged on the front side of the heat exchange box, a third liquid inlet pipe is arranged on the liquid inlet of the second heat exchanger and the third liquid inlet pipe passes through the side wall of the heat exchange box, an inlet valve is arranged on the third liquid inlet pipe, a second liquid outlet pipe is arranged on the liquid outlet of the second heat exchanger and the second liquid outlet pipe passes through the side wall of the heat exchange box, and a liquid outlet valve is arranged on the second liquid outlet pipe.

[0012] As a further solution of the present invention: a plurality of third fins are evenly arranged on the second heat exchanger.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The coolant in the heat exchange box is transported to the spiral heat exchange tube through the water pump. The first fin cooperates with the coolant to transfer the heat on the air compressor body to the spiral heat exchange tube. Under the action of the water pump, the coolant after heat exchange returns to the heat exchange box, which improves the operating efficiency of the air compressor body and can recycle the heat generated by the air compressor body. The vacuum layer in the shell serves the purpose of heat preservation and sound insulation.

[0015] The heat of the high-temperature compressed gas is transferred to the coolant in the heat exchange box through the second fins through the first heat exchanger. The second heat exchanger cooperates with a number of third fins to absorb the heat in the coolant (the heat in the coolant comes from the heat generated by the air compressor body and the heat of the compressed gas), and then the heat in the heat exchange box is recycled and utilized in a centralized manner to achieve the purpose of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the main structure of the utility model.

[0018] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0019] Figure 4 For this utility model Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle.

[0020] Figure 5 It is a schematic diagram of a local three-dimensional structure inside the second shell of the utility model.

[0021] Notes on figure numbers: 1. air compressor body; 2. fixing ring; 3. shell; 4. vacuum layer; 5. first fin; 6. spiral heat exchange tube; 7. first liquid inlet pipe; 8. first liquid outlet pipe; 9. water pump; 10. second liquid inlet pipe; 11. heat exchange box; 12. connecting pipe; 13. first heat exchanger; 14. second fin; 15. air outlet pipe; 16. air outlet valve; 17. second heat exchanger; 18. third fin; 19. third liquid inlet pipe; 20. liquid inlet valve; 21. second liquid outlet pipe; 22. liquid outlet valve. DETAILED DESCRIPTION

[0022] The following embodiments will be combined with the accompanying drawings to describe the utility model in detail. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.

[0023] Example

[0024] See also Figures 1 to 5In an embodiment of the utility model, an air compressor waste heat recovery and reuse device comprises an air compressor body 1 and a shell 3. The air compressor body 1 is preferably a screw pump air compressor or a centrifugal pump air compressor. A fixing ring 2 is relatively fixedly arranged on the outer side of the shell 3. A vacuum layer 4 is opened in the shell 3. A plurality of first fins 5 are evenly and fixedly arranged between the air compressor body 1 and the shell 3. A spiral heat exchange tube 6 is arranged on the first fin 5. The space enclosed by the air compressor body 1 and the shell 3 is filled with coolant. A heat exchange box 11 is arranged on the right side of the air compressor body 1. A water pump 9 is arranged above the heat exchange box 11. The spiral heat exchange tube 6 is filled with coolant through the first liquid inlet pipe 7. The tube 6 is connected with the liquid outlet of the water pump 9, and the spiral heat exchange tube 6 is connected with the heat exchange box 11 through the first liquid outlet pipe 8. The liquid inlet of the water pump 9 is provided with a second liquid inlet pipe 10, and the second liquid inlet pipe 10 passes through the top plate of the heat exchange box 11 and extends into the heat exchange box 11. The coolant in the heat exchange box 11 is transported to the spiral heat exchange tube 6 through the water pump 9. The first fin 5 cooperates with the coolant to conduct the heat on the air compressor body 1 to the spiral heat exchange tube 6. Under the action of the water pump 9, the coolant after heat exchange is returned to the heat exchange box 11, thereby improving the operating efficiency of the air compressor body 1, and the heat generated by the air compressor body 1 can be recycled. The vacuum layer 4 in the shell 3 serves the purpose of heat preservation and sound insulation.

[0025] A first heat exchanger 13 is provided at the rear side of the heat exchange box 11, and a plurality of second fins 14 are evenly provided on the first heat exchanger 13. The air outlet of the air compressor body 1 is connected to the air inlet of the first heat exchanger 13 through a connecting pipe 12. An air outlet pipe 15 is provided at the air outlet of the first heat exchanger 13, and the air outlet pipe 15 passes through the side wall of the heat exchange box 11. An air outlet valve 16 is provided on the air outlet pipe 15. A second heat exchanger 17 is provided at the front side of the heat exchange box 11, and a plurality of third fins 18 are evenly provided on the second heat exchanger 17. A third liquid inlet pipe 19 is provided at the liquid inlet of the second heat exchanger 17, and the third liquid inlet pipe 19 passes through the side wall of the heat exchange box 11. 11 side wall, the third liquid inlet pipe 19 is provided with a liquid inlet valve 20, the second heat exchanger 17 is provided with a second liquid outlet pipe 21 at the liquid outlet and the second liquid outlet pipe 21 passes through the side wall of the heat exchange box 11, and the second liquid outlet pipe 21 is provided with a liquid outlet valve 22. The heat of the high-temperature compressed gas is transferred to the coolant in the heat exchange box 11 through the first heat exchanger 13 through the second fins 14. The second heat exchanger 17 cooperates with a plurality of third fins 18 to absorb the heat in the coolant (the heat in the coolant comes from the heat generated by the air compressor body 1 and the heat of the compressed gas), and then the heat in the heat exchange box 11 is concentratedly recycled and utilized to achieve the purpose of energy saving.

[0026] When the device is used, the air compressor body 1 is started to compress the air, the water pump 9 is turned on, and the coolant in the heat exchange box 11 is transported to the spiral heat exchange tube 6. The first fin 5 cooperates with the spiral heat exchange tube 6 to transfer the heat on the air compressor body 1 to the coolant in the spiral heat exchange tube 6. Under the action of the water pump 9, the coolant is returned to the heat exchange box 11 after heat exchange and temperature rise. When the air compressor body 1 is running (due to the compression of the air, the temperature of the compressed air itself increases), the air outlet valve 16 is opened, and the compressed air passes through the first heat exchange tube 6. When the heat exchanger 13 is opened, the first heat exchanger 13 and the plurality of second fins 14 cooperate to transfer heat to the coolant in the heat exchange box 11 (the heat source of the coolant in the heat exchange box 11 is the heat of the air compressor body 1 and the compressed air), the inlet valve 20 and the outlet valve 22 are opened, and the heat exchange liquid is delivered to the second heat exchanger 17. The second heat exchanger 17 cooperates with the plurality of third fins 18 to absorb the heat of the coolant in the heat exchange box 11, and then the heat in the heat exchange box 11 is recovered and reused in a centralized manner (the use of this heat is not limited).

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An air compressor waste heat recovery and reuse device, comprising an air compressor body (1) and a shell (3), characterized in that: A vacuum layer (4) is provided in the shell (3); a plurality of first fins (5) are evenly and fixedly provided between the air compressor body (1) and the shell (3); a spiral heat exchange tube (6) is provided on the first fin (5); a space enclosed by the air compressor body (1) and the shell (3) is filled with cooling liquid; a heat exchange box (11) is provided on the right side of the air compressor body (1); a water pump (9) is provided above the heat exchange box (11); the spiral heat exchange tube (6) is connected to the liquid outlet of the water pump (9) through a first liquid inlet pipe (7); the spiral heat exchange tube (6) is connected to the heat exchange box (11) through a first liquid outlet pipe (8); a second liquid inlet pipe (10) is provided at the liquid inlet of the water pump (9); and the second liquid inlet pipe (10) passes through a top plate of the heat exchange box (11) and extends into the heat exchange box (11).

2. The air compressor waste heat recovery and reuse device according to claim 1, characterized in that: A fixing ring (2) is relatively fixedly arranged on the outside of the shell (3).

3. The air compressor waste heat recovery and reuse device according to claim 1, characterized in that: A first heat exchanger (13) is arranged at the rear side of the heat exchange box (11); an air outlet of the air compressor body (1) is connected to an air inlet of the first heat exchanger (13) via a connecting pipe (12); an air outlet pipe (15) is arranged at the air outlet of the first heat exchanger (13); and the air outlet pipe (15) passes through a side wall of the heat exchange box (11); an air outlet valve (16) is arranged on the air outlet pipe (15).

4. The air compressor waste heat recovery and reuse device according to claim 3 is characterized in that: A plurality of second fins (14) are evenly arranged on the first heat exchanger (13).

5. The air compressor waste heat recovery and reuse device according to claim 4, characterized in that: A second heat exchanger (17) is arranged at the front side of the heat exchange box (11); a third liquid inlet pipe (19) is arranged at the liquid inlet of the second heat exchanger (17), and the third liquid inlet pipe (19) passes through the side wall of the heat exchange box (11); a liquid inlet valve (20) is arranged on the third liquid inlet pipe (19); a second liquid outlet pipe (21) is arranged at the liquid outlet of the second heat exchanger (17), and the second liquid outlet pipe (21) passes through the side wall of the heat exchange box (11); and a liquid outlet valve (22) is arranged on the second liquid outlet pipe (21).

6. The air compressor waste heat recovery and reuse device according to claim 5, characterized in that: A plurality of third fins (18) are evenly arranged on the second heat exchanger (17).

Images