A centrifugal air compressor waste heat recovery device and its method

Abstract

The present invention discloses a waste heat recovery device and method for a centrifugal air compressor, specifically relating to the technical field of waste heat recovery of centrifugal air compressors. It includes a support base, on which a diversion and recovery assembly is provided. The diversion and recovery assembly includes a fan arranged on one side of the top of the support base, and a number of first one-way valves are distributed on the fan, and each first one-way valve is communicated with the fan. Through the corresponding cooperation of each structure of the present invention, the high-temperature medium is shunted into each conduit and pressurizing pipe, realizing the function of shunting and recycling the high-temperature medium after gathering. The high-temperature medium conducts heat exchange through the contact fins on the outer side of the first heat exchange tube and the contact fins on the outer side of the second heat exchange tube, realizing the function of recovering waste heat therefrom. The first heat exchange tube and the second heat exchange tube rotate, so that the contact fins on each first heat exchange tube and the second heat exchange tube can contact each other one by one, improving the heat exchange recovery efficiency and effect.

Description

Technical Field

[0001] The present invention relates to the technical field of waste heat recovery of centrifugal air compressors. More specifically, the present invention relates to a waste heat recovery device and method for centrifugal air compressors. Background Art

[0002] A centrifugal air compressor is a type of dynamic compressor, mainly composed of two major parts: a rotor and a stator. The rotor includes a blower and a shaft, while the stator consists of parts such as a housing (cylinder). When the blower rotates at high speed, the gas rotates along with it. Under the action of centrifugal force, the gas is thrown into the rear diffuser, and a vacuum zone is formed at the blower. At this time, fresh gas from the outside enters the blower. By continuously rotating and discharging the gas, the centrifugal air compressor can continuously produce compressed air.

[0003] During the operation of a centrifugal air compressor, a large amount of waste heat is generated. If not treated, this waste heat not only wastes energy but may also cause environmental pollution. Therefore, it is of great significance to recycle and reuse the waste heat of centrifugal air compressors. Through waste heat recovery, the waste heat generated by the centrifugal air compressor can be used for other purposes, such as heating and heating, thereby improving energy utilization efficiency, reducing production costs, and reducing environmental pollution.

[0004] Among them, the patent with the patent application number CN201420590041.6 discloses a waste heat recovery system for a centrifugal air compressor, including a heat recovery heat exchanger, a water inlet pipe, a water outlet pipe, an air inlet pipe, and an air outlet pipe. One flow channel of the heat recovery heat exchanger is connected to the water inlet pipe and the water outlet pipe, and the other flow channel is connected to the air inlet pipe and the air outlet pipe. The air inlet pipe is connected to the centrifugal air compressor, and the air outlet pipe is sequentially connected to a filter and a cooler. A connection valve parallel to the heat recovery heat exchanger is provided between the air inlet pipe and the air outlet pipe; a blowdown valve and a two-way valve are provided in parallel on the water inlet pipe;

[0005] When this structure is in use, a large amount of heat energy generated during the operation of the air compressor can be recovered by heat exchange between cold water and hot air in the heat recovery heat exchanger, and the recovered heat energy can be used for production and life to protect the environment. However, when this structure is in use, it is not easy to gather the high-temperature medium generated during the operation of the equipment together for split recovery, resulting in low efficiency of waste heat recovery and utilization. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a waste heat recovery device and method for centrifugal air compressors, aiming to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A waste heat recovery device for a centrifugal air compressor, including a support base, and a diversion recovery component is provided on the support base;

[0008] The diversion recovery component includes a fan arranged on one side of the top of the support base. A number of first one-way valves are distributed on the fan, and each of the first one-way valves is communicated with the fan. A conduit is arranged on each of the multiple first one-way valves, and one end of each conduit is provided with a booster pipe. One end of the booster pipe is provided with a second one-way valve, and the second one-way valve is clamped with the booster pipe. A number of support rods are inserted on the second one-way valve;

[0009] It can be seen that in the above technical solution, through the method of pressurizing the high-temperature medium in the booster pipe and discharging it through the second one-way valve, it is easy to gather the high-temperature medium, making the discharge of the high-temperature medium more targeted;

[0010] One end of the booster pipe is provided with a protective shell. A first heat exchange pipe is arranged inside the protective shell. A second heat exchange pipe is arranged on one side of the first heat exchange pipe. A number of contact fins are distributed on the outer sides of the first heat exchange pipe and the second heat exchange pipe, and the cross-section of each contact fin is arranged in a spiral shape, and each contact fin is in contact with each other. One end of the second heat exchange pipe and the first heat exchange pipe is provided with a quick connector, and one end of each quick connector is provided with a discharge pipe opening. The quick connector is rotationally connected with the protective shell. A gear box is arranged at one end of the protective shell away from the quick connector. Two extension pipes are arranged inside the gear box, and each of the extension pipes is arranged at one end of the first heat exchange pipe and the second heat exchange pipe respectively. Driven gears meshing with each other are sleeved on the outer sides of the first heat exchange pipe and the second heat exchange pipe. The two extension pipes are respectively communicated with the first heat exchange pipe and the second heat exchange pipe, and diversion cavities are formed between the first heat exchange pipe and the second heat exchange pipe and the corresponding contact fins respectively. The extension pipe belonging to the first heat exchange pipe is arranged on the second one-way valve;

[0011] It can be seen that in the above technical solution, the high-temperature medium conducts heat exchange through the contact between the contact fins on the outer side of the first heat exchange pipe and the contact fins on the outer side of the second heat exchange pipe, realizing the function of recovering and utilizing its waste heat. At the same time, in order to further ensure the recovery efficiency and effect, an external motor is used to drive the gear box to operate. When the gear box operates, it drives the extension pipes and the driven gears to rotate, and then makes the first heat exchange pipe and the second heat exchange pipe rotate, so that the contact fins on each first heat exchange pipe and the second heat exchange pipe can contact each other one by one, and the heat generated by the friction between the two is also recovered by the heat exchange medium in the second heat exchange pipe;

[0012] One end of the pressure increasing pipe is provided with a converging frame. A turntable is arranged inside the converging frame. A crankshaft is arranged on the turntable. A number of traction rods are distributed on the outer side of the crankshaft, and each of the traction rods is movably connected to the crankshaft through a pin. One ends of the plurality of traction rods are all movably connected to a piston through a pin, and each of the pistons is respectively located in a corresponding pressure increasing pipe. The piston is slidably connected to the pressure increasing pipe. A driving motor is arranged on the air blower. The output end of the driving motor penetrates through the air blower and the support base and extends to the turntable. A through hole is formed at one end of the converging frame;

[0013] It can be seen that in the above technical solution, when the driving motor is started to drive the air blower to operate, the high-temperature medium in the converging frame is extracted and shunted through each first one-way valve, and the high-temperature medium is shunted into each conduit and pressure increasing pipe. When the driving motor drives the air blower to operate, it can also drive the turntable to rotate. When the turntable rotates, it drives the crankshaft to rotate. When the crankshaft rotates, it will pull each traction rod and piston to displace in the corresponding pressure increasing pipe, so that the high-temperature medium in the pressure increasing pipe is conveyed into the first heat exchange pipe through the second one-way valve;

[0014] A waste heat recovery method, using the centrifugal air compressor waste heat recovery device as described above, includes the following steps;

[0015] Step 1, the staff installs the device at a designated position. When recovering and utilizing the heat generated during the operation of the air compressor, the heat exchange medium is injected into the second heat exchange pipe, and the high-temperature medium is injected into the converging frame through the through hole. When the driving motor is started to drive the air blower to operate, the high-temperature medium in the converging frame is extracted and shunted through each first one-way valve, and the high-temperature medium is shunted into each conduit and pressure increasing pipe;

[0016] Step 2, when the driving motor drives the air blower to operate, it can also drive the turntable to rotate. When the turntable rotates, it drives the crankshaft to rotate. When the crankshaft rotates, it will pull each traction rod and piston to displace in the corresponding pressure increasing pipe, so that the high-temperature medium in the pressure increasing pipe is conveyed into the first heat exchange pipe through the second one-way valve;

[0017] Step 3, the high-temperature medium conducts heat exchange through the contact fins on the outer side of the first heat exchange pipe and the contact fins on the outer side of the second heat exchange pipe, realizing the function of waste heat recovery and utilization. At the same time, in order to further ensure the recovery efficiency and effect, an external motor drives the gearbox to operate. When the gearbox operates, it drives the extension pipe and the driven gear to rotate, and then makes the first heat exchange pipe and the second heat exchange pipe rotate, so that the contact fins on each first heat exchange pipe and the second heat exchange pipe can contact each other one by one, and the heat generated by the friction between the two is also recovered by the heat exchange medium in the second heat exchange pipe;

[0018] Step 4, and by means of pressurizing the high-temperature medium in the pressurizing pipe and discharging it through the second one-way valve, it is easy to gather the high-temperature medium, making the discharge of the high-temperature medium more targeted.

[0019] Technical effects and advantages of the present invention:

[0020] In the present invention, the heat exchange medium is injected into the second heat exchange tube, and the high-temperature medium is injected into the gathering frame through the through holes. The driving motor is started to drive the blower to operate, and the high-temperature medium in the gathering frame is extracted and shunted through each first one-way valve. The high-temperature medium is shunted into each conduit and pressurizing pipe, realizing the function of shunting and recycling the high-temperature medium after gathering;

[0021] When the driving motor drives the blower to operate in the present invention, it can also drive the turntable to rotate. When the turntable rotates, it drives the crankshaft to rotate. When the crankshaft rotates, it will pull each traction rod and piston to displace in the corresponding pressurizing pipe, so that the high-temperature medium in the pressurizing pipe is transported to the first heat exchange tube through the second one-way valve;

[0022] In the present invention, the high-temperature medium conducts heat exchange through the contact fins on the outside of the first heat exchange tube and the contact fins on the outside of the second heat exchange tube, realizing the function of recovering waste heat. By means of pressurizing the high-temperature medium in the pressurizing pipe and discharging it through the second one-way valve, it is easy to gather the high-temperature medium, making the discharge of the high-temperature medium more targeted;

[0023] In the present invention, an external motor drives the gearbox to operate. When the gearbox operates, it drives the extension pipe and the driven gear to rotate, and then makes the first heat exchange tube and the second heat exchange tube rotate, so that the contact fins on each first heat exchange tube and the second heat exchange tube can contact each other one by one. At the same time, the heat generated by the friction between the two is also recovered by the heat exchange medium in the second heat exchange tube;

[0024] In summary, the overall design is simple and the structure is reasonable. Through the corresponding cooperation of each structure, the high-temperature medium is shunted into each conduit and pressurizing pipe, realizing the function of shunting and recycling the high-temperature medium after gathering. The high-temperature medium conducts heat exchange through the contact fins on the outside of the first heat exchange tube and the contact fins on the outside of the second heat exchange tube, realizing the function of recovering waste heat. By means of pressurizing the high-temperature medium in the pressurizing pipe and discharging it through the second one-way valve, it is easy to gather the high-temperature medium, making the discharge of the high-temperature medium more targeted. The first heat exchange tube and the second heat exchange tube are rotated, so that the contact fins on each first heat exchange tube and the second heat exchange tube can contact each other one by one, improving the heat exchange recovery efficiency and effect. Brief Description of the Drawings

[0025] To more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings in the following description are only the drawings of some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams and are not limitations on the actual dimensions of the products involved in the embodiments of the present disclosure, the actual processes of the methods, the actual timings of the signals, etc.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a perspective view of the pressure boosting pipe, fan, and gathering frame of the present invention installed on the support base.

[0028] Figure 3 It is a perspective view of the protective shell of the present invention.

[0029] Figure 4 It is a perspective view of the protective shell, gearbox, extension pipe, and driven gear of the present invention.

[0030] Figure 5 It is a perspective view of the second heat exchange pipe, first heat exchange pipe, quick connector, and discharge pipe opening of the present invention.

[0031] Figure 6 It is a cross-sectional view of the first heat exchange pipe, second heat exchange pipe, and contact fins of the present invention.

[0032] Figure 7 It is a perspective view of the turntable, crankshaft, towing rod, and piston of the present invention.

[0033] Figure 8 It is a perspective view of the gathering frame, pressure boosting pipe, drive motor, and conduit of the present invention.

[0034] The reference numerals are: 1, support base; 101, fan; 102, first one-way valve; 103, conduit; 104, pressure boosting pipe; 105, second one-way valve; 106, support rod;

[0035] 2, protective shell; 201, first heat exchange pipe; 202, second heat exchange pipe; 203, contact fins; 204, diversion cavity; 205, quick connector; 206, discharge pipe opening; 207, gearbox; 208, extension pipe; 209, driven gear;

[0036] 3, gathering frame; 301, turntable; 302, crankshaft; 303, towing rod; 304, piston; 305, through hole; 306, drive motor. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0038] The terms "first", "second", and "third" in the embodiments of the present application are only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0039] Referring to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0040] As shown in the attached Figure 1-8 A waste heat recovery device for a centrifugal air compressor, through the diversion recovery component provided on the support base 1, through the corresponding cooperation of each structure, diverts the high-temperature medium into each conduit 103 and the pressurization pipe 104, realizes the function of diverting and recycling the high-temperature medium after gathering, and the high-temperature medium conducts heat exchange through the contact fins 203 on the outer side of the first heat exchange tube 201 and the contact fins 203 on the outer side of the second heat exchange tube 202 to realize the function of recovering waste heat therefrom. In the way that the high-temperature medium is pressurized in the pressurization pipe 104 and discharged through the second one-way valve 105, it is easy to gather the high-temperature medium, making the discharge of the high-temperature medium more targeted. The first heat exchange tube 201 and the second heat exchange tube 202 rotate, so that the contact fins 203 on each first heat exchange tube 201 and the second heat exchange tube 202 can contact each other one by one, improving the heat exchange recovery efficiency and effect, and the specific structure of the component is set as follows.

[0041] The diversion recovery component includes a fan 101 arranged on one side of the top of the support base 1. A number of first one-way valves 102 are distributed on the fan 101, and each first one-way valve 102 is communicated with the fan 101. A conduit 103 is arranged on each of the multiple first one-way valves 102, and a pressurization pipe 104 is arranged at one end of each conduit 103. A second one-way valve 105 is arranged at one end of the pressurization pipe 104. When the fan 101 operates, it extracts the high-temperature medium in the gathering frame 3 and shunts it through each first one-way valve 102, diverting the high-temperature medium into each conduit 103 and pressurization pipe 104. The second one-way valve 105 is clamped with the pressurization pipe 104, and a number of support rods 106 are inserted into the second one-way valve 105. By the way that the high-temperature medium is pressurized in the pressurization pipe 104 and discharged through the second one-way valve 105, it is easy to gather the high-temperature medium, making the discharge of the high-temperature medium more targeted.

[0042] A protective shell 2 is arranged at one end of the pressurization pipe 104. A first heat exchange pipe 201 is arranged in the protective shell 2. A second heat exchange pipe 202 is arranged on one side of the first heat exchange pipe 201. A number of contact fins 203 are distributed on the outer sides of the first heat exchange pipe 201 and the second heat exchange pipe 202, and the cross-section of each contact fin 203 is arranged in a spiral shape, and each contact fin 203 is in contact with each other. The high-temperature medium conducts heat exchange through the contact between the contact fins 203 on the outer side of the first heat exchange pipe 201 and the contact fins 203 on the outer side of the second heat exchange pipe 202. Quick-connect joints 205 are arranged at one ends of the second heat exchange pipe 202 and the first heat exchange pipe 201, and discharge nozzles 206 are arranged at one ends of each quick-connect joint 205. The quick-connect joint 205 is rotatably connected to the protective shell 2. A gearbox 207 is arranged at one end of the protective shell 2 away from the quick-connect joint 205. Two extension pipes 208 are arranged in the gearbox 207, and each extension pipe 208 is respectively arranged at one end of the first heat exchange pipe 201 and the second heat exchange pipe 202. Driven gears 209 that mesh with each other are sleeved on the outer sides of the first heat exchange pipe 201 and the second heat exchange pipe 202. When the gearbox 207 operates, it drives the extension pipes 208 and the driven gears 209 to rotate, and then makes the first heat exchange pipe 201 and the second heat exchange pipe 202 rotate, so that the contact fins 203 on each first heat exchange pipe 201 and the second heat exchange pipe 202 can contact each other one by one. The two extension pipes 208 are respectively communicated with the first heat exchange pipe 201 and the second heat exchange pipe 202, and diversion cavities 204 are formed between the first heat exchange pipe 201 and the second heat exchange pipe 202 and the corresponding contact fins 203. The extension pipe 208 to which the first heat exchange pipe 201 belongs is arranged on the second one-way valve 105.

[0043] One end of the pressurizing pipe 104 is provided with a converging frame 3. Inside the converging frame 3, there is a rotating disk 301. On the rotating disk 301, there is a crankshaft 302. A number of traction rods 303 are distributed on the outer side of the crankshaft 302, and each traction rod 303 is movably connected to the crankshaft 302 through a shaft pin. One end of each of the multiple traction rods 303 is movably connected to a piston 304 through a shaft pin. When the driving motor 306 drives the fan 101 to operate, it can also drive the rotating disk 301 to rotate. When the rotating disk 301 rotates, it drives the crankshaft 302 to rotate. When the crankshaft 302 rotates, it will pull each traction rod 303 and the piston 304 to displace within the corresponding pressurizing pipe 104, and each piston 304 is respectively located within the corresponding pressurizing pipe 104. The piston 304 is slidably connected to the pressurizing pipe 104. There is a driving motor 306 on the fan 101. The output end of the driving motor 306 penetrates through the fan 101 and the support base 1 and extends to the rotating disk 301. One end of the converging frame 3 is provided with a through hole 305. The high-temperature medium in the pressurizing pipe 104 is transported to the first heat exchange pipe 201 through the second one-way valve 105.

[0044] A waste heat recovery method, using the above-mentioned waste heat recovery device for a centrifugal air compressor, includes the following steps;

[0045] Step 1, the staff installs the device at a designated position. When recovering and utilizing the heat generated during the operation of the air compressor, the heat exchange medium is injected into the second heat exchange pipe 202, and the high-temperature medium is injected into the converging frame 3 through the through hole 305. The driving motor 306 is started to drive the fan 101 to operate to extract the high-temperature medium in the converging frame 3 and shunt it through each first one-way valve 102, and the high-temperature medium is shunted into each conduit 103 and pressurizing pipe 104.

[0046] Step 2, when the driving motor 306 drives the fan 101 to operate, it can also drive the rotating disk 301 to rotate. When the rotating disk 301 rotates, it drives the crankshaft 302 to rotate. When the crankshaft 302 rotates, it will pull each traction rod 303 and the piston 304 to displace within the corresponding pressurizing pipe 104, so that the high-temperature medium in the pressurizing pipe 104 is transported to the first heat exchange pipe 201 through the second one-way valve 105.

[0047] Step 3, the high-temperature medium conducts heat exchange through the contact fins 203 on the outer side of the first heat exchange pipe 201 and the contact fins 203 on the outer side of the second heat exchange pipe 202 to achieve the function of waste heat recovery and utilization. At the same time, in order to further ensure the recovery efficiency and effect, an external motor drives the gearbox 207 to operate. When the gearbox 207 operates, it drives the extension pipe 208 and the driven gear 209 to rotate, and then makes the first heat exchange pipe 201 and the second heat exchange pipe 202 rotate, so that the contact fins 203 on each first heat exchange pipe 201 and the second heat exchange pipe 202 can contact each other one by one, and the heat generated by the friction between the two is also recovered by the heat exchange medium in the second heat exchange pipe 202.

[0048] Step 4, and through the method that the high-temperature medium is pressurized in the pressure increasing pipe 104 and discharged through the second one-way valve 105, it is easy to gather the high-temperature medium, making the discharge of the high-temperature medium more targeted.

[0049] When used according to the above structure, the heat exchange medium is injected into the second heat exchange pipe 202, the high-temperature medium is injected into the gathering frame 3 through the through hole 305, the driving motor 306 is started to drive the blower 101 to operate to extract the high-temperature medium in the gathering frame 3 and shunt it through each first one-way valve 102, and the high-temperature medium is shunted into each conduit 103 and the pressure increasing pipe 104. When the driving motor 306 drives the blower 101 to operate, it can also drive the turntable 301 to rotate. When the turntable 301 rotates, it drives the crankshaft 302 to rotate. When the crankshaft 302 rotates, it will pull each traction rod 303 and the piston 304 to displace in the corresponding pressure increasing pipe 104, so that the high-temperature medium in the pressure increasing pipe 104 is transported to the first heat exchange pipe 201 through the second one-way valve 105.

[0050] The high-temperature medium conducts heat exchange through the contact fins 203 on the outer side of the first heat exchange pipe 201 and the contact fins 203 on the outer side of the second heat exchange pipe 202, realizing the function of recovering the waste heat of the high-temperature medium. At the same time, in order to further ensure the recovery efficiency and effect, an external motor drives the gearbox 207 to operate. When the gearbox 207 operates, it drives the extension pipe 208 and the driven gear 209 to rotate, and then makes the first heat exchange pipe 201 and the second heat exchange pipe 202 rotate, so that the contact fins 203 on each first heat exchange pipe 201 and the second heat exchange pipe 202 can contact each other one by one, and the heat generated by the friction between the two is also recovered by the heat exchange medium in the second heat exchange pipe 202.

[0051] And through the method that the high-temperature medium is pressurized in the pressure increasing pipe 104 and discharged through the second one-way valve 105, it is easy to gather the high-temperature medium, making the discharge of the high-temperature medium more targeted.

[0052] Differing from the prior art, the present application discloses a waste heat recovery device and method for a centrifugal air compressor. Through the corresponding cooperation of various structures, the high-temperature medium is diverted into each conduit 103 and pressurization pipe 104, realizing the function of diverting and recycling the concentrated high-temperature medium. The high-temperature medium conducts heat exchange through the contact fins 203 on the outer side of the first heat exchange tube 201 and the contact fins 203 on the outer side of the second heat exchange tube 202, realizing the function of recovering and utilizing its waste heat. By the method of pressurizing the high-temperature medium in the pressurization pipe 104 and discharging it through the second one-way valve 105, it is easy to concentrate the high-temperature medium, making the discharge of the high-temperature medium more targeted. The first heat exchange tube 201 and the second heat exchange tube 202 are rotated, so that the contact fins 203 on each first heat exchange tube 201 and second heat exchange tube 202 can contact each other one by one, improving the heat exchange recovery efficiency and effect.

[0053] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A centrifugal air compressor waste heat recovery device, comprising a support base (1), characterized in that: The support seat (1) is provided with a diversion recovery component; The diversion recovery assembly comprises a fan (101) arranged on one side of the top of the support seat (1); a plurality of first one-way valves (102) are distributed on the fan (101), and each of the first one-way valves (102) is connected to the fan (101); a conduit (103) is provided on each of the plurality of first one-way valves (102), and a boosting pipe (104) is provided at one end of each of the conduits (103); A protective shell (2) is provided at one end of the boosting tube (104), a first heat exchange tube (201) is provided in the protective shell (2), a second heat exchange tube (202) is provided on one side of the first heat exchange tube (201), and a plurality of contact fins (203) are distributed on the outer sides of the first heat exchange tube (201) and the second heat exchange tube (202); A gathering frame (3) is provided at one end of the boosting pipe (104); The other end of the boosting pipe (104) is provided with a second one-way valve (105), the second one-way valve (105) is clamped with the boosting pipe (104), and a plurality of support rods (106) are plugged into the second one-way valve (105); The cross sections of the plurality of contact fins (203) are all arranged in a spiral shape, and the contact fins (203) are in contact with each other; One end of each of the second heat exchange tube (202) and the first heat exchange tube (201) is provided with a quick-connect connector (205), and one end of each of the quick-connect connectors (205) is provided with a discharge pipe port (206), and the quick-connect connector (205) is rotatably connected to the protective shell (2); A gear box (207) is provided at one end of the protective shell (2) away from the quick-connect connector (205), two extension tubes (208) are provided in the gear box (207), and each extension tube (208) is provided at one end of the first heat exchange tube (201) and the second heat exchange tube (202), respectively. The outer sides of the first heat exchange tube (201) and the second heat exchange tube (202) are both provided with mutually meshing driven gears (209); The two extension tubes (208) are respectively connected to the first heat exchange tube (201) and the second heat exchange tube (202), and a flow guide cavity (204) is provided between the first heat exchange tube (201) and the second heat exchange tube (202) and the corresponding contact fins (203). The extension tube (208) to which the first heat exchange tube (201) belongs is arranged on the second one-way valve (105); A rotating disk (301) is provided inside the gathering frame (3), a crankshaft (302) is provided on the rotating disk (301), a plurality of traction rods (303) are distributed outside the crankshaft (302), and each of the traction rods (303) is movably connected to the crankshaft (302) via an axle pin; One end of each of the plurality of traction rods (303) is movably connected to a piston (304) via an axle pin, and each of the pistons (304) is located in a corresponding boosting pipe (104), and the piston (304) is slidably connected to the boosting pipe (104).

2. The centrifugal air compressor waste heat recovery device according to claim 1, characterized in that: The fan (101) is provided with a driving motor (306), the output end of the driving motor (306) passes through the fan (101) and the support base (1) and extends to the rotary disk (301), and a through hole (305) is provided at one end of the gathering frame (3).

3. A waste heat recovery method, using the centrifugal air compressor waste heat recovery device according to any one of claims 1-2, characterized in that: The following steps are included: Step 1: inject the heat exchange medium into the second heat exchange tube (202), inject the high-temperature medium into the gathering frame (3) through the through hole (305), start the driving motor (306) to drive the fan (101) to extract the high-temperature medium in the gathering frame (3) and divert it through each first one-way valve (102), and divert the high-temperature medium into each conduit (103) and the boosting pipe (104); Step 2: When the turntable (301) rotates, the crankshaft (302) is driven to rotate. When the crankshaft (302) rotates, the traction rods (303) and pistons (304) are pulled to move in the corresponding boosting pipes (104), so that the high-temperature medium in the boosting pipes (104) is transported to the first heat exchange pipe (201) through the second one-way valve (105); Step three, the high-temperature medium passes through the contact fins (203) on the outside of the first heat exchange tube (201) and contacts the contact fins (203) on the outside of the second heat exchange tube (202) to perform heat conduction and heat exchange; Step 4: rotating the first heat exchange tube (201) and the second heat exchange tube (202) so that the contact fins (203) on each of the first heat exchange tube (201) and the second heat exchange tube (202) come into contact with each other one by one; In step five, the high-temperature medium is pressurized in the boosting pipe (104) and discharged through the second one-way valve (105), thereby gathering the high-temperature medium.

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