CN118300331A - Air-cooled heat dissipation system and engine - Google Patents

Abstract

The invention discloses an air-cooled heat dissipation system and an engine, comprising: the device comprises a flow guiding structure and a driving rotor structure, wherein the flow guiding structure is connected with a generator, a flow guiding channel which is abutted to the side surface of the generator and a containing space which is sunken towards the direction far away from the generator are arranged in the flow guiding structure, and one end of a driving shaft extends into the containing space; the driving rotor structure is arranged in the accommodating space and is connected with the driving shaft; the driving rotor structure comprises a mounting assembly and a flow guiding piece, one end of the mounting assembly is connected with the driving shaft, the flow guiding piece is sleeved on the mounting assembly, the outer side of the flow guiding piece extends to the flow guiding channel, and the driving shaft drives the flow guiding piece to rotate through the mounting assembly so as to drive air of the flow guiding channel to flow. The high-speed rotation forced airflow of the fan blade disc circulates, and the cooling air is inhaled to cool, so that the cooling effect is obvious. The cooling medium is air, and power system circuit faults or damages caused by liquid leakage can be completely avoided.

Description

Air-cooled heat dissipation system and engine

Technical Field

The invention relates to the technical field of generator cooling, in particular to an air cooling heat dissipation system and a generator.

Background

In the field of aeroengines and ground gas turbines, with the gradual increase of requirements for fuel consumption due to the development of technology, generators applied to such engines are often required to have high rotational speed and high power density, and huge heat productivity is brought in the power generation process, and meanwhile, the generators cannot bear too high temperature as electrical products, so that such power systems are often required to be provided with heat dissipation devices.

At present, the power device is cooled by adopting modes such as natural heat dissipation cooling, circulating water cooling and the like according to different use environments. The natural cooling heat dissipation mode has limited heat dissipation capacity, and the circulating water cooling scheme needs a large amount of cooling liquid, so that the weight is large, and the use of the generator on a movable platform is limited; in addition, the cooling liquid cannot enter the motor rotor, cannot cool the generator, and only can cool the motor shell; and the circulating water cooling scheme is adopted, so that the risk of liquid leakage exists, and the generator can be caused to malfunction.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is that the existing natural cooling and heat dissipation mode has limited heat dissipation capacity, and the circulating water cooling scheme needs a large amount of cooling liquid, has larger weight and limits the use of the generator on the movable platform; in addition, the cooling liquid cannot enter the motor rotor, cannot cool the generator, and only can cool the motor shell; and the circulating water cooling scheme is adopted, so that the risk of liquid leakage exists, and the generator can be caused to malfunction.

To this end, the present invention provides an air-cooled heat dissipation system comprising:

The flow guiding structure is connected with the generator, a flow guiding channel which is abutted to the side face of the generator and a containing space which is sunken towards the direction far away from the generator are arranged in the flow guiding structure, and a driving shaft of the generator extends into the containing space;

The driving rotor structure is arranged in the accommodating space and is connected with the driving shaft;

The driving rotor structure comprises a mounting assembly and a flow guide piece, one end of the mounting assembly is connected with the driving shaft, the flow guide piece is sleeved on the mounting assembly, the outer side of the flow guide piece extends to the flow guide channel, and the driving shaft drives the flow guide piece to rotate through the mounting assembly so as to drive air of the flow guide channel to flow.

Optionally, the above-mentioned flow guiding structure includes a flow guiding component and an exhaust component; one end of the flow guiding component is connected with the generator, and the other end of the flow guiding component is connected with the exhaust component.

Optionally, the above-mentioned flow guiding assembly includes: the first guide shell and the second guide shell are annular, the first guide shell is sleeved on the periphery of the second guide shell through guide vanes, and a first gap is reserved between the first guide shell and the second guide shell.

Optionally, the first gap includes a first flow guiding section, a second flow guiding section and a third flow guiding section which are sequentially connected from a direction close to the generator to a direction far from the generator, and two ends of the second flow guiding section are respectively connected with the first flow guiding section and the third flow guiding section;

the radial section of the second diversion section forms a circular ring with gradually reduced width from the direction approaching to the generator to the direction far from the generator.

Optionally, the exhaust assembly includes: a first exhaust housing provided in a ring shape and a second exhaust housing provided in a bowl shape with an opening facing the drive shaft;

The first exhaust shell is connected with the first diversion shell, the second exhaust shell is connected with the second diversion shell, and a second gap is formed between the first exhaust shell and the second exhaust shell;

the first gap and the second gap form the flow guide channel, and the second flow guide shell and the second exhaust shell enclose the accommodating space.

Optionally, the exhaust assembly further includes a rectifier disposed on a side of the second gap adjacent to the first gap to integrate the airflow flowing into the second gap from the first gap.

Optionally, an installation groove is formed in an inner wall of one end of the first diversion shell, which is close to the first exhaust shell; the mounting groove is used for mounting the first exhaust casing or the rectifier.

Optionally, the mounting assembly includes:

The connecting shaft is flexibly connected with the driving shaft at one end close to the driving shaft, and the axis of the connecting shaft is coincident with the axis of the driving shaft;

The blade disc is sleeved on the connecting shaft and is used for installing the guide piece;

Wherein an annular space is provided between the second flow guiding housing and the second exhaust housing, and the outer peripheral side of the vane disk extends into the annular space.

Optionally, the above-mentioned mounting assembly further includes:

The rotating bearing is arranged on one side, close to or far away from the driving shaft, of the blade disc, the inner side of the rotating bearing is connected with the connecting shaft, and the outer side of the rotating bearing is connected with the second diversion shell;

The locking structure is sleeved on the connecting shaft, and the locking structure is arranged on one side, far away from the rotating bearing, of the blade disc.

An engine comprises a generator and the air-cooling heat dissipation system; the air cooling heat dissipation system is arranged on the side face of the generator.

The technical scheme provided by the invention has the following advantages:

1. The embodiment provides an air-cooled heat dissipation system, including: the device comprises a diversion structure and a driving rotor structure, wherein the diversion structure is arranged on the side edge corresponding to the axial direction of a driving shaft of the generator, the diversion structure is fixed on a shell of the generator through a screw, a diversion channel and a containing space are arranged in the diversion structure, a gap and a hole are formed in the shell of the generator, the right end of the diversion channel is attached to a side shell of the generator, the containing space is concavely arranged towards the direction away from the generator, namely, the containing space is a conical space concaved leftwards, and the left side of the driving shaft extends into the containing space. The driving rotor structure comprises a guide piece and a mounting assembly, wherein the guide piece is a fan, the mounting assembly is also mounted in the accommodating space, and the right end of the mounting assembly is connected with the left end of the driving shaft; the guide piece is sleeved at the right end of the installation component, and the station area of the guide piece is positioned in the guide channel.

When the generator works, the high-speed rotation of the driving shaft drives the flow guide piece to rotate at a high speed through the mounting assembly, the flow guide piece rotates to drive air in the flow guide channel to flow, cooling air flow enters from the right side of the generator shell under the high-speed rotation of the flow guide piece blade disc, enters the generator through a gap or a hole of the generator shell to take away heat, enters the flow guide channel, is acted by the flow guide piece blade and is discharged to the outside. According to the scheme, the high-speed rotation forced airflow of the fan blade disc enables hot air in the generator to be discharged, cold air is sucked to cool the generator, meanwhile, continuous cooling airflow flow of more than 0.2kg/s can be achieved per kilogram of weight of the flow guiding piece due to the high rotation speed characteristic of the flow guiding piece, and compared with the existing scheme, the weight reduction is not less than 50%, the cooling effect is obvious, and the cooling device can be applied to a power system with larger heating value. The cooling medium is air, the shell and the interior of the generator can be cooled through the flow path design, the temperatures of the interior and the rotor of the generator are effectively reduced, the internal temperature rise of the generator with unit megawatt power is not more than 10 ℃, and the use limit of the generator is improved; and the circuit failure or damage of the power system caused by liquid leakage can be completely avoided.

2. The ring mouth of first exhaust casing right-hand member corresponds the setting with the ring mouth of first water conservancy diversion casing left end, the opening of second exhaust casing right-hand member corresponds the setting with the ring mouth of second water conservancy diversion casing left end, the rectifier sets up the right-hand member at exhaust assembly, specifically, the outside of rectifier passes through the bolt fastening at first exhaust casing's right-hand member, the inboard of rectifier passes through the bolt fastening at second exhaust casing's right-hand member, then with the exhaust assembly of installation completion on the water conservancy diversion subassembly, specifically, the mounting groove has been seted up to first exhaust casing's left end inner wall, first exhaust casing can directly peg graft in the mounting groove, preferably the outside right-hand member of rectifier is inserted and is established in the mounting groove, and pass through the bolt fastening at first water conservancy diversion casing's left end, the inboard right-hand member of rectifier passes through the bolt fastening at second water conservancy diversion casing's right-hand member. The rectifier is fixed with the first guide shell of the guide assembly in a matched mode and is used for rectifying air flow conveyed by the guide piece disc of the driving rotor structure, vortex generation is reduced, and accordingly exhaust loss is reduced and circulation efficiency of the guide piece is improved. The second exhaust housing can prevent the formation of an exhaust low speed region after the rectifier, further reducing exhaust loss. The shape of the exhaust assembly is generally adjusted adaptively according to the power cabin or the installation environment of the generator, the design of the appearance is flexible and various, and the exhaust assembly has the main function of exhausting hot air in the cooling fan to the outside of the power cabin or the installation environment so as to guide exhaust air flow.

3. The first gap comprises a first diversion section, a second diversion section and a third diversion section which are sequentially connected from a direction close to the generator to a direction far away from the generator, the second diversion section is arranged between the first diversion section and the third diversion section, two ends of the second diversion section are respectively connected with the first diversion section and the third diversion section, the annular width of an annular section formed by the longitudinal section of the first diversion section is larger than that of an annular section formed by the longitudinal section of the third diversion section, and the annular width of an annular section formed by the radial section of the second diversion section is gradually reduced from a direction close to the generator to a direction far away from the generator. Through above-mentioned setting, utilize first water conservancy diversion section to cover the side of generator for the air current can fully dispel the heat to the inside of generator, and in the hot air current can enter into the water conservancy diversion passageway completely, the change of rethread second water conservancy diversion section and third water conservancy diversion section reduces whole forced air cooling heat dissipation system, can be applicable to compact type's generator.

4. The connecting shaft is flexibly connected with the driving shaft of the generator through flexible connecting structures such as a coupler, a diaphragm coupler or a floating shaft, and the flexible connecting structures can effectively avoid the mutual vibration between the cooling fan rotor and the motor rotor. The rotating bearing generally adopts a single-fulcrum or multi-fulcrum high-speed grease lubrication bearing to support the whole driving rotor structure, the rotating speed of the high-speed grease lubrication bearing can reach over 20000RPM, the high rotating speed requirement of the flow guide piece can be adapted, and under the condition that the high rotating speed of the driving rotor structure is ensured, an additional lubricating oil system is not needed for lubricating and cooling the bearing, the rotor supporting structure is simple and reliable, and the cost and the structural complexity are reduced. The blade disc is generally matched with the connecting shaft through a spline or interference fit or transmits torque, and is fastened with the connecting shaft into a whole through a locking structure, and the locking structure can select a self-locking nut or a common nut and locking plate structure for the shaft. The scheme adopts an independent driving rotor structure and adopts a flexible connection structure with the generator, so that the mutual resonance influence between the cooling fan and the rotor system of the power system is avoided, the energy input of the cooling fan is directly derived from the mechanical energy of the generator, and compared with the energy utilization mode of 'mechanical energy-electric energy-mechanical energy' adopting a low-speed motor fan heat dissipation scheme, the efficiency is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram illustrating the overall installation of an air-cooled heat dissipation system and a generator provided by the present invention;

FIG. 2 is a schematic structural view of a flow guiding assembly according to the present invention;

FIG. 3 is a schematic view of an exhaust assembly provided in the present invention;

FIG. 4 is a schematic view of a driving rotor structure according to the present invention;

Reference numerals illustrate:

A 1-generator; 11-a drive shaft;

2-a flow guiding structure; 21-a flow guiding assembly; 211-a first deflector housing; 212-a second deflector housing; 213-first gap; 2131-a first deflector segment; 2132-a second deflector segment; 2133-a third deflector segment; 214-guide vanes; 22-an exhaust assembly; 221-a first exhaust housing; 222-a second exhaust housing; 223-second gap; 224-rectifier; 23-annular space; 24-diversion channel; 25-accommodating space;

3-driving a rotor structure; 31-mounting an assembly; 311-connecting shaft; 312-bladed disc; 313-a rotating bearing; 314-locking structure; 32-a flow guide;

4-mounting groove.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Example 1

The present embodiment provides an air-cooled heat dissipation system, as shown in fig. 1 to 4, including: the air guide structure 2 and the driving rotor structure 3, the air guide structure 2 is arranged on the side corresponding to the axial direction of the driving shaft 11 of the generator 1, the air guide structure 2 is fixed on the shell of the generator 1 through a screw, an air guide channel 24 and a containing space 25 are arranged in the air guide structure 2, a gap and a hole are formed in the shell of the generator 1, as shown in fig. 1 and 2, the right end of the air guide channel 24 is attached to the side shell of the generator 1, the containing space 25 is concavely arranged towards the direction far away from the generator 1, namely, the containing space 25 is a conical space concaved leftwards, and the left side of the driving shaft 11 extends into the containing space 25. The driving rotor structure 3 comprises a guide piece 32 and a mounting component 31, the guide piece 32 is a fan, the mounting component 31 is also mounted in the accommodating space 25, and the right end of the mounting component 31 is connected with the left end of the driving shaft 11; the guide piece 32 is sleeved at the right end of the mounting assembly 31, and a station area of the guide piece 32 is positioned in the guide channel 24. The arrows in fig. 1 indicate the direction of flow of air.

When the generator 1 works, the high-speed rotation of the driving shaft 11 drives the flow guide member 32 to rotate at a high speed through the mounting assembly 31, the flow guide member 32 rotates to drive air in the flow guide channel 24 to flow, and cooling air flows in from the right side of the shell of the generator 1 under the high-speed rotation of the blade disc 312 of the flow guide member 32, passes through a gap or a hole of the shell of the generator 1, enters the generator to take away heat, enters the flow guide channel 24, is acted by blades of the flow guide member 32, and is discharged to the outside. The high-speed rotation forced airflow circulation of the fan blade disc 312 is adopted in the scheme, so that hot air in the generator 1 is discharged, meanwhile, cold air is sucked for cooling, meanwhile, due to the high rotating speed characteristic of the guide piece 32, the continuous cooling airflow flow of more than 0.2kg/s can be realized for the unit kg weight of the guide piece 32, and compared with the existing scheme, the weight reduction is not less than 50%, the cooling effect is obvious, and the cooling effect is applicable to a power system with larger heating value. The cooling medium is air, the shell and the interior of the generator 1 can be cooled through the flow path design, the temperature of the interior and the interior rotor of the generator is effectively reduced, the internal temperature rise of the generator 1 with unit megawatt power is not more than 10 ℃, and the use limit of the generator 1 is improved; and the circuit failure or damage of the power system caused by liquid leakage can be completely avoided.

In this embodiment, as shown in fig. 1 to 3, the flow guiding structure 2 includes a flow guiding assembly 21 and an exhaust assembly 22, the flow guiding assembly 21 is located between the exhaust assembly 22 and the generator 1, the left side of the flow guiding assembly 21 is connected to the exhaust assembly 22, and the right side of the flow guiding assembly 21 is connected to the generator 1. The flow guide assembly 21 includes: the first guide shell 211 and the second guide shell 212 are annular, and the first guide shell 211 and the second guide shell 212 are correspondingly arranged in shape; on a radial vertical section, the inner diameter of the first guide shell 211 is larger than the inner diameter of any second guide shell 212 at any position, namely, the first guide shell 211 is sleeved on the periphery of the second guide shell 212 through guide vanes 214, the inner sides of the guide vanes 214 are fixed on the outer surface of the second guide shell 212, the outer sides of the guide vanes 214 are fixed on the inner wall of the first guide shell 211, a gap between the first guide shell 211 and the second guide shell 212 is a first gap 213, and the whole first gap 213 is annular. The first gap 213 preferably encloses the sides of the generator 1. The exhaust assembly 22 includes: a first exhaust casing 221 and a second exhaust casing 222, the first exhaust casing 221 being provided in a ring shape, the second exhaust casing 222 being provided in a bowl shape with an opening toward the drive shaft 11; the first exhaust casing 221 is connected to the first diversion casing 211, and the second exhaust casing 222 is connected to the second diversion casing 212, and a second gap 223 is formed between the first exhaust casing 221 and the second exhaust casing 222; the first gap 213 and the second gap 223 form a diversion channel 24, the second diversion shell 212 and the second exhaust shell 222 enclose a containing space 25, the second exhaust shell 222 is bowl-shaped, the right side of the second gap 223 is matched with the left side of the first gap 213 in shape, the left side of the second gap 223 is an exhaust channel with a circular cross section. The first exhaust casing 221 may be directly connected to the first guide casing 211, or a rectifier 224 may be disposed between the first exhaust casing 221 and the first guide casing 211 and at the right end of the second gap 223, that is, at the air inlet of the second gap 223. The first gap 213 and the second gap 223 constitute the diversion channel 24.

The first guide shell 211 and the second guide shell 212 can be designed according to the applicability of the structure of the generator 1, and the proper flow channel position is selected to be installed and matched after the heat dissipation requirement of the interior of the generator 1 is considered, the first guide shell 211 is generally connected and fixed with the shell of the generator 1 through a bolt structure, the first gap 213 is arranged to be attached to the side edge of the generator 1, and the air flow generated by the guide piece 32 can take away the heat in the generator 1 or put the whole generator 1 into the flow channel of the air cooling heat dissipation system. The air flow after heat exchange passes through the right end of the first gap 213 and is transferred to the left end of the first gap 213. Corresponding support plates are fixedly arranged in the diversion channel 24 to change the flow direction of the internal air flow.

The ring opening at the right end of the first exhaust casing 221 corresponds to the ring opening at the left end of the first guide casing 211, the opening at the right end of the second exhaust casing 222 corresponds to the ring opening at the left end of the second guide casing 212, the rectifier 224 is arranged at the right end of the exhaust assembly 22, specifically, the outer side of the rectifier 224 is fixed at the right end of the first exhaust casing 221 through a bolt, the inner side of the rectifier 224 is fixed at the right end of the second exhaust casing 222 through a bolt, then the installed exhaust assembly 22 is integrally installed on the guide assembly 21, specifically, the inner wall at the left end of the first exhaust casing 221 is provided with an installation groove 4, when the rectifier 224 is not arranged, the first exhaust casing 221 can be directly inserted into the installation groove 4, when the rectifier 224 is arranged, preferably, the outer right end of the rectifier 224 is inserted into the installation groove 4 and is fixed at the left end of the first guide casing 211 through a bolt, and the inner right end of the rectifier 224 is fixed at the right end of the second guide casing 212 through a bolt. The rectifier 224 is fixed with the first guiding housing 211 of the guiding assembly 21, and is used for rectifying the airflow conveyed by the guiding element 32 disc of the driving rotor structure 3, so as to reduce the generation of vortex, thereby reducing the exhaust loss and improving the circulation efficiency of the guiding element 32. The second exhaust housing 222 can prevent the formation of an exhaust low speed region after the rectifier 224, further reducing exhaust losses. The shape of the exhaust assembly 22 is generally adaptively adjusted according to the power cabin or the installation environment of the generator 1, and the design of the appearance is flexible and various, and the exhaust assembly has the main function of exhausting the hot air in the fan to the outside of the power cabin or the installation environment so as to guide the exhaust air flow.

Specifically, the first gap 213 includes a first guide segment 2131, a second guide segment 2132, and a third guide segment 2133 sequentially connected from a direction close to the generator 1 to a direction far from the generator 1, the second guide segment 2132 is disposed between the first guide segment 2131 and the third guide segment 2133, two ends of the second guide segment 2132 are respectively connected with the first guide segment 2131 and the third guide segment 2133, a ring width of a ring-shaped cross section formed by a longitudinal section of the first guide segment 2131 is larger than a ring width of a ring-shaped cross section formed by a longitudinal section of the third guide segment 2133, and a ring-shaped ring width formed by a radial section of the second guide segment 2132 is gradually reduced from the direction close to the generator 1 to the direction far from the generator 1. Through the above-mentioned setting, utilize first water conservancy diversion section 2131 to cover the side of generator 1 for the air current can fully dispel the heat to the inside of generator 1, and in the hot gas stream can enter into water conservancy diversion passageway 24 completely, the change of rethread second water conservancy diversion section 2132 and third water conservancy diversion section 2133 reduces the volume of whole forced air cooling system, can be applicable to compact type generator 1.

In the present embodiment, as shown in fig. 1 and 3, the mounting assembly 31 includes: a connection shaft 311 and a blade disc 312, the right end of the connection shaft 311, that is, the end near the driving shaft 11 is connected to the driving shaft 11 through a coupling, and the axis of the connection shaft 311 coincides with the axis of the driving shaft 11 to prevent the rotation of the connection shaft 311 from causing excessive centrifugal force to cause instability of the entire apparatus. The vane plate 312 is sleeved at one end of the connecting shaft 311 away from the coupling, the guide member 32, that is, the fan is fixed at the outer circumferential side of the vane plate 312, the annular space 23 is provided at the left side of the second guide housing 212, and the outer circumferential side of the vane plate 312 extends into the annular space 23 so that the entire guide member 32 is disposed in the guide passage 24. A rotary bearing 313 is mounted on the right side of the connection position of the vane disk 312 and the connection shaft 311, the inner side of the rotary bearing 313 is connected with the connection shaft 311, and the outer side of the rotary bearing 313 is connected with a bearing seat arranged on the second diversion shell 212; the locking structure 314 is provided at the left side of the connection position of the blade disc 312 and the connection shaft 311.

The connection shaft 311 is flexibly connected with the driving shaft 11 of the generator 1 through a flexible connection structure such as a coupling, a diaphragm coupling or a floating shaft, and the flexible connection structure can effectively avoid mutual vibration between the cooling fan rotor and the motor rotor. The rotating bearing 313 generally adopts a single-fulcrum or multi-fulcrum high-speed grease lubrication bearing to support the whole driving rotor structure 3, the rotating speed of the high-speed grease lubrication bearing can reach over 20000RPM, the high rotating speed requirement of the flow guide piece 32 can be adapted, and under the condition of ensuring the high rotating speed of the driving rotor structure 3, an additional lubricating oil system is not needed for lubricating and cooling the bearing, the rotor support structure is simple and reliable, and the cost and the structural complexity are reduced. The blade disc 312 is generally engaged with the connecting shaft 311 through a spline or interference fit or transmits torque, and is fastened with the connecting shaft 311 into a whole through a locking structure 314, wherein the locking structure 314 can select a self-locking nut or a common nut and locking plate structure for the shaft. The scheme adopts an independent driving rotor structure and adopts a flexible connection structure with the generator 1, so that the mutual resonance influence between the cooling fan and a rotor system of a power system is avoided, the energy input of the cooling fan is directly derived from the mechanical energy of the generator 1, and compared with the energy utilization mode of 'mechanical energy-electric energy-mechanical energy' adopting a low-speed motor fan heat dissipation scheme, the energy utilization mode is high in efficiency.

Example 2

The present embodiment provides an engine, as shown in fig. 1 to 4, including a generator 1 and an air-cooled heat dissipation system of embodiment 1; the air-cooled heat dissipation system is arranged on the side of the generator 1. When the generator 1 works, the air cooling heat dissipation system can dissipate heat generated by the generator 1, so that the working environment of the generator 1 is ensured. And since the generator 1 provided in this embodiment includes the air-cooled heat dissipation system in embodiment 1, it has all the advantageous effects possessed by the air-cooled heat dissipation system.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims (10)

1. An air-cooled heat dissipation system, comprising:

the device comprises a flow guiding structure (2), wherein the flow guiding structure (2) is connected with a generator (1), a flow guiding channel (24) which is abutted to the side surface of the generator (1) and a containing space (25) which is sunken towards the direction far away from the generator (1) are arranged in the flow guiding structure (2), and a driving shaft (11) of the generator (1) extends into the containing space (25);

the driving rotor structure (3), the driving rotor structure (3) is arranged in the accommodating space (25), and the driving rotor structure (3) is connected with the driving shaft (11);

The driving rotor structure (3) comprises a mounting assembly (31) and a flow guide piece (32), one end of the mounting assembly (31) is connected with the driving shaft (11), the flow guide piece (32) is sleeved on the mounting assembly (31) and the outer side of the flow guide piece (32) extends to the flow guide channel (24), and the driving shaft (11) drives the flow guide piece (32) to rotate through the mounting assembly (31) so as to drive air of the flow guide channel (24) to flow.

2. An air-cooled heat dissipation system according to claim 1, characterized in that the flow guiding structure (2) comprises a flow guiding assembly (21) and an exhaust assembly (22); one end of the flow guiding component (21) is connected with the generator (1), and the other end of the flow guiding component is connected with the exhaust component (22).

3. An air-cooled heat dissipation system according to claim 2, wherein the flow guiding assembly (21) comprises: the device comprises a first flow guiding shell (211) and a second flow guiding shell (212), wherein the first flow guiding shell (211) and the second flow guiding shell (212) are annular, the first flow guiding shell (211) is sleeved on the periphery of the second flow guiding shell (212) through flow guiding vanes (214), and a first gap (213) is reserved between the first flow guiding shell (211) and the second flow guiding shell (212).

4. An air-cooled heat dissipation system according to claim 3, wherein the first gap (213) comprises a first guide section (2131), a second guide section (2132) and a third guide section (2133) which are connected in sequence from the direction close to the generator (1) to the direction away from the generator (1), and two ends of the second guide section (2132) are connected with the first guide section (2131) and the third guide section (2133), respectively;

wherein the radial cross section of the second diversion section (2132) gradually reduces in width from approaching the generator (1) to separating from the generator (1).

5. An air-cooled heat dissipation system according to claim 3, wherein the exhaust assembly (22) comprises: a first exhaust casing (221) and a second exhaust casing (222), the first exhaust casing (221) being provided in a ring shape, the second exhaust casing (222) being provided in a bowl shape with an opening toward the drive shaft (11);

The first exhaust shell (221) is connected with the first diversion shell (211), the second exhaust shell (222) is connected with the second diversion shell (212), and a second gap (223) is formed between the first exhaust shell (221) and the second exhaust shell (222);

the first gap (213) and the second gap (223) form the diversion channel (24), and the second diversion shell (212) and the second exhaust shell (222) enclose the accommodating space (25).

6. An air-cooled heat dissipating system according to claim 5, wherein the exhaust assembly (22) further comprises a rectifier (224), the rectifier (224) being arranged at a side of the second gap (223) close to the first gap (213) to integrate the air flow from the first gap (213) into the second gap (223).

7. The air-cooled heat dissipation system according to claim 6, wherein an inner wall of one end of the first diversion housing (211) close to the first exhaust housing (221) is provided with a mounting groove (4); the mounting groove (4) is used for mounting the first exhaust casing (221) or the rectifier (224).

8. An air-cooled heat dissipation system according to any one of claims 5-7, wherein the mounting assembly (31) comprises:

A connecting shaft (311), wherein one end of the connecting shaft (311) close to the driving shaft (11) is flexibly connected with the driving shaft (11), and the axis of the connecting shaft (311) coincides with the axis of the driving shaft (11);

A blade disc (312), wherein the blade disc (312) is sleeved on the connecting shaft (311), and the blade disc (312) is used for installing the flow guide piece (32);

Wherein an annular space (23) is provided between the second flow guiding housing (212) and the second exhaust housing (222), and the outer peripheral side of the vane disk (312) extends into the annular space (23).

9. An air-cooled heat dissipation system according to claim 8, wherein the mounting assembly (31) further comprises:

A rotation bearing (313), wherein the rotation bearing (313) is arranged on one side of the blade disc (312) close to or far from the driving shaft (11), the inner side of the rotation bearing (313) is connected with the connecting shaft (311), and the outer side of the rotation bearing (313) is connected with the second diversion shell (212);

The locking structure (314) is sleeved on the connecting shaft (311), and the locking structure (314) is arranged on one side, far away from the rotating bearing (313), of the blade disc (312).

10. An engine, characterized by comprising a generator (1) and an air-cooled heat-dissipating system according to any of claims 1-9; the air cooling heat dissipation system is arranged on the side face of the generator (1).