CN217849107U - A Generator Adopting Dual Air Channel Cooling Method - Google Patents

Abstract

The utility model discloses a generator adopting a double-air duct cooling method, which comprises a rear end cover with an opening on the front side, a stator assembly and a front end cover with an opening on the rear side, and the stator assembly includes a front side and a rear side The stator installation shells are all open, and the outer side of the stator installation shell is provided with a plurality of circular air inlets at equal intervals, the stator is installed on the inner wall of the stator installation shell, and a rotor assembly is placed horizontally on the inner side of the stator. The assembly includes a rotor shaft. The front side of the stator installation housing is fixedly installed with a front end cover fitted outside the stator. The rear side of the stator installation housing is fixedly installed with a rear end cover fitted outside the stator. The rear end cover and The front end covers are all rotatably sleeved on the outside of the rotor shaft. The design of the inner and outer fan blades and the air duct in the utility model help to increase the air volume, increase the heat dissipation area, make the heat dissipation more uniform and efficient, and can effectively reduce the overall temperature rise.

Description

A Generator Adopting Dual Air Channel Cooling Method

technical field

The utility model relates to the technical field of generators, in particular to a generator adopting a double-air-channel cooling method.

Background technique

The generator is cooled by an external fan, which has large air volume, large heat dissipation area, uniform heat dissipation, and high efficiency. However, when the axial length of the rotor is too large, the air volume will drop quickly due to the small air gap size, and the generator will Effective cooling is not available, which limits the maximum output power of the generator. Bearings and other devices are installed at both ends of the generator rotor assembly, and the internal fan can effectively dissipate heat from the generator without increasing the overall volume. However, since the air flow only passes through the stator and rotor ends, the heat dissipation is not uniform enough. When increasing the axial length of the motor to obtain greater output power, it often encounters insufficient heat dissipation due to insufficient air volume, which limits the maximum output power of the generator. Based on this, the utility model designs a generator mode using a double-air duct cooling method of internal and external fans at the same time to solve the above problems.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a generator adopting a double air duct cooling method.

In order to achieve the above object, the utility model adopts the following technical solutions:

A generator adopting a double-air-channel cooling method, comprising a rear end cover with openings on the front side, a stator assembly, and a front end cover with openings on the rear side, and the stator assembly includes a stator with openings on both the front side and the rear side The installation shell, the outer side of the stator installation shell is provided with a plurality of circular air inlets at equal intervals, the stator is installed on the inner wall of the stator installation shell, and a rotor assembly is placed horizontally on the inner side of the stator, and the rotor assembly includes a rotor Rotating shaft, the front side of the stator installation shell is fixedly installed with a front end cover set on the outside of the stator, and the rear side of the stator installation shell is fixedly installed with a rear end cover set on the outside of the stator, both the rear end cover and the front end cover are rotatably set On the outer side of the rotor shaft, the outer rear end fixed sleeve of the rotor shaft has an inner fan blade located in the rear end cover, and the outer front end fixed sleeve of the rotor shaft has an outer fan blade located at the front side of the front end cover.

Preferably, a first shaft mounting hole is provided at the center of the rear inner wall of the rear end cover, and a first mounting hole that is bonded and fixed to the outer side of the rotor shaft is fixed on the inner side wall of the first shaft mounting hole. bearings.

Preferably, the rear side of the rear end cover is provided with a plurality of rectangular air inlets in a ring shape, and the outer side of the rear end cover is provided with a plurality of rectangular air outlets in a ring shape that communicate with the corresponding rectangular air inlets.

Preferably, a second shaft installation hole is provided at the center of the front inner wall of the front end cover, and a second installation bearing that is bonded and fixed to the outer side of the rotor shaft is bonded and fixed on the inner inner wall of the second shaft installation hole. The front inner wall of the front cover is also provided with a plurality of fan-shaped air inlets in a ring shape.

Preferably, a first rotating shaft fixing hole fixedly fitted with the outer side of the rotor rotating shaft is opened at the front central position of the inner fan blade.

Preferably, a second shaft fixing hole is provided at the center of the front side of the outer fan blade, which is fixedly fitted with the outer side of the rotor shaft.

In the utility model, the design of the inner and outer fan blades and the air ducts of the generator adopting the double air duct cooling mode help to increase the air volume, increase the heat dissipation area, make the heat dissipation more uniform and efficient, and can effectively reduce the overall temperature rise.

Description of drawings

Fig. 1 is a left view explosion structure schematic diagram of a generator that adopts a double-air duct cooling method proposed by the utility model;

Fig. 2 is a perspective view of the rear end cover in Fig. 1;

Fig. 3 is a perspective view of the stator assembly in Fig. 1;

FIG. 4 is a perspective view of the front end cover in FIG. 1 .

In the figure: 1, rear end cover; 101, installation hole of first rotating shaft; 102, rectangular air outlet; 2, inner fan blade; 201, fixing hole of first rotating shaft; 3, rotor assembly; 301, rotor rotating shaft; 4, Stator assembly; 401, stator installation shell; 402, stator; 403, circular air inlet; 5, front cover; 501, second rotating shaft installation hole; 502, fan-shaped air inlet; Two shaft fixing holes.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1-4, a generator adopting a dual-air duct cooling method includes a rear end cover 1 with an opening on the front side, a stator assembly 4, and a front end cover 5 with an opening on the rear side. The stator assembly 4 includes a front The stator installation housing 401 with openings on the rear side and the outer side of the stator installation housing 401 are provided with a plurality of circular air inlets 403 at equal intervals. A rotor assembly 3 is placed horizontally. The rotor assembly 3 includes a rotor shaft 301. The front side of the stator installation housing 401 is fixedly installed with a front end cover 5 sleeved on the outside of the stator 402. The rear side of the stator installation housing 401 is fixed. A rear end cover 1 is installed on the outer side of the stator 402. The rear side of the rear end cover 1 is annularly provided with a plurality of rectangular air inlets, and the outer side of the rear end cover 1 is annularly provided with a plurality of corresponding rectangular air inlets. The rectangular air outlet 102, the rear end cover 1 and the front end cover 5 are both rotatably set on the outside of the rotor shaft 301, and the center of the rear inner wall of the rear end cover 1 is provided with a first shaft installation hole 101, the first shaft installation hole 101 On the inner side wall of the rotor shaft 301, a first mounting bearing is bonded and fixed to the outer side of the rotor shaft 301, so that the rear end cover 1 is rotated and mounted on the rotor shaft 301 through the first shaft mounting hole 101 and the first mounting bearing. On the outside, a second shaft mounting hole 501 is provided at the center of the front inner wall of the front end cover 5, and a second mounting bearing that is bonded and fixed to the outer side of the rotor shaft 301 is bonded and fixed on the inner wall of the second shaft mounting hole 501. , the front inner wall of the front end cover 5 is also provided with a plurality of fan-shaped air inlets 502 in a ring shape, so that the front end cover 5 is installed on the outside of the rotor shaft 301 through the second shaft installation hole 501 and the second installation bearing, and the rotor shaft 301 There is an inner fan blade 2 located in the rear end cover 1 in the outer rear end fixing sleeve of the inner fan blade 2, and a first rotating shaft fixing hole 201 fixedly fitted with the outer side of the rotor shaft 301 is opened at the front center of the inner fan blade 2, so that the inner fan blade The blade 2 is fixed and fitted on the outside of the rotor shaft 301 through the first shaft fixing hole 201. The outer front end of the rotor shaft 301 is fixedly fitted with an outer fan blade 6 located on the front side of the front end cover 5. The front center of the outer fan blade 6 is There is a second rotating shaft fixing hole 601 fixedly fitted with the outer side of the rotor rotating shaft 301, so that the outer fan blade 6 is fixed and fitted on the outer side of the rotor rotating shaft 301 through the second rotating shaft fixing hole 601. The inner and outer fan blades of the generator in the utility model The unique design and air duct help to increase the air volume, increase the heat dissipation area, make the heat dissipation more uniform and efficient, and effectively reduce the overall temperature rise.

In the utility model, when the generator is working, the inner fan blade 2 and the outer fan blade 6 rotate with the rotation of the rotor shaft 301 in the rotor assembly 3, and at this time two cooling air passages are formed, and the low-temperature air flows from the rear end The rectangular air inlet of the cover 1 enters the motor, and under the action of the internal fan 2, the high-temperature gas is discharged to the outside of the motor through the rectangular air outlet 102 of the rear end cover 1 through the rear end of the rotor assembly 3 and the rear end of the stator assembly 4 , to effectively cool the rear end of the rotor assembly 3 and the rear end of the stator assembly 4, where the first cooling air passage is formed; in addition, the low-temperature air enters the motor from the circular air inlet 403 in the middle of the stator installation housing 401, and then passes through the rotor The middle part of the assembly 3 enters the front of the motor through the air gap, passes through the front end of the stator assembly 4, passes through the fan-shaped air inlet 502 of the front cover 5, and under the action of the outer fan blade 6, the high-temperature gas is discharged to the outside of the motor, forming the first Two cooling air passages; under the action of the inner fan blade 2 and the outer fan blade 6, the heat generated by the stator assembly 4 and the rotor assembly 3 during the operation of the motor is continuously taken away, so that the motor is in an optimal working state. It can be seen that the design of the inner and outer fan blades of the generator and the air duct help to increase the air volume, increase the heat dissipation area, make the heat dissipation more uniform and efficient, and can effectively reduce the overall temperature rise.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (6)

1. A generator adopting a dual air duct cooling method, comprising a rear end cover (1) with an opening on the front side, a stator assembly (4) and a front end cover (5) with an opening on the rear side, characterized in that the The stator assembly (4) includes a stator installation housing (401) with openings on both the front and rear sides, and a plurality of circular air inlets (403) are provided at equal intervals on the outer side of the stator installation housing (401). A stator (402) is installed on the inner wall of the housing (401), and a rotor assembly (3) is placed horizontally on the inner side of the stator (402). The rotor assembly (3) includes a rotor shaft (301), and the stator mounting shell The front side of the body (401) is fixedly installed with a front end cover (5) set on the outside of the stator (402), and the rear side of the stator installation shell (401) is fixedly installed with a rear end cover set on the outside of the stator (402). (1), the rear end cover (1) and the front end cover (5) are both rotated and sleeved on the outside of the rotor shaft (301), and the outer rear end of the rotor shaft (301) is fixedly sleeved with a rear end cover (1) In the inner fan blade (2), the outer front end of the rotor shaft (301) is fixedly sleeved with an outer fan blade (6) positioned at the front side of the front end cover (5). 2. A generator adopting a double-air-channel cooling method according to claim 1, characterized in that, a first rotating shaft installation hole (101) is opened at the center of the rear inner wall of the rear end cover (1) , the inner side wall of the first rotating shaft mounting hole (101) is bonded and fixed with a first mounting bearing which is bonded and fixed with the outer side of the rotor rotating shaft (301). 3. A generator adopting a double-air-channel cooling method according to claim 1, characterized in that, the rear side of the rear end cover (1) is provided with a plurality of rectangular air inlets in a ring shape, and the rear end cover ( 1) There are a plurality of rectangular air outlets (102) connected to the corresponding rectangular air inlets in a circular shape on the outer side. 4. A generator adopting a double-air-channel cooling method according to claim 1, characterized in that, a second rotating shaft installation hole (501) is opened at the center of the front inner wall of the front end cover (5), The inner inner wall of the second rotating shaft mounting hole (501) is bonded and fixed with a second mounting bearing that is bonded and fixed with the outer side of the rotor rotating shaft (301). A fan-shaped air inlet (502). 5. A generator adopting a double-air-channel cooling method according to claim 1, characterized in that, at the center of the front side of the inner fan blade (2), there is a fixed sleeve with the outer side of the rotor shaft (301). The first rotating shaft fixing hole (201). 6. A generator adopting a double-air-channel cooling method according to claim 1, characterized in that, at the center of the front side of the outer fan blade (6), there is a fixed sleeve with the outer side of the rotor shaft (301). The second rotating shaft fixing hole (601).

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