CN211397706U

CN211397706U - Generator cooling air duct of variable frequency generator

Info

Publication number: CN211397706U
Application number: CN201922207149.8U
Authority: CN
Inventors: 罗昌国
Original assignee: China Lutian Machinery Co ltd
Current assignee: China Lutian Machinery Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-09-01
Anticipated expiration: 2029-12-10

Abstract

The utility model belongs to the technical field of variable frequency generator, refer in particular to a generator cooling air duct of variable frequency generator, including the case casing, be provided with engine and generator in the case casing, be provided with the silencer in the blast pipe of engine, the generator is including motor casing, the air vent has been seted up on motor casing's the rear end face, through drainage wind channel intercommunication between motor casing's the inner chamber and the blast pipe of engine, be provided with the wind channel body between motor casing's the rear end face and the internal face of case casing, the preceding port cover of wind channel body is on the air vent, the air inlet window has been seted up on the case casing that is located the rear end port. The utility model discloses a wind channel body makes air vent and air inlet window can directly communicate to the forced air cooling of realization generator and muffler, and adopts two window integrated configuration, effectively increases the intake of air current, makes the air current can get into the air outlet with more urgent wind speed, improves the cooling effect of generator, engine and muffler.

Description

Generator cooling air duct of variable frequency generator

The technical field is as follows:

the utility model belongs to the technical field of variable frequency generator, refer in particular to a variable frequency generator's generator cooling air duct.

Background art:

the frequency conversion generator set consists of a case shell, an engine, a generator, a frequency conversion controller, a silencer and other auxiliary devices. The engine converts the chemical energy of burning release into mechanical energy, and the generator converts mechanical energy into electric energy, and these both can all be accompanied by a large amount of heat energies in the course of the work, consequently, for guaranteeing whole generating set normal operating, the inside good ventilation environment that needs of housing.

At present, cooling fans for forced air cooling are arranged on an engine and a generator, external air flow can enter a case shell through an air inlet on the case shell through the cooling fans so as to cool the engine and the generator, and cooling of a silencer is realized by means of forced air cooling through air flow discharged from an exhaust end of the engine. However, because the engine and the generator are both arranged in the case with limited space, when the engine and the generator normally work, the phenomenon that the air inflow of the case is insufficient often occurs, and further the cooling effect of the generator, the motor and the silencer cannot achieve the ideal effect.

The invention content is as follows:

the utility model aims at providing a generator cooling air duct of generator that the generator induced drafts the cooling alone from the external world of case casing, the intake is sufficient and can carry out forced air cooling's variable frequency generator to generator and muffler in proper order.

The utility model discloses a realize like this:

the utility model provides a generator cooling air duct of variable frequency generator, includes the motor case casing, is provided with engine and generator in the motor case casing, is provided with the silencer in the blast pipe of engine, and the generator is provided with cooling fan including motor casing in the inner chamber of motor casing, has seted up the air vent on motor casing's the rear end face, through drainage wind channel intercommunication between motor casing's the inner chamber and the blast pipe of engine, be provided with the wind channel body between motor casing's the rear end face and the internal face of motor case casing, the preceding port of wind channel body covers on the air vent, is located and has seted up the air inlet window on the motor case casing of the rear.

In the generator cooling air duct of the variable frequency generator, the air inlet window sequentially comprises an upper air inlet window and a lower air inlet window from top to bottom.

In the generator cooling air duct of the variable frequency generator, the vertical partition plate is vertically arranged in the air duct pipe body and divides the air duct pipe body left and right, the vertical partition plate is provided with the air passing window, and the window area of the air passing window is smaller than the sum of the window area of the upper air inlet window and the window area of the lower air inlet window.

In the generator cooling air duct of the variable frequency generator, the air passing window is arranged at the bottom of the vertical partition plate, and the highest horizontal height of the air passing window is lower than the lowest horizontal height of the lower air inlet window.

In the generator cooling air duct of the variable frequency generator, the upper air inlet window and the lower air inlet window are provided with a plurality of transverse reinforcing ribs which are distributed along the transverse direction at equal intervals along the vertical direction, the transverse reinforcing ribs are arranged in an inclined manner, and the height of the front side edge of each transverse reinforcing rib is higher than that of the rear side edge of each transverse reinforcing rib.

In foretell generator cooling air duct of variable frequency generator, the preceding terminal surface of wind channel body is contradicted with motor casing's rear end face and is connected, and the rear end face of wind channel body is contradicted with the internal face of casing of case and is connected, and the rear end face outer fringe of wind channel body is outwards extended and is formed with protruding edge, has seted up the spliced eye in the protruding edge, is provided with the plug post with spliced eye adaptation on the internal face of casing of case.

In the generator cooling air duct of the variable frequency generator, the edge of the rear port of the air duct pipe body is recessed forward to form a positioning ring groove, and the inner wall surface of the housing of the generator case is provided with an annular protrusion inserted into the positioning ring groove.

In the generator cooling air duct of the variable frequency generator, the air duct body is made of a rubber material.

In the generator cooling air duct of the variable frequency generator, the length of the upper air inlet window is 90mm-100mm, and the height of the upper air inlet window is 30mm-40 mm.

In the generator cooling air duct of the variable frequency generator, the length of the lower air inlet window is 55mm-65mm, and the height of the lower air inlet window is 15mm-25 mm.

Compared with the prior art, the utility model outstanding advantage is:

1. the utility model can directly communicate the vent hole with the air inlet window through the air duct body, and the outside air flow can sequentially pass through the air inlet window, the air duct body and the vent hole to the inner cavity of the motor shell under the normal operation effect of the cooling fan, so as to realize the forced air cooling of the generator;

2. the utility model has the advantages that the inner cavity of the motor shell is communicated with the exhaust pipe of the engine through the drainage air duct, so that the air flow for forced air cooling of the generator can enter the exhaust pipe of the engine, and further forced air cooling is carried out on the silencer, and finally the air flow is discharged from the exhaust pipe of the engine to the outside, thereby forming a complete air flow circulation;

3. the utility model discloses a double window integrated configuration effectively increases the intake of air current for the air current can get into the air window with more urgent wind speed, improves the cooling effect of generator, engine and muffler.

Description of the drawings:

FIG. 1 is an exploded view of the housing and the generator of the present invention;

fig. 2 is an overall sectional view of the present invention;

FIG. 3 is a perspective view of the duct body of the present invention;

FIG. 4 is a perspective view of the housing of the cabinet of the present invention with air intake windows;

fig. 5 is an overall rear view of the present invention.

In the figure: 1. a housing of the chassis; 2. an engine; 3. an exhaust pipe; 4. a motor housing; 5. a cooling fan; 6. a vent hole; 7. a drainage air duct; 8. an air duct body; 9. an upper air inlet window; 10. a lower air inlet window; 11. a vertical partition; 12. a ventilation window; 13. transverse reinforcing ribs; 14. a raised edge portion; 15. inserting holes; 16. Inserting the column; 17. positioning the annular groove; 18. an annular projection; l1, length of upper air intake window; h1, the height of the upper air inlet window; l2, length of lower air intake window; h2, height of lower air inlet window.

The specific implementation mode is as follows:

the invention will now be further described with reference to specific embodiments, with reference to figures 1 to 5:

the utility model provides a generator cooling air duct of variable frequency generator, includes organic case casing 1, is provided with engine 2 and generator in the case casing 1, is provided with the silencer in the blast pipe 3 of engine 2, and the generator is provided with cooling fan 5 including motor casing 4 in the inner chamber of motor casing 4, has seted up air vent 6 on the rear end face of motor casing 4, through drainage wind channel 7 intercommunication between the inner chamber of motor casing 4 and the blast pipe 3 of engine 2, be provided with wind channel body 8 between the rear end face of motor casing 4 and the internal face of case casing 1, the preceding port of wind channel body 8 covers on air vent 6, has seted up the air inlet window on the case casing 1 that is located the rear port department of wind channel body 8. In the present embodiment, the intake window is provided on the rear side of the chassis housing 1.

The utility model can directly communicate the vent hole 6 with the air inlet window through the air duct body 8, and the outside air flow can sequentially pass through the air inlet window, the air duct body 8 and the vent hole 6 to the inner cavity of the motor shell 4 under the normal operation of the cooling fan 5, so as to realize the forced air cooling of the generator; meanwhile, the inner cavity of the motor shell 4 is communicated with the exhaust pipe 3 of the engine 2 through the drainage air channel 7, so that the airflow for performing forced air cooling on the generator can enter the exhaust pipe 3 of the engine 2 immediately, further the silencer is subjected to forced air cooling, and finally the airflow is discharged to the outside from the exhaust pipe 3 of the engine 2, and a complete airflow circulation is formed.

Wherein, compare prior art, not only increased the air-cooled airflow of muffler, simultaneously, still because the air current temperature after carrying out forced air cooling to the generator is less than the air current temperature of following the engine 2 exhaust, the cooling effect of muffler obtains showing and promotes.

In order to increase the flow rate and the air intake of the air flow, the air intake window sequentially comprises an upper air intake window 9 and a lower air intake window 10 from top to bottom.

Meanwhile, in order to enable the air flow to enter the motor shell 4 at a relatively urgent speed, a vertical partition plate 11 is vertically arranged in the air duct pipe body 8, the vertical partition plate 11 divides the air duct pipe body 8 left and right, an air passing window 12 is formed in the vertical partition plate 11, and the window area of the air passing window 12 is smaller than the sum of the window area of the upper air inlet window 9 and the window area of the lower air inlet window 10.

In addition, in order to prevent the air flow entering the air duct body 8 from the upper air inlet window 9 and the air flow entering the air duct body 8 from the lower air inlet window 10 from interfering with each other, the air inlet efficiency of the air flow is affected, the air passing window 12 is arranged at the bottom of the vertical partition plate 11, and the highest horizontal height of the air passing window 12 is lower than the lowest horizontal height of the lower air inlet window 10, so that the air flow can be combed in a sufficient space and orderly enters the air passing window 12.

In order to avoid external raindrops to enter the machine case shell 1, simultaneously, in order to strengthen the intensity of the upper air inlet window 9 and the lower air inlet window 10, the upper air inlet window 9 and the lower air inlet window 10 are provided with a plurality of transverse reinforcing ribs 13 which are distributed along the vertical direction at equal intervals, and the transverse reinforcing ribs 13 are obliquely arranged and the height of the front side of the transverse reinforcing ribs is higher than that of the rear side of the transverse reinforcing ribs.

In this embodiment, the concrete connection structure between the duct pipe 8 and the motor housing 4 and the case housing 1: the front end face of the air duct pipe body 8 is connected with the rear end face of the motor shell 4 in an abutting mode, the rear end face of the air duct pipe body 8 is connected with the inner wall face of the case shell 1 in an abutting mode, the outer edge of the rear end face of the air duct pipe body 8 extends outwards to form a convex edge portion 14, a plug hole 15 is formed in the convex edge portion 14, and a plug column 16 matched with the plug hole 15 is arranged on the inner wall face of the case shell 1.

Meanwhile, in order to improve the sealing performance between the air duct pipe body 8 and the cabinet housing 1, the edge of the rear end opening of the air duct pipe body 8 is recessed forward to form a positioning ring groove 17, and an annular protrusion 18 inserted into the positioning ring groove 17 is arranged on the inner wall surface of the cabinet housing 1.

Furthermore, the sealing performance between the air duct body 8 and the motor housing 4 and the housing case 1 is improved, and the air duct body 8 is made of a rubber material.

Furthermore, considering the size of the cabinet shell 1 on the existing market, the length L1 of the upper air inlet window is 90mm-100mm, and the height H1 of the upper air inlet window is 30mm-40 mm. In this embodiment, the length L1 of the upper air inlet window is 95mm, and the height H1 of the upper air inlet window is 35 mm.

Furthermore, the length L2 of the lower air inlet window is 55mm-65mm, and the height H2 of the lower air inlet window is 15mm-25 mm. In this embodiment, the length L2 of the upper air inlet window is 60mm, and the height H2 of the upper air inlet window is 20 mm.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a generator cooling air duct of variable frequency generator, includes organic case casing (1), is provided with engine (2) and generator in the case casing (1), is provided with the silencer in blast pipe (3) of engine (2), and the generator is provided with cooling fan (5) including motor casing (4) in the inner chamber of motor casing (4), has seted up air vent (6), its characterized in that on the rear end face of motor casing (4): the motor shell (4) is communicated with an exhaust pipe (3) of the engine (2) through a drainage air channel (7), an air channel pipe body (8) is arranged between the rear end face of the motor shell (4) and the inner wall face of the motor shell (1), a front port of the air channel pipe body (8) covers the air vent (6), and an air inlet window is formed in the motor shell (1) located at the rear port of the air channel pipe body (8).

2. The generator cooling air duct of the variable frequency generator according to claim 1, characterized in that: the air inlet window sequentially comprises an upper air inlet window (9) and a lower air inlet window (10) from top to bottom.

3. The generator cooling air duct of the variable frequency generator according to claim 2, characterized in that: vertical baffle (11) are vertically arranged in the air duct body (8), the vertical baffle (11) is used for separating the air duct body (8) from the left and the right, an air passing window (12) is formed in the vertical baffle (11), and the window area of the air passing window (12) is smaller than the sum of the window area of the upper air inlet window (9) and the window area of the lower air inlet window (10).

4. The generator cooling air duct of the variable frequency generator according to claim 3, wherein: the air passing window (12) is arranged at the bottom of the vertical partition plate (11), and the highest horizontal height of the air passing window (12) is lower than the lowest horizontal height of the lower air inlet window (10).

5. The generator cooling air duct of the variable frequency generator according to claim 2, characterized in that: go up air inlet window (9) and lower air inlet window (10) and be provided with a plurality of and along horizontal distribution's horizontal strengthening rib (13) along upper and lower direction equidistance, horizontal strengthening rib (13) slope sets up, and the height that highly is higher than the back side of its front side.

6. The generator cooling air duct of the variable frequency generator according to claim 1, characterized in that: the front end face of the air duct pipe body (8) is in butt joint with the rear end face of the motor shell (4), the rear end face of the air duct pipe body (8) is in butt joint with the inner wall face of the motor shell (1), the outer edge of the rear end face of the air duct pipe body (8) extends outwards to form a convex edge portion (14), the convex edge portion (14) is provided with a plug hole (15), and the inner wall face of the motor shell (1) is provided with a plug column (16) matched with the plug hole (15).

7. The generator cooling air duct of the variable frequency generator according to claim 6, wherein: the edge of the rear port of the air duct body (8) is recessed forwards to form a positioning ring groove (17), and an annular protrusion (18) inserted into the positioning ring groove (17) is arranged on the inner wall surface of the case shell (1).

8. The generator cooling air duct of the variable frequency generator according to claim 1, 6 or 7, characterized in that: the air duct body (8) is made of rubber materials.

9. The generator cooling air duct of the variable frequency generator according to claim 2, characterized in that: the length (L1) of the upper air inlet window is 90-100 mm, and the height (H1) of the upper air inlet window is 30-40 mm.

10. The generator cooling air duct of the variable frequency generator according to claim 2, characterized in that: the length (L2) of the lower air inlet window is 55mm-65mm, and the height (H2) of the lower air inlet window is 15mm-25 mm.