CN215292652U

CN215292652U - Wind guide and heat dissipation mechanism of mute diesel generator

Info

Publication number: CN215292652U
Application number: CN202121995976.9U
Authority: CN
Inventors: 雷家扬; 吴允德
Original assignee: Taizhou Seeder Electronics Co ltd
Current assignee: Taizhou Seeder Electronics Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-12-24
Anticipated expiration: 2031-08-23

Abstract

The utility model belongs to the technical field of the generator, a silence type diesel generator's wind-guiding heat dissipation mechanism is related to, including the silence shell, be provided with the engine in the silence shell and the muffler that links to each other with the engine exhaust pipe, one side of engine is provided with centrifugal fan, centrifugal fan includes spiral case dustcoat and sets up the fan blade in the spiral case dustcoat, the fan blade cover is established on the output shaft of engine to rotate by engine drive, centrifugal fan center air inlet, spiral case air-out, its air intake and engine set up relatively, air outlet and external intercommunication. The utility model provides a hush air diesel generator's wind-guiding heat dissipation mechanism, its radiating effect is good, the noise is low, it is little to possess the space.

Description

Wind guide and heat dissipation mechanism of mute diesel generator

Technical Field

The utility model belongs to the technical field of the generator, a mute diesel generator's wind-guiding heat dissipation mechanism is related to.

Background

The existing generator is internally provided with an engine, a permanent magnet motor, a mute case and other devices (such as a diesel engine generator), an axial flow fan is generally used for sucking air to blow to the surface of an engine body for heat dissipation, and rib plates are cast or machined on the surface for heat dissipation. In addition, for some special generators, such as vehicle-mounted generators, the requirement on silence is high, and the structure of the generator is difficult to achieve the required silence requirement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, provide hush air diesel generator's wind-guiding heat dissipation mechanism, its radiating effect is good, the noise is low, it is little to possess the space.

In order to solve the above technical problem, the purpose of the present invention can be achieved by the following technical solutions:

air guide heat dissipation mechanism of silence type diesel generator, including the silence shell, be provided with the engine in the silence shell and the muffler that links to each other with the engine exhaust pipe, one side of engine is provided with centrifugal fan, centrifugal fan includes spiral case dustcoat and the fan blade of setting in the spiral case dustcoat, the fan blade cover is established on the output shaft of engine to by engine drive rotation, centrifugal fan center air inlet, spiral case air-out, its air intake and the relative setting of engine, air outlet and external intercommunication.

In the wind-guiding heat dissipation mechanism of the mute diesel generator, the muffler comprises a muffler shell, a muffler inlet pipe and a muffler outlet pipe, the muffler inlet pipe is communicated with the engine exhaust pipe, the muffler outlet pipe is communicated with the outside, a muffler outer cover is arranged on the outer side of the centrifugal fan, and the muffler shell is positioned in a muffler installation cavity surrounded by the muffler outer cover and the mute outer cover.

In the wind guiding and heat dissipating mechanism of the mute diesel generator, a connecting shell is arranged above the centrifugal fan and on the inner side of the silencer outer cover, and a connecting cavity in the connecting shell is respectively communicated with the air outlet of the centrifugal fan and the silencer installation cavity.

In the wind guiding and heat dissipating mechanism of the silent diesel generator, the connecting cavity is internally provided with a wind guide plate which guides wind at the air outlet of the centrifugal fan to the silencer installation cavity, the wind guide plate is covered at the air outlet of the centrifugal fan, and an opening is only arranged at one side close to the silencer installation cavity.

In foretell silence type diesel generator's wind-guiding heat dissipation mechanism, one side that the silence shell is close to the muffler is provided with a plurality of exhaust vent and an exhaust hole, be provided with a plurality of fresh air inlet around the silence casing, the exhaust vent communicates with muffler installation cavity mutually, the outer end of muffler outlet duct is located the exhaust hole, muffler intake pipe through connection cavity links to each other with the engine exhaust pipe, the muffler intake pipe can also include the connecting pipe to through connecting pipe and engine exhaust pipe fixed connection.

In foretell hush air diesel generator's wind-guiding heat dissipation mechanism, the exhaust vent sets up the latter half at the silence shell with the exhaust hole, the exhaust vent is the bar hole and is the ranks and distributes.

In the wind-guiding heat dissipation mechanism of the mute diesel generator, the outer side of the upper end of the outer cover of the silencer is inwards recessed and is provided with a step structure formed by an inclined plane, an L-shaped oil tank is arranged above the outer cover of the silencer and the connecting shell, and the lower end profile of the oil tank is matched with the upper end profile of the outer cover of the silencer and the upper end profile of the connecting shell.

In the above air guide and heat dissipation mechanism of the silent diesel generator, an axial flow fan for dissipating heat from the cylinder head portion is provided at one side of the engine.

In the wind guiding and heat dissipating mechanism of the mute diesel generator, the fan blades comprise a hub, a cover plate and a plurality of arc-shaped blades, the hub is fixedly connected with an output shaft of the engine, and the blades are circumferentially arranged on one side of the cover plate close to the engine at intervals.

Compared with the prior art, the utility model, following beneficial effect has:

1. the utility model discloses a built-in centrifugal fan dispels the heat, passes through among the air current discharge outside the outside air with the heat that the engine produced, reaches radiating purpose, has very good radiating effect. Because centrifugal fan embeds within the silence shell, and is equipped with the muffler of appropriate volume simultaneously, makes the utility model discloses has very low noise in operation.

2. The utility model discloses a set up many wind channels, can all provide fine heat dissipation to silence casing, engine box, engine cylinder head, muffler.

3. The utility model discloses optimized the overall arrangement to each subassembly, not only carried out meticulous overall arrangement to centrifugal fan, muffler, heat dissipation wind channel, still carried out brand-new design to the structure and the shape of oil tank, under the prerequisite that does not influence the radiating effect, the at utmost has reduced occupation space.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a perspective view of the present invention with a part of the mute housing removed;

fig. 3 is an internal perspective view of the present invention;

FIG. 4 is an internal perspective view of the present invention with the fuel tank and muffler cover removed;

fig. 5 is a perspective view of the centrifugal fan of the present invention;

reference numerals: 1. a mute housing; 2. an engine; 3. a centrifugal fan; 4. a volute housing; 5. a fan blade; 5a, a hub; 5b, a cover plate; 5c, blades; 6. a muffler housing; 7. a muffler inlet pipe; 8. a muffler outlet pipe; 9. a muffler outer cover; 10. connecting the shell; 11. an air deflector; 12. an air outlet; 13. an exhaust hole; 14. an air inlet hole; 15. an oil tank; 16. an axial flow fan.

Detailed Description

The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1 to 5:

the wind-guiding heat dissipation mechanism of the silent diesel generator comprises a silent shell 1, wherein an engine 2 and a silencer connected with an exhaust pipe of the engine 2 are arranged in the silent shell 1, a centrifugal fan 3 is arranged on one side of the engine 2, the centrifugal fan 3 comprises a volute housing 4 and a fan blade 5 arranged in the volute housing 4, the fan blade 5 is sleeved on an output shaft of the engine 2, preferably, the fan blade 5 and the output shaft of the engine 2 are in stable connection in a taper fit manner and driven to rotate by the engine 2, air is fed into the center of the centrifugal fan 3 and discharged from the volute, an air inlet of the centrifugal fan is arranged opposite to the engine 2, and an air outlet of the centrifugal fan is communicated with the outside; the silencer comprises a silencer shell 6, a silencer air inlet pipe 7 and a silencer air outlet pipe 8, the silencer air inlet pipe 7 is communicated with the exhaust pipe of the engine 2, the silencer air outlet pipe 8 is communicated with the outside, a silencer outer cover 9 is arranged on the outer side of the centrifugal fan 3, and the silencer shell 6 is located in a silencer installation cavity formed by the silencer outer cover 9 and the silencing shell 1 in an enclosing mode. When the centrifugal fan works, the centrifugal fan 3 discharges heat generated by the engine 2 into the outside air through air flow, so that the purpose of heat dissipation is achieved; the waste gas of the exhaust pipe of the engine 2 is exhausted after passing through the silencing air inlet pipe, the silencer shell 6 and the silencer air outlet pipe 8, so that the waste gas purification effect and the silencing effect are achieved.

Referring to fig. 2 and 4, in order to further optimize the path of the heat dissipation air duct, a connection housing 10 is disposed above the centrifugal fan 3 and inside the muffler outer cover 9, and a connection cavity in the connection housing 10 is respectively communicated with the air outlet of the centrifugal fan 3 and the muffler installation cavity. The hot air generated by the centrifugal fan 3 is discharged out of the machine through the air outlet, the connecting cavity, the silencer mounting cavity and the mute shell 1 in sequence.

Further, in order to guide the hot air discharged from the centrifugal fan 3 to the silencer installation cavity and make the hot air flow according to a set flow passage, an air deflector 11 for guiding the air at the air outlet of the centrifugal fan 3 to the silencer installation cavity is arranged in the connection cavity, the air deflector 11 is covered at the air outlet of the centrifugal fan 3, and an opening is only arranged at one side close to the silencer installation cavity.

Compare figure 1, in order to reach better radiating effect, one side that silence shell 1 is close to the muffler is provided with a plurality of exhaust vent 12 and an exhaust hole 13, be provided with a plurality of fresh air inlet 14 around silence casing 1, exhaust vent 12 is linked together with muffler installation cavity, the outer end of muffler outlet duct 8 is located exhaust hole 13, muffler intake pipe 7 through connection cavity links to each other with 2 blast pipes of engine, muffler intake pipe 7 can also include the connecting pipe to through connecting pipe and 2 blast pipe fixed connection of engine. Preferably, exhaust vent 12 and exhaust hole 13 set up in the latter half of silence shell 1, exhaust vent 12 is the bar hole and is ranks distribution, and the hot current that centrifugal fan 3 produced distributes among the air through exhaust vent 12.

In order to make the occupied space smaller, in this embodiment, a customized oil tank is adopted, referring to fig. 3, the outer side of the upper end of the muffler outer cover 9 is recessed inwards and is provided with a step structure formed by an inclined surface, an L-shaped oil tank 15 is arranged above the muffler outer cover 9 and the connecting shell 10, and the lower end profile of the oil tank 15 is matched with the upper end profiles of the muffler outer cover 9 and the connecting shell 10.

In order to better dissipate heat from the cylinder head of the engine 2, an axial fan 16 for dissipating heat from the cylinder head portion is provided on one side of the engine 2. The heat dissipation structure is similar to that of a traditional diesel engine.

Referring to fig. 5, the centrifugal fan 3 of this embodiment has a specific structure that the fan blade 5 includes a hub 5a, a cover plate 5b and a plurality of arc-shaped blades 5c, the hub 5a is fixedly connected to the output shaft of the engine 2, and the blades 5c are circumferentially disposed on one side of the cover plate 5b close to the engine 2 at intervals.

The present embodiment performs heat dissipation by the following means:

a first air duct: under the influence of the centrifugal fan 3, cold air around enters the interior of the mute box body 1 through the air inlet holes 14, the cold air dissipates heat of the running engine 2 box body, is sucked by the centrifugal fan 3, is exhausted out of the machine through the air outlet, the connecting cavity, the silencer mounting cavity and the air outlet holes 12 of the centrifugal fan 3 in sequence, and takes away heat of the silencer when passing through the silencer mounting cavity.

And the second air duct, namely the axial flow fan 16, sucks surrounding cold air to radiate the heat of the cylinder head of the engine 2 when in operation, and then merges into the first air duct to be discharged.

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

Claims

1. Mute diesel generator's wind-guiding heat dissipation mechanism, including silence shell (1), be provided with in silence shell (1) engine (2) and the muffler that links to each other with engine (2) blast pipe, its characterized in that, one side of engine (2) is provided with centrifugal fan (3), centrifugal fan (3) include spiral case dustcoat (4) and set up fan blade (5) in spiral case dustcoat (4), fan blade (5) cover is established on the output shaft of engine (2) to by engine (2) drive rotation, centrifugal fan (3) center air inlet, spiral case air-out, its air intake and engine (2) set up relatively, air outlet and external intercommunication.

2. The wind-guiding and heat-dissipating mechanism of the silent diesel generator as claimed in claim 1, wherein the silencer comprises a silencer housing (6), a silencer inlet pipe (7) and a silencer outlet pipe (8), the silencer inlet pipe (7) is communicated with an exhaust pipe of the engine (2), the silencer outlet pipe (8) is communicated with the outside, a silencer housing (9) is disposed outside the centrifugal fan (3), and the silencer housing (6) is located in a silencer installation cavity surrounded by the silencer housing (9) and the silent housing (1).

3. The wind guiding and heat dissipating mechanism of the silent diesel generator as claimed in claim 2, wherein a connecting housing (10) is disposed above the centrifugal fan (3) and inside the muffler housing (9), and a connecting cavity in the connecting housing (10) is respectively communicated with the air outlet of the centrifugal fan (3) and the muffler mounting cavity.

4. The wind guiding and heat dissipating mechanism of a silent diesel generator as claimed in claim 3, wherein a wind deflector (11) is disposed in the connecting cavity to guide the wind from the wind outlet of the centrifugal fan (3) to the silencer installation cavity.

5. The wind-guiding and heat-dissipating mechanism of the silent diesel generator as claimed in claim 3, wherein a plurality of air outlets (12) and an air outlet (13) are disposed on one side of the silent housing (1) close to the muffler, a plurality of air inlets (14) are disposed around the silent housing (1), the air outlets (12) are communicated with the muffler mounting cavity, the outer end of the muffler air outlet pipe (8) is disposed in the air outlet (13), and the muffler air inlet pipe (7) is connected with the engine (2) exhaust pipe through the connection cavity.

6. The wind guiding and heat dissipating mechanism of the silent diesel generator as claimed in claim 5, wherein said air outlet (12) and said air outlet (13) are disposed at the lower half of the silent housing (1), and said air outlet (12) is a strip-shaped hole and is distributed in rows and columns.

7. The wind guiding and heat dissipating mechanism of a silent diesel generator as claimed in claim 3, wherein the outer side of the upper end of the silencer housing (9) is recessed inwards and provided with a step structure formed by inclined planes, an L-shaped oil tank (15) is arranged above the silencer housing (9) and the connecting shell (10), and the lower end profile of the oil tank (15) is matched with the upper end profiles of the silencer housing (9) and the connecting shell (10).

8. The air guide and heat dissipation mechanism of a silent diesel generator as set forth in claim 1, wherein an axial fan (16) for dissipating heat from the cylinder head portion is provided on one side of said engine (2).

9. The wind guiding and heat dissipating mechanism of the silent diesel generator as claimed in claim 1, wherein the fan blade (5) comprises a hub (5a), a cover plate (5b) and a plurality of arc-shaped blades (5c), the hub (5a) is fixedly connected with the output shaft of the engine (2), and the blades (5c) are circumferentially arranged on one side of the cover plate (5b) close to the engine (2) at intervals.