CN217558647U - Noise reduction structure of ship engine room fan - Google Patents

Abstract

The utility model relates to a fan equipment technical field discloses a structure of making an uproar falls in boats and ships cabin fan, the deck, deck upper end fixedly connected with fixing base, fixing base upper end fixedly connected with axial fan, axial fan right side wall intermediate position embedding install with axial fan electric connection's converter, the fixed cover in axial fan upper portion air intake has hollow post, and the equal fixed welding in both ends has solid fixed ring, two about the hollow post inner chamber gu fixed ring intra-annular vertical fixedly connected with falls the noise pipe. The utility model discloses, the air at the uniform velocity through the ventilation hole entering of hood lateral wall fall in the hollow post in fall the noise tube, the high-pressure blast volume with fall the noise that the inside pipe wall of making an uproar produced friction have partly by fall the cotton absorption digestion of inhaling of the intraductal cavity wall of making an uproar, there is certain cavity between noise pipe outer wall and the hollow post inner wall, the effectual noise of admitting air that solves another part makes the effectual isolated of noise of admitting air in hollow post, comparatively practical, be fit for extensively promoting and using.

Description

Noise reduction structure of ship engine room fan

Technical Field

The utility model relates to a fan equipment technical field specifically is a structure of making an uproar falls in boats and ships cabin fan.

Background

At present, the main engine of most ships has different requirements on air supply quantity by equipment in the engine room under different working conditions, and because the doors and the windows of the engine room are closed when the ship sails on the sea. The air required by equipment such as the cabin main engine is provided by a cabin special blower. The air supply quantity of the blower is selected according to the maximum ventilation quantity in all possible working conditions of the ship main engine when the ship is designed, so that the blower runs at the designed unique revolution under different ship working conditions. Therefore, the ship has the problem of excess ventilation capacity of the blower, which causes waste of electric energy and increases noise of the engine room.

Through retrieval application number 201922392057.1 a boats and ships fan device, including hood, axial fan and the inside installation base that is equipped with the wind channel, the hood is fixed axial fan's upper end, the axial fan lower extreme passes through installation base is fixed on the deck, installation base is round platform type structure, the big footpath end and the deck fixed connection of installation base, the wind channel and the cabin interior wind channel intercommunication of installation base. The fan device has the advantages of low noise of the air duct, improvement of the running safety and stability of the fan and the like.

However, the inventor finds that the technical scheme still has at least the following defects:

firstly, the ship fan runs at the designed unique revolution under different ship working states. Therefore, the ship has the problem of excess ventilation capacity of the blower, waste of electric energy is caused, and noise of the engine room is increased.

Secondly, this boats and ships fan air outlet gets into the wind channel in cabin behind the base inner wall, and high-pressure air produces the friction through the base inner wall, increases and produces huge noise.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a structure of making an uproar falls in marine engine room fan has solved the boats and ships that propose among the background art and has just had the surplus problem of air-blower ventilation ability, causes the waste of the electric power energy, has still increased the noise in cabin and high-pressure wind and produces the friction through base inner wall, increases the problem that produces huge noise.

In order to achieve the above object, the utility model provides a following technical scheme: a noise reduction structure of a marine engine room fan, comprising: the deck, deck upper end fixedly connected with fixing base, fixing base upper end fixedly connected with axial fan, and axial fan bottom air outlet run through fixing base centre through-hole department fixed seal cover and have connect the cabin ventilation pipe, axial fan right side wall intermediate position embedding install with axial fan electric connection's converter, the fixed hollow post that has cup jointed of axial fan upper portion air intake, the equal fixed welding in both ends has solid fixed ring, two about the hollow post inner chamber solid fixed ring intra-annular vertical fixedly connected with falls the noise pipe, falls the pipe inner wall fixedly connected with of making an uproar and inhales the sound cotton.

As an optimized implementation manner of the utility model, the fixed welding in noise reduction pipe upper portion has the filter screen.

As an optimized implementation mode of the utility model, the sealing ring is connected to the junction seal cover of axial fan and hollow column.

As a preferred embodiment of the present invention, the silencer is fixedly connected to the bottom of the cabin ventilation pipe.

As an optimized embodiment of the utility model, the hood has been screwed to hollow post upper end screw thread, and the ventilation hole has been seted up to the hood lateral wall is fixed.

As a preferred embodiment of the utility model, the outer wall of hood, axial fan and hollow post is stainless steel.

In a preferred embodiment of the present invention, the fixing base is made of a high elastic polymer.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model relates to a structure of making an uproar falls in marine engine room fan operates through the converter to axial fan right side wall in concrete working process, when the rotational speed of adjusting axial fan according to actual demand does not need too much amount of wind in marine engine room, has reduced some noise from the fan organism, after the noise that lasts high decibel of avoiding the fan of uniform velocity to bring, air-blower ventilation ability is surplus, causes the problem of the waste of the electric power energy.

2. The utility model relates to a structure of making an uproar falls in marine engine room fan, in concrete working process, it is intraductal to rotate the ventilation hole through the hood lateral wall that drives external air at the uniform velocity through axial fan and enter into the noise reduction in the hollow post, highly compressed amount of wind has partly to be absorbed the digestion by the sound of inhaling of falling the intraductal cavity wall of noise reduction with the frictional noise of falling the intraductal wall of noise reduction, there is certain cavity between noise outside of tubes wall and the hollow post inner wall, another partial noise of admitting air is solved in the effectual dissolution, make the effectual isolated in hollow post of noise of admitting air.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a front view of a noise reduction structure of a marine engine room fan according to the present invention;

fig. 2 is a schematic cross-sectional structural view of a noise reduction structure of a marine engine room fan according to the present invention;

fig. 3 is a schematic view of an internal structure of a hollow column of the noise reduction structure of the marine engine room fan of the present invention;

fig. 4 is a schematic view of an internal structure of a noise reduction pipe of a noise reduction structure of a marine engine room fan according to the present invention;

fig. 5 is the utility model relates to a structural schematic diagram overlooking of pipe of making an uproar falls in structure of making an uproar falls in marine engine room fan.

In the figure: 1. a deck; 2. an axial flow fan; 3. a fixed seat; 4. a hollow column; 5. a frequency converter; 6. A seal ring; 7. a hood; 8. a vent hole; 9. a cabin ventilation duct; 10. a muffler; 11. a noise reduction tube; 12. a fixing ring; 13. sound-absorbing cotton; 14. and (5) a filter screen.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a noise reduction structure for a marine engine room fan, comprising: the upper end of the deck 1 is fixedly connected with a fixed seat 3, the upper end of the fixed seat 3 is fixedly connected with an axial flow fan 2, the fixed seat 3 can prevent the axial flow fan from directly transmitting running noise of the axial flow fan 2 into a cabin through the deck 1 after the axial flow fan is directly contacted with the deck 1, and the fixed seat 3 indirectly consumes a part of the noise generated by the axial flow fan 2 during running; an air outlet at the bottom of the axial flow fan 2 penetrates through a through hole in the middle of the fixed seat 3, is fixedly sealed and connected with a cabin ventilating pipe 9 in a sealing manner, and is directly connected with the cabin ventilating pipe 9, so that the contact area of high-pressure air quantity and a cabin is effectively avoided, and the noise is reduced; a frequency converter 5 electrically connected with the axial flow fan 2 is embedded in the middle of the right side wall of the axial flow fan 2, the rotating speed of the fan is adjusted through the frequency converter 5, the rotating speed of the axial flow fan 2 is adjusted according to the actual wind demand, when excessive wind quantity is not needed in a ship cabin, part of noise is reduced from a fan body, and continuous high-decibel noise caused by the fan with uniform speed is avoided; fixed cover of 2 upper portions air intakes of axial fan has hollow post 4, the equal fixed welding in both ends has solid fixed ring 12 about the hollow post 4 inner chamber, two gu fixed ring 12 intra-annular vertical fixedly connected with falls the noise tube 11, fall 11 inner wall fixedly connected with of noise tube and inhale the sound cotton 13, highly compressed amount of wind has partly to be absorbed the digestion by the sound cotton 13 of inhaling of falling the noise tube 11 inner chamber wall, has certain cavity between 11 outer walls of noise tube and the hollow post 4 inner wall, the effectual noise of admitting air that separates another part, make the noise of admitting air effectual isolated in hollow post 4.

Referring to fig. 1-3, in the embodiment, the upper end of the hollow column 4 is screwed with the wind cap 7, the side wall of the wind cap 7 is fixedly provided with the vent hole 8, and the wind cap 8 effectively isolates external objects from entering the inner cavity of the axial flow fan 2, so that abnormal and aggravated high decibel noise caused by the blockage of the fan is avoided. In this setting, the outer wall of hood 7, axial fan 2 and hollow post 4 is stainless steel, avoids the corruption of steam to 2 shells of axial fan and inner chamber, and it is long when improving 2 uses of axial fan. Furthermore, the sealing ring 6 is hermetically sleeved at the joint of the axial flow fan 2 and the hollow column 4, so that the problem of air leakage caused by the influence of high-pressure air volume on the joint of the air inlet and the hollow column 4 when the axial flow fan 2 works is effectively avoided through the sealing ring 6, and a new noise air inlet is easy to appear after air leakage.

Referring to fig. 2-5, further, a filter screen 14 is fixedly welded on the upper portion of the noise reduction pipe 11, the filter screen 14 effectively isolates the influence of external dust and impurities on the inner cavity assembly of the axial flow fan, and the stable operation of the axial flow fan 2 is ensured by timely cleaning the impurities on the filter screen. In this setting, the noise when 9 rear ends of cabin ventilation pipes are used with wind is effectively reduced to the fixedly connected with muffler 10 in the bottom of cabin ventilation pipes, effectively keeps the operating personnel's in the cabin healthy. In the specific embodiment, the fixing base 3 is made of a high-elasticity polymer material, and the high-elasticity polymer material on the fixing base 3 can effectively relieve the vibration noise generated by the axial flow fan 2 during operation, and gives a certain buffering effect to the axial flow fan 2 during vibration, so that the influence of the noise generated during vibration on the interior of the cabin is reduced.

The working principle is as follows: in the specific working process, the frequency converter 5 on the right side wall of the axial flow fan 2 is operated, the rotating speed of the axial flow fan 2 is adjusted according to actual requirements, when excessive air volume is not needed in a cabin of a ship, a part of noise is reduced from the fan body, after continuous high-decibel noise brought by a uniform speed fan is avoided, the axial flow fan 2 rotates to drive outside air to enter the noise reduction pipe 11 in the hollow column 4 through the vent hole 8 on the side wall of the hood 7 at a constant speed, part of the high-pressure air volume and the friction noise of the noise reduction pipe 11 is digested by the sound absorption cotton 13 on the inner cavity wall of the noise reduction pipe 11, a certain cavity is formed between the outer wall of the noise reduction pipe 11 and the inner wall of the hollow column 4, and the other part of air inlet noise is effectively dissolved, so that the air inlet noise is effectively isolated in the hollow column 4; the high pressure amount of wind is in the cabin ventilation pipe 9 that flows into the air outlet through axial fan 2 air intake, through muffler 10 in the middle of cabin ventilation pipe 9, the noise that produces the high pressure amount of wind once more lasts cubic noise reduction, greatly reduced the noise of boats and ships cabin axial fan when moving, carry out effectual noise reduction from fan body, fan air intake and the three aspect of fan air outlet and handle, improved the efficiency of making an uproar, effectively avoided the waste of the electric power energy.

It should be noted that, the utility model relates to a structure of making an uproar falls in marine engine room fan, each is the part that general standard spare or technical staff in the field know, and its structure and principle all are that this technical staff all can learn or learn through conventional experimental method through the technical manual.

Claims (7)

1. The utility model provides a structure of making an uproar falls in marine engine room fan which characterized in that includes: deck (1), deck (1) upper end fixedly connected with fixing base (3), fixing base (3) upper end fixedly connected with axial fan (2), and axial fan (2) bottom air outlet run through fixing base (3) middle through-hole department fixed seal cup joints cabin ventilation pipe (9), axial fan (2) right side wall intermediate position embedding install with axial fan (2) electric connection's converter (5), the fixed cover of axial fan (2) upper portion air intake has hollow post (4), the equal fixed welding in both ends has solid fixed ring (12), two about hollow post (4) inner chamber gu fixed ring (12) intra-annular vertical fixedly connected with falls noise reduction pipe (11), fall noise reduction pipe (11) inner wall fixedly connected with and inhale sound cotton (13).

2. The noise reduction structure for the marine engine room fan according to claim 1, wherein: a filter screen (14) is fixedly welded on the upper part of the noise reduction pipe (11).

3. The noise reduction structure for the marine engine room fan according to claim 1, wherein: and a sealing ring (6) is sleeved at the joint of the axial flow fan (2) and the hollow column (4) in a sealing manner.

4. The noise reduction structure for the marine engine room fan according to claim 1, wherein: the bottom of the cabin ventilation pipe (9) is fixedly connected with a silencer (10).

5. The noise reduction structure for the marine engine room fan according to claim 3, wherein: the upper end of the hollow column (4) is screwed with a wind cap (7), and the side wall of the wind cap (7) is fixedly provided with a ventilation hole (8).

6. The noise reduction structure for the marine engine room fan according to claim 5, wherein: the outer walls of the blast cap (7), the axial flow fan (2) and the hollow column (4) are all made of stainless steel.

7. The noise reduction structure of the marine engine room fan according to claim 1, wherein: the fixed seat (3) is made of a high-elasticity polymer material.

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