CN216477566U

CN216477566U - Mute generator set

Info

Publication number: CN216477566U
Application number: CN202123161435.9U
Authority: CN
Inventors: 宾成胜; 曾嘉辉; 陈冬波; 彭健锋
Original assignee: Guangzhou Wanon Electric & Machine Co ltd
Current assignee: Guangzhou Wanon Electric & Machine Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-10
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses a silent generator set, which comprises a chassis, a generator component arranged on the chassis and a box body assembly; the box assembly includes the box body and sets up in this internal box of box and falls the structure of making an uproar, the structure of making an uproar includes thickness adjustable noise-absorbing layer and air bed is fallen to the box, the utility model discloses a silence generator set carries out the split through running noise to generating set to according to noise spectral characteristic design corresponding shock attenuation, fall the structure of making an uproar, make generating set operation emission noise low, have good silence function. Carry out special construction to air inlet system, cooling system and box assembly simultaneously and improve, make generating set have good silence performance, heat dispersion is not influenced simultaneously, promotes the whole quality of product.

Description

Mute generator set

Technical Field

The utility model relates to a generating set field, concretely relates to silence generator unit.

Background

With the rapid development of economy in China, various pollution problems come along. Such as environmental pollution, solid waste pollution, water pollution, noise pollution, etc. In fact, noise pollution is the most extensive environmental pollution in the four major pollution areas in the world today, and has the characteristics of being temporary, local, multiple and the like. Various countries, regions and industries have specific emission limit requirements on noise, and particularly, in European and American countries, hospital banks and other places, the requirements on noise emission are more strict. Therefore, in the diesel generator set industry, an ultra-silent type unit is urgently needed to meet the harsh environmental protection regulations of all countries.

In the existing diesel generating set industry, a mechanical fan is usually adopted for heat dissipation in a cooling mode of the set, namely, the output power of an engine is directly utilized, the cooling fan is in a fixed rotating speed, the blade type is a propeller type, the fundamental frequency of fan noise generated during working is difficult to control, and the noise is easily coupled with the vibration noise of the set to cause noise amplification. And the box structure is the opening form, and the noise will leak from the opening part in a large number, leads to the generating set whole noise height. In addition, the traditional generator set box body and the silencing element are designed according to a conventional method, the noise reduction frequency band has no pertinence, the noise of the whole generator set is high, and the existing market is difficult to meet.

In order to solve the above problems, a silent generator set needs to be designed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the mute generator set according to the technical scheme splits the operating noise of the generator set, and designs the corresponding damping and noise reduction structure according to the noise spectrum characteristic, so that the operating emission noise of the generator set is low, and the mute generator set has a good mute function. Carry out special construction to air inlet system, cooling system and box assembly simultaneously and improve, make generating set have good silence performance, heat dispersion is not influenced simultaneously, promotes the whole quality of product.

The utility model discloses a silent generator set, which comprises a chassis, a generator component arranged on the chassis and a box body assembly; the box assembly includes the box body and sets up in the box of box body internal structure of making an uproar falls, the structure of making an uproar falls in the box includes thickness adjustable sound-absorbing layer and air bed.

Further, the sound absorbing layer includes perforated plate, lower perforated plate and sets up the sound absorbing material between last perforated plate and lower perforated plate, forms between lower perforated plate and the box body the air bed, be provided with the locating lever that is used for passing lower perforated plate, sound absorbing material and last perforated plate in proper order on the box body.

Further, the generator assembly is provided with a cooling and noise reducing structure, and the cooling and noise reducing structure comprises a radiator, an air duct arranged on the radiator and a cooling fan arranged in the air duct; and a fan protective net is arranged on the end face of the air duct.

Furthermore, cooling fan is sickle type structure including a plurality of blades and blade, the blade tip is provided with the brush, the guide duct is horn shape structure.

Further, the generator assembly is provided with an air inlet noise reduction structure, and the air inlet noise reduction structure comprises an air inlet guide cover arranged on the box body, an air inlet louver grid arranged in the air inlet guide cover and an air inlet noise reduction sheet arranged in the box body; the air inlet louver grids are a plurality of blades and are uniformly distributed in the air inlet drainage cover.

Furthermore, the structures of the multiple air inlet louver grids are the same, an inclined included angle is formed between each air inlet louver grid and the horizontal direction, and two sides of each air inlet louver grid are bent along opposite directions to form bending parts.

Further, the air inlet silencing piece is arranged at the end part of the air inlet drainage cover, and an air outlet is formed in the box body.

The utility model has the advantages that:

according to the technical scheme, the mute generator set splits the running noise of the generator set, and designs the corresponding shock absorption and noise reduction structure according to the noise spectrum characteristic, so that the running emission noise of the generator set is low, and the mute generator set has a good mute function. Carry out special construction to air inlet system, cooling system and box assembly simultaneously and improve, make generating set have good silence performance, heat dispersion is not influenced simultaneously, promotes the whole quality of product.

Drawings

The invention will be further described with reference to the following figures and examples:

FIG. 1 is a schematic view of the internal structure of the generator set of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the noise reduction structure of the box body of the present invention;

FIG. 4 is a schematic view of the installation of the perforated plate according to the present invention;

FIG. 5 is a schematic view of the installation of the air intake louver grille of the present invention;

FIG. 6 is a schematic view of the air intake louver grille of the present invention;

FIG. 7 is a schematic view of the mounting structure of the heat sink of the present invention;

fig. 8 is a schematic structural view of the air duct of the present invention;

FIG. 9 is a schematic view of the air intake silencer of the present invention;

fig. 10 is a schematic view of a cooling fan according to the present invention;

fig. 11 is a schematic cross-sectional view of the air intake silencing sheet of the present invention.

Reference numerals:

the air conditioner comprises an engine 1, a generator 2, a radiator 3, blades 4, an air guide duct 5, a fan protective screen 6, an exhaust system 7, a box body 8, a chassis 9, a control system 10, an air inlet silencing sheet 11, an air inlet louver grid 13, an air inlet flow guide cover 14, a sound absorption material 15, an air layer 16, an upper perforated plate 17, a lower perforated plate 171, a hairbrush 19, a positioning rod 20 and a nut 21.

Detailed Description

FIG. 1 is a schematic view of the internal structure of the generator set of the present invention; FIG. 2 is a schematic view of the overall structure of the present invention; FIG. 3 is a schematic view of the noise reduction structure of the box body of the present invention; FIG. 4 is a schematic view of the installation of the perforated plate according to the present invention; FIG. 5 is a schematic view of the installation of the air intake louver grille of the present invention; FIG. 6 is a schematic view of the air intake louver grille of the present invention; FIG. 7 is a schematic view of the mounting structure of the heat sink of the present invention; fig. 8 is a schematic structural view of the air duct of the present invention; FIG. 9 is a schematic view of the air intake silencer of the present invention; fig. 10 is a schematic view of a cooling fan according to the present invention; FIG. 11 is a schematic cross-sectional view of the air intake silencer of the present invention; as shown in the figure, the silent generator set comprises a chassis 9, a generator component arranged on the chassis 9 and a box body assembly; the box assembly is provided with the box that is used for making an uproar to fall and falls the structure of making an uproar, the box assembly includes box body 8 and sets up the box in box body 8 and fall the structure of making an uproar, the box falls the structure of making an uproar and includes thickness adjustable sound-absorbing layer and air bed 16. The thickness of the absorption layer can be adjusted, the air layer 16 is a cavity formed by the sound absorption layer of the box body and the outer-layer box body metal plate, and the thickness can be adjusted through nuts; according to the technical scheme, the mute generator set splits the running noise of the generator set, and designs the corresponding shock absorption and noise reduction structure according to the noise spectrum characteristic, so that the running emission noise of the generator set is low, and the mute generator set has a good mute function. Carry out special construction to air inlet system, cooling system and box assembly simultaneously and improve, make generating set have good silence performance, heat dispersion is not influenced simultaneously, promotes the whole quality of product.

In this embodiment, the sound absorption layer includes perforated plate 17, lower perforated plate 171 and sets up sound absorbing material 15 between upper perforated plate and lower perforated plate, forms between lower perforated plate and the box body air layer 16, be provided with the locating lever 20 that is used for passing lower perforated plate, sound absorbing material and upper perforated plate in proper order on the box body. The box inner layer structure is by last perforated plate, sound absorbing material and perforated plate constitute down, fix on box body 8 promptly by locating lever 20 (screw rod), sound absorbing layer thickness accessible nut 21 adjusts, sound absorbing material 15 is the sound absorption sponge, fill in noise reduction piece and box, be used for the sound absorption, the noise gets into the noise elimination material layer earlier through the perforated plate, high frequency noise carries out energy consumption through the friction with noise elimination material, enter into the air bed behind the remaining low frequency noise, the air bed forms the syntonizer structure with the perforated plate, make the noise can make a round trip to vibrate at the syntonizer, thereby carry out energy consumption. Compared with a single-layer box body structure, the sound absorption and insulation frequency range is wider, and particularly, the low-frequency noise processing capacity is higher.

In this embodiment, the generator assembly is provided with a cooling and noise reducing structure, and the cooling and noise reducing structure includes a radiator 3, an air duct 5 mounted on the radiator 3, and a cooling fan disposed in the air duct 5; and a fan protective net 6 is arranged on the end face of the air duct 5. The radiator 3 is arranged at the front end of the engine and radiates heat by means of a cooling fan, and the fan protective screen 6 is of a grid mesh structure, is provided with a semi-elliptical notch in the middle and is fixed at the horn mouth end of the air duct 5 to play a role in safety protection.

In this embodiment, the cooling fan includes a plurality of blades 4, and the blades 4 are sickle-shaped structures, the end portions of the blades 4 are provided with brushes 19, and the air duct 5 is in a horn-shaped structure. The blade is hook type structure, and the brush is pasted to the blade apex, with engine output shaft, provides the cooling air, for the power assembly heat dissipation, the horn mouth structure is fixed on the radiator, plays the cooling air drainage, promotes the cooling fan performance, and the cooling fan of this scheme adopts high strength PPG plastic materials, hook type blade type structure, and every blade end is pasted and is had special brush structure, reduces blade and guide duct clearance, and fan operation noise obtains reducing by a wide margin. The air duct structure becomes loudspeaker form, and the horn mouth is towards the fan side, and the neck round mouth is fixed on the radiator, and the fan gets into from the horn mouth, is located neck end position, can effectually lead to the radiator core with the air current, and the thermal drag is little, improves heat dispersion, and the air duct structure of horn mouth shape has the effect that reduces the fan noise simultaneously.

In this embodiment, the generator assembly is provided with an air inlet noise reduction structure, and the air inlet noise reduction structure comprises an air inlet guide cover 14 mounted on the box body, an air inlet louver grid 13 mounted in the air inlet guide cover 14, and an air inlet noise reduction sheet 11 mounted in the box body; the air inlet louver grids 13 are a plurality of pieces and are uniformly distributed in the air inlet drainage cover. The air inlet guide cover 14 is fixed on the air inlet window and extends into the air inlet end of the silencing sheet, the air inlet louver gratings 13 are uniformly distributed along the vertical direction and form a certain angle in the horizontal direction, and the upper end and the lower end of the air inlet louver gratings are bent with a certain length.

In this embodiment, the multiple air inlet louver boards 13 have the same structure, the air inlet louver boards 13 form an inclined included angle with the horizontal direction, and two sides of the air inlet louver boards 13 are bent along opposite directions to form bent portions. The air inlet louver grille 13 forms a certain angle with the horizontal direction, the upper end and the lower end are bent by a certain length (as shown in figure 6), water vapor can be prevented from being sucked into the box body, and meanwhile, the air inlet louver grille has a certain sound insulation function; the louver grille and the air inlet flow guide cover 14 are integrated, external environment cold air enters from the air inlet louver, flow is guided to the inlet of the air inlet silencing piece through the air inlet flow guide cover, and the silencing piece introduces the cold air into the generator and the engine to carry out air inlet and cooling on the power assembly. In the technical scheme, the air inlet system comprises an upper part and a lower part, and the upper air inlet system comprises an upper shutter, an upper air inlet guide cover and an upper air inlet silencing sheet and is mainly used for providing fresh cooling air for the engine; the lower air inlet system comprises a lower shutter, a lower air inlet guide cover and a lower air inlet silencing sheet, and fresh cooling air is mainly provided for the generator.

In this embodiment, the air inlet noise reduction sheet 11 is arranged at the end of the air inlet guide cover 14, an air outlet is arranged on the box body, and the air inlet and the air outlet adopt a structure of single-side air inlet and single-side air exhaust, so that heat dissipation is facilitated. The air inlet silencing pieces 11 are Z-shaped structures and are uniformly distributed, and each silencing piece is composed of two perforated plates 17 and sound absorption materials 18.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A silence generator unit, its characterized in that: comprises a chassis, a generator component arranged on the chassis and a box body assembly; the box assembly includes the box body and sets up in the box of box body internal structure of making an uproar falls, the structure of making an uproar falls in the box includes thickness adjustable sound-absorbing layer and air bed.

2. The silent generator set of claim 1, wherein: the sound absorbing layer includes perforated plate, lower perforated plate and sets up the sound absorbing material between last perforated plate and lower perforated plate, forms between lower perforated plate and the box body the air bed is provided with the locating lever that is used for passing lower perforated plate, sound absorbing material and last perforated plate in proper order on the box body.

3. The silent generator set of claim 1, wherein: the generator assembly is provided with a cooling and noise reducing structure, and the cooling and noise reducing structure comprises a radiator, an air duct arranged on the radiator and a cooling fan arranged in the air duct; and a fan protective net is arranged on the end face of the air duct.

4. A silent generator set according to claim 3, wherein: the cooling fan comprises a plurality of blades and the blades are of sickle-shaped structures, brushes are arranged at the end parts of the blades, and the air guide cylinder is of a horn-shaped structure.

5. A silent generator set according to any of claims 1-4, characterized in that: the generator assembly is provided with an air inlet noise reduction structure, and the air inlet noise reduction structure comprises an air inlet guide cover arranged on the box body, an air inlet louver grid arranged in the air inlet guide cover and an air inlet noise reduction sheet arranged in the box body; the air inlet louver grids are a plurality of blades and are uniformly distributed in the air inlet drainage cover.

6. The silent generator set of claim 5, wherein: the structure of the plurality of air inlet louver grids is the same, an inclined included angle is formed between each air inlet louver grid and the horizontal direction, and two sides of each air inlet louver grid are bent along opposite directions to form bending parts.

7. The silent generator set of claim 6, wherein: the air inlet silencing piece is arranged at the end part of the air inlet drainage cover, and an air outlet is formed in the box body.