CN210530992U

CN210530992U - Noise reduction system of mute variable frequency generator

Info

Publication number: CN210530992U
Application number: CN201921677388.3U
Authority: CN
Inventors: 陈旭东; 朱士凯
Original assignee: Chongqing Zongshen General Power Machine Co Ltd
Current assignee: Chongqing Zongshen General Power Machine Co Ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-05-15
Anticipated expiration: 2029-10-09

Abstract

The utility model discloses a silence variable frequency generator noise reduction system, including bottom plate (1), at vertical right handle shell (5) that is provided with left handle shell (3) and takes right apron (4) in bottom plate (1) both sides, be provided with spark plug maintenance window (2) on right handle shell (5), be provided with spark plug maintenance cover (6) on spark plug maintenance window (2) the front end and the rear end of bottom plate (1) are provided with front panel (7) and shutter (8) respectively bottom plate (1) up end is provided with inhales sound cotton (9), it is corresponding with the air inlet that sets up the air filter in the cavity that left handle shell (3) and right handle shell (5) enclose to inhale sound cotton (9). The utility model has the advantages of simple structure, use reliably, low cost, adopt it to reduce the noise of complete machine, not only reduced noise, the exhaust noise of admitting air, but also improved whole machine leakproofness, improved user's travelling comfort.

Description

Noise reduction system of mute variable frequency generator

Technical Field

The utility model relates to a silence variable frequency generator, especially a silence variable frequency generator noise reduction system.

Background

At present, with the improvement of consumption level, people increasingly demand convenience and comfort of life, wherein, the portable mute frequency conversion generator is gradually favored by common consumers. Compared with an open-frame generator set, the low noise is a great characteristic of the mute variable frequency generator and is one of the product performances which are focused on by consumers.

In the development process of the existing mute variable frequency generator, technical developers pay more and more attention to relevant structural designs influencing noise, such as sound absorption and noise reduction designs on parts such as an air filter, an air inlet hose, an internal moving part of an engine, a silencer and the like, but the problem of noise reduction is not systematically considered in the whole machine, so that the problem of larger noise still exists in the working process of the whole machine, and the comfort of a user is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a silence variable frequency generator noise reduction system that can effectively reduce silence variable frequency generator complete machine noise.

The utility model aims at realizing through such technical scheme, a silence variable frequency generator noise reduction system, including the bottom plate the vertical right handle shell that is provided with left handle shell and takes the right side apron in bottom plate both sides be provided with spark plug on the right side handle shell and maintain the window be provided with spark plug maintenance cover on the spark plug maintenance window the front end and the rear end of bottom plate are provided with front panel and shutter respectively the bottom plate up end is provided with inhales the sound cotton, it is corresponding with the air inlet of the empty filter of setting in the cavity that left handle shell and right side handle shell enclose to inhale the sound cotton.

The cross sectional area of the sound absorption cotton is equal to or slightly larger than that of the air inlet of the air filter.

Further, inhale the sound noise reduction effect for the improvement the junction of right side apron and right handle shell and be located right handle shell and be provided with and inhale the sound cotton, inhale the sound cotton and fill in right handle shell and right side apron assembly gap.

Furthermore, the inner wall of the shutter and the lower part of the shutter are provided with sound absorption cotton.

In order to reduce the noise of spark plug department spark plug maintenance window border or spark plug maintenance lid inboard and be provided with along spark plug maintenance lid border and inhale the sound cotton, inhale the cotton packing of sound in spark plug maintenance lid and left handle shell assembly gap.

In order to reduce the noise that the complete machine side sent left handle shell both ends inboard and right handle shell both ends inboard all are provided with inhales the sound cotton, inhale the sound cotton and fill in left handle shell and right handle shell respectively with the assembly gap of front panel and shutter. Since the technical scheme is used, the utility model has the advantages of simple structure, use reliably, low cost, adopt it to reduce the noise of complete machine, not only reduced noise of admitting air, exhaust noise, but also improved the complete machine leakproofness, improved user's travelling comfort.

Drawings

The drawings of the utility model are as follows:

fig. 1 is a schematic structural view of the present invention;

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

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic view of the structure of the blind of the present invention;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

FIG. 6 is a schematic view of the left handle case of the present invention;

FIG. 7 is a cross-sectional view C-C of FIG. 6;

FIG. 8 is a schematic view of the right handle case of the present invention;

fig. 9 is a cross-sectional view taken along line D-D of fig. 8.

Detailed Description

The following detailed description of the embodiments of the present invention will be provided with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the embodiments will still fall within the scope of the present invention as claimed in the appended claims.

Example (b): as shown in fig. 1, 2, 3, a silence variable frequency generator noise reduction system, including bottom plate 1 the vertical left handle shell 3 that is provided with in 1 both sides of bottom plate and the right handle shell 5 of taking right apron 4 be provided with spark plug on the right handle shell 5 and maintain window 2 be provided with spark plug maintenance lid 6 on the spark plug maintenance window 2 the front end and the rear end of bottom plate 1 are provided with front panel 7 and shutter 8 respectively the 1 up end of bottom plate is provided with inhales the sound cotton 9, it is corresponding with the air inlet that sets up the air cleaner in the cavity that left handle shell 3 and right handle shell 5 enclose to inhale the sound cotton 9.

Wherein, the cross-sectional area of the sound-absorbing cotton 9 is equal to or slightly larger than the cross-sectional area of the air inlet of the air filter, so that the air inlet noise can be reduced.

Further, for noise reduction the junction of right side apron 4 and right handle shell 5 just is located and is provided with on the right handle shell 5 and inhales the sound cotton 9, inhale the cotton 9 of sound and fill in right handle shell 5 and right side apron 4 assembly gap.

As shown in fig. 4 and 5, in the present invention, sound absorbing cotton 9 is provided on the inner wall of the louver 8 and below the louver 8 in order to reduce intake noise.

In order to reduce the noise of spark plug department the spark plug is maintained 2 borders of window or the 6 inboards of spark plug dimension protecting cover and is provided with along the 6 borders of spark plug dimension protecting cover and inhales the sound cotton 9, inhale the cotton 9 packing of sound and adorn in spark plug dimension protecting cover 6 and the 3 assembly gaps of left handle shell.

As shown in fig. 6, 7, 8 and 9, in order to reduce the side noise, sound-absorbing cotton 9 is arranged on the inner sides of both ends of the left handle shell 3 and the inner sides of both ends of the right handle shell 5, and the sound-absorbing cotton 9 is filled in the assembly gaps between the left handle shell 3 and the right handle shell 5 and the front panel 7 and the blind window 8 respectively.

In a semi-anechoic test chamber, an LMS noise test analysis system is used, noise comparison tests are respectively carried out on the same mute frequency conversion generator original machine and the technical scheme according to an engineering method for measuring the sound power level of a noise source and the approximate free field above a reflecting surface by an 2005/88/CE noise instruction and an ISO3744-2010 acoustic sound pressure method, and the test data are as follows:

Claims

1. the utility model provides a silence variable frequency generator noise reduction system, includes bottom plate (1) both sides are vertical to be provided with left handle shell (3) and right handle shell (5) of taking right side apron (4) be provided with spark plug maintenance window (2) on right handle shell (5) be provided with spark plug maintenance lid (6) on spark plug maintenance window (2) the front end and the rear end of bottom plate (1) are provided with front panel (7) and shutter (8), characterized by respectively: the sound-absorbing cotton (9) is arranged on the upper end face of the bottom plate (1), and the sound-absorbing cotton (9) corresponds to an air inlet of an air filter arranged in a cavity enclosed by the left handle shell (3) and the right handle shell (5).

2. The noise reduction system of a silent variable frequency generator as claimed in claim 1, wherein: the cross section area of the sound absorption cotton (9) is equal to or slightly larger than that of the air inlet of the air filter.

3. The noise reduction system of a silent variable frequency generator as claimed in claim 2, wherein: the junction of right side apron (4) and right handle shell (5) just is located right handle shell (5) and is provided with on inhaling sound cotton (9), inhale sound cotton (9) and fill in right handle shell (5) and right side apron (4) assembly gap.

4. A noise reduction system for a silent frequency conversion generator as claimed in claim 3, wherein: and sound absorption cotton (9) is arranged on the inner wall of the shutter (8) and positioned at the lower part of the shutter (8).

5. The noise reduction system of a silent variable frequency generator as claimed in claim 4, wherein: spark plug maintenance window (2) border or spark plug maintenance lid (6) are inboard and be provided with along spark plug maintenance lid (6) border and inhale sound cotton (9), inhale sound cotton (9) and fill in spark plug maintenance lid (6) and left handle shell (3) assembly gap.

6. The noise reduction system of a silent variable frequency generator as claimed in claim 5, wherein: the left handle shell (3) both ends inboard and right handle shell (5) both ends inboard all is provided with inhales sound cotton (9), inhale sound cotton (9) and fill in left handle shell (3) and right handle shell (5) respectively with the assembly gap of front panel (7) and shutter (8).