CN101498308A

CN101498308A - Sound-deadening structure of compressor

Info

Publication number: CN101498308A
Application number: CNA2008100522576A
Authority: CN
Inventors: 于健勋
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2008-02-03
Filing date: 2008-02-03
Publication date: 2009-08-05

Abstract

The invention discloses a silencing structure of a compressor, which comprises a shell, wherein the shell comprises a cylinder body, an upper cover, a lower cover, and the like, a motor and compressor subassemblies are arranged in the shell, the motor comprises a stator, a rotor, a crank shaft, and the like, the compressor subassemblies comprise an air cylinder, an upper bearing, a lower bearing, and the like, and the diameters of discharging holes of compression media in the air cylinders are respectively larger than the diameters of discharging holes in the upper bearing and the diameters of discharging holes in the lower bearing. Because the invention adopts two-time expansion to reduce noise, the noise reducing effect is observably improved.

Description

The noise elimination structure of compressor

Technical field

The invention belongs to a kind of noise elimination structure of compressor, be specifically related to a kind of noise elimination structure that improves the compressor of acoustical absorptivity.

Background technique

As shown in Figure 1, 2, the compressor of prior art comprises housing 1, in the upper inside of housing 1 motor 20 is installed, at the downside of motor 20 compressor assembly 30 that is equipped with separated by a distance.Housing 1 is made up of cylindrical shell 11, loam cake 12 and lower cover 13 etc.Motor 20 is pressed on the inner peripheral surface that is fixed on cylindrical shell 11, and it is made up of stator 21, rotor 22 and rotary crankshaft 23 of being pressed into the center that is fixed on rotor 22 and transmitting rotating force etc.

Compressor assembly 30 is by cylinder 31, upper bearing 32 and lower bearing 33, at the inner eccentric part 23a that forms running shaft 23 of the compression volume (C) of cylinder 31, be positioned at the outside of eccentric part 23a, being provided with can rotation and rolling piston 35, one sides of revolution contact with the excircle upper thread of rolling piston 35 and be the impeller structures such as (not shown) of suction area and compressing area with the compression volume C zoning of the outer peripheral surface formation of the inner peripheral surface of cylinder 31 and rolling piston 35 by eccentric part 23a.The suction port (not shown) that also is communicated with the suction pipe in the suction area in the cylinder 31, and the tap hole 36 that is used to discharge compressed media in the compressing area.

As shown in Figure 2, in upper bearing 32, be provided with the tap hole 37 of compressed media, in lower bearing 33, be provided with the

tap hole

38,39 of compressed media, link at the downside of lower bearing 33 and to be fixed with baffler 34, be used to reduce the noise that the compressed media gas of discharging from tap hole 39 produces owing to the variation of pressure difference.For making dielectric gas be discharged to seal casinghousing 1 outside, on loam cake 12, be provided with discharge tube 50 by baffler 34.Bottom at seal casinghousing 1 also is provided with suction pipe 40.

But, in the noise elimination structure of the compressor of prior art, the diameter of three

tap holes

36,37,38 of the tap hole 38 that is provided with in tap hole 37 that is provided with in the tap hole 36 that is provided with in the cylinder 31, the upper bearing 32 and the lower bearing 33 is identical, the compressed media gas noise of reduce discharging has only the tap hole 39 from lower bearing 33 to discharge through once the splashing to rise and abate the noise of bafflers 34, and the effect that reduces noise is smaller.

Summary of the invention

The present invention is for the shortcoming that overcomes prior art proposes, and its objective is provides a kind of noise elimination structure that reduces the reasonable compressor of noise result.

Technological scheme of the present invention is: a kind of noise elimination structure of compressor, comprise housing, and housing is made up of cylindrical shell, loam cake and lower cover etc.Motor and compressor assembly are installed in housing, and motor is made up of stator, rotor and bent axle etc., and compressor assembly is made up of cylinder, upper bearing and lower bearing etc.Form tap hole in cylinder, form tap hole in upper bearing, form two tap holes at lower bearing, the diameter of the tap hole of the compressed media in the cylinder diameter than the tap hole in tap hole in the upper bearing and the lower bearing respectively is big.

The diameter of tap hole is respectively 1～2 times of the tap hole diameter in tap hole and the lower bearing in the upper bearing.

The diameter of tap hole is respectively 1.5 times of the tap hole diameter in tap hole and the lower bearing in the upper bearing.

The noise elimination structure of compressor of the present invention owing to adopted the reduction noise that rises of splashing for twice, reduces noise result and significantly improves.

Description of drawings

Fig. 1 is the longitudinal sectional drawing of compressor of the prior art;

Fig. 2 is the enlarged view of compressor assembly of the prior art;

Fig. 3 is the noise elimination structure longitudinal profile enlarged diagram of compressor of the present invention.

Wherein:

1 housing, 11 cylindrical shells, 12 loam cakes

13 lower covers, 20 motors, 21 stators

22 rotors, 23 bent axle 23a eccentric parts

30 compressor assemblies, 31 cylinders, 32 upper bearing (metal)s

33 lower bearings, 34 bafflers, 35 pistons

36 tap holes, 37 tap holes, 38 tap holes

39 tap holes, 40 suction pipes, 41 tap holes

42 tap holes, 43 tap holes, 50 discharge tubes

Embodiment

Below, be elaborated with reference to the noise elimination structure of drawings and Examples to compressor of the present invention:

Shown in Fig. 1,3, the noise elimination structure of compressor of the present invention comprises housing 1, in the upper inside of housing 1 motor 20 is installed, at the downside of motor 20 compressor assembly 30 that is equipped with separated by a distance.Housing 1 is made up of cylindrical drum 11, loam cake 12 and the lower cover 13 etc. of hollow.Motor 20 is pressed on the inner peripheral surface that is fixed on cylindrical shell 11, and it is made up of stator 21, rotor 22 and rotary crankshaft 23 of being pressed into the center that is fixed on rotor 22 and transmitting rotating force etc.

Compressor assembly 30 is by cylinder 31, upper bearing 32 and lower bearing 33, at the inner eccentric part 23a that forms running shaft 23 of the compression volume (C) of cylinder 31, be positioned at the outside of eccentric part 23a, being provided with can rotation and rolling piston 35, one sides of revolution contact with the excircle upper thread of rolling piston 35 and be the impeller structures such as (not shown) of suction area and compressing area with the compression volume C zoning of the outer peripheral surface formation of the inner peripheral surface of cylinder 31 and rolling piston 35 by eccentric part 23a.The suction port (not shown) that also is communicated with the suction pipe in the suction area in the cylinder 31, and the tap hole 41 that is used to discharge compressed media in the compressing area.

In upper bearing 32, be provided with the tap hole 42 of compressed media, in lower bearing 33, be provided with the tap hole 39,43 of compressed media, downside binding at lower bearing 33 is fixed with baffler 34, for making dielectric gas be discharged to seal casinghousing 1 outside, on loam cake 12, be provided with discharge tube 50 by baffler 34.Bottom at seal casinghousing 1 also is provided with suction pipe 40.

In order to reduce the noise that dielectric gas is discharged, big the diameter of the tap hole 43 in tap hole 42, the lower bearing 33 in the ratio upper bearing 32 of the diameter of the tap hole 41 of the compressed media in the cylinder 31 design.The diameter of tap hole 41 is respectively 1～2 times of tap hole 43 diameters in tap hole 42 and the lower bearing 33 in the upper bearing 32, and optimum value is 1.5 times.Such design, promptly metal (upper and cylinder adopt the diameter of different tap holes, make dielectric gas from the tap hole 39 of cylinder to baffler 34, through the reduction noise that rises of splashing for the first time; To tap hole 41, because the enlarged-diameter of tap hole, again through the reduction noise that rises of splashing for the second time, splashing for twice rises reduces noise result and significantly improves dielectric gas from the tap hole 43 of lower bearing.

Claims

1, a kind of noise elimination structure of compressor, comprise housing (1), housing (1) is by cylindrical shell (11), loam cake (12) and lower cover compositions such as (13), motor (20) and compressor assembly (30) are installed in housing (1), motor (20) is by stator (21), rotor (22) and bent axle compositions such as (23), compressor assembly (30) is by cylinder (31), upper bearing (32) and lower bearing compositions such as (33), it is characterized in that: in cylinder (31), form tap hole (41), in upper bearing (32), form tap hole (42), form two tap holes (39 at lower bearing (33), 43), the diameter than the tap hole (43) in tap hole (42) in the upper bearing (32) and the lower bearing (33) is big respectively for the diameter of tap hole (41).

2, the noise elimination structure of compressor according to claim 1 is characterized in that: the diameter of tap hole (41) is respectively 1～2 times of tap hole (43) diameter in tap hole (42) and the lower bearing (33) in the upper bearing (32).

3, the noise elimination structure of compressor according to claim 1 is characterized in that: the diameter of tap hole (41) is respectively 1.5 times of tap hole (43) diameter in tap hole (42) and the lower bearing (33) in the upper bearing (32).