CN102338094A

CN102338094A - Lower cover structure of closed type compressor

Info

Publication number: CN102338094A
Application number: CN201010237202XA
Authority: CN
Inventors: 韩兴亮
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2010-07-26
Filing date: 2010-07-26
Publication date: 2012-02-01

Abstract

The invention discloses a lower cover structure of a closed type compressor. The closed type compressor comprises a shell, wherein the shell comprises a cylinder body, an upper cover, a lower cover and the like; a motor and a compressor component are arranged in the shell; the motor comprises a stator, a rotor, a crank shaft and the like; the compressor component comprises a cylinder, an upper bearing, a lower bearing and the like; and an exhaust pipe is arranged on the upper cover. A plurality of continuous convex rings and concave rings are formed on the lower cover, and sound deadening cavities are formed between the convex rings and the concave rings. By the lower cover structure of the closed type compressor, the noise reflection area of the inner wall of the lower cover is effectively increased, the noise reflection path is prolonged, the noise scattering is increased, and the noise of the compressor is reduced by about 1 to 2 dB, so the environment is quieter and more comfortable, and simultaneously the rigidity and the strength of the lower cover are improved.

Description

The lower cover structure of hermetic type compressor

Technical field

The invention belongs to a kind of compressor, be specifically related to a kind of following covering and form a plurality of continuous bulge loops and scrobicular ring, form silencing cavity between bulge loop and the scrobicular ring, so that reduce the lower cover structure of the hermetic type compressor of compressor noise at hermetic type compressor.

Background technique

Shown in Fig. 1～3, the compressor of existing technology, the inner upper side that is included in housing 1 is equipped with electric machine assembly 20, at the downside of electric machine assembly 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, and lower cover 13 is installed on the base 14.Electric machine assembly 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 comprises cylinder 31, upper bearing 32, lower bearing 33 and baffler 34; At the inner eccentric part 23a that forms rotary crankshaft 23 of the compression volume C of cylinder 31; In the outside of eccentric part 23a, being provided with can rotation and the rolling piston 35 of revolution by eccentric part 23a; One side contacts with the excircle upper thread of rolling piston 35, and is the dividing plate structures such as (not shown) of suction area and compressing area with the compression volume C zoning that the outer peripheral surface of the inner peripheral surface of cylinder 31 and rolling piston 35 forms.The suction port (not shown) that also is communicated with the suction pipe in the suction area in the cylinder 31, and the exhaust port (not shown) that is used to discharge compressed media in the compressing area.

In addition, be provided with exhaust port (not shown) in the upper bearing 32, its upside binding is fixed with baffler 34, is used to reduce the noise that is produced by pressure difference from the compressed media gas of exhaust port discharge.Be provided with suction pipe 40 in the bottom of seal casinghousing 1, be discharged to seal casinghousing 1 outside, on loam cake 12, be provided with discharge tube 41 for making dielectric gas through baffler 34.

But in the hermetic type compressor of existing technology, the lower cover of compressor is level and smooth arc; To noise improvement that compressor produced to no effect; If the reduction noise can only increase the thickness of lower cover or cylinder, certainly will cause raw-material waste, product cost to improve.

Summary of the invention

The present invention proposes for the shortcoming that overcomes existing technology; Its objective is provides a kind of following covering at hermetic type compressor to form a plurality of continuous bulge loops and scrobicular ring; Form silencing cavity between bulge loop and the scrobicular ring, so that reduce the lower cover structure of the hermetic type compressor of noise.

Technological scheme of the present invention is: a kind of hermetic type compressor lower cover structure; Described hermetic type compressor comprises housing; Housing is made up of cylindrical shell, loam cake and lower cover etc., and motor and compressor assembly are installed in housing, and motor is made up of stator, rotor and bent axle etc.; Compressor assembly is made up of cylinder, upper bearing, lower bearing and baffler, and loam cake is provided with outlet pipe.

Covering a plurality of continuous bulge loops of formation and scrobicular ring down, form silencing cavity between bulge loop and the scrobicular ring.

The ratio apart from B2 between the external diameter B1 of lower cover and two bulge loops is 3: 4.

The overall height H 1 of lower cover is 1: 2 with the ratio of the height H 2 of bulge loop.

Described bulge loop, scrobicular ring and lower cover are integrally formed.

The present invention is owing to formed a plurality of continuous bulge loops and scrobicular ring covering down; Form silencing cavity between bulge loop and the scrobicular ring, effectively increased the reflective surface area of lower cover inwall noise, prolonged the reflection path of noise; Strengthened the scattering of noise; The noise of compressor has reduced and has been about 1～2dB (decibel), makes environment quiet more comfortable, has also improved the rigidity and the intensity of lower cover simultaneously.

Description of drawings

Fig. 1 is the longitudinal sectional drawing of the hermetic type compressor of existing technology;

Fig. 2 be existing technology the hermetic type compressor lower cover attach view;

Fig. 3 is along the sectional drawing of A-A line among Fig. 2;

Fig. 4 is the longitudinal sectional drawing that the hermetic type compressor of lower cover of the present invention is installed;

Fig. 5 is the view that attaches of hermetic type compressor lower cover of the present invention;

Fig. 6 is along the sectional drawing of C-C line among Fig. 5;

Fig. 7 is the antinoise schematic representation of the hermetic type compressor lower cover of existing technology;

Fig. 8 is the antinoise schematic representation of hermetic type compressor lower cover of the present invention.

Wherein:

1 housing, 11 cylindrical shells

12 loam cakes, 13 lower covers

14 bases, 15 lower covers

16 bulge loops, 17 scrobicular rings

18 silencing cavity, 20 electric machine assemblies

21 stators, 22 rotors

23 bent axles, 30 compressor assemblies

31 cylinders, 32 upper bearing (metal)s

33 lower bearings, 34 bafflers

35 pistons, 40 suction pipes

41 discharge tubes

Embodiment

Below, with reference to accompanying drawing and embodiment hermetic type compressor lower cover structure of the present invention is elaborated:

The label that the employing that Component of the present invention are identical with existing technology is identical.

Shown in Fig. 4～6, a kind of hermetic type compressor lower cover structure comprises housing 1, in the inner upper side of housing 1 electric machine assembly 20 is installed, at the downside of electric machine assembly 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 15 of hollow, and lower cover 15 is installed on the base 14.

On lower cover 15, form a plurality of continuous bulge loops 16 and scrobicular ring 17, the present invention is 2 bulge loops and a scrobicular ring, forms noise reduction cavity 18 between bulge loop 16 and the scrobicular ring 17.Wherein, the external diameter of lower cover 15 is B1, and the distance between two bulge loops 16 is B2, and the total height of lower cover 15 is H1, and the height of bulge loop 16 is H2.Wherein: B2: B1 is 3: 4; H2: H1 is 1: 2.

Bulge loop 16 is integrally formed with scrobicular ring 17 and lower cover 15.

Electric machine assembly 20 is pressed on the inner peripheral surface that is fixed on cylindrical shell 15, 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 comprises cylinder 31, upper bearing 32, lower bearing 33 and baffler 34; At the inner eccentric part 23a that forms rotary crankshaft 23 of the compression volume C of cylinder 31; In the outside of eccentric part 23a, being provided with can rotation and the rolling piston 35 of revolution by eccentric part 23a; One side contacts with the excircle upper thread of rolling piston 35, and is the impeller structures such as (not shown) of suction area and compressing area with the compression volume C zoning that the outer peripheral surface of the inner peripheral surface of cylinder 31 and rolling piston 35 forms.The suction port (not shown) that also is communicated with the suction pipe in the suction area in the cylinder 31, and the exhaust port (not shown) that is used to discharge compressed media in the compressing area.

Like Fig. 7, shown in 8; It is the comparison of loam cake and the loam cake different structure of the present invention of existing technology for the effect that reduces noise; Arrow is represented the path of propagation of noise among the figure; Can find out by the quantity of arrow among the figure, the annular silencing cavity in the loam cake of the present invention for the reflecting effect of noise than good many of the reflecting effect of the loam cake of existing technology.

This is that cold media air is compressed into high temperature and high pressure gas in cylinder because when compressor operating, and the HTHP cold media air flows in the cylindrical shell from cylinder through the gas discharge outlet of upper bearing (metal) and baffler.Because a plurality of continuous bulge loop and the scrobicular ring that cover in the present invention; Form silencing cavity between bulge loop and the scrobicular ring, effectively increased the reflective surface area of loam cake inwall, prolonged the reflection path of noise; Strengthened noise scattering, played the effect that reduces noise from structure.The noise that experiment shows compressor has reduced and has been about 1～2dB (decibel), makes environment quiet more comfortable, has also improved the rigidity and the intensity of lower cover simultaneously.

Claims

1. the lower cover structure of a hermetic type compressor; Described hermetic type compressor comprises housing (15); Housing (15) is made up of cylindrical shell (16), loam cake (12) and lower cover (13) etc., and electric machine assembly (20) and compressor assembly (30) are installed in housing (15), and motor (20) is made up of stator (21), rotor (22) and bent axle (23); Compressor assembly (30) is by cylinder (31), upper bearing (32), lower bearing (33) and form; Loam cake (12) is provided with outlet pipe (41), it is characterized in that: go up at lower cover (15) and form a plurality of continuous bulge loops (16) and scrobicular ring (17), form noise reduction cavity (18) between bulge loop (16) and the scrobicular ring (17).

2. the lower cover structure of hermetic type compressor according to claim 1, it is characterized in that: the ratio apart from B2 between the external diameter B1 of lower cover (15) and two bulge loops (16) is 3: 4.

3. the lower cover structure of hermetic type compressor according to claim 1 is characterized in that: the overall height H 1 of lower cover (15) is 1: 2 with the ratio of the height H 2 of bulge loop (16).

4. the lower cover structure of hermetic type compressor according to claim 1, it is characterized in that: described bulge loop (16), scrobicular ring (17) and lower cover (15) are integrally formed.