CN1720395A

CN1720395A - Chamber for compressor and compressor using the same

Info

Publication number: CN1720395A
Application number: CNA028301501A
Authority: CN
Inventors: 河淙勋; 河三铁; 李沅学; 李尚旭
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2002-12-20
Filing date: 2002-12-20
Publication date: 2006-01-11
Also published as: US20060171829A1; AU2002359019A1; WO2004057189A1; BR0215992A

Abstract

A chamber (10) for a compressor is disclosed in which at least one portion has a multi-layer structure (11) and plates having the multi-layer structure are tightly attached to thereby reduce noise and vibration by virtue of mutual frictional force. Vibration energy is transformed to thermal energy according to friction and transmitted externally through the chamber (10) during the operation of the compressor. Thus, noise and vibration generated during the operation of the compressor can be considerably reduced.

Description

Be used for the cavity of compressor and use the compressor of this cavity

Technical field

The present invention relates to a kind of compressor, particularly relate to a kind of cavity body structure that is used for compressor, vibration that it produces in the time of can reducing compressor operation and noise.

Background technique

In general, compressor converts mechanical energy to the compression energy of compressed fluid.Particularly, the compressor that is used for refrigerator system roughly is divided into rotary compressor, reciprocal compressor, scroll compressor etc.

Fig. 1 illustrates the cavity that is used for rotary compressor in the conventional art.

As shown in Figure 1, in general rotary compressor, when the electric mechanism unit 2 in being installed in cavity 1 was worked, rotor 3 and running shaft 4 were rotated, and simultaneously, because compression mechanism unit 5 work, fluid is inhaled into cylinder 6, and is compressed therein and discharges.

In other words, because the rolling piston 7 at eccentric part 4a place that is installed in running shaft 4 is along the rotation of the inner circumferential surface of cylinder 6, the fluid that is inhaled into compression volume (V) through suction port 6a is compressed, and is discharged from through discharge route 6b, and this operation is carried out repeatedly.

The cavity 1 of tradition rotary compressor comprises that one is formed on the main body 1a in columnar structured and has the suction pipe 8 of suction fluid that is used to that is formed on the one side with permeating; One loam cake 1b is connected to main body 1a top and has the discharge tube 9 that is used to discharge fluid; With a lower cover 1c, connect the bottom of main body 1a and by the fixed space support.

Particularly, as shown in Figure 2, cavity 1 is configured to sealed structure, has electric mechanism unit 2 and compression mechanism unit 5, wherein main body 1a, loam cake 1b and lower cover 1c each all have single layer structure and interfix by welding.

But, comprising rotary compressor, the compressor of reciprocal compressor and scroll compressor etc. has following problem.

That is to say that when it was operated, the pressure pulsation sound of machine assembly and grating produced vibration and noise, its cavity 1 through compressor is transferred to the outside.This is the critical factor that increases air conditioner outdoor machine and refrigerator noise.

In reducing the achievement of noise that cavity by compressor is discharged to the outside, Japanese patent unexamined disclose JP04-019373 and has proposed structure between a kind of thin plate that resin layer is inserted two cavitys and stop outside such noise is discharged to.But such structure has difficulty on it is made, and this is because make the integral thickness of cavity increase because the thin plate of two cavitys is spaced from each other and insert additional structure between two plates, and the resin layer insertion process is carried out extraly.

In addition, the resin layer that inserts between cavity two plates is very expensive as sound absorptive material, and this just causes the increase of cavity manufacture cost.

Summary of the invention

Therefore, an object of the present invention is to provide a kind of cavity that is used for compressor, the vibration and the noise that are discharged to the outside that it produces in the time of can the multi-layer structure by utilizing cavity being reduced in compressor operation by the friction between the layer of cavity, and a kind of compressor that uses this cavity.

In order to realize these purposes, a kind of cavity that is used for compressor is provided, wherein at least one part has multi-layer structure, and the sheet in the multi-layer structure closely connects, thus since mutually frictional force reduce noise and the vibration that produces.

In order to realize these purposes, a kind of cavity that is used for compressor also is provided, comprising: a main body and an outer main body in one form cylindrical shape and closely connection each other, thereby reduce noise and the vibration that produces by inner phase mutual friction; One is connected to the loam cake on interior main body top; The lower cover of lower body part in being connected to one.

In order to realize these purposes, a kind of compressor also is provided, comprising: a cavity has the lower cover that loam cake and that a cylindrical-shaped main body, is connected to main body top is connected to lower body part; One electric mechanism unit is positioned at the inside of cavity and the power that rotates; With a compression mechanism unit, the rotatory force that is used to utilize the electric mechanism unit in the cavity to produce is compressed and exhaust fluid, wherein, main body and outer main body in the main body of cavity comprises, they closely connect noise and the vibration that reduces the generation in the cavity by the phase mutual friction.

In order to realize these purposes, a kind of compressor that is used for also is provided, comprising: a cavity, have a cylindrical-shaped main body, a loam cake and that is connected to main body top is connected to the lower cover of lower body part; One electric mechanism unit is positioned at the inside of cavity and the power that rotates; With a compression mechanism unit, the rotatory force that is used to utilize the electric mechanism unit in the cavity to produce is compressed and exhaust fluid, wherein, main body and outer main body in the main body of cavity comprises, their tight connections are reduced in noise and the vibration that produces in the cavity by their phase mutual friction, and interior main body is fixed to loam cake and lower cover by welding.

The cavity that is used for compressor according to the present invention has a close-connected multi-layer structure at least one part of cavity, thereby make that when compressor operating being sent to outside vibrational energy through cavity is converted into heat energy and is diffused into the outside, so noise and vibration are reduced widely.

By having the compressor according to cavity of the present invention, the noise that is diffused into the outside can be reduced to minimum, thereby reliability of products can be enhanced, and can create quieter and satisfied environment.

Description of drawings

Fig. 1 is the profile diagram that has according to the rotary compressor of the cavity of tratitional technology;

Fig. 2 is the schematic representation that the rotary compressor among Fig. 1 is shown;

Fig. 3 shows the schematic representation that has according to the compressor of the cavity of first embodiment of the invention;

Fig. 4 shows the sectional view according to the noise of cavity of the present invention and vibration reduction principle;

Fig. 5 A shows at the hysteresis curve (hysteresis loop) that has according to power in the double-deck cavity of different materials of the present invention and strain (force-strain);

Fig. 5 B shows the power in the cavity of being made by homogenous material and the hysteresis curve of strain;

Fig. 6 A and 6B show the sectional view of the modification of first embodiment of the invention;

Fig. 7 A and 7B are respectively at planimetric map and sectional view according to the main body in the double layer construction of first embodiment of the invention;

Fig. 8 A and 8B are respectively at planimetric map and sectional view according to the main body in the three-decker of the modification of first embodiment of the invention;

Fig. 9 A and 9B are respectively at planimetric map and sectional view according to the main body in the four-layer structure of the modification of first embodiment of the invention;

Figure 10 shows the sectional view that has according to the compressor of the cavity of second embodiment of the invention;

Figure 11 shows the sectional view that has according to the compressor of the cavity of third embodiment of the invention;

Figure 12 shows the sectional view that has according to the compressor of the cavity of fourth embodiment of the invention;

Figure 13 shows the sectional view that has according to the compressor of the cavity of fifth embodiment of the invention;

Figure 14 shows the sectional view that has according to the compressor of the cavity of sixth embodiment of the invention.

Embodiment

In the explanation of a preferred embodiment of the present invention, for simplicity, will the major component of cavity body structure be described.Aspect this, although set forth basic structure, it can be applied to all general rotary compressor, reciprocal compressor and scroll compressor.

Fig. 3 shows the schematic representation that has according to the compressor of the cavity of first embodiment of the invention.

The compressor that has according to the cavity of first embodiment of the invention comprises: a seal chamber 10; One electric mechanism unit 15 is positioned at the cavity 10 inner and power that rotate; And a compression mechanism unit 17, be used for the rotatory force compression and the exhaust fluid that produce by from cavity 10 electric mechanism unit 15.

Cavity comprises that lower cover 13, a support 18 and a vibration damper 19 that loam cake 12, that a cylindrical-shaped main body 11, is connected to main body 11 tops is connected to main body 11 bottoms are connected to main body 11 bottoms and support cavity 10.

Main body 11 has double layer construction, comprises a main body 11a and an outer main body 11b in one, thereby reduces noise and the vibration that produces when compressor is driven.

Interior main body 11a closely is connected each other with outer main body 11b, thereby when noise with vibration produces in compressor and when it spreads out of, because the difference of the distortion between main body 11a and the 11b, between the first and second

main body

11a and 11b, rub, be lowered to the noise and the vibration of external diffusion through main body 1 from cavity 11 by it.

The assembling of main body 11a and outer main body 11b in relating to, thus they can be pressed into to cooperate and are connected to each other as follows, have tight contact structures thereby promptly outer main body 11b is fixed on the outside of interior main body 11a.

The assembling of interior main body 11a and outer main body 11b is not limited to the method for press fit, and interior main body 11a can or utilize a connection piece to be connected by general contraction connecting means with outer main body 11b.Otherwise two

main body

11a and 11b can be connected their outer surface and internal surface, then in main body 11a inner diameter can the instrument of anchor clamps be extended by for example using.Like this, thus interior main body 11a closely is connected with outer main body 11b and is constituted complete chamber body 11.

In addition, interior main body 11a and outer main body 11b can be made from a variety of materials, for these two

main body

11a and 11b preferably have different thermal expansion coefficient each other to produce friction energy by mutual different distortion.

In this case, preferably, outer main body 11b makes by having than the high thermal expansion coefficient of interior main body 11a material or the material of strain modulus.This is that interior main body 11a is difficult to distortion because because the little radius of curvature of interior main body 11a and stress are focused on interior main body 11a, compare with outer main body 11b.

Contact surface between interior main body 11a and the outer main body 11b preferably is formed rough surface, thereby can between two

main body

11a and 11b, form enough frictional force, and be transformed into heat energy when noise and vibrational energy this frictional force when the inside of cavity 11 spreads out of.

For cavity of the present invention, main body 11a in loam cake 12 and lower cover 13 are fixed on by weld seam W1 and W2 respectively, and support 18 is fixed on outer main body 11b by weld seam W3.At this moment, it is shorter than interior main body 11a that outer main body 11b is formed, thereby when interior main body 11a, loam cake 12 and lower cover 13 were soldered, outer main body 11b can be not soldered.

To the noise of reduction multilayer cavity and the principle of vibration be described by Fig. 4,5A and 5B below.

Fig. 4 shows the sectional view of the finite element of double-deck cavity.

Hysteresis curve with reference to figure 5A, lower plate 111b and upper plate 111a with strong contact force by interconnective state under and under the supposition sheet 111b be fixed, when as shown in Figure 4 power (Fg) was applied to last slice 111a, it was plastic deformation then that last slice 111a stands resiliently deformable.After this, if will be applied to last slice 111a than the stronger power of power between last slice 111a and the following sheet 111b, dry friction (coulomb friction) takes place between last 111a and following sheet 111b.Then, thus last slice 111a produces sliding movement on sheet 111b down produce hot J.

At this moment, by being created in the friction energy between last slice 111a and the following sheet 111b, promptly heat energy carries out the operation of sound and shock absorption, may be discharged to the outer shock energy of cavity thereby absorb.

Fig. 5 B has illustrated the hysteresis curve that changes when load when plain carbon steel applies tensile pressures has been shown.

The various embodiments that have the cavity body structure of above-mentioned noise and vibration reduction principle according to the present invention will be described now.

Fig. 6 A is the modification of first embodiment of the invention, wherein main body 11 ' interior main body 11a ' have identical length with outer main body 11b '.

In addition, interior main body 11a ' has different thickness (t1 and t2) with outer main body 11b '.Aspect this, preferably, the thickness t 2 of outer main body 11b ' is thinner than the thickness t 1 of interior main body 11a ', thereby the distortion of main body 11a ' is big in the deformation ratio of outer main body 11b '.

Fig. 6 B has illustrated another modification of first embodiment, and wherein interior main body 11a ' and outer main body 11b ' form has equal length, and the bottom of interior main body 11a ' and outer main body 11b ' is fixed together at lower cover 13 places by weld seam W2 '.

At this moment, the top of interior main body 11a ' and outer main body 11b ' can be fixed by weld seam, but considers the distortion of interior main body 11a ' and outer main body 11b ', and they are preferably not soldered.

Therefore, main body 11 ' the upper end portion, interior main body 11a ' is welded to loam cake 12 by weld seam W1, main body 11 ' the underpart, outer main body 11b ' is welded to lower cover 13 by weld seam W2.Nature, support 19 is fixed on the outer main body 11b ' by weld seam W3.

Fig. 7 A and 7B are respectively planimetric map and the sectional views that the double layer construction main body is shown, wherein, main body 11a and outer main body 11b in main body 11 comprises, they closely connect each other.

Fig. 8 A and 8B show the different modification of first embodiment of the invention, illustrate main body 21 comprise in main body 22, outer main body 23 and be inserted in intermediate host 24 between main body 22 and the outer main body 23.

Intermediate host 24 closely is connected on the surface of interior main body 22 and outer main body 23 simultaneously.

Interior main body 22, intermediate host 24 and outer main body 23 can be made by different materials, thereby each thermal expansion coefficient differs from one another.In this case, preferably, the big I of thermal expansion coefficient increases successively according to the order of interior main body 22, intermediate host 24 and outer main body 23.

Fig. 9 A and 9B show the modification of first embodiment of the invention, and quadruple-layer structure body 31 is shown, in wherein two

intermediate hosts

34 and 35 are inserted between main body 32 and the outer main body 33.

With above-mentioned first embodiment in like manner, these

main bodys

32,33,34 closely are connected each other with 35.

Figure 10 shows the sectional view that has according to the compressor of the cavity of second embodiment of the invention.

First embodiment's cavity shows the multi-layer structure main body, and the cavity of second embodiment of the invention shows the structure of the cavity that all forms multi-layer structure.

That is to say, second embodiment's cavity 40 comprises

inner chamber body

41a, 42a and 43a and

outer chamber

41b, 42b and 43b, thus be created in the noises that produce in the cavity 40 and vibrate can by

inner chamber body

41a, 42a and 43a and

outer chamber

41b, 42b and 43b mutually mutual friction reduce.

Therefore, the main body 41 of cavity 40, loam cake 42 and lower cover 43 all have double layer construction.

In the assembling of

inner chamber body

41a, 42a and 43a and

outer chamber

41b, 42b and 43b, main body 41, loam cake 42 and lower cover 43 are manufactured into double layer construction and combination mutually.

Have double-deck cavity 40 although Figure 10 has set forth, cavity can be formed three-decker or the four-layer structure that has shown in Fig. 8 A and 9A.

Figure 11 has only set forth that the loam cake 52 of cavity 50 is formed double layer construction, and Figure 12 has only set forth that the lower cover 63 of cavity 60 is formed double layer construction, is formed double layer construction and Figure 13 has set forth the loam cake 72 and the lower cover 73 of cavity 70.

Shown in Figure 11-13, have under the double-deck situation at loam cake or lower cover, they can closely connect by for example methods such as cooperation, contraction, inner diameter increase that are pressed in first embodiment.If desired, can form three-decker or four-layer structure at loam cake or lower cover.

Preferably, traditional heat radiation structure is fixed in the outside of loam cake and lower cover, thereby the heat energy that the friction that produces when making compressor operation causes is by outwards heat release reposefully.

Although not shown in figures, the main body of cavity and loam cake or main body and lower cover can have multi-layer structure.

For the heat energy of the cavity between main body 81a in outwards discharging is created in and the outer main body 81b, the heat release unit is installed in the outside of outer main body 81b.

As the heat release unit, a plurality of fins 84 are formed from outer main body 81b and dispel the heat to outer lug.Otherwise can serve as reasons and have the tinsel (not shown) that high conductivity material is made in the heat release unit, and it closely is connected to outer main body 81b and outwards conducts heat.

As mentioned above, be used for having following advantage according to the cavity of compressor of the present invention.

That is to say, form multi-layer structure by at least one part, when compressor operation, because friction, shock energy is transformed into heat energy, and is diffused into the outside by cavity.Therefore, noise that produces during compressor operation and vibration can be reduced widely.

In addition, when having compressor according to cavity of the present invention when being suitable for being used for the refrigerator of the refrigeration cycle that forms by compressor, condenser, expansion valve and vaporizer or air-conditioning, the noise that compressor produces, the main noise source during refrigerator or air-conditioning operation just is reduced to minimum.Therefore, reliability of products can be enhanced, and can create a satisfied environment.

Should be understood that those skilled in the art without departing from the spirit and scope of the present invention, can make various modification and variation the cavity that compressor of the present invention is used.Therefore protection scope of the present invention should limit all modification of the present invention and variations with appending claims and its equivalent.

Claims

1, a kind of compressor comprises:

One cavity, the lower cover that the loam cake and that is connected to main body top by a cylindrical-shaped main body, is connected to lower body part constitutes;

One electric mechanism unit is positioned at the inside of cavity and the power that rotates; With

One compression mechanism unit is used for the rotatory force that the electric mechanism unit by cavity produces and compresses and exhaust fluid,

Wherein, the main body of cavity comprises a main body and an outer main body in one, and their tight connections are reduced in noise and the vibration that produces in the cavity by the phase mutual friction between interior main body and the outer main body.

2, compressor as claimed in claim 1, wherein an intermediate host is inserted between interior main body and the outer main body.

3, compressor as claimed in claim 2, wherein main body is assembled in the mode that a main body is press-fit into another main body.

4, compressor as claimed in claim 1, wherein in main body and outer main body fitted into luggage and join by being pressed into mutually.

5, compressor as claimed in claim 1, wherein interior main body and outer main body are assembled by shrinking each other.

6, compressor as claimed in claim 1, wherein interior main body and outer main body are welded to each other on their at least one part.

7, a kind of compressor comprises:

One compression mechanism unit, the rotatory force that is used to utilize the electric mechanism unit in the cavity to produce is compressed and exhaust fluid,

Wherein, main body and outer main body in the main body of cavity comprises, their closely connect and are reduced in noise and the vibration that produces in the cavity by their phase mutual friction, and interior main body by welding be fixed to loam cake with under cover.

8, compressor as claimed in claim 7, wherein interior main body and outer main body are by being connected on the part that is welded on them.

9, compressor as claimed in claim 7, wherein in main body and outer main body fit into luggage and join by being pressed into.

10, compressor as claimed in claim 7, wherein interior main body and outer main body are assembled by shrinking each other.

11, a kind of cavity that is used for compressor is included in the multi-layer structure on its at least one part, and wherein in order to reduce noise and the vibration that produces by the phase mutual friction, each sheet in this multi-layer structure is closely connected each other.

12, cavity as claimed in claim 11 comprises a cylindrical-shaped main body, and a loam cake and that is connected to main body top is connected to the lower cover of lower body part, and wherein main body has multi-layer structure.

13, cavity as claimed in claim 12, wherein main body has double layer construction.

14, cavity as claimed in claim 11 comprises a cylindrical-shaped main body, and a loam cake and that is connected to main body top is connected to the lower cover of lower body part, and wherein in loam cake and the lower cover has multi-layer structure.

15, cavity as claimed in claim 11 has double layer construction or three-decker in its at least one part.

16, cavity as claimed in claim 11, wherein the part in multi-layer structure fits into luggage and joins by being pressed into.

17, cavity as claimed in claim 11, wherein the part in multi-layer structure is assembled by shrinking each other.

18, cavity as claimed in claim 11, wherein the part in multi-layer structure is assembled by being connected mutually.

19, cavity as claimed in claim 11, one of them layer is made from a variety of materials with its adjacent bed.

20, cavity as claimed in claim 19, wherein, a layer and its adjacent bed are made by the material with different heat expansion coefficient.

21, cavity as claimed in claim 20, the layer that wherein is positioned at the compressor outside is made by the high material of material coefficient of thermal expansion coefficient that has than the layer that is positioned at the compressor inboard.

22, cavity as claimed in claim 11, one of them layer has different strain modulus with another layer that is connected with it.

23, cavity as claimed in claim 22, the layer that wherein is positioned at the compressor outside is made by the high material of material strain modulus that has than the layer that is positioned at the compressor inboard.

24, cavity as claimed in claim 11, each layer that wherein constitutes multi-layer structure has different thickness.

25, cavity as claimed in claim 24, the layer that wherein is positioned at the cavity inboard is than the bed thickness that is positioned at the cavity outside.

26, cavity as claimed in claim 11, wherein the surface that is in contact with one another of the part in multi-layer structure is formed coarse.

27, cavity as claimed in claim 11, wherein the heat release unit is set at the skin in the multi-layer structure of cavity.

28, cavity as claimed in claim 27, wherein the heat release unit comprises a plurality of fins.

29, cavity as claimed in claim 27, wherein the heat release unit be one with the outer contacted tinsel that constitutes cavity.

30, a kind of cavity that is used for compressor comprises:

The outer main body of a main body and a cylindrical shape in one cylindrical shape, their phase mutual friction that tightly was connected each other reduce its inner noise and vibration that produces;

One is connected to the loam cake on interior main body top; With

One is connected to the lower cover of interior lower body part.

31, cavity as claimed in claim 30 comprises that also one is connected on the outer main body and supports the support of cavity.

32, cavity as claimed in claim 31, its medium-height trestle is fixed on the outer main body by welding.

33, cavity as claimed in claim 30, wherein loam cake and lower cover are fixed on the interior main body by welding.

34, cavity as claimed in claim 30, the whole length than interior main body that its China and foreign countries' main body forms is short.