CN112780864A

CN112780864A - Vibration reduction bent pipe, compressor and air conditioning system

Info

Publication number: CN112780864A
Application number: CN201911082909.5A
Authority: CN
Inventors: 黄波; 赵凤荣
Original assignee: Shanghai Highly Electrical Appliances Co Ltd
Current assignee: Shanghai Highly Electrical Appliances Co Ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2021-05-11

Abstract

The application provides a damping return bend, compressor and air conditioning system. The vibration reduction bent pipe is used for communicating the liquid storage device and the compressor. The damping elbow includes: the elbow comprises an elbow body and a damping layer arranged on the periphery and/or the inner wall of the elbow body, wherein the damping layer is attached to the periphery and/or the inner wall of the elbow body and is made of damping alloy materials. Through the damping layer on the periphery and/or the inner wall of elbow body, like this the air current passes through elbow body, the damping layer can absorb partial energy to reach the effect of damping and making an uproar. And the damping layer is made of damping alloy materials, and the damping alloy materials can convert most of vibration energy into heat energy to be dissipated, so that the effects of vibration reduction and noise reduction can be further achieved.

Description

Vibration reduction bent pipe, compressor and air conditioning system

Technical Field

The application relates to the technical field of compressors, in particular to a vibration reduction bent pipe, a compressor and an air conditioning system.

Background

The air conditioner is used as a daily household appliance, and provides much convenience for the life of a user. At the same time, however, the air conditioner may generate more or less noise during operation. Wherein the main cause of noise is related to the construction and operation of the refrigeration system of the air conditioner.

The refrigerating system of the air conditioner mainly comprises a compressor, a condenser, a throttling device, an evaporator and the like which are connected with a refrigerating pipeline. During refrigeration, high-temperature and high-pressure gaseous refrigerant compressed by the compressor is discharged from an exhaust port of the compressor, flows through the condenser, is condensed into liquid refrigerant in the condenser, is subjected to pressure reduction and temperature reduction through the throttling device, reaches the evaporator, absorbs heat in the evaporator and evaporates into gas, and the generated low-temperature gaseous refrigerant converges to a gas return port of the compressor, enters the compressor through the gas return port of the compressor, is compressed in the compressor and enters the next cycle.

Along with the development of scientific technology and the improvement of national living standard, the requirement of people on living environment comfort is gradually improved, the requirement on low-noise and high-comfort air conditioners is higher and higher, and the requirement on the noise of air compressors is stricter and stricter.

In the existing rotor type compressor structure, the vibration reduction elbow pipe for connecting the liquid storage device and the compressor body can generate large vibration and noise due to the influence of suction airflow pulsation. The noise transmitted from the air conditioner is low-frequency noise generally, and is difficult to eliminate in a form of silencing cotton and the like, so that the noise elimination is very critical for the air conditioner system.

Disclosure of Invention

An object of this application provides a damping return bend, compressor and air conditioning system to the realization is to the return bend damping between compressor body and the reservoir and is fallen the purpose of making an uproar.

The application provides a damping return bend, the damping return bend is used for intercommunication reservoir and compressor body, includes: the elbow comprises an elbow body and a damping layer arranged on the periphery and/or the inner wall of the elbow body, wherein the damping layer is attached to the periphery and/or the inner wall of the elbow body and is made of damping alloy materials.

Optionally, in the vibration damping elbow, the damping alloy material is one of a complex phase type, a twin crystal type and a dislocation type damping alloy material.

Optionally, in the vibration damping elbow, when the damping layer is disposed on the outer periphery of the elbow body, the damping layer is a damping shell, the damping shell is divided into a first shell and a second shell along the axial direction of the damping shell, and both the first shell and the second shell are attached to the outer periphery of the elbow body, wherein the curvature of the first shell and the curvature of the second shell are not greater than the curvature of the elbow body.

Optionally, the shock absorbing elbow further includes a clamp that clamps the first housing and the second housing on the outer periphery of the elbow body.

Optionally, in the vibration damping elbow, the clamp is made of a damping alloy material.

Optionally, in the damping return bend, first shell both sides with second shell both sides all are equipped with the flange along the axial, be equipped with the through-hole on the flange, adopt the bolt to pass through the through-hole will first shell with the second shell chucking is in the periphery of return bend body.

Optionally, in the vibration damping elbow, the thickness of the damping layer is greater than or equal to 0.5 mm.

Optionally, in the vibration damping elbow, the damping layer is disposed on the inner wall of the elbow body, and the damping layer is provided with at least one damping hole.

In another aspect, the present application provides a compressor comprising a compressor body, a reservoir and the above-described vibration reduction elbow communicating the reservoir with the compressor body.

In still another aspect, the present application further provides an air conditioning system including the compressor described above.

Compare in prior art, the damping return bend that this application provided, through damping layer on the periphery of return bend body and/or the inner wall, the air current passes through like this return bend body, partial energy can be absorbed to the damping layer to reach the effect of making an uproar falls in the damping. And the damping layer is made of damping alloy materials, and the damping alloy materials can convert most of vibration energy into heat energy to be dissipated, so that the effects of vibration reduction and noise reduction can be further achieved.

Drawings

Fig. 1 is a structural view of a compressor provided in an embodiment of the present application;

FIG. 2 is a block diagram of a shock tube elbow provided in an embodiment of the present application;

FIG. 3 is a schematic view of a damping housing provided in an embodiment of the present application;

FIG. 4 is a schematic view of another shock tube according to an embodiment of the present application;

FIG. 5 is a schematic view of another damping housing provided in embodiments of the present application.

Wherein the reference numerals of figures 1-5 are as follows:

10-a compressor body; 20-a reservoir; 30-damping bent pipe; 31-an elbow body; 32-a damping layer; 320-a damping housing; 321-a first housing; 322-a second housing; 33-a band 33; 34-a flange; 341-through hole.

Detailed Description

To further clarify the objects, advantages and features of the present application, a shock tube, a compressor and an air conditioning system according to an embodiment of the present application will be described in detail with reference to fig. 1 to 5. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present application.

Fig. 1 is a structural view of a compressor according to an embodiment of the present application, fig. 2 is a structural view of a vibration damping elbow according to an embodiment of the present application, and fig. 3 is a schematic view of a damping housing according to an embodiment of the present application.

Referring to fig. 1-3, the present embodiment provides a damper elbow 30, the damper elbow 30 being used to communicate the accumulator 20 and the compressor body 10. The damper bend 30 includes: an elbow body 31 and a damping layer 32 disposed on an outer periphery and/or an inner wall of the elbow body 31, the damping layer 32 being attached to the outer periphery and/or the inner wall of the elbow body 31. That is, the damping layer 32 may be disposed on the outer periphery of the elbow body 31, so that the intake air flowing through the elbow body 31 vibrates the elbow body 31, and the damping layer 32 may absorb part of the energy to achieve the effects of reducing vibration and noise. Or, the damping layer 32 may be disposed on the inner wall of the elbow body 31, so that the damping layer 32 can absorb part of the energy in advance before the air flow flowing into the elbow body 31 impacts the inner wall of the sound-absorbing cavity, thereby achieving the effect of reducing vibration and noise, and preventing the air flow from directly impacting the inner wall of the elbow body 31, thereby improving the strength of the elbow body 31. Or, the damping layer 32 is simultaneously disposed on the outer periphery and the inner wall of the elbow body 31, so that the damping and noise reduction effects are better. It can be understood that the damping layer 32 is made of a damping alloy material, and since the damping alloy material has a good effect of suppressing resonance, the damping layer 32 is disposed on the outer periphery and/or the inner wall of the elbow body 31, and can absorb part of energy, so that the vibration damping elbow 30 can achieve a good vibration damping and noise reduction effect.

The damping alloy material is one of a complex phase type, a twin crystal type and a dislocation type damping alloy material, and the damping layer 32 made of the complex phase type, the twin crystal type or the dislocation type damping alloy material can achieve the purposes of vibration reduction and noise reduction.

The damping mechanism of the complex phase type damping alloy material is as follows: under the action of periodic stress, the phase with higher strength in some multiphase damping alloy materials can generate elastic deformation, and the softer phase generates plastic deformation, so that the energy of time-consuming vibration in the generation process can be dissipated, and the noise can be reduced. The multiphase damping alloy material comprises a cast iron system and a Zn-Al system, and the cast iron system and the Zn-Al system are mainly characterized by low cost, easy processing and capability of being used in an as-cast state.

The damping mechanism of the damping alloy material with the twin crystal form is as follows: under the action of periodic stress, the coherent twin crystal interface related to the thermal elastic martensite band carries out rearrangement movement, generates inelastic strain to relax the stress, dissipates the external vibration energy, and forms damping attenuation on the vibration, thereby reducing the noise. The damping alloy material with the twin crystal form comprises a Mn-Cu system, a Ti-Ni system, a Fe-Mn system and a Cu-Al system, and is mainly characterized by excellent damping performance and shape memory performance.

The damping mechanism of the dislocation type damping alloy material is as follows: under the action of periodic stress, dislocations in some alloys can be separated from point defects (impurity atoms or vacancies) pinned along the line and move, additional dislocation strain can be generated in the elastic strain range in the process, so that internal loss is generated to dissipate external vibration energy, and dislocation type damping alloy materials are mainly Mg and Mg alloys and are mainly characterized by small specific gravity, good corrosion resistance and high damping performance.

The inventors have found that the damping layer 32 is preferably made of a Mn — Cu-based twin crystal type damping alloy material or a Mg and Mg alloy type dislocation type damping alloy material. First, when the compressor is operated, the gas passing through the vibration reduction bent pipe 30 is a low-temperature gas cooled by the condenser, and the damping characteristics of the Mn — Cu-based twin crystal type damping alloy material or the Mg and Mg alloy type damping alloy material are excellent in low-temperature and normal-temperature states. Secondly, when the compressor works, the vibration reduction bent pipe 30 connected with the liquid storage device 20 and the compressor body 10 can generate large vibration and generate noise due to the influence of suction airflow pulsation, a damping layer 32 made of Mn-Cu series twin crystal type damping alloy materials or dislocation type damping alloy materials of Mg and Mg alloy systems is arranged on the vibration reduction bent pipe 30, the vibration reduction bent pipe has high vibration reduction and noise reduction effects and also has the capability and strength of resisting impact fatigue, the damping layer 32 made of Mg and Mg alloy system damping alloy materials is light in specific gravity, the vibration of the bent pipe body 31 is reduced while the weight borne by the bent pipe body 31 is not increased too much, and therefore the strength of the bent pipe body 32 is improved. It should be noted that, in the case of not considering the cost and the strength, the larger the value of the specific damping value of the damping alloy material in the present application is, the better the vibration and noise reduction effect is.

Wherein, damping layer 32 can be installed for the structure on the periphery and/or the inner wall of elbow body 31, also can be for setting up the SMD layer of one deck damping on the periphery of elbow body 31 and/or the inner wall, promptly, can be the periphery of elbow body 31 sets up SMD layer of damping or mounting structure spare, perhaps, is set up the SMD layer of one deck damping or mounting structure spare on the periphery inner wall of elbow body 31, perhaps, is all set up SMD layer of damping or mounting structure spare on the periphery of elbow body 31 and the inner wall when all setting up damping layer 32 on the periphery of elbow body 31 and the inner wall, can be set up SMD layer of damping or mounting structure spare on the periphery of elbow body 31 and the inner wall simultaneously, also can be wherein set up the SMD layer of damping on the one side.

Preferably, when the damping layer 32 is disposed on the inner wall of the elbow body 31, the damping layer 32 is provided with a damping hole (not shown). Specifically, the damping layer 32 is randomly provided with a plurality of fine damping holes, which may be uniformly arranged at a certain interval or randomly and irregularly arranged. When sound waves with certain frequency pass through the damping holes, noise with the same frequency as that of the vibration damping bent pipe 30 is absorbed and attenuated in each damping hole, and the damping holes can further improve the vibration damping and noise reduction effects.

Referring to fig. 2-3 in particular, when the damping layer 32 is disposed on the outer periphery of the elbow body 31, the damping layer may be made as a damping shell 320, the damping shell 320 is divided into two parts along the axial direction, namely a first shell 321 and a second shell 322, and both the first shell 321 and the second shell 322 are attached to the outer periphery of the elbow body 31, wherein the curvature of the first shell 321 and the second shell 322 is not greater than the curvature of the elbow body 31, so as to ensure that the first shell 321 and the second shell 322 can be attached to the outer periphery of the elbow body 31, and thus, a gap may not be formed between the outer periphery of the elbow body 31 and the damping shell 320, and the vibration and noise reduction effect of the damping shell 320 may not be affected.

With continued reference to FIG. 2, in one embodiment, the shock absorbing elbow 30 further includes a clamp 33, where the clamp 33 clamps the first and

second shells

321, 322 to the outer periphery of the elbow body 31 in order to ensure that the first and

second shells

321, 322 are tightly fit to the outer periphery of the elbow body 31, which may prevent vibration and noise from being accentuated in the elbow body 31 when the damping shell 320 is not securely attached to the elbow body 31. The clamp 33 is made of a damping alloy material, so that vibration generated on the elbow pipe body 31 when the compressor works can be further dissipated, vibration and noise transmitted to the liquid storage device 20 when the compressor works are further weakened, and vibration reduction and noise reduction effects are achieved.

FIG. 4 is a schematic view of yet another shock tube elbow provided by an embodiment of the present application, and FIG. 5 is a schematic view of yet another damping housing provided by an embodiment of the present application.

Referring to fig. 4 to 5, the flanges 34 may be axially disposed on both sides of the first shell 321 and both sides of the second shell 322, the flanges 34 are disposed with through holes 341, and the first shell 321 and the second shell 322 are tightly fastened to the outer circumference of the elbow body 31 through the through holes 341 by bolts, so as to prevent the vibration and noise of the elbow body 31 from being increased when the damping shell 320 is not firmly connected to the elbow body 31. Preferably, the flanges 34 on both sides of the first housing 321 are integrally formed with the first housing 321, and the flanges 34 on both sides of the second housing 322 are integrally formed with the second housing 322, so that no connecting structure is required between the flanges 34 on both sides of the first housing 321 and the first housing 321, and between the flanges 34 on both sides of the second housing 322 and the second housing 322, and unnecessary vibration and noise can be reduced. Further, the bolts may also be made of damping alloy material, so as to further dissipate the vibration of the elbow body 31 generated by the compressor during operation.

It should be noted that the above-described two ways of connecting the damper housing 320 to the outer periphery of the elbow body 31 are not intended to limit the ways of connecting the damper housing 320 to the outer periphery of the elbow body 31, i.e., the ways of connecting the damper housing 320 to the outer periphery of the elbow body 31 are not limited to the two ways, and the damper housing 320 may be welded to the outer periphery of the elbow body 31 or bonded to the outer periphery of the elbow body 31 with a strong adhesive, so long as the damper housing 320 can be firmly and tightly bonded to the outer periphery of the elbow body 31, and the purpose of the present application can be achieved.

It should be appreciated that the damping layer 32 may completely cover the outer periphery and/or inner wall of the elbow body 31 or may only cover a partial area of the outer periphery and/or inner wall of the elbow body 31. For example, the damping layer 32 may include a plurality of strip-shaped structures that are spaced apart around the outer periphery and/or inner wall of the elbow body 31, with each strip-shaped structure extending along the length of the elbow body 31. For another example, the damping layer 32 may include a plurality of annular structures that are spaced apart from each other on the outer periphery and/or inner wall of the elbow body 31.

Preferably, the thickness of the damping layer 32 is greater than or equal to 0.5mm, and in the specific implementation process, the thickness of the damping layer 32 is greater than or equal to 0.5mm, so that the thickness of the damping layer 32 is not limited by the processing technology, and the purpose of vibration and noise reduction can be achieved.

Referring to fig. 1, in another aspect, the present application provides a compressor including a compressor body 10, an accumulator 20, and a damper elbow 30 as described above. The damping elbow 30 is used for communicating the liquid storage 10 with the compressor body 20. Of course, the compressor also includes components familiar to those skilled in the art, such as a motor, etc., which will not be described in detail herein.

In still another aspect, the present application further provides an air conditioning system including the compressor described above. Further, the air conditioning system may also include a condenser, a throttle device, an evaporator, and the like, as is well known to those skilled in the art. During refrigeration, high-temperature and high-pressure gaseous refrigerant compressed by the compressor is discharged from an exhaust port of the compressor to flow through the condenser, and is condensed into liquid refrigerant in the condenser, then the liquid refrigerant is reduced in pressure and cooled by the throttling device, the low-temperature liquid refrigerant reaches the evaporator, the refrigerant absorbs heat in the evaporator and is evaporated into gas, the generated low-temperature gaseous refrigerant converges to a return air port of the compressor, enters the compressor through the return air port of the compressor, is compressed in the compressor, and enters the next cycle.

The above description is only for the purpose of describing the preferred embodiments of the present application, and is not intended to limit the scope of the present application, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims

1. A damping elbow for communicating a reservoir and a compressor body, comprising: the elbow comprises an elbow body and a damping layer arranged on the periphery and/or the inner wall of the elbow body, wherein the damping layer is attached to the periphery and/or the inner wall of the elbow body and is made of damping alloy materials.

2. The shock absorbing elbow according to claim 1, wherein the damping alloy material is one of a complex phase type, twin crystal type and dislocation type damping alloy material.

3. The shock absorbing elbow according to claim 1 or 2, wherein the damping layer is disposed at an outer periphery of the elbow body, the damping layer being a damping shell divided axially into a first shell and a second shell, the first shell and the second shell each conforming to the outer periphery of the elbow body, wherein a curvature of the first shell and the second shell is not greater than a curvature of the elbow body.

4. The shock absorbing elbow according to claim 3, wherein the first shell and the second shell are provided with flanges on both sides thereof in the axial direction, the flanges being provided with through holes, the first shell and the second shell being fastened to the outer periphery of the elbow body by bolts passing through the through holes.

5. The shock absorbing elbow according to claim 3, further comprising a clamp that clamps the first and second shells against an outer circumference of the elbow body.

6. The shock absorbing elbow according to claim 5, wherein the clip is formed from a damping alloy material.

7. The shock absorbing elbow according to claim 1 or 2, wherein the damping layer has a thickness of 0.5mm or more.

8. The shock absorbing elbow according to claim 1 or 2, wherein the damping layer is disposed on an inner wall of the elbow body, the damping layer having at least one damping hole disposed therein.

9. A compressor comprising a compressor body, an accumulator and a damper elbow as claimed in any one of claims 1 to 8 communicating the accumulator with the compressor body.

10. An air conditioning system, characterized in that it comprises a compressor according to claim 9.