CN207349097U - noise reduction device, compressor and air conditioner - Google Patents

Abstract

The utility model provides a device of making an uproar, compressor and air conditioner fall. The noise reduction device is arranged at the air outlet of the compressor, and comprises: a main flow line; and the outlet end of the main pipeline is communicated with the outlet ends of the side branch pipelines along the flowing direction of the airflow, and a phase difference exists between the waveforms of the airflow flowing through the main pipeline and the airflow flowing through at least one side branch pipeline so as to attenuate the amplitude of the waveform of the merged airflow. The technical scheme of the utility model can initiatively attenuate the air current pulsation to reduce the noise.

Description

Denoising device, compressor and air conditioner

Technical field

Air-conditioning technical field is the utility model is related to, in particular to a kind of denoising device, compressor and air conditioner.

Background technology

Refrigeration unit vibrating noise problem is an important factor for influencing unit reliability and usage experience.It is main at present Vibration cause is divided into two parts：One side is that the mechanical oscillation of compressor body are delivered to unit.Since compressor moves in itself The dynamic balance of component is poor, and installation misaligns, basic engineering is improper etc., the vibration of unit is responsible for, so that being attached thereto Pipeline vibrate；On the other hand it is that compressor air-discharging forms gas in pipeline.If compressor is in exhaust process It is middle to produce pressure change or since intermittence when unit works, periodicity suction and discharge, these situations all evoke gas in pipe Pulse state is presented in body, causes the pressure of medium, speed, density etc. in pipe to make periodically to become not only with change in location, but also with the time Change, gas will be produced with this.The air-flow of pulsation runs into racing elbow, control valve along Pipeline transport will produce when element Raw exciting force, is acted on by this exciting force, and pipeline will produce certain mechanical oscillation response.In the prior art, shake for pipeline The dynamic vibration reducing measure used mainly includes setting damping, addition geometrical clamp, vibration partitions etc.；Commonly used for gas Decreasing measure mainly include set surge tank, set collector, adjustment air-column inherent frequency with avoid air column resonance, set arteries and veins It is dynamic attenuator, as follows using orifice plate eliminating gas flow pulsation etc., the wherein specific principle of gas decreasing measure：

Surge tank is set, and surge tank is mostly installed near the air inlet or exhaust outlet of compressor, its effect is so that arteries and veins Dynamic air-flow is cut down in pipe becomes slight；Secondly surge tank can change the air-column inherent frequency of pipe-line system so that cylinder Air-column inherent frequency value between surge tank is greatly improved avoids low order air column resonance with this.

Collector is set, when collector is mainly used in multiple compressors parallel running, multitube exhaust is integrated together, With the inhomogeneities of this centralized Control pulse pneumatic.

Air-column inherent frequency is adjusted to avoid resonant frequency；The general measure is mainly matched in the circuit design stage. First theoretical calculation goes out to design the air-column inherent frequency of pipeline, then by adjusting the length of pipeline, caliber, geometrical clamp position etc. Measure adjusts air-column inherent frequency, so that reaching makes it be avoided with pipeline resonant frequency.

Pulsation dampening is set, which mainly carries out air-flow decay from Principles of Acoustics, damping is carried inside its container Fuse, damping fuse are had obvious attenuation for the vibration wave of some frequency bands, the decay of gas are reached with this.

Orifice plate eliminating gas flow pulsation is set；The measure mainly can be the air-flow in pipeline by the orifice plate of appropriate size Traveling wave is changed into from standing wave, so as to reduce the inhomogeneities of stream pressure, to strengthen buffering effect, achievees the purpose that vibration damping.

Understand in summary, be that passive abatement flowed energy reaches damping effect or adjustment with this mostly in the prior art Related pipeline intrinsic frequency and air-column inherent frequency avoid resonance frequency area with this, are in the prior art from source without a kind of device The gas of upper active attenuation compressor, so as to reduce noise and vibration.

Utility model content

The main purpose of the utility model is that a kind of denoising device, compressor and air conditioner are provided, it is new using this practicality The denoising device of type can active attenuation gas, to reduce noise.

To achieve these goals, one side according to the present utility model, there is provided a kind of denoising device, denoising device The exhaust ports of compressor are arranged on, denoising device includes：Main flow line；One or more collateral branch's pipeline, along the stream of air-flow Dynamic direction, the port of export of the main flow line are connected with the port of export of collateral branch's pipeline, flow through the air-flow of the main flow line And flow through at least one collateral branch's pipeline air-flow waveform between there are phase difference, so as to decay converge after air-flow The amplitude of waveform.

Further, the length of at least one collateral branch's pipeline is different from the length of main flow line.

Further, there are length difference △ L, length difference △ L between the length of collateral branch's pipeline and the length of main flow line to expire It is enough lower relation：△ L=(2n-1) × △ T × C；Wherein, △ T flow through the time of main flow line for air-flow and air-flow flows through collateral branch Time difference between the time of pipeline, C are the spread speed of air-flow, and n is natural number.

Further, time difference △ T meet the following formula：Wherein, T is an air-flow cycle, and f is Air-flow fundamental frequency.

Further, denoising device further includes the pipeline section that converges for integrating air-flow, the port of export of main flow line and collateral branch The port of export of pipeline is connected with converging pipeline section.

Further, denoising device further includes the flow straightening grid for being arranged on and converging in pipeline section, and flow straightening grid is used for outflow The air-flow of main flow line and collateral branch's pipeline carries out rectification.

Further, flow straightening grid includes multiple spaced first gussets, the first gusset and the inner wall for converging pipeline section Face connects.

Further, flow straightening grid further includes multiple spaced second gussets, the second gusset and the first link of boards, And second there are angle between gusset and the first gusset.

Further, denoising device further includes entrance pipeline section, and the input end of main flow line and the input end of collateral branch's pipeline are equal Connected with entrance pipeline section.

Further, main flow line is straight tube, and collateral branch's pipeline is bellows or helix tube.

Other side according to the present utility model, there is provided a kind of compressor, including compressor block and and compressor The denoising device of body connection, denoising device is foregoing denoising device.

3rd aspect according to the present utility model, there is provided a kind of air conditioner, including shell and set pressure inside the shell Contracting machine, compressor are foregoing compressor.

Using the technical solution of the utility model, denoising device is arranged on to the exhaust ports of compressor, so flows through master The air-flow on flow tube road and flow through at least one collateral branch's pipeline air-flow waveform between there are phase difference, two strands of air-flows is mutually declined Subtract, so as to the amplitude of the waveform for the air-flow after converging of decaying, further, reduce the air-flow impact to pipeline in itself, from And reduce vibration and the noise of compressor.

Brief description of the drawings

The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality New schematic description and description is used to explain the utility model, does not form the improper restriction to the utility model. In the accompanying drawings：

Fig. 1 shows the structure diagram of the embodiment of denoising device according to the present utility model；

Fig. 2 shows the sectional view along A-A of Fig. 1；And

Fig. 3 shows the comparison diagram of the embodiment of Fig. 1 and the airflow waveform of the prior art.

Wherein, above-mentioned attached drawing is marked including the following drawings：

10th, main flow line；20th, collateral branch's pipeline；30th, pipeline section is converged；40th, entrance pipeline section；50th, flow straightening grid.

Embodiment

It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the application can phase Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

It is noted that described further below is all illustrative, it is intended to provides further instruction to the application.It is unless another Indicate, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below New and its application or any restrictions used.Based on the embodiment in the utility model, those of ordinary skill in the art are not having All other embodiments obtained under the premise of creative work are made, shall fall within the protection scope of the present invention.

In the utility model, compressor is the compressor being arranged in air conditioner casing, and compressor includes compressor block The denoising device being connected with compressor block；Air conditioner includes shell and sets compressor inside the shell.

As shown in Figure 1 to Figure 3, the utility model provides a kind of denoising device, and denoising device is arranged on the row of compressor At gas port, denoising device includes main flow line 10 and one or more collateral branch's pipeline 20.Along the flow direction of air-flow, mainstream The port of export of pipeline 10 is connected with the port of export of collateral branch pipeline 20, is flowed through the air-flow of main flow line 10 and is flowed through at least one collateral branch There are phase difference between the waveform of the air-flow of pipeline 20, so as to the amplitude of the waveform for the air-flow after converging of decaying.

By above-mentioned setting, denoising device is arranged on to the exhaust ports of compressor, so flows through the gas of main flow line 10 Flow and flow through at least one collateral branch's pipeline 20 air-flow waveform between there are phase difference, two strands of air-flows is mutually decayed so that The amplitude of the waveform for the air-flow that can decay after converging；Further, the air-flow impact to pipeline in itself is reduced, so as to reduce pressure The vibration of contracting machine and noise.In the embodiment of the utility model, main flow line 10 and collateral branch's pipeline 20 are pipeline section, the pipeline section Interior bone be used for allow air-flow by, it is simple in structure, easy to control.

Specifically, main flow line 10 has the first interior bone, and collateral branch's pipeline 20 has the second interior bone.Above-mentioned first The air-flow that interior bone and the second interior bone are used to allow compressor to discharge is by the way that above-mentioned setting structure is simple, easy to operation； And flow through the air-flow of the first interior bone of main flow line 10 and flow through the second interior bone of at least one collateral branch's pipeline 20 There are phase difference between the waveform of air-flow, two strands of air-flows are made mutually to decay, so as to the waveform for the air-flow after converging of decaying Amplitude.

As shown in Figure 1, in the embodiment of the utility model, length and the main flow line 10 of at least one collateral branch's pipeline 20 Length is different.

By above-mentioned setting, the gas flow discharged by exhaust outlet of compressor is divided into two parts, due to two parts air-flow point The collateral branch's pipeline 20 not flowed through is different with the length of main flow line 10, so foring the phase difference of exhaust airstream, utilizes phase Difference carries out self abatement of gas so that gas diminishes.

The utility model takes into full account the periodic characteristic of the air-flow of exhaust outlet of compressor discharge, has merged active noise reduction and has subtracted The mentality of designing shaken, with reference to the principle of sound wave interference, basic principle is described as follows：

The length of main flow line 10 is shorter, and air-flow flows through the port of export that main flow line 10 is first reached after main flow line 10；And The length of collateral branch's pipeline 20 is longer, when gas in the gas hysteresis main flow line 10 in collateral branch's pipeline 20 is certain After phase, which causes the gas of two-way to cancel each other because of opposite in phase, so as to reach active attenuation air-flow arteries and veins Dynamic purpose.

Preferably, present embodiment uses a main flow line 10 and collateral branch's pipeline 20, so can be to avoid excessive Shunting cause pipeline structure excessively complicated, shunting excessively also tubes rows atmosphere pressure losses can be caused to become larger, be unfavorable for air-flow and exist Flowing in long pipe road.Such denoising device, it is simple in structure, easy to control.

Further, within a complete cycle, flow through main flow line 10 and collateral branch's pipeline 20 air-flow waveform it Between the scope of phase difference be more than 90 ° and less than or equal to 270 °.

Preferably, it is 180 ° to flow through the phase difference between the waveform of the air-flow of main flow line 10 and collateral branch's pipeline 20.Pass through It is artificial two pipelines are set length it is different, exhaust airstream phase difference is formed as 180 ° using this, this two strands of air-flows in itself can be because of The presence of phase difference so that the gas of two pipelines is cancelled out each other because of opposite in phase, so that in convergence, wave crest and ripple Paddy is overlapping, energy of cancelling out each other, and has the function that gas itself is cut down.

Because sound wave transmission has periodically, the air-flow in the air-flow hysteresis main flow line 10 in collateral branch's pipeline 20 During 180 ° of odd-multiple phase, the gas of two-way can also be made to cancel out each other because of opposite in phase, actively declined so as to reach Subtract the purpose of gas (being in particular the waveforms amplitude of air-flow).

In the embodiment of the utility model, there are length difference between the length of collateral branch's pipeline 20 and the length of main flow line 10 △ L, length difference △ L meet following relation：

△ L=(2n-1) × △ T × C (1)

Wherein, △ T be air-flow flow through the time of main flow line 10 and air-flow flow through between the time of collateral branch's pipeline 20 when Between it is poor, C be air-flow spread speed, n is natural number.

By above-mentioned setting, length difference △ L ensure that air-flow flows through the time of main flow line 10 and air-flow flows through collateral branch's pipe Existence time is poor between the time on road 20, and this time difference causes exhaust airstream to flow through main flow line 10 and collateral branch's pipeline 20 Air-flow between existing phase difference, the gas of two-way is cancelled out each other because of opposite in phase.

Preferably, phase difference is 180 °, in this way, the peaks and troughs of two strands of air-flows overlaps, it is cancelled out each other and is decayed The effect of energy is optimal, so as to achieve the purpose that to carry out self abatement using phase official post gas.

In the embodiment of the utility model, time difference △, T met the following formula：

Wherein, T is a complete air-flow cycle, and f is air-flow fundamental frequency.

By above-mentioned setting, the air-flow for flowing through main flow line 10 and the air-flow time difference for flowing through collateral branch's pipeline 20 are 1/2 T, ensure that air-flow flows through the phase difference occurred after two pipelines and the gas of two-way can be made mutually to be supported because of opposite in phase Disappear, the wave crest and trough for making two bursts of gases overlap, and realize that self is cut down.

In the utility model, gas vibration is similar to sine wave, since sound wave transmission has periodically, only two strands Opposite in phase and the oscillogram mutually to decay can be just produced during the odd-multiple of 1/2 T of phase difference of air-flow, even-multiple can produce Life is overlapping, is unable to reach the effect of abatement.

Air-flow is caused to produce abatement, it is necessary to so that the time difference is equal to the half of phase difference, i.e.,：

Again because air-flow fundamental frequency can theory try to achieve, i.e.,：

It can be obtained according to above-mentioned calculation formula：

Because air-flow sound wave has continuous transitivity, therefore：

Above-mentioned formula (6) is two sections of pipeline lengths of pipeline difference and air-flow fundamental frequency and the relational expression of spread speed, by can in formula As long as knowing that n takes different numerical value, length of pipeline difference can meet to decay to the odd-multiple of air-flow fundamental frequency and multiple frequence.

Air-flow after the difference decay of air flow phase itself is similar to the curve of cyclical fluctuations d1 in Fig. 3, and amplitude parts can be than not There is the trend of a reduction before decay, solid line d1 represents the airflow fluctuation after decay, and it is bent that dotted line d2 represents the fluctuation before not decaying Line (curve of cyclical fluctuations for not using the air-flow of the denoising device of the present embodiment).

As shown in Figure 1, in the embodiment of the utility model, denoising device is further included converges pipeline section for integrate air-flow 30, the port of export of main flow line 10 and the port of export of collateral branch's pipeline 20 are connected with converging pipeline section 30.

By above-mentioned setting, set be used to integrating air-flow to converge pipeline section 30 in the end of denoising device so that there is phase The multiply air-flow of potential difference converge pipeline section 30 realize be sufficiently mixed, complete mutual energy attenuation and counteracting.

As shown in Fig. 2, in the embodiment of the utility model, denoising device further includes the rectification for being arranged on and converging in pipeline section 30 Grid 50, flow straightening grid 50 are used to carry out rectification to the air-flow of outflow main flow line 10 and collateral branch's pipeline 20.

By above-mentioned setting, the combined gas streams after fraction is pulsed are counteracted converging to converge in pipeline section 30, after afterflow It is dynamic to pass through flow straightening grid 50, a whole stock of rule is rectified into, realizes the secondary abatement of gas.In this way, compressor air-discharging Air-flow is after itself cuts down and is rectified 50 artificail commutation of grid, it is possible to reduce impact of the gas for pipeline, not Pulsation energy the reduction of certain amplitude is subjected to before decaying by other gas devices, so that high degree subtracts Impact of the gas for unit is lacked.

As shown in Fig. 2, in the embodiment of the utility model, flow straightening grid 50 includes multiple spaced first gussets, First gusset is connected with converging the internal face of pipeline section 30.

It by above-mentioned setting, ensure that all air-flows for flowing through flow straightening grid 50 can pass through the first gusset, reach pair Combined gas streams carry out the purpose of rectification.Specifically, the first gusset can be along shown in Fig. 2, extend in vertical direction, and Parallel interval is arranged in horizontal direction, after air-flow is flowed through flow straightening grid 50, the parallel air-flow of many stocks is rectified into, into one Step reduces the inhomogeneities of airflow fluctuation.

Certainly, in the alternate embodiment that the present embodiment does not provide, the first gusset can also be set to according to being actually needed Extend in the horizontal direction, and in the vertical direction is arranged at intervals.

In the embodiment of the utility model, flow straightening grid 50 further includes multiple spaced second gussets, the second gusset With the first link of boards, and there are angle between the second gusset and the first gusset.

By above-mentioned setting, flow straightening grid 50 is the net structure surrounded by the first gusset and the second gusset, in this way, converging Air-flow after converging in conjunction pipeline section 30 is rectified grid 50 and splits into multiply air-flow parallel to each other again, reduces airflow fluctuation Inhomogeneities；And the air-flow after decaying, after flow straightening grid 50, flowing is more steady, and energy is further decayed, so as to To reduce the subsequently impact to pipeline, the purpose for reducing noise is realized.

As shown in Figure 1, in the embodiment of the utility model, denoising device further includes entrance pipeline section 40, main flow line 10 The input end of input end and collateral branch's pipeline 20 is connected with entrance pipeline section 40.

By above-mentioned setting, entrance pipeline section 40 is by compressor exhaust pipe and the main flow line 10 and collateral branch's pipeline of denoising device 20 connect, and realize the air-flow of compressor discharge being introduced directly into denoising device progress noise reduction process, and connection mode is simple.

As shown in Figure 1, in the embodiment of the utility model, main flow line 10 is straight tube, and collateral branch's pipeline 20 is curved tube.

Curved tube includes the first pipeline section and the second pipeline section connected with the first pipeline section, the center line of the first pipeline section and the second pipeline section Center line between there is angle.In this way, for straight tube, above-mentioned setting can increase the length of collateral branch's pipeline 20.It is excellent Selection of land, in the present embodiment, including two the first pipeline sections and two the second pipeline sections, the inclined placement of monnolithic case of collateral branch's pipeline 20 " W " type.In this way, the length of main flow line 10 is different with the length of collateral branch pipeline 20, thus air-flow flow through different pipelines it The phase difference of exhaust airstream can be formed afterwards, self abatement of gas is carried out using phase difference so that gas diminishes.

Specifically, collateral branch's pipeline 20 is bellows.

Pass through above-mentioned setting so that be connected to entrance pipeline section 40 and converge the main flow line 10 and collateral branch's pipe between pipeline section 30 The length on road 20 is different, ensure that there are phase difference, realization between two strands of air-flows for flowing through main flow line 10 and collateral branch's pipeline 20 Air-flow converge after mutual decay.

Here bellows refers to that the internal face of collateral branch's pipeline 20 is equipped with multiple annular grooves, multiple annular groove edges The axially spaced-apart of collateral branch's pipeline 20 is set, and there is the center line towards collateral branch's pipeline 20 to prolong between adjacent two annular grooves The protrusion stretched.In this way, flowing time of the air-flow in collateral branch's pipeline 20 can be increased so that air-flow flow through main flow line 10 when Between it is different from flowing through the time of collateral branch's pipeline 20.

Preferably, main flow line 10 is identical with the caliber of collateral branch pipeline 20, can so ensure to enter 10 He of main flow line The throughput of collateral branch's pipeline 20 is essentially identical.

Certainly, in the alternate embodiment that the utility model does not provide, collateral branch's pipeline 20 can also be set to helix tube, only Be that by the mode different with the length of collateral branch pipeline 20 of main flow line 10 the scope of protection of the utility model it It is interior.

In the embodiment of the utility model, additionally provide a kind of compressor, compressor include compressor block and with compression The denoising device of machine body connection.

Specifically, the exhaust outlet of compressor is connected with the entrance pipeline section 40 of denoising device, and denoising device converges pipeline section 30 It is connected with the pipeline close to condenser end, converges in pipeline section 30 and be equipped with flow straightening grid 50.Exhaust outlet of compressor discharge air-flow by Entrance pipeline section 40 enters, and air-flow is divided into two parts and respectively enters main flow line 10 and collateral branch's pipeline 20 at this time；10 He of main flow line The caliber of collateral branch's pipeline 20 is identical, ensure that the throughput into main flow line 10 and collateral branch's pipeline 20 is essentially identical.Air-flow arteries and veins Dynamic vibration is similar to sine wave, since collateral branch's pipeline 20 is longer than the pipeline of main flow line 10, into the air-flow stream of collateral branch's pipeline 20 The time for going out pipeline is grown compared with main flow line 10, and there are phase for the phase that existing time difference △ T cause when this two strands of air-flows converge Difference, so that air-flow itself carries out part pulsation and offsets.

Counteract fraction pulsation after combined gas streams continue at this time flowing pass through flow straightening grid 50, become parallel one Whole stock, at this time gas carry out secondary abatement.Exhaust airstream after counteracting and abatement flows into condenser near-end pipeline again Deng position, exhaust airstream can be efficiently reduced to vibration and noise problem caused by line shock.

It can be seen from the above description that the above embodiments of the present invention achieve the following technical effects：Noise reduction Device includes main flow line, collateral branch's pipeline, converges pipeline section, entrance pipeline section and flow straightening grid, the gas discharged by compressor exhaust pipe Body enters denoising device by entrance pipeline section, and is divided into two strands and respectively enters main flow line and collateral branch's pipeline, due to main flow pipe Road is different with the length of collateral branch's pipeline, so by there are phase difference between main flow line and two strands of air-flows of collateral branch's pipeline outflow. By artificially setting main flow line and collateral branch's length of pipe poor, so as to ensure that the phase difference that exhaust airstream occurs disclosure satisfy that ripple Peak is overlapped with trough, and realization is cancelled out each other and damping capacity；Further, what denoising device end was set converges pipeline section, ensures Tool dephased two strands of air-flows are sufficiently mixed converging pipeline section and realize, and are continued flowing and passed through flow straightening grid, are rectified into A parallel whole stock, realizes the secondary abatement of gas.Exhaust airstream after counteracting and abatement is near in inflow condenser The positions such as end pipe road, can efficiently reduce exhaust airstream to vibration and noise problem caused by line shock.

Unless specifically stated otherwise, the component and positioned opposite, the digital table of step otherwise illustrated in these embodiments Up to the unlimited the scope of the utility model processed of formula and numerical value.At the same time, it should be appreciated that each shown in attached drawing for the ease of description The size of a part is not to be drawn according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant Art, method and apparatus may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as awarding Weigh part for specification.In shown here and discussion all examples, any occurrence should be construed as merely example Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：It is similar Label and letter similar terms is represented in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with It need not be further discussed in attached drawing afterwards.

In the description of the utility model, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " horizontal, Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or position relationship be normally based on orientation or position shown in the drawings Relation is put, description the utility model is for only for ease of and simplifies description, in the case where not making conversely explanation, these nouns of locality Do not indicate that and imply that the device of meaning or element there must be specific orientation or with specific azimuth configuration and operation, because This is it is not intended that limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component in itself Wide is inside and outside.

For the ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be appreciated that spatially relative term is intended to comprising the orientation except device described in figure Outside different azimuth in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and " in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " bag Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.

It should be noted that term " first " in the description and claims of this application and above-mentioned attached drawing, " Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use Data can exchange in the appropriate case, so that presently filed embodiment described herein can be with except illustrating herein Or the order beyond those of description is implemented.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the present invention, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.

Claims (12)

1. a kind of denoising device, it is characterised in that the denoising device is arranged on the exhaust ports of compressor, the denoising device Including：

Main flow line (10)；

One or more collateral branch's pipeline (20), along the flow direction of air-flow, the port of export of the main flow line (10) and described The port of export connection of collateral branch's pipeline (20), flows through the air-flow of the main flow line (10) and flows through at least one collateral branch's pipeline (20) there are phase difference between the waveform of air-flow, so as to the amplitude of the waveform for the air-flow after converging of decaying.

2. denoising device according to claim 1, it is characterised in that the length of at least one collateral branch's pipeline (20) with The length of the main flow line (10) is different.

3. denoising device according to claim 2, it is characterised in that the length of collateral branch's pipeline (20) and the mainstream There are length difference △ L, the length difference △ L between the length of pipeline (10) to meet following relation：

△ L=(2n-1) × △ T × C；

Wherein, △ T flow through the time of the main flow line (10) for air-flow and air-flow flows through the time of collateral branch's pipeline (20) Between time difference, C be air-flow spread speed, n is natural number.

4. denoising device according to claim 3, it is characterised in that the time difference △ T meet the following formula：

<mrow> <mi>&amp;Delta;</mi> <mi>T</mi> <mo>=</mo> <mfrac> <mn>1</mn> <mn>2</mn> </mfrac> <mi>T</mi> <mo>=</mo> <mfrac> <mn>1</mn> <mrow> <mn>2</mn> <mi>f</mi> </mrow> </mfrac> <mo>;</mo> </mrow>

Wherein, T is an air-flow cycle, and f is air-flow fundamental frequency.

5. denoising device according to any one of claim 1 to 4, it is characterised in that the denoising device further includes use Converge pipeline section (30) in integration air-flow, the port of export of the main flow line (10) and the port of export of collateral branch's pipeline (20) are equal Connected with the pipeline section (30) that converges.

6. denoising device according to claim 5, it is characterised in that the denoising device, which further includes, is arranged on described converge Flow straightening grid (50) in pipeline section (30), the flow straightening grid (50) are used for flowing out the main flow line (10) and the collateral branch The air-flow of pipeline (20) carries out rectification.

7. denoising device according to claim 6, it is characterised in that the flow straightening grid (50) includes multiple interval settings The first gusset, first gusset is connected with the internal face for converging pipeline section (30).

8. denoising device according to claim 7, it is characterised in that the flow straightening grid (50) further includes multiple intervals and sets The second gusset put, second gusset and first link of boards, and between second gusset and first gusset There are angle.

9. denoising device according to any one of claim 1 to 4, it is characterised in that the denoising device further include into Mouthful pipeline section (40), the input end of the main flow line (10) and the input end of collateral branch's pipeline (20) with the entrance pipeline section (40) connect.

10. denoising device according to any one of claim 1 to 4, it is characterised in that the main flow line (10) is straight Pipe, collateral branch's pipeline (20) is bellows or helix tube.

11. a kind of compressor, including compressor block and the denoising device that is connected with the compressor block, it is characterised in that Denoising device of the denoising device any one of claims 1 to 10.

12. a kind of air conditioner, including shell and the compressor that is located in the shell, it is characterised in that the compressor is power Profit requires the compressor described in 11.