CN217462558U - Noise reduction partition plate and compressor - Google Patents

Abstract

The utility model discloses a noise reduction clapboard and a compressor, wherein the noise reduction clapboard comprises a clapboard main body and a cantilever section, and the outline of the clapboard main body is circular; the cantilever section is provided with a plurality of, and set up respectively in the week side of baffle main part, the part or whole thickness of cantilever section are less than the thickness of baffle main part. The utility model discloses the median septum main part sets up between last cylinder and lower cylinder, through setting up the cantilever section, and the part or the whole thickness of cantilever section are less than the thickness of baffle main part for gather the wave of broadband in the region of structure thickness attenuation on certain space yardstick, play the effect that suppresses sound radiation in the structure, can show the vibrational response who reduces pump body subassembly, obtain good noise reduction effect.

Description

Noise reduction partition plate and compressor

Technical Field

The utility model relates to a frequency conversion compressor technical field especially relates to a baffle and compressor of making an uproar fall.

Background

Along with the improvement of the requirement of people on the noise of the air conditioner and the reduction of the cost of each part of the air conditioning system, the noise problem of the compressor is more obvious, the judgment of a client on the comfort level of the air conditioner is directly influenced by the vibration noise of the compressor, so that the noise of the compressor is necessary to be further reduced, and the satisfaction degree of the client is improved.

When the compressor works, the pump body assembly vibrates, and the vibration of the pump body assembly is an important reason for causing the compressor to generate noise through sound source positioning discovery, so that how to reduce the vibration of the pump body assembly is the technical problem to be solved at present.

Patent document CN216199007U provides a sound absorption structure, a compressor and a refrigeration device thereof, wherein the sound absorption structure includes: the main part has been seted up the passageway and has been closed a plurality of helmholtz resonant cavities, and the passageway link up the main part, and a plurality of helmholtz resonant cavities set up around the passageway, and mutually independent, and helmholtz resonant cavity's opening and passageway intercommunication. When the sound wave in the compressor passed through the passageway, the sound wave was spread into in the helmholtz resonant cavity, and the sound wave constantly is consumed in the helmholtz resonant cavity, weakens the sound wave, makes the noise reduce, and simultaneously through setting up a plurality of helmholtz resonant cavities, the absorption scope of sound absorption structure's sound wave frequency channel improves the sound absorption effect. However, the problem of reducing the vibration response of the pump body assembly is still not solved, and the large-range groove opening is troublesome in processing and high in cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a baffle and compressor of making an uproar fall aims at solving prior art, the great problem of pump body subassembly vibration response.

In a first aspect, an embodiment of the present invention provides a noise reduction partition board, including:

the outer contour of the partition plate main body is circular;

the cantilever section is provided with a plurality of and sets up respectively in the week side of baffle main part.

Furthermore, the cantilever section extends outwards from the side wall of the partition board main body, and the thickness of the cantilever section gradually decreases outwards from the side wall of the partition board main body.

Furthermore, the thickness of the cantilever section is gradually decreased from the lateral wall of the clapboard main body to the outside in a power exponent manner.

Furthermore, the thickness of one end of the cantilever section, which is away from the partition plate main body, is zero.

Further, the extension path of the cantilever section is a straight line.

Further, the extending path of the cantilever section is an arc line.

Furthermore, the cantilever sections are provided with a plurality of cantilever sections which are uniformly distributed on the periphery of the clapboard main body.

Further, the length of the cantilever section is L2, and the width of the cantilever section is L3;

wherein the length and the width of the cantilever section meet the conditions that L2/L3 is more than or equal to 0.6 and less than or equal to 1.8.

Further, the power index curve h is A x m;

wherein x is the distance between any point on the cantilever section and one end of the cantilever section departing from the clapboard main body, h is the thickness of the cantilever section at the corresponding position, A is a constant and A is more than 0, m is a power exponent and m is more than or equal to 2.

In a second aspect, an embodiment of the present invention provides a compressor, including the noise reduction baffle, the noise reduction baffle is used for forming a face seal with the cylinder end face to form a suction exhaust cavity.

The utility model discloses the median septum main part sets up between last cylinder and lower cylinder, through setting up the cantilever section, and the part or the whole thickness of cantilever section are less than the thickness of baffle main part for gather the wave of broadband in the region of structure thickness attenuation on certain space yardstick, play the effect that suppresses sound radiation in the structure, can show the vibrational response who reduces pump body subassembly, obtain good noise reduction effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic view of a compressor;

FIG. 2 is a schematic structural view of a pump body assembly;

FIG. 3 is a schematic view of a prior art separator plate;

fig. 4 is a schematic structural diagram of a partition board provided in an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view taken along line A-A of FIG. 4;

fig. 6 is another schematic structural diagram of a partition board according to an embodiment of the present invention;

fig. 7 and fig. 4 are schematic structural views of the partition board with the same viewing angle.

Reference numerals:

100. a pump body assembly; 110. a partition plate; 111. a separator body; 112. a cantilever section; 120. a lower cylinder; 130. an upper cylinder; 140. an upper roller; 150. an upper flange; 160. a crankshaft;

200. a motor assembly;

300. a housing.

It will be understood that the compressor structure and pump body assembly shown in fig. 1 and 2 are for the convenience of understanding, some parts of which are not shown and corresponding hatching is not indicated, and these will not affect the understanding of the technical solution of the present invention by those skilled in the art.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1-3, it should be noted that the partition plate 110 of the present invention is disposed in the pump body assembly 100 of the compressor, and can effectively suppress noise generated by vibration of the pump body assembly 100 (the conventional partition plate has no cantilever section, and therefore has no shock absorption function).

Generally, the compressor includes a pump body assembly 100 and a motor assembly 200, and the pump body assembly 100 and the motor assembly 200 are installed in an inner cavity of a housing 300.

Specifically, the pump body assembly 100 is located at a lower end in the inner cavity, and the motor assembly 200 is located at an upper end in the inner cavity.

The motor assembly 200 includes a rotor and a stator, the stator is fixed on the inner wall of the housing 300, the rotor can rotate relative to the stator, the rotor is connected to the crankshaft 160 of the pump body assembly 100, and the rotor can drive the crankshaft 160 to rotate.

The pump body assembly 100 includes an upper cylinder 130, a lower cylinder 120, an upper flange 150, a lower flange, a muffler and a crankshaft 160, the upper flange 150 is mounted on the upper end surface of the upper cylinder 130 in a matching manner, and the lower flange is mounted on the lower end surface of the lower cylinder 120 in a matching manner, so that compression chambers are formed inside the upper cylinder 130 and the lower cylinder 120;

the silencer is arranged at the upper end of the upper flange 150 and is used for reducing the airflow noise generated when the compression cavity exhausts;

one end of the crankshaft 160 is connected with the rotor, the other end is sleeved with a roller, the roller is positioned in the compression cavity, and the roller is driven by the crankshaft 160 to do eccentric rotation motion in the compression cavity, so that the working volume of the compression cavity generates periodic change;

the roller and the matched slide sheet divide the compression cavity into a low-pressure cavity and a high-pressure cavity;

the compressor is generally further provided with a liquid distributor, the liquid distributor is connected to the pump body assembly 100 to provide refrigerant for the pump body assembly 100, the crankshaft 160 of the pump body assembly 100 is driven by the rotor of the motor assembly 200 to rotate, so that the pump body assembly 100 can complete the processes of air suction, compression and exhaust, and the refrigerant is compressed by the pump body assembly 100, discharged through the exhaust pipe of the housing 300, and then enters the cycle of the refrigeration device. When the compressor works, the pump assembly 100 generates vibration, and the vibration of the pump assembly 100 is an important cause for generating noise of the compressor.

The partition 110 is disposed between the upper cylinder 130 and the lower cylinder 120, and forms a surface seal with the upper cylinder 130 and the lower cylinder end face of the lower cylinder, thereby forming a suction and discharge chamber (compression chamber).

The utility model provides a thickness, width, length are respectively along D direction, C direction, B direction in the attached drawing.

Referring to fig. 4, a noise reduction spacer 110 includes:

the outer contour of the separator body 111 is circular;

the cantilever sections 112 are disposed on the periphery of the partition body 111, and the thickness of part or all of the cantilever sections 112 is smaller than that of the partition body 111.

In this embodiment, the diaphragm main body 111 is disposed between the upper cylinder 130 and the lower cylinder 120, and by disposing the cantilever section 112, and by setting part or all of the thickness of the cantilever section 112 to be smaller than the thickness of the diaphragm main body 111, a broadband wave is focused in a region with a thinned structure thickness on a certain spatial scale, so as to play a role of suppressing sound radiation in the structure, thereby significantly reducing the vibration response of the pump body assembly 100, and obtaining a good noise reduction effect.

The thicknesses of the cantilever segments 112 may be smaller than the thickness of the partition body 111, or the thickness of a part of the cantilever segments 112 may be smaller than the thickness of the partition body 111.

Referring to fig. 5, in an embodiment, the cantilever segment 112 extends outward from the sidewall of the partition body 111, and the thickness of the cantilever segment 112 decreases gradually outward from an end close to the sidewall of the partition body 111.

In the embodiment, the thickness of the cantilever segment 112 connected to one end of the partition body 111 is equal to the thickness of the partition body 111, and the thickness of the extending portion gradually decreases as the cantilever segment 112 extends outward.

The thickness of the cantilever section 112 is gradually decreased from one end of the side wall close to the main partition 111 to the outside, so that the effect of suppressing sound radiation in the structure is more obvious, and the vibration response of the body assembly can be more obviously reduced.

Referring to fig. 5, in an embodiment, the thickness of the cantilever segment 112 gradually decreases from one end of the sidewall of the partition body 111 to the outside in a power exponent manner.

Specifically, the acoustic black hole effect is that the propagation speed of a wave in an acoustic black hole region is gradually reduced by using the power exponent change of the geometric parameter or the material characteristic parameter of a thin-wall structure, and the wave speed can be reduced to zero under an ideal condition, so that the phenomenon of reflection is avoided. The acoustic black hole can be used for gathering the wave energy transmitted in the structure at a specific position, so that vibration and noise reduction of the thin-wall structure is realized.

In this embodiment, the thickness of the cantilever section 112 gradually decreases from the sidewall of the main partition 111 to the outside in a power exponent manner, so that the cantilever section 112 forms the acoustic black hole region, which can reduce the propagation speed of the wave in the structure, convert the supersonic wave into the subsonic wave, make the effect of suppressing the acoustic radiation in the structure more obvious, and can more obviously reduce the vibration response of the body assembly.

Specifically, when the pump body assembly 100 vibrates, the vibration is transmitted to the partition plate 110, the partition plate main body 111 transmits the vibration to the cantilever section 112, and the tail section of the cantilever section 112 can vibrate to consume the energy of the vibration of the pump body assembly 100, so that the vibration response of the pump body assembly 100 is suppressed, the noise generated by the vibration of the pump body assembly 100 is reduced, and the purpose of reducing vibration and noise of the compressor is achieved.

Specifically, the thickness of the cantilever section 112 is a power exponent and gradually decreases, and when the thickness of the cantilever section 112 gradually decreases to 0, the wave velocity of the vibration decreases, so that the collection of the waves is realized, and meanwhile, according to the energy conservation theorem, the amplitude value of the vibration increases, so that the energy of the vibration can be quickly consumed, the effect of broadband vibration reduction can be realized, the attenuation of the medium-high frequency vibration is facilitated, and the medium-high frequency noise generated by the pump body assembly 100 due to the vibration is reduced.

In one embodiment, the thickness of the end of the cantilever segment 112 facing away from the main diaphragm body 111 is zero.

In this embodiment, the thickness of the end of the cantilever segment 112 away from the main partition wall 111 is zero, which means that the thickness of the cantilever segment 112 gradually decreases from the end close to the side wall of the main partition wall 111 to zero, so that the effect of suppressing the sound radiation in the structure is more obvious, and the vibration response of the body assembly can be more obviously reduced.

Referring to fig. 4-7, in an embodiment, the extension path of the cantilever segment 112 is a straight line.

In this embodiment, the cantilever segment 112 may extend radially outward from the sidewall of the partition body 111, or may extend obliquely.

In the preferred embodiment, the cantilevered segments 112 extend radially outward from the sidewall of the diaphragm body 111.

In an embodiment, the cantilever segment 112 may be separately manufactured from the diaphragm body 111 and then spliced, or may be integrally formed with the diaphragm body 111.

In one embodiment, the extension path of the cantilever segment 112 is an arc.

In the embodiment, the cantilever segment 112 is formed by extending an arc-shaped track on the sidewall of the partition body 111 away from the partition body 111 gradually, so that the length of the cantilever segment 112 is longer and the damping effect is better under the condition of the installation shell 300 with the same size.

In an embodiment, the extension path of the cantilever segment 112 may also be an arbitrary curve.

In the embodiment, the cantilever segment 112 is formed by extending the sidewall of the partition body 111 along a curved track, and under the condition of the installation shell 300 with the same size, the length of the cantilever segment 112 can be longer, and the damping effect is better.

Referring to fig. 5, in an embodiment, the cantilever segments 112 are disposed in a plurality and uniformly distributed around the main partition board 111.

In the present embodiment, the cantilever segments 112 can be uniformly distributed on the peripheral side of the main partition board 111, regardless of the straight extension, the curved extension or the arc extension.

In one embodiment, the length of the cantilever segment 112 is L2, and the width of the cantilever segment 112 is L3;

wherein, the length and the width of the cantilever section 112 satisfy L2/L3 of 0.6-1.8.

In this embodiment, when the length and the width of the cantilever segment 112 are in this relationship, the damping effect is better.

Specifically, when the cantilever segment 112 is a curve or an arc, the length thereof is the length of the curve segment or the arc end.

Referring to fig. 5, in one embodiment, the power exponent curve h is a x;

wherein x is the distance between any point on the cantilever segment 112 and the end of the cantilever segment departing from the main partition 111, h is the thickness of the cantilever segment 112 at the corresponding position, A is a constant and A is greater than 0, m is a power exponent and m is greater than or equal to 2.

In this embodiment, after the length of the cantilever section 112 is determined by the above embodiments, the thickness of the cantilever section 112 is set in this relationship, and a better damping effect can be obtained.

Specifically, the relation formula in this embodiment is applicable to straight line extension, curve extension and arc line extension, and it can be understood that, when straight line extension is performed, x is a distance between any point on the cantilever section 112 and a straight line segment at one end of the partition plate main body 111 away from the point, when curve extension is performed, x is a distance between the cantilever section 112 and a curve segment at one end of the partition plate main body 111 away from the point, and when arc line extension is performed, x is a distance between the cantilever section 112 and an arc line segment at one end of the partition plate main body 111 away from the point.

Specifically, when the cantilever segments 112 are simultaneously linearly extended and/or curvilinearly extended and/or combined, it can be understood that x is a distance from a linear and/or curved segment and/or curved end of the cantilever segment 112 away from the end of the diaphragm body 111.

For example, when extending straight, the power exponent curve is h 2 x ² The distance from the tail end of the cantilever segment 112 (the end of the cantilever segment 112 departing from the main partition 111) is 2mm, and the corresponding thickness is 8 mm.

It can be seen that the thickness of the cantilever segment 112 is smaller and varies in a decreasing power exponent manner as the distance from the tail end of the cantilever segment 112 is closer.

It can be understood that the smaller the thickness of the tail end of the cantilever segment 112, the better the acoustic black hole effect of the cantilever segment 112 can be achieved. However, considering the process and processing limitations, the thickness of the tail portion of the cantilever segment 112 may be set to a size equal to or slightly larger than 0.1mm in practical manufacturing.

For example, the thickness of the tail end of the cantilever segment 112 is set to 0.1mm, which can be achieved by using the existing process, and meanwhile, the cantilever segment 112 can achieve a better vibration damping effect.

The embodiment of the utility model provides a still provide a compressor, include the baffle 110 of making an uproar, it is used for forming the face with the cylinder end face and seals to make an uproar baffle 110 of making an uproar to form the exhaust chamber of breathing in.

Specifically, the cantilever section 112 is installed at a position avoiding the suction port of the pump block assembly 100, and the overall length L1 of the partition 110 is smaller than the inner diameter of the casing 300.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A noise reducing baffle, comprising:

the outer contour of the separator main body is circular;

the cantilever section is provided with a plurality of and sets up respectively in the week side of baffle main part, the partial or whole thickness of cantilever section is less than the thickness of baffle main part.

2. A noise reducing baffle according to claim 1, wherein:

the cantilever section extends outwards from the side wall of the clapboard main body, and the thickness of the cantilever section gradually decreases outwards from one end close to the side wall of the clapboard main body.

3. A noise reducing baffle according to claim 2, wherein:

the thickness of the cantilever section gradually decreases in a power exponent manner from one end, close to the side wall of the partition plate main body, to the outer side.

4. A noise reducing baffle according to claim 3, wherein:

the thickness of one end of the cantilever section, which is far away from the clapboard main body, is zero.

5. A noise reducing baffle according to claim 1, wherein:

the extension path of the cantilever section is a straight line.

6. A noise reducing baffle according to claim 1, wherein:

the extension path of the cantilever section is an arc line.

7. A noise reducing baffle according to claim 1, wherein:

the cantilever section is provided with a plurality of, and evenly distributed in baffle main part week side.

8. A noise reducing baffle according to claim 5 or 6, wherein:

the length of the cantilever section is L2, and the width of the cantilever section is L3;

wherein the length and the width of the cantilever section meet the conditions that L2/L3 is more than or equal to 0.6 and less than or equal to 1.8.

9. A noise reducing baffle according to claim 8, wherein:

the power index curve h is A x m;

wherein x is the distance between any point on the cantilever section and one end of the cantilever section departing from the clapboard main body, h is the thickness of the cantilever section at the corresponding position, A is a constant and A is more than 0, m is a power exponent and m is more than or equal to 2.

10. A compressor comprising a noise reducing partition as claimed in any one of claims 1 to 9, said noise reducing partition being adapted to form a face seal with a cylinder end face to form a suction discharge chamber.

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