CN118224069A - Muffler and compressor compartment assembly and refrigeration equipment - Google Patents

Abstract

The invention relates to the technical field of noise elimination, and provides a noise elimination piece, a compressor bin assembly and refrigeration equipment, wherein the noise elimination piece comprises a body and at least one noise elimination part, the noise elimination part is connected to the body, and at least one side of the noise elimination part is provided with a ventilation opening; the silencer comprises a shell and a baffle plate positioned in the shell, wherein the shell is internally provided with a first opening and a second opening which are separated by the baffle plate, the first opening is positioned on one side of the baffle plate and is communicated with the first cavity, the second opening is positioned on the other side of the baffle plate and is communicated with the second cavity, one of the first opening and the second opening is positioned on the air inlet side of the ventilation opening, and the other of the first opening and the second opening is positioned on the air outlet side of the ventilation opening. In the ventilation process, wind passes the vent, utilizes the portion of making an uproar to fall to the noise that wind flow produced, can form the sound wave that the phase place is opposite in first cavity and the second cavity, can realize the mutual offset of sound wave through first cavity and second cavity, realizes amortization and falls the noise, has taken into account ventilation and noise reduction function.

Description

Muffler and compressor compartment assembly and refrigeration equipment

Technical Field

The invention relates to the technical field of noise elimination, in particular to a noise elimination piece, a compressor bin assembly and refrigeration equipment.

Background

Noise is visible everywhere in life, and the noise can seriously interfere with normal life of people and influence physical and mental health of people. Noise is easily transmitted in a ventilation environment, and adverse effects are caused to people and surrounding environments.

In the related art, a compressor of a refrigeration apparatus is placed in a compressor compartment, which has dual requirements of ventilation and noise reduction. In order to meet the heat dissipation requirement of the compressor, the compressor bin needs to be provided with a ventilation grille so as to facilitate heat dissipation. In order to reduce noise of the refrigeration equipment, noise reduction treatment is required for the compressor compartment. But noise can be transmitted out through the ventilation grille, so that the noise reduction effect of the compressor is reduced, and the noise reduction treatment is adversely affected.

Therefore, there is an urgent need for a solution that can combine ventilation and noise reduction requirements.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the silencing piece which has a simple structure and meets the requirements of noise reduction and ventilation.

The invention also provides a compressor bin assembly.

The invention also provides refrigeration equipment.

According to an embodiment of the first aspect of the present invention, a muffler includes:

A body;

at least one silencing part connected to the body, and at least one side of the silencing part is provided with a vent;

The silencer comprises a shell and a baffle plate positioned in the shell, wherein a first cavity and a second cavity are separated in the shell through the baffle plate, a first opening and a second opening are formed in the shell, the first opening is positioned on one side of the baffle plate and is communicated with the first cavity, the second opening is positioned on the other side of the baffle plate and is communicated with the second cavity, one of the first opening and the second opening is positioned on the air inlet side of the ventilation opening, and the other opening is positioned on the air outlet side of the ventilation opening.

According to the silencing piece, the silencing part comprises the body and the silencing part, the vent is formed in at least one side of the silencing part, the silencing part comprises the shell and the partition plate, the first cavity and the second cavity are separated in the shell through the partition plate, the first opening communicated with the first cavity and the second opening communicated with the second cavity are formed in the shell, when wind flows through the vent, sound waves enter the silencing piece, sound waves with opposite phases can be formed in the first cavity and the second cavity, and the sound waves with opposite phases can be counteracted to a certain extent, so that silencing and noise reduction are achieved.

According to one embodiment of the invention, the two sides of the partition board form an asymmetric structure. The asymmetric structure can enable sound waves of the noise elimination frequency band to be counteracted in the first cavity and the second cavity in an opposite phase.

According to one embodiment of the invention, at least one of the volumes of the first and second cavities, the shapes of the first and second cavities, the first and second distances of the first and second openings to the partition, the shapes of the first and second openings, the lengths of the first and second openings, and the depths of the first and second openings is different.

According to one embodiment of the invention, the distance from the first opening to the partition is a first distance, the first distance being the maximum distance from the first cavity to the partition; and/or, the distance from the second opening to the partition plate is a second distance, and the second distance is the maximum distance from the second cavity to the partition plate.

According to an embodiment of the invention, the second distance is larger than the first distance, and the first opening and the second opening are arranged along a ventilation direction of the ventilation opening.

According to one embodiment of the invention, the longitudinal cross-sectional area of the first cavity is constant or gradually increases in the direction from the first opening to the partition; and/or, along the direction from the second opening to the partition board, the longitudinal section area of the second cavity is unchanged or gradually increased.

According to one embodiment of the invention, the cross-sectional shape of the first cavity and the second cavity is at least one of rectangular, triangular, semicircular and semi-elliptical.

According to one embodiment of the present invention, a plurality of the muffler parts are provided, the vent is provided between the muffler part and the body, and the vent is provided between adjacent muffler parts. A plurality of ventilation openings are arranged, and the ventilation effect is ensured while noise is reduced.

According to an embodiment of the present invention, a plurality of the muffler parts arranged in parallel and identical are connected to the body, or a plurality of the muffler parts arranged in parallel and different in structure are connected to the body.

According to one embodiment of the invention, the muffler further comprises a plate body, the plate body is provided with a first mounting opening, the body is connected to the plate body, and the muffler part is located in the first mounting opening.

According to one embodiment of the invention, the plate body is provided with a plurality of second mounting openings, at least one of the second mounting openings is covered with an elastic membrane, and the elastic membrane is connected with a mass block. The elastic membrane and the mass block form a local resonance type acoustic metamaterial, when sound waves are radiated into the second mounting port, the mass block can generate resonance, and meanwhile, vibration energy can be transmitted to the elastic membrane to attenuate and absorb the energy, so that the sound absorption, noise reduction and noise reduction effects are improved.

According to a second aspect of the present invention, a compressor compartment assembly includes a shell body and a muffler as described in any of the above, the shell body being provided with a third mounting port, the shell body and the muffler constructing a compressor compartment.

The compressor bin assembly provided by the embodiment of the invention comprises the silencing piece provided by the embodiment, and can meet the dual requirements of ventilation and noise reduction.

According to one embodiment of the invention, the first opening is directed towards the inside of the compressor compartment and the second opening is directed towards the outside of the compressor compartment; the shell body is provided with a plurality of third installing openings, the compressor bin is ventilated through the ventilation opening, at least one third installing opening and the corresponding silencing piece construct an air inlet, and at least one third installing opening and the corresponding silencing piece construct an air outlet.

The refrigeration appliance according to an embodiment of the third aspect of the present invention, including the compressor compartment assembly of any of the embodiments described above, is capable of meeting the dual requirements of ventilation and noise reduction while reducing weight and cost.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a prior art ventilation grille;

FIG. 2 is a transverse cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the internal structure of a compressor cartridge of the prior art;

FIG. 4 is a schematic view of a muffler structure according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a muffler provided in accordance with a first embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a muffler provided in a second embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of a muffler section provided by a third embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of a muffler section provided by a fourth embodiment of the present invention;

FIG. 9 is a schematic view of a muffler structure according to another embodiment of the present invention;

FIG. 10 is a schematic perspective view of a right side view of a compressor cartridge assembly according to an embodiment of the present invention;

FIG. 11 is a schematic perspective view of a rear side view of a compressor cartridge assembly according to an embodiment of the present invention;

FIG. 12 is a schematic view of the internal structure of a compressor cartridge assembly provided by an embodiment of the present invention;

FIG. 13 is a schematic cross-sectional view of a compressor cartridge assembly provided in accordance with an embodiment of the present invention;

FIG. 14 is an enlarged partial view of portion A of FIG. 13;

fig. 15 is a partial enlarged view of a portion B in fig. 13.

Reference numerals:

1. A related art ventilation grill; 2. a grid bar; 3. a compressor bin; 4. a back plate; 5. a compressor; 6. a fan; 7. a heat exchanger;

100. A sound damping member; 110. a body; 120. an acoustic cancellation unit; 121. a housing; 122. a partition plate; 123. a first cavity; 124. a second cavity; 125. a first opening; 126. a second opening; 127. an air outlet side; 128. an air inlet side; 130. a vent; 140. a plate body; 150. a second mounting port; 160. an elastic film; 170. a mass block;

200. a housing body; 210. a compressor; 220. a fan; 230. a heat exchanger.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a plurality of groups" is two or more.

In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.

In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

In the related art, referring to fig. 1 to 2, the grill 2 of the related art ventilation grill 1 is solid, which is a solid cylinder without noise reduction treatment. Referring to fig. 3, when the related art ventilation grille 1 is applied to the compressor compartment 3, the related art ventilation grille 1 and the back plate 4 construct the compressor compartment 3, and the compressor compartment 3 is provided therein with a compressor 5, a fan 6 and a heat exchanger 7. In order to achieve heat dissipation, a related art ventilation grille 1 is provided in the compressor compartment 3, and ventilation and heat dissipation effects can be achieved. But noise is transmitted through the ventilation port of the related art ventilation grill 1, which makes the noise reduction process difficult, resulting in a problem of poor noise reduction effect. In order to realize noise reduction, the back plate 4 is usually provided with a material such as sound-absorbing cotton for noise reduction, which is high in cost and heavy in weight, but the working environment of the compressor bin 3 is limited, and the noise reduction is often not suitable for arranging the sound-absorbing material such as sound-absorbing cotton for noise reduction. Therefore, there is an urgent need for a noise reduction scheme that can satisfy the requirements of ventilation, noise reduction, and non-cottonizing.

Before explaining the muffler according to the embodiment of the present invention, an application scenario thereof will be described. The structure which needs to give consideration to ventilation and noise reduction can be provided with the following silencing parts, for example, the silencing parts are applied to guardrails of residential buildings, so that noise generated when natural wind blows can be reduced; if the silencing piece is applied to an air inlet system of an automobile engine, the air inlet noise of the engine is reduced; for example, the muffler may be configured as a ventilation grille and installed at the air inlet and the air outlet to achieve ventilation and noise reduction, and the following embodiments will be described with reference to fig. 4 to 15 by taking the application of the muffler to the compressor compartment of the refrigeration apparatus as an example.

Referring to fig. 4, a muffler 100 according to an embodiment of the first aspect of the present invention includes: the body 110 and at least one silencer 120, silencer 120 is connected with body 110, and at least one side of silencer 120 is provided with vent 130, and vent 130 can realize ventilation of silencer 100, utilizes silencer 120 to make a sound attenuation and noise reduction when vent 130 ventilates.

An embodiment of the sound attenuating portion 120 of the sound attenuating member 100 is provided below.

Referring to fig. 5, the muffler 120 includes a housing 121 and a partition 122 disposed in the housing 121, the housing 121 is partitioned into a first chamber 123 and a second chamber 124 by the partition 122, the housing 121 is provided with a first opening 125 and a second opening 126, the first opening 125 is disposed at one side of the partition 122 and communicates with the first chamber 123, and the second opening 126 is disposed at the other side of the partition 122 and communicates with the second chamber 124. One of the first opening 125 and the second opening 126 is located on the air inlet side of the vent, and the other is located on the air outlet side of the vent.

When the ventilation opening ventilates, the wind flows to drive the sound wave to be transmitted, so that the sound wave can enter the first cavity 123 through the first opening 125, meanwhile, the sound wave can enter the second cavity 124 through the second opening 126, structural design is carried out on the first cavity 123, the first opening 125, the second cavity 124 and the second opening 126, the sound waves in a preset frequency band can be opposite in phase by matching the first cavity 123 with the second cavity 124, the sound waves with opposite phases can be offset, and noise reduction are achieved. The first opening 125 communicates with the first cavity 123 to form a first helmholtz resonator, and the second opening 126 communicates with the second cavity 124 to form a second helmholtz resonator, which also can perform noise elimination and noise reduction.

According to the silencing piece 100 provided by the embodiment of the invention, ventilation can be realized, noise reduction can be realized under the condition of ensuring the ventilation effect, and the silencing piece is simple in structure and good in noise reduction effect.

It should be noted that, the preset frequency band can be set according to actual needs, different application environments, the range of the preset frequency band can be adjusted, and the structural size of the sound-eliminating part is adjusted according to the range of the preset frequency band. Taking the noise reduction of the noise reduction member 100 applied to the compressor compartment as an example, the preset frequency band may be the frequency band where the noise of the compressor compartment is located, and according to the noise reduction requirement of the compressor compartment, the structural dimensions of the noise reduction member, that is, the dimensions, positions, proportions, etc. of the first cavity 123, the first opening 125, the second cavity 124 and the second opening 126 are designed. The design principle of the sound damping member 100 is that in a preset frequency band, sound waves can be counteracted under the cooperation of the first cavity 123 and the second cavity 124, and the counteraction is not limited to complete counteraction, and part of the counteraction can be counteracted to achieve the effects of damping sound and reducing noise.

Regarding the helmholtz resonator, it is understood that the helmholtz resonator includes a connection pipe and a resonant cavity, the resonant cavity has a certain resonant frequency, the first opening 125 and the second opening 126 formed in the housing 121 may be understood as the connection pipe, and the first cavity 123 and the second cavity 124 may be understood as the resonant cavity. When sound waves enter the Helmholtz resonator, air in the connecting pipe and air in the cavity of the resonant cavity are excited and resonated.

When the sound wave enters the first helmholtz resonator through the first opening 125, the air in the first opening 125 and the air in the first cavity 123 are excited and generate resonance, and the sound wave resonating at this time can be defined as a sound wave a; meanwhile, when the sound wave enters the second helmholtz resonator through the second opening 126, the air in the second opening 126 and the air in the second cavity 124 are excited and resonate, and the sound wave resonating at this time can be defined as sound wave B. Through carrying out structural design to first cavity 123, first opening 125, second cavity 124 and second opening 126, make the frequency channel that presets for the frequency channel that the noise was located, first cavity 123 and second cavity 124 cooperate, make sound wave A and sound wave B's opposite phase place can offset each other and realize amortization noise reduction.

Referring to fig. 5, the two sides of the partition 122 are formed in an asymmetric structure, which helps the sound waves in the first cavity 123 and the second cavity 124 form opposite phases, and helps the sound waves cancel to reduce noise. The sound wave can enter the first cavity 123 through the first opening 125, meanwhile, the sound wave can enter the second cavity 124 through the second opening 126, and the sound wave in the first cavity 123 and the sound wave in the second cavity 124 have opposite phases due to the matching of the first cavity 123 and the second cavity 124, so that the sound wave can be mutually offset to realize noise reduction. Because the sound wave in the first cavity 123 and the second cavity 124 are in the preset frequency band, the sound wave frequency bands of the same frequency band in the first cavity 123 and the second cavity 124 are opposite in phase, so that the reverse phase offset is realized, and the silencing and noise reduction functions are effectively realized.

With respect to the phase opposition of sound waves to cancel each other out, the phase opposition cancellation can be understood as "sound cancellation", i.e. sound cancellation with sound. The sound wave has wave crest and wave trough, under the condition that the wave crest and wave trough of two sound waves have the same numerical value and opposite directions, the two sound waves can interact, so that the sound waves are gradually weakened or even eliminated, and the sound wave phase opposite cancellation of sound silencing is realized.

The form of the asymmetric structure on both sides of the partition 122 is various, and the following is exemplified:

In other embodiments, the volumes of the first and second cavities 123 and 124 are different, so that the two sides of the partition 122 form an asymmetric structure. For example, the first cavity 123 and the second cavity 124 are rectangular cavities, and since the lengths and widths of the two rectangular cavities are the same, but the heights are different, the volumes of the first cavity 123 and the second cavity 124 are different, and an asymmetric structure is formed on both sides of the partition 122.

It will be appreciated that there are 3 factors for a rectangular cavity: length, width and height. The volumes of the two rectangular cavities are different, and the lengths and the heights of the two rectangular cavities are the same, and the widths of the two rectangular cavities are different; the width and the height of the two rectangular cavities are the same, and the lengths are different; it is also possible that one of the length, width and height is the same and the other two are different. That is, at least one of the height, width and length of the two rectangular cavities may be different, and the first cavity 123 and the second cavity 124 may be the same type of cavity or different types of cavities, as long as the volumes of the first cavity 123 and the second cavity 124 can be different. Such as: the first cavity 123 is a rectangular cavity, and the second cavity 124 is a semicircular cavity, and only the volumes of the first cavity 123 and the second cavity 124 are different, so that two sides of the partition 122 form an asymmetric structure.

In other embodiments, the first cavity 123 and the second cavity 124 are shaped differently so that two sides of the partition 122 form an asymmetric structure. The shapes may be different in the cross-section of the cavities, for example, the cross-section of the first cavity 123 is rectangular, and the cross-section of the second cavity 124 is triangular; the longitudinal cross-section of the cavities may be different, for example, the longitudinal cross-section of the first cavity 123 is rectangular, and the longitudinal cross-section of the second cavity 124 is circular; the three-dimensional structure of the whole cavity may be different, for example, the first cavity 123 is a semi-elliptical cavity, and the second cavity 124 is a triangular prism.

In other embodiments, the first opening 125 is a first distance from the partition 122, and the second opening 126 is a second distance from the partition 122, where the first distance is different from the second distance, so that two sides of the partition 122 form an asymmetric structure.

In other embodiments, the first opening 125 and the second opening 126 are shaped differently so that the two sides of the partition 122 form an asymmetric structure.

The shape may be different in cross-section of the openings, for example, the cross-section of the first opening 125 is rectangular, and the cross-section of the second opening 126 is trapezoidal; the shape of the longitudinal section of the opening may be different, such as: the longitudinal section of the first opening 125 is triangular and trapezoidal with a narrow upper part and a wide lower part; the three-dimensional structure of the whole cavity may be different, for example, the first opening 125 is a long and thin rectangular opening, and the second opening 126 is a square opening.

In other embodiments, the first opening 125 and the second opening 126 are different in length, so that the two sides of the partition form an asymmetric structure. It should be noted that, the length direction of the first opening 125 and the second opening 126 is perpendicular to the connecting line direction of the first opening 125 and the second opening 126, for example, when the connecting line of the first opening 125 and the second opening 126 is a horizontal line, that is, the plane where the connecting line of the first opening 125 and the second opening 126 is located is parallel to the horizontal plane, the length of the first opening 125 and the second opening 126 is perpendicular to the horizontal plane. The length of the first opening 125 may be greater than the length of the second opening 126, or the length of the first opening 125 is less than the length of the second opening 126, and the specific lengths of the first opening 125 and the second opening 126 are not limited, so long as an asymmetric structure can be formed on both sides of the partition 122.

It should be noted that, in other embodiments, the silencing portion 120 is irregular, for example, the shape of the silencing portion 120 is a cylinder after the cylinder is chamfered once, and at this time, the lengths of the first opening 125 and the second opening 126 are different, and an asymmetric structure may be formed on both sides of the partition 122.

In other embodiments, the first opening 125 and the second opening 126 have different depths, so that the two sides of the partition 122 form an asymmetric structure. The depth of the first opening 125 and the second opening 126 can be understood as the depth of the muffler 120 in the wall thickness direction of the housing 121. If the first opening 125 is a long and deep opening and the second opening 126 is a short and shallow opening, the first opening 125 and the second opening 126 have different depths, and an asymmetric structure is formed on both sides of the partition 122.

Fig. 15 illustrates that the first opening 125 and the second opening 126 are different in width. The vertical direction in fig. 15 is the width direction, and the structure is simple, and the processing and the design are convenient.

Of course, in the foregoing embodiments, one or more structures may be combined to form an asymmetric structure on both sides of the partition 122 to form an asymmetric dipole, so that the muffler 100 may perform effective noise elimination and reduction. The two sides of the partition 122 of the muffler 100 may have various asymmetric structures, and other methods may be used.

The distance from the first opening 125 to the partition 122 is a first distance, which is the maximum distance from the first cavity 123 to the partition 122. The second opening 126 is a second distance from the partition 122, which is the maximum distance from the second cavity 124 to the partition 122.

Referring to fig. 5, the cross section of the first cavity 123 is a half-ellipse, the first opening 125 is located at the left portion of the half-ellipse, and the maximum distance from the first cavity 123 to the partition 122 is the distance from the highest position of the left portion of the half-ellipse to the right portion of the half-ellipse, which is the first distance, i.e., the maximum distance from the first cavity 123 to the partition 122. The cross section of the second cavity 124 is approximately triangular, the second opening is located at the right part of the approximately triangle, the maximum distance from the second cavity 124 to the partition 122 is the distance from the lowest position of the right part of the approximately triangle to the left part of the approximately triangle, and the distance is the second distance, namely the maximum distance from the second cavity 124 to the partition 122.

The highest position is a position where the distance between the cavity and the partition 122 is largest, and the lowest position is a position where the distance between the cavity and the partition 122 is smallest. While the left and right portions are based solely on the orientation shown in the drawings, for ease of description and ease of description of the embodiments of the invention, it is not indicated or implied that the devices or elements referred to must have a particular orientation, be configured and operate in a particular orientation.

Referring to fig. 5, the second distance is greater than the first distance, so that an asymmetric structure can be formed on the two side baffles 122, thereby realizing effective noise reduction and having a simple structure. The first opening 125 and the second opening 126 are disposed along a ventilation direction of the ventilation opening. It should be noted that, the connection line of the first opening 125 and the second opening 126 may be parallel to the ventilation direction, or may form an acute angle with the ventilation direction, and the positions of the first opening 125 and the second opening 126 may be set according to actual requirements.

It is understood that the second distance may be smaller than the first distance, or the second distance may be equal to the first distance but not equal to the first distance, so long as the asymmetric structure is formed on two sides of the partition 122, so as to reduce noise.

Referring to fig. 5, the longitudinal section of the first cavity 123 is gradually increased along the direction from the first opening 125 to the partition plate, so that when wind flows through the ventilation opening, more sound waves can enter the first cavity 123, the silencing efficiency can be improved, the area of the ventilation opening can be increased, and the ventilation efficiency can be improved.

Referring to fig. 5, along the direction from the second opening 126 to the partition plate, the longitudinal section of the second cavity 124 is gradually increased, so that when wind flows through the ventilation opening, more sound waves can enter the second cavity 124, thereby improving the silencing efficiency, increasing the area of the ventilation opening, and improving the ventilation efficiency.

In some embodiments, the longitudinal cross-sectional area of the first cavity 123 is constant along the direction from the first opening 125 to the partition (as shown in fig. 6), and the structure is simple and the processing is simple. At this time, the first distance and the second distance may be different to form an asymmetric structure at both sides of the separator. Of course, when the longitudinal cross-sectional area of the first cavity 123 is unchanged, the first opening 125 and the second opening 126 may have asymmetric structures on both sides of the partition plate, with at least one of the opening depth, width, and height being different.

In some embodiments, the longitudinal cross-sectional area of the second cavity 124 is constant along the direction from the second opening 126 to the partition (as shown in fig. 6), and is simple in structure and easy to process. At this time, the second distance may be different from the first distance to form an asymmetric structure at both sides of the separator. Of course, when the longitudinal cross-sectional area of the second cavity 124 is not changed, the first opening 125 and the second opening 126 may have at least one of different opening depths, widths, and heights, and may have an asymmetric structure on both sides of the separator.

The cross-sectional shape of the first cavity 123 is at least one of rectangular, triangular, semicircular, and semi-elliptical. The cross-sectional area of the second cavity 124 may also be at least one of rectangular, triangular, semi-circular, and semi-elliptical. When the cross-sectional areas of the first cavity 123 and the second cavity 124 are at least one of semi-circular and semi-elliptical, the outline of the housing 121 is a semi-circular shell and a semi-elliptical shell, and the outline of the housing 121 is smooth, which is helpful to reduce wind resistance and ensure ventilation effect of the ventilation opening.

One embodiment of the sound attenuating portion 120 is provided as shown in connection with fig. 6.

The cross-sectional shape of the first cavity 123 is rectangular, and the cross-sectional shape of the second cavity 124 is rectangular, but the volume of the first cavity 123 is different from the volume of the second cavity 124, and an asymmetric structure is formed on both sides of the partition 122. When the ventilation opening ventilates, sound waves enter the first cavity 123 from the first opening 125, and enter the second cavity 124 from the second opening 126, under the action of the principle that the phases of the sound waves are opposite and offset by the cooperation of the first cavity 123 and the second cavity 124, the sound waves entering the first cavity 123 and the sound waves entering the second cavity 124 in a preset frequency band offset each other due to opposite phases, so that noise reduction is realized, the noise reduction part 120 is simple in structure, and effective noise reduction can be realized.

One embodiment of the sound attenuating portion 120 is provided as shown in connection with fig. 7.

The cross-section of the first cavity 123 is triangular, and the cross-section of the second cavity 124 is triangular, but the volume of the first cavity 123 is different from the volume of the second cavity 124, and an asymmetric structure is formed on both sides of the partition 122. When the ventilation opening ventilates, sound waves enter the first cavity 123 from the first opening 125, and enter the second cavity 124 from the second opening 126, under the action of the principle that the phases of the sound waves are opposite and offset by the cooperation of the first cavity 123 and the second cavity 124, the sound waves entering the first cavity 123 and the sound waves entering the second cavity 124 with the same frequency are offset mutually due to the opposite phases, so that noise reduction is realized, the noise reduction part 120 is simple in structure, and effective noise reduction can be performed.

One embodiment of the sound attenuating portion 120 is provided as shown in connection with fig. 8.

The cross-section of the first cavity 123 is semi-elliptical, and the cross-section of the second cavity 124 is semi-elliptical, but the volume of the first cavity 123 is different from the volume of the second cavity 124, and an asymmetric structure is formed on both sides of the partition 122. When the ventilation opening ventilates, sound waves enter the first cavity 123 from the first opening 125, and enter the second cavity 124 from the second opening 126, under the action of the principle that the phases of the sound waves are opposite and offset by the cooperation of the first cavity 123 and the second cavity 124, the sound waves entering the first cavity 123 and the sound waves entering the second cavity 124 with the same frequency are offset mutually due to the opposite phases, so that noise reduction is realized, the noise reduction part 120 is simple in structure, and effective noise reduction can be performed.

It should be noted that, the shape of the cross section of the first cavity 123 may be different from the shape of the cross section of the second cavity 124, and is not limited herein, and as shown in fig. 5, the shape of the cross section of the first cavity 123 is approximately a semi-ellipse, and the shape of the cross section of the second cavity 124 is approximately a triangle. It is to be understood that the structure of the sound-absorbing portion 120 of the present invention is independent of the external shape of the partition 122, and the shape of the first cavity 123 and the second cavity 124 may be the same or different as long as the two sides of the partition 122 can be designed to be asymmetric.

Referring to fig. 4, a plurality of sound-deadening portions 120 are provided, a vent 130 is provided between the sound-deadening portion 120 and the body 110, a vent 130 is provided between adjacent sound-deadening portions 120, and the plurality of vents 130 can realize ventilation of the sound-deadening member 100, so that the sound-deadening member 100 has both ventilation and noise reduction functions.

The body 110 may be an annular frame or a plate structure, the shape of the body 110 is not limited, and the connection between the body 110 and the muffler 120 may be formed by bonding, welding, injection molding, or the like, as long as the muffler 120 is connected.

In some embodiments, the muffler 100 may be provided with only one muffler 120, and a vent is provided between the muffler 120 and the body 110, so that a preset frequency band of the muffler 120 is set as a frequency band where noise is located, and ventilation and noise reduction functions may be also combined, so as to perform effective noise reduction and ventilation.

Referring to fig. 9, the muffler 100 according to another embodiment of the present invention includes a main body 110, a muffler 120, and a plate 140, wherein the plate 140 is provided with a first mounting opening, the main body 110 is connected to the plate 140, and the muffler 120 is located in the first mounting opening.

The number of the first mounting openings is not limited, and ventilation of the muffler 100 may be achieved. Referring to fig. 9, two first mounting openings are formed in the plate 140, one of the first mounting openings is used for air intake and the other is used for air exhaust. The muffler 100 shown in fig. 9 may be installed at the rear side of the refrigeration apparatus to realize ventilation and noise reduction of the refrigeration apparatus at the rear side.

Referring to fig. 9, the muffler 100 according to the embodiment of the present invention is provided with a plurality of second mounting openings 150, at least one of the second mounting openings 150 is covered with an elastic film 160, and the elastic film 160 is connected with a mass 170. The elastic membrane 160 and the mass 170 may be formed as a localized resonance type acoustic metamaterial, when the sound wave is radiated, the mass 170 resonates, and meanwhile, vibration energy is transferred to the elastic membrane 160 for energy attenuation and absorption, so that the effect of sound absorption is achieved. Under the premise of the same noise reduction effect, acoustic materials such as sound-absorbing cotton and the like can be omitted, the weight is reduced, the cost is lowered, and the non-cotton of the noise damper 100 is realized.

The mounting mode of the elastic membrane 160 and the mass block 170 on the plate body may be: first, a second mounting opening 150 is punched on the plate body 140, then an elastic film 160 is covered on the second mounting opening 150, and the second mounting opening is bonded by glue, and finally a mass block 170 is bonded on the elastic film 160.

It should be noted that, the second mounting opening 150 may be square, or may be circular or triangular, and the shape of the second mounting opening 150 may be selected according to actual requirements. The size of the second mounting openings 150 needs to be determined according to the frequency of noise to be absorbed, and the number of the second mounting openings 150 is not limited and may be determined according to the size of the board body, but the greater the number of the second mounting openings 150, the better the sound absorbing effect.

It will be appreciated that the mass 170 is disposed within the compressor housing to better dampen sound and reduce noise as sound waves radiate.

It should also be noted that the hardness and pre-tension of the elastic membrane used should be determined based on the frequency of noise to be absorbed. The weight and number of masses also need to be determined in accordance with the desired frequency of noise to be absorbed.

It should be noted that, the muffler 120 and the plate 140 may be coplanar, or may form an included angle, and the specific arrangement is not limited, so long as the requirements of ventilation and noise reduction can be met, and the muffler may be set according to the actual situation. As shown in fig. 11, the muffler 120 and the plate 140 are perpendicular to each other, the body is disposed on the left and right sides of the refrigeration device, and the plate 140 is disposed on the rear side of the refrigeration device, so that the transverse ventilation and noise reduction of the refrigeration device can be realized. Of course, the sound-absorbing portion and the plate body may be located at the rear side of the refrigeration apparatus, and ventilation is performed from the rear side of the refrigeration apparatus.

In other cases, the body and the plate body can be of an integrated structure, so that parts of the silencing piece are reduced.

Referring to fig. 10 to 14, a compressor cartridge assembly according to an embodiment of the second aspect of the present invention includes a shell body 200 and a muffler 100 according to an embodiment of the first aspect, the shell body 200 is provided with a third mounting port, and the muffler 100 is connected to the shell body 200 at the third mounting port. The muffler 100 has the above-mentioned advantages, and the compressor compartment assembly having the muffler 100 also has the above-mentioned advantages, and reference is made to the above description for details, which are not repeated here.

Referring to fig. 10 to 14, the shell body 200 and the sound attenuating member 100 construct a compressor compartment, and the sound attenuating member 100 includes a body 110, a sound attenuating portion 120, and a plate 140, with the sound attenuating portion 120 and the plate 140 not being in the same plane. A compressor 210, a fan 220 and a heat exchanger 230 are provided in the compressor compartment. When the compressor 210 and the fan 220 are operated, noise is generated.

Referring to fig. 13, the first opening 125 of the right sound-damping portion 120 faces the inner side of the compressor compartment, the second opening 126 faces the outer side of the compressor compartment, when the sound wave of the noise is transmitted to the right sound-damping portion 120, the sound wave enters the first cavity 123 through the first opening 125 of the right sound-damping portion 120, meanwhile, the sound wave also enters the second cavity through the second opening 126 of the right sound-damping portion 120, and under the action of the principle that the phase of the sound wave is opposite to that of the sound wave by matching the first cavity 123 and the second cavity 124, the sound wave entering the first cavity 123 and the sound wave with the same frequency entering the second cavity 124 can be mutually offset due to the opposite phase, so as to realize sound damping and noise reduction.

The left muffler 120 has a first opening 125 facing the outside of the compressor compartment and a second opening 126 facing the compressor compartment. When the sound wave of noise is transferred to the left muffler 120, the sound wave enters the first cavity 123 through the first opening 125 of the left muffler 120, meanwhile, the sound wave also enters the second cavity through the second opening 126 of the left muffler 120, and under the action of the principle that the phases of the sound wave are opposite and offset by matching the first cavity 123 and the second cavity 124, the sound wave entering the first cavity 123 and the sound wave with the same frequency entering the second cavity 124 can be offset mutually due to the opposite phases, so that the noise reduction and noise reduction are realized.

When the sound wave of noise is transferred to the plate 140, the mass block 170 resonates, and meanwhile, vibration energy is transferred to the elastic membrane 160 for energy attenuation and absorption, so that the effect of sound absorption is achieved, and the sound absorption and noise reduction of the silencing piece are further improved. Under the premise of the same noise reduction effect, acoustic materials such as sound-absorbing cotton and the like are omitted, the weight is reduced, the cost is reduced, and the non-cotton of the noise elimination piece is realized.

The left muffler 120 and the right muffler 120 are provided with a plurality of ventilation openings 130, which can effectively ventilate, and when the shell 121 is installed on a refrigeration device, the requirements of ventilation and noise reduction in the left and right directions can be met.

In other embodiments, the housing body 200 is provided with a plurality of third mounting openings, the compressor compartment is ventilated through the ventilation opening, at least one third mounting opening and the corresponding sound attenuating member 100 configure the air intake, and at least one third mounting opening and the corresponding sound attenuating member 100 configure the air outlet. It can be appreciated that the housing body 200 may be provided with a plurality of third mounting openings, and may form a plurality of air inlets and a plurality of air outlets, where at least one of the air inlets and the air outlets is provided with the muffler 100, so that noise reduction is performed on the premise of ventilation, ventilation and noise reduction can be achieved, and the ventilation effect and the noise reduction effect are remarkable.

The specific orientations of the first opening 125 and the second opening 126 of the muffler 120 are not limited, and one of the first opening 125 and the second opening 126 may be oriented toward the compressor compartment, and the other of the first opening 125 and the second opening 126 may be oriented toward the outside of the compressor compartment.

Referring to fig. 14, when wind blows from the right side to the left side, the left side of the muffler 120 is the air outlet side 127, the right side is the air inlet side 128, the first opening 125 faces the air outlet side 127, the second opening 126 faces the air inlet side 128, and when wind flows through the ventilation openings, sound waves can smoothly enter the first cavity 123 and the second cavity 124, so as to realize noise elimination and noise reduction.

In some embodiments, the first opening 125 faces the air inlet side 128, the second opening 126 faces the air outlet side 127, and when the air flows through the ventilation openings, the sound waves can smoothly enter the first cavity 123 and the second cavity 124, so as to realize noise elimination and noise reduction.

It will be appreciated that only one of the first opening 125 and the second opening 126 need be located on the air inlet side 128 of the vent, and the other on the air outlet side 127 of the vent.

It will be appreciated that acoustic energy is dissipated as the acoustic wave enters the cavity to resonate, the dissipated acoustic energy being related to the amount of air contained in the cavity, the frequencies of the acoustic waves absorbed by the different cavity structures being different, i.e. the frequencies of the acoustic waves absorbed by the different muffler structures being different. Referring to fig. 13, a plurality of muffler parts 120 are connected to the body 110 in parallel and the same manner, and the plurality of muffler parts 120 have the same structure, and the cross-sectional shape of the first cavity 123 is a semi-elliptical shape, and the cross-sectional shape of the second cavity 124 is a triangle, that is, the frequency bands of sound waves absorbed by the plurality of muffler parts 120 are the same, that is, the preset frequency bands are the same. Through reasonable design, the preset frequency band of the silencing part 120 can be just the sound wave frequency band of the noise to be eliminated, so that effective silencing can be performed.

In other embodiments, at least two silencing parts 120 having different preset frequencies may be disposed on the silencing member 100, that is, a plurality of silencing parts 120 disposed in parallel and having different structures are connected to the body 110. The plurality of the muffling portions 120 with different structures are arranged, so that the sound wave frequency bands of noises with different frequency bands can be effectively muffled, and the muffling effect of the muffling piece 100 is improved.

The embodiment of the third aspect of the present invention provides a refrigeration apparatus, including the compressor compartment assembly of the embodiment of the second aspect, where the compressor compartment assembly has the above-mentioned beneficial effects, and the refrigeration apparatus with the compressor compartment assembly also has the above-mentioned beneficial effects, and reference may be made to the above description specifically, and details are not repeated here.

The refrigerating apparatus may be a refrigerator, a freezer, an air conditioner, or the like, and the variety of the refrigerating apparatus is not limited herein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (14)

1. A muffler, comprising:

A body;

at least one silencing part connected to the body, and at least one side of the silencing part is provided with a vent;

The silencer comprises a shell and a baffle plate positioned in the shell, wherein a first cavity and a second cavity are separated in the shell through the baffle plate, a first opening and a second opening are formed in the shell, the first opening is positioned on one side of the baffle plate and is communicated with the first cavity, the second opening is positioned on the other side of the baffle plate and is communicated with the second cavity, one of the first opening and the second opening is positioned on the air inlet side of the ventilation opening, and the other opening is positioned on the air outlet side of the ventilation opening.

2. The muffler of claim 1, wherein the two sides of the baffle form an asymmetric structure.

3. The muffler of claim 2, wherein at least one of the volumes of the first and second cavities, the shapes of the first and second cavities, the first distance of the first opening to the baffle and the second distance of the second opening to the baffle, the shapes of the first and second openings, the lengths of the first and second openings, and the depths of the first and second openings is different.

4. The muffler of claim 1, wherein the first opening is a first distance from the baffle, the first distance being a maximum distance from the first cavity to the baffle;

And/or, the distance from the second opening to the partition plate is a second distance, and the second distance is the maximum distance from the second cavity to the partition plate.

5. The muffler of claim 4, wherein the second distance is greater than the first distance, the first opening and the second opening being disposed along a ventilation direction of the vent.

6. The muffler of claim 1, wherein a longitudinal cross-sectional area of the first cavity is constant or gradually increases in a direction from the first opening to the partition plate;

and/or, along the direction from the second opening to the partition board, the longitudinal section area of the second cavity is unchanged or gradually increased.

7. The muffler of claim 1, wherein the cross-sectional shape of the first and second cavities is at least one of rectangular, triangular, semi-circular, and semi-elliptical.

8. The muffler of claim 1, wherein a plurality of muffler portions are provided, the vent is provided between the muffler portion and the body, and the vent is provided between adjacent muffler portions.

9. The muffler of claim 8, wherein a plurality of the muffler portions arranged in parallel and identical are connected to the body, or a plurality of the muffler portions arranged in parallel and different in structure are connected to the body.

10. The muffler of any one of claims 1 to 9, further comprising a plate body, the plate body having a first mounting opening, the body being coupled to the plate body, the muffler being located within the first mounting opening.

11. The muffler of claim 10, wherein the plate body defines a plurality of second mounting openings, at least one of the second mounting openings being covered with an elastic membrane, the elastic membrane being coupled to the mass.

12. A compressor cartridge assembly comprising a shell body and the sound attenuating member of any one of claims 1 to 11, wherein the shell body is provided with a third mounting opening, the sound attenuating member is connected to the shell body and located at the third mounting opening, and the shell body and the sound attenuating member construct a compressor cartridge.

13. The compressor cartridge assembly of claim 12, wherein said first opening is toward an inside of said compressor cartridge and said second opening is toward an outside of said compressor cartridge; the shell body is provided with a plurality of third installing openings, the compressor bin is ventilated through the ventilation opening, at least one third installing opening and the corresponding silencing piece construct an air inlet, and at least one third installing opening and the corresponding silencing piece construct an air outlet.

14. A refrigeration apparatus comprising the compressor cartridge assembly of claim 12 or 13.