CN112254394A

CN112254394A - Noise reduction plate and refrigerator

Info

Publication number: CN112254394A
Application number: CN201910663106.2A
Authority: CN
Inventors: 赵海霞; 陈兴; 范强; 闫茂松; 马刚; 万彦斌
Original assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2021-01-22
Anticipated expiration: 2039-07-22
Also published as: CN112254394B

Abstract

The application relates to household electrical appliances technical field, discloses a board of making an uproar falls includes: the body has into the sound mouth, and inside is equipped with the different amortization passageway of a plurality of lengths, amortization passageway and sound mouth intercommunication. In this application, the sound wave interference has been utilized, get into the amortization passageway after the sound wave, the amortization passageway is returned by the other end reflection of amortization passageway, the reflection sound wave of some frequency and the sound wave of same frequency in the cavity offset each other because the phase is on the contrary, thereby reach the mesh of amortization, the 1/4 wavelength to the noise offsets with the same wavelength of amortization passageway length, the amortization passageway through different length can realize absorbing sound and falling the noise of different frequency, thereby effectively improve the noise reduction effect to the noise of frequency range broad. The application also discloses a refrigerator.

Description

Noise reduction plate and refrigerator

Technical Field

The application relates to the technical field of household appliances, for example to a noise reduction plate and a refrigerator.

Background

At present, the embedded refrigerator is embedded in a wall cabinet, a wall or an integral cabinet, so that the maximum utilization rate of space is realized, and the convenience of operation of people is improved. The sound wave propagation path of the embedded refrigerator is greatly different from that of the conventional refrigerator, noise of the conventional refrigerator can be transmitted from four directions of the front, the left, the right and the top, and the noise of the embedded refrigerator is only propagated from the front to the air. The sound waves are reflected in a narrow space of the cabinet, and are completely transmitted out from the front end through superposition, so that the noise value of the front end is increased. And the noise sources of the refrigerator mainly comprise compressor noise, pipeline vibration noise, fluid noise, fan noise and the like which can generate noise with different frequencies. This will directly affect the subjective perception of the user.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

with the development of technology, the noise of the refrigerator is reduced to the utmost, and further noise reduction is desired, so that the cost is greatly increased, and when the sound absorption device is used for noise reduction, the noise reduction effect on noise with a wider frequency range is not obvious because the frequency range of noise reduction of the sound absorption device is limited.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a noise reduction plate and a refrigerator, and aims to solve the technical problem that the noise reduction effect on noise with a wider frequency range is not obvious at the present stage.

In some embodiments, a noise reduction plate comprises: the body has into the sound mouth, and inside is equipped with the different amortization passageway of a plurality of lengths, amortization passageway and sound mouth intercommunication.

In some embodiments, a refrigerator includes: a body and the noise reduction plate of any of the above embodiments, the noise reduction plate being disposed below an interior of the body.

The noise reduction plate and the refrigerator provided by the embodiment of the disclosure can realize the following technical effects:

the utility model has the advantages of utilized the sound wave to interfere, after the sound wave got into the amortization passageway, by the other end reflection back amortization passageway of amortization passageway, the reflection sound wave of some frequency and the sound wave of same frequency in the cavity offset each other because phase is the opposite, thereby reach the mesh of amortization, the 1/4 wavelength to the noise offsets with the wavelength that amortization passageway length is the same, can realize through the amortization passageway of different length that the noise absorption is fallen and is fallen the noise to the noise of different frequencies, thereby effectively improve the noise reduction effect to the noise of frequency range broad.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural diagram of an embedded noise reduction device provided in an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a housing provided by an embodiment of the present disclosure;

FIG. 3 is a schematic side cross-sectional view of one configuration of a noise reduction panel provided by an embodiment of the present disclosure;

FIG. 4 is a schematic side cross-sectional view of another configuration of a noise reduction plate provided in accordance with an embodiment of the present disclosure;

FIG. 5 is a schematic side cross-sectional view of another configuration of a noise reduction plate provided in accordance with an embodiment of the present disclosure;

FIG. 6 is a schematic side cross-sectional view of another configuration of a noise reduction plate provided in accordance with an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of an example structure of a noise reduction plate combination cover housing provided by an embodiment of the disclosure;

FIG. 8 is a schematic view of a disassembled structure of a noise reduction plate provided by an embodiment of the present disclosure;

FIG. 9 is an enlarged view of A;

FIG. 10 is a schematic view of an assembly structure of a noise reduction plate provided by the embodiment of the present disclosure;

FIG. 11 is a schematic diagram of an arrangement of muffling chambers provided by embodiments of the present disclosure;

FIG. 12 is a schematic side cross-sectional view of another configuration of a noise reduction plate provided in accordance with an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of a back plate provided by an embodiment of the present disclosure;

FIG. 14 is a schematic view of another disassembled structure of a noise reduction plate provided by an embodiment of the present disclosure;

FIG. 15 is a schematic view of another disassembled structure of a noise reduction plate provided by an embodiment of the present disclosure;

FIG. 16 is a schematic structural diagram of a second orifice plate provided by embodiments of the present disclosure;

FIG. 17 is another schematic structural view of a noise reduction plate provided by embodiments of the present disclosure;

FIG. 18 is a schematic diagram of an arrangement of sound-muffling passages provided by embodiments of the present disclosure;

FIG. 19 is a side cross-sectional schematic view of a noise reduction plate provided by an embodiment of the present disclosure;

fig. 20 is a schematic view of an internal structure of a refrigerator provided in an embodiment of the present disclosure;

fig. 21 is a schematic view of the overall structure of a refrigerator according to an embodiment of the present disclosure.

Reference numerals:

100. a housing; 101. an accommodating chamber; 102. a support plate; 200. a noise reduction plate; 201. a first noise reduction plate; 202. a second noise reduction plate; 203. a third noise reduction plate; 204. a fourth noise reduction plate; 210. a back plate; 211. a vertical protrusion; 220. a first orifice plate; 221. perforating; 222. a first raised support arm; 230. a first gap; 240. an anechoic chamber; 241. a sound-deadening partition plate; 242. a notch; 243. a slot; 244. a movable partition plate; 250. a porous sound absorbing panel; 260. a second orifice plate; 261. a second raised support arm; 270. a second gap; 280. a body; 281. a sound inlet; 282. a sound deadening passage; 283. a first panel; 284. a second panel; 285. a gap; 286. a channel partition; 300. a main body; 301. a compressor; 400. compressor noise reduction plate.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The embodiment of the disclosure provides an embedded noise reduction device.

Fig. 1 shows a structure of an embedded noise reduction device provided by an embodiment of the present disclosure, and fig. 2 shows a structure of a housing provided by an embodiment of the present disclosure.

In some embodiments, an embedded noise reducer comprises: a housing 100 having a receiving chamber 101 formed therein; two or more noise reduction plates 200, provided in combination to cover the housing 100, are configured to absorb noise of different frequencies.

By adopting the optional embodiment, the noise reduction plates 200 capable of absorbing noise of different frequencies are combined and covered at different positions of the embedded noise reduction device, so that the whole embedded noise reduction device can absorb noise of different frequencies, and the noise reduction effect of the embedded noise reduction device on noise with a wider frequency range is improved.

Optionally, a support plate 102 is disposed at a lower portion of the inner wall of the housing 100. With this alternative embodiment, the support plate 102 supports the product disposed in the housing 100, and prevents the product from directly contacting the bottom position of the inner wall of the housing 100, which may cause the noise reduction plate 200 covering the bottom position of the inner wall of the housing 100 to be damaged by being pressed.

Optionally, a triangular support beam is provided on the underside of the support plate 102. By adopting the optional embodiment, the strength of the support plate 102 is increased through the triangular support beam, the supporting force of the support plate 102 is improved, and the supporting force of the support plate 102 is stronger and the structure is more stable.

Optionally, the support plate 102 is an integral attachment structure with the housing 100. With this alternative embodiment, the structure of the support plate 102 is made more stable, and the supporting force of the support plate 102 is made stronger.

Optionally, the noise reduction plate 200 is removably attached to the housing 100. By adopting the optional embodiment, the noise reduction plate 200 can be detached and replaced, or the position of the noise reduction plate 200 on the shell 100 can be adjusted, so that the use is more flexible, the positions of two or more noise reduction plates 200 can be adjusted according to requirements, and the noise reduction effect is better improved.

Optionally, the noise reduction plate 200 is connected to the housing 100 by a screw fixing structure. With this alternative embodiment, the noise reduction plate 200 is fixed to the housing 100 by a screw fixing structure, which facilitates the detachment and makes the fixing structure more stable.

Optionally, the noise reduction plate 200 is connected to the housing 100 by a magnetic attraction structure. By adopting the optional embodiment, the disassembly is more convenient, the disassembly and the movement of the noise reduction plate 200 are convenient, the combination of the noise reduction plate 200 is more diversified, and the noise reduction effect on the noise with different frequencies is improved.

Optionally, the inner wall edge of the casing 100 is provided with screw holes. With this alternative embodiment, the noise reduction plate 200 may be fixed to the inner wall of the housing 100 by screws.

Optionally, the inner wall edge of the housing 100 is provided with a magnet strip. With this alternative embodiment, the noise reduction plate 200 is attached to the inner wall of the housing 100 by the magnetic attraction of the magnet bars.

Optionally, the noise reduction plate 200 in combination covers the inner wall of the housing 100. By adopting the optional embodiment, the noise reduction plate 200 is covered on the inner wall of the shell 100, so that the noise reduction plate 200 can be better close to a noise source, and the noise reduction effect is improved.

Optionally, the noise reduction plate 200 covers the entire position of the inner wall of the housing 100. By adopting the alternative embodiment, the noise reduction plate 200 is used for reducing noise at all positions of the inner wall of the shell 100, so that the noise reduction effect is improved.

Optionally, the noise reduction plate 200 covers a portion of the inner wall of the housing 100. By adopting the alternative embodiment, the noise reduction plate 200 is covered on the part of the inner wall of the shell 100, which is contacted with the noise source, so that the use amount of the noise reduction plate 200 is reduced, the cost is saved, and a better noise reduction effect is kept.

Alternatively, two or more noise reduction panels 200 are provided to splice over the housing 100, or to laminate over the housing 100. By adopting the optional embodiment, the shell 100 can be covered in various combination forms, noise reduction can be performed on different noises, the use is more flexible, and the noise reduction effect is improved.

Optionally, the housing 100 is covered with two or more noise reduction plates 200 in a splicing manner, in this alternative embodiment, the noise reduction plates 200 are flatly laid on the housing 100 in a splicing manner, different noise reduction plates 200 can be used in different positions, noise reduction is performed according to the characteristic that noise at different positions has different frequencies, and the noise reduction effect on noise at different positions and different frequencies is improved.

Alternatively, the noise reduction plate 200 may be sized to fit over each side of the housing 100 with one or more noise reduction plates 200. With this alternative embodiment, the noise reduction plate 200 can just cover the housing 100 completely, improving the noise reduction effect.

Optionally, two or more noise reduction plates 200 are stacked to cover the housing 100, and with the optional embodiment, the housing 100 can be stacked at the same position, the noise reduction part of the single-layer noise reduction plate 200 for noise reduction can be further reduced, and different noise reduction plates 200 can be stacked to reduce noise with different frequencies, so that the overall noise reduction effect and the noise reduction effect on noise with different frequencies are improved.

FIG. 3 illustrates a structural side cross-section of a noise reduction panel provided by embodiments of the present disclosure.

Optionally, one of the two or more noise reduction plates 200 comprises: a back plate 210; the first orifice plate 220 has a plurality of through holes 221 for allowing noise to pass through, covers the back plate 210, and has a first gap 230 with the back plate 210, and the first gap 230 is provided with muffling cavities 240 with different sizes. With this alternative embodiment, noise enters the muffling cavity 240 between the first orifice plate 220 and the back plate 210 through the through hole 221, and resonates in the muffling cavity 240, thereby consuming energy of the noise and achieving the noise reduction effect, and noise reduction can be performed on noise with different frequencies through the muffling cavities 240 with different sizes.

FIG. 4 illustrates another structural side cross-section of a noise reduction panel provided by an embodiment of the present disclosure.

Optionally, one of the two or more noise reduction plates 200 comprises: a back plate 210; a first orifice plate 220 having a plurality of through holes 221 through which noise passes and covering the back plate 210 with a first gap 230 therebetween; the perforated sound absorption plate 250 is disposed in the first gap 230 between the first perforated plate 220 and the back plate 210. With this alternative embodiment, noise enters between the first hole plate 220 and the back plate 210 through the through holes 221, resonance occurs, and thus energy of the noise is consumed, and a noise reduction effect is achieved, and part of the noise is absorbed by the porous sound absorbing plate 250 in the first gap 230, so that the noise reduction effect can be improved.

Alternatively, the porous sound absorbing panel 250 is a panel-like structure of unitary construction made of sound absorbing material. By adopting the optional embodiment, the porous sound-absorbing plate 250 is made of sound-absorbing material mature in the prior art, has good sound-absorbing effect, and can effectively improve the noise reduction effect.

Alternatively, the sound absorbing material is mostly a loose and porous material, such as slag wool, blanket, etc., and the sound absorbing mechanism is that sound waves go deep into the pores of the material, and the pores are mostly open pores with interconnected interiors, and are subjected to air molecular friction and viscous resistance, and the fine fibers are subjected to mechanical vibration, so that sound energy is converted into heat energy. The sound absorption coefficient of the porous sound absorption material generally increases gradually from low frequency to high frequency, so that the sound absorption effect on high frequency and medium frequency sound is better.

FIG. 5 illustrates another structural side cross-section of a noise reduction panel provided by an embodiment of the present disclosure.

Optionally, one of the two or more noise reduction plates 200 comprises: a back plate 210; a first orifice plate 220 having a plurality of through holes 221 through which noise passes, covering the back plate 210, and having a first gap 230 with the back plate 210; the second orifice plate 260 has a plurality of through holes 221 through which noise passes, covers the first orifice plate 220, and has a second gap 270 with the first orifice plate 220. With the alternative embodiment, noise enters the second gap 270 through the through hole 221 of the first orifice plate 220, resonance is generated in the second gap 270, and further noise energy is consumed, and a noise reduction effect is achieved.

Optionally, the second orifice plate 260 has a second protrusion arm 261 at an edge thereof, and the second protrusion arm 261 is provided with a screw hole to fix the second orifice plate 260 to the housing 100 via the second protrusion arm 261. With this alternative embodiment, it is convenient to secure the entire noise reduction plate 200 to the housing 100 using the second raised arms 261 on the second orifice plate 260.

Optionally, the second raised arm 261 includes two perpendicular surfaces, wherein an edge of one surface is perpendicularly connected to an edge of the second orifice plate 260 and a screw hole is formed in the other surface. With this alternative embodiment, it is convenient to secure the entire noise reduction plate 200 to the housing 100 using the second raised arms 261 on the second orifice plate 260.

Optionally, the width of the side of the second raised arm 261 that connects to the second orifice plate 260 is greater than the width of the side of the first raised arm 222 that connects to the first orifice plate 220, and the other side of the second raised arm 261 overlies the other side of the first raised arm 222. With this alternative embodiment, when the second orifice plate 260 is positioned over the first orifice plate 220, the second raised arm 261 is supported on the first raised arm 222 and supports the second orifice plate 260 a distance from the first orifice plate 220 to form a second gap 270.

Fig. 6 illustrates another structural side cross-section provided by an embodiment of the present disclosure.

Optionally, one of the two or more noise reduction plates 200 comprises: a body 280 having a sound inlet 281 and a plurality of silencing passages 282 having different lengths therein, the silencing passages 282 communicating with the sound inlet 281; the back plate 210 covers one side surface of the body 280 and is configured to close one side of the sound inlet 281. Adopt this optional embodiment, the noise gets into the amortization passageway 282 in the body 280 through sound inlet 281, utilize the sound wave to interfere to keep away from, after the sound wave got into amortization passageway 282, by the other end reflection return amortization passageway 282 of amortization passageway 282, the reflection sound wave of some frequency and the sound wave of the same frequency in the cavity offset each other because the phase is opposite, thereby reach the mesh of amortization, 1/4 wavelength to the noise offsets with the wavelength that amortization passageway 282 length is the same, can realize carrying out the sound absorption noise reduction to the noise of different frequencies through the amortization passageway 282 of different lengths, thereby effectively improve the noise reduction effect to the noise of frequency range broad.

Fig. 7 illustrates an example structure of a noise reduction plate combination covering housing provided by the embodiment of the disclosure.

As an example, the noise reduction plate 200 has four types, namely a first noise reduction plate 201, a second noise reduction plate 202, a third noise reduction plate 203, and a fourth noise reduction plate 204.

The first noise reduction plate 201 is provided to include: a back plate 210; the first orifice plate 220 has a plurality of through holes 221 for allowing noise to pass through, covers the back plate 210, and has a first gap 230 with the back plate 210, and the first gap 230 is provided with muffling cavities 240 with different sizes.

The second noise reduction plate 202 is configured to include: a back plate 210; a first orifice plate 220 having a plurality of through holes 221 through which noise passes and covering the back plate 210 with a first gap 230 therebetween; the perforated sound absorption plate 250 is disposed in the first gap 230 between the first perforated plate 220 and the back plate 210.

The third noise reduction plate 203 is provided as one of two or more noise reduction plates 200 comprising: a back plate 210; a first orifice plate 220 having a plurality of through holes 221 through which noise passes, covering the back plate 210, and having a first gap 230 with the back plate 210; the second orifice plate 260 has a plurality of through holes 221 through which noise passes, covers the first orifice plate 220, and has a second gap 270 with the first orifice plate 220.

The fourth noise reduction plate 204 is provided to include: a body 280 having a sound inlet 281 and a plurality of silencing passages 282 having different lengths therein, the silencing passages 282 communicating with the sound inlet 281; the back plate 210 covers one side surface of the body 280 and is configured to close one side of the sound inlet 281.

Each side surface of the inner wall of the casing 100 is sequentially spliced and just covered by the first noise reduction plate 201, the second noise reduction plate 202 and the third noise reduction plate 203 from top to bottom, the fourth noise reduction plate 204 covers the bottom side surface of the inner wall of the casing 100, the sound inlet 281 faces upwards, and household appliances such as a refrigerator are embedded into the accommodating cavity 101 in the casing 100.

The embodiment discloses a noise reduction plate.

FIG. 8 shows a split structure of a noise reduction plate provided by an embodiment of the present disclosure, FIG. 9 shows a partial enlarged structure of the noise reduction plate provided by an embodiment of the present disclosure, FIG. 10 shows a combined structure of the noise reduction plate provided by an embodiment of the present disclosure, FIG. 11 shows an arrangement structure of the noise reduction cavities provided by an embodiment of the present disclosure, FIG. 12 shows a structure of a back plate provided by an embodiment of the present disclosure, FIG. 13 shows a structure of a first orifice plate provided by an embodiment of the present disclosure, FIG. 14 shows another split structure of the noise reduction plate provided by an embodiment of the present disclosure, FIG. 15 shows another split structure of the noise reduction plate provided by an embodiment of the present disclosure, FIG. 9 shows a partial enlarged structure of the noise reduction plate provided by an,

Fig. 16 illustrates a structure of a second orifice plate provided by an embodiment of the present disclosure.

In some embodiments, the noise reduction plate 200 comprises: a back plate 210; the first orifice plate 220 has a plurality of through holes 221 through which noise passes, covers the back plate 210, and has a first gap 230 with the back plate 210, and the first gap 230 has a noise-reduction chamber 240 with different sizes.

Adopt this optional embodiment, based on helmholtz resonance principle, set up the noise elimination chamber 240 of equidimension not in the board of making an uproar that falls, the noise gets into the noise elimination chamber 240 of equidimension not after, makes and has different resonant frequency in every noise elimination chamber 240 to make the whole board of making an uproar of falling can absorb the noise of different frequencies, improve the noise reduction effect of the board of making an uproar of falling to the noise of frequency range broad.

Optionally, the edge of the first gap 230 is a closed structure. With this alternative embodiment, the edge of the first gap 230 is closed, so as to prevent the noise from leaking from the edge of the first gap 230, and the noise can be sufficiently reduced in the first gap 230, thereby improving the noise reduction effect.

Optionally, the edge of the back-plate 210 has a vertical protrusion 211, so that the back-plate 210 presents a trough-shaped structure configured to close the edge of the first gap 230. By adopting the optional embodiment, the vertical protrusion 211 at the edge of the back plate 210 is utilized to seal the edge of the first gap 230, the structure is simple and easy to realize, noise can be sufficiently reduced in the first gap 230, and the noise reduction effect is improved.

Optionally, the first orifice plate 220 is provided with a first protrusion arm 222 at the edge, and the first protrusion arm 222 is provided with a screw hole to fix the first orifice plate 220 on the housing 100 through the first protrusion arm 222. With this alternative embodiment, it is convenient to secure the entire noise reduction plate 200 to the housing 100 using the first raised arms 222 on the first orifice plate 220.

Alternatively, the first raised arm 222 includes two perpendicular surfaces, wherein an edge of one surface is perpendicularly connected to an edge of the first orifice plate 220 and a screw hole is formed in the other surface. With this alternative embodiment, it is convenient to secure the entire noise reduction plate 200 to the housing 100 using the first raised arms 222 on the first orifice plate 220.

Optionally, the back plate 210 is detachably connected to the first hole plate 220. With this alternative embodiment, the back plate 210 is removable from the first orifice plate 220 to facilitate cleaning or adjustment of the muffling chamber 240 between the back plate 210 and the first orifice plate 220.

Optionally, the back plate 210 and the first hole plate 220 are fixedly connected by screws. With this alternative embodiment, the back plate 210 and the first aperture plate 220 can be effectively and fixedly connected by screws, so that the back plate 210 and the first aperture plate 220 are stably connected and are easy to detach.

Optionally, screw fixing holes are formed in the first hole plate 220, screw fixing holes are also formed in positions, corresponding to the screw fixing holes, on the back plate 210, and screws respectively penetrate through the two screw fixing holes, so that the first hole plate 220 and the back plate 210 can be fixedly connected. With this alternative embodiment, the back plate 210 and the first orifice plate 220 are connected stably and are easy to detach.

Optionally, the back plate 210 and the first hole plate 220 are connected by a snap. With this alternative embodiment, the back plate 210 is connected to the first orifice plate 220 by a snap structure, which facilitates the detachable connection between the back plate 210 and the first orifice plate 220.

Optionally, the back plate 210 is provided with a latch, and the first hole plate 220 is provided with a slot. With this alternative embodiment, the back plate 210 and the first aperture plate 220 can be connected by inserting the latch into the slot, which facilitates the detachable connection between the back plate 210 and the first aperture plate 220.

Optionally, the muffling chambers 240 of different sizes do not communicate with each other. With the alternative embodiment, each muffling cavity 240 forms an independent space, so that the sound waves can resonate in the independent muffling cavity 240, and the noise reduction effect is improved.

Optionally, the method further comprises: and a silencing partition 241 configured to partition the first gap 230 into silencing chambers 240 of different sizes. By adopting the optional embodiment, the silencing partition plate 241 is supported in the back plate 210 and the first pore plate 220, so that the stability between the back plate 210 and the first pore plate 220 is improved, the silencing cavities 240 with different sizes can be better obtained, and the noise reduction effect is improved.

Optionally, the sound attenuating barrier 241 is a unitary structure, integrally clamped within the first gap 230. By adopting the optional embodiment, the manufacturing is convenient, the silencing partition plate 241 is more stable in structure and not easy to deform, and the structural stability of the silencing cavity 240 is enhanced.

Optionally, the sound-deadening partition 241 is fixedly connected with the back plate 210 and the first orifice plate 220 by welding or bonding. With this alternative embodiment, the independence between the muffling chambers 240 can be maintained, preventing the effects from affecting each other and reducing noise.

Optionally, a portion of the sound damping partition 241 is removably attached and configured to removably connect two or more sound damping chambers 240. With the alternative embodiment, two or more muffling cavities 240 can be communicated to obtain a larger muffling cavity 240, the size of the muffling cavity 240 can be adjusted, and the noise reduction effect on noises with different frequencies is better.

Optionally, a notch 242 is formed in a part of the silencing partition 241, slots 243 are formed in the silencing partition 241 at two ends of the notch 242, and a movable partition 244 is arranged in the slot 243. Adopt this optional embodiment, insert the breach 242 of eliminating the noise baffle 241 in the slot 243 through the both ends with activity baffle 244 and seal, make the breach intercommunication two or more eliminating the noise chamber 240 when taking off activity baffle 244, adjust the size in eliminating the noise chamber 240, it is better to the noise reduction effect of the noise of different frequencies.

Optionally, the method further comprises: and the porous sound absorption plate 250 is arranged in the silencing cavity 240. With this alternative embodiment, the noise entering the muffling chamber 240 is absorbed by the porous sound absorbing sheet 250, thereby improving the noise reduction effect.

Optionally, the size of the perforated sound absorbing panel 250 is adapted to the size of the muffling chamber 240 so that it does not rock within the muffling chamber 240. With this alternative embodiment, the perforated sound absorbing panel 250 is placed right into the muffling chamber 240 without shaking, thereby preventing noise from being generated.

Optionally, the method further comprises: the second orifice plate 260 has a plurality of through holes 221 through which noise passes, covers the first orifice plate 220, and has a second gap 270 with the first orifice plate 220. With the alternative embodiment, noise enters the second gap 270 through the through hole 221 of the first orifice plate 220, resonance is generated in the second gap 270, and further noise energy is consumed, and a noise reduction effect is achieved.

Optionally, the first orifice plate 220 and the second orifice plate 260 have different perforation rates. With this alternative embodiment, different perforation rates can absorb different frequencies of noise, and by providing different perforation rates for the first perforated plate 220 and the second perforated plate 260, different frequencies of noise can be absorbed, thereby improving the noise reduction effect on different frequencies of noise.

Alternatively, the perforations 221 of the first orifice plate 220 and the second orifice plate 260 have different pore sizes. With this alternative embodiment, different apertures may absorb different frequencies of noise, and different apertures may be provided through the perforations 221 of the first and second

perforated plates

220, 260 to absorb different frequencies of noise, thereby improving the noise reduction effect on different frequencies of noise.

Optionally, the first orifice plate 220 and the second orifice plate 260 have different thicknesses. With this alternative embodiment, the thickness of the first orifice plate 220 is different from that of the second orifice plate 260, which is equivalent to the depth of the through hole 221 is different, and the through hole 221 has different depths to absorb noise with different frequencies, thereby improving the noise reduction effect on the noise with different frequencies.

Optionally, the first gap 230 and the second gap 270 have different thicknesses. With this alternative embodiment, different thicknesses of the first gap 230 and the second gap 270 may absorb noise of different frequencies, thereby improving the noise reduction effect on noise of different frequencies.

Optionally, the noise reduction frequency is related to the perforation rate, the sheet thickness, the pore diameter, and the depth of air layer as follows:

wherein the content of the first and second substances,

f_ris the noise reduction frequency; c is the speed of sound; p is the perforation rate; t is the plate thickness, i.e. the thickness of the first orifice plate 220 and the second orifice plate 260; d is the pore size, i.e., the diameter of the perforations 221; l is the depth of the air layer, i.e., the thickness of the first gap 230, the second gap 270. With this alternative embodiment, the values of the various parameters are adjusted according to a formula so that they can absorb noise at different frequencies.

Fig. 17 shows another configuration of a noise reduction plate provided by an embodiment of the present disclosure, fig. 18 shows an arrangement of sound-deadening passageways provided by an embodiment of the present disclosure, and fig. 19 shows a side cross-section of a noise reduction plate provided by an embodiment of the present disclosure.

In some embodiments, the noise reduction plate 200 comprises: the body 280 has a sound inlet 281, and a plurality of silencing passages 282 having different lengths are provided therein, and the silencing passages 282 are communicated with the sound inlet 281.

Adopt this optional embodiment, the sound wave interference has been utilized, after the sound wave got into amortization passageway 282, by amortization passageway 282's the other end reflection return amortization passageway 282, the reflection sound wave of some frequency and the sound wave of same frequency in the cavity offset each other because the phase is opposite to reach the mesh of amortization, the 1/4 wavelength of noise offsets with the same wavelength of amortization passageway 282 length, can realize carrying out the sound absorption noise reduction to the noise of different frequencies through the amortization passageway 282 of different lengths, thereby effectively improve the noise reduction effect to the noise of the wider noise of frequency range.

Optionally, the body 280 includes a sound attenuating channel 282 therein around the inner periphery of the body. With this alternative embodiment, the length of the sound-attenuating passageway 282 may be substantially increased to attenuate higher wavelength noise.

Optionally, the method further comprises: the back plate 210 covers the sound inlet 281 of the body 280, and is configured to close one side of the sound inlet 281. Adopt this optional embodiment, will go into one side of sound mouth 281 and seal, reflect the sound wave of noise, make the sound wave enter into amortization passageway 282 more easily, and then improve noise reduction.

Optionally, the back plate 210 is a flat plate. With this alternative embodiment, the back plate 210 is used as a base of the body 280, and covers one side of the body 280 better, and has a better sound wave reflection effect, so that sound waves can enter the sound attenuation channel 282 more easily, and the noise reduction effect is further improved.

Optionally, the side of the back plate 210 is provided with a protrusion, and the protrusion is provided with a screw hole. With this alternative embodiment, it is convenient to connect the back-plate 210 with its mounting location.

Optionally, the back plate 210 is made of a high-density material. Such as stainless steel plates, ceramic plates. By adopting the optional embodiment, the reflection effect of the back plate 210 on sound waves is improved, and the noise reduction effect is further improved.

Optionally, the body 280 comprises: a first panel 283; a second panel 284; is parallel to the first panel 283 and has a gap 285 with the first panel 283; a channel partition 286; disposed in a gap 285 between the second panel 284 and the first panel 283, is configured to separate the gap 285 between the second panel 284 and the first panel 283 to obtain a sound-deadening passageway 282. With this alternative embodiment, the channel spacer 286 is supported between the first and

second panels

283, 284 to enhance the stability of the first and

second panels

283, 284.

Optionally, the channel spacer 286 is a unitary structure integrally clamped within the gap 285 between the second panel 284 and the first panel 283. With this alternative embodiment, manufacturing is facilitated, and the structure of channel barrier 286 is more stable, making channel barrier 286 less prone to deformation, maintaining the structural stability of sound attenuating channel 282.

Alternatively, the channel spacer 286 may be fixedly connected to the first panel 283 and the second panel 284 by welding, bonding, or the like. Adopt this optional embodiment, make and be connected more stably between passageway baffle 286 and first panel 283 and the second panel 284, make the separated amortization passageway 282 mutual seal of passageway baffle 286 independent, can not cause the sound wave of adjacent amortization passageway 282 to reveal, and then influence the noise reduction effect.

Optionally, one of the first panel 283 and the second panel 284 is provided with a sound inlet 281. With this alternative embodiment, the sound inlet 281 is opened on one side, and sound waves of noise enter the sound deadening channel 282 more easily by reflection after entering from the sound inlet 281, thereby improving the noise reduction effect.

Alternatively, the silencing passage 282 has one end communicating with the sound inlet 281 and the other end closed. With this alternative embodiment, the other end of the muffling channel 282 is closed, and the sound wave of the noise can be reflected, and the reflected sound wave of the noise interferes with the newly entered sound wave of the noise to cancel out, thereby improving the noise reduction effect.

Alternatively, both ends of the sound deadening channel 282 communicate with the sound inlet 281. With this alternative embodiment, the sound waves of the noise enter the silencing passage 282 simultaneously at both ends, and the sound waves of the same frequency meet in the silencing passage 282 to interfere with each other and cancel each other, thereby improving the noise reduction effect.

Alternatively, both ends of the sound deadening channel 282 communicate with the sound inlet 281, and a closing piece is provided inside the sound deadening channel 282 to divide the sound deadening channel 282 into two parts of different sizes. By adopting the optional embodiment, the silencing passages 282 with different lengths are obtained, noise reduction can be performed on noise with different frequencies, and the noise reduction effect is improved.

Optionally, the body 280 has a rectangular structure, and the sound-deadening channel 282 is parallel to the side of the rectangular structure of the body 280. With this alternative embodiment, more muffling channels 282 of different lengths can be accommodated in the body 280, thereby improving the noise reduction effect.

Alternatively, the partial muffling channel 282 is arranged in a straight line configuration and the partial muffling channel 282 is arranged to have one or more right angle turns. Adopt this optional embodiment, increase the length of amortization passageway 282 through quarter turn, in the limited space of body 280 and when not influencing the inside amortization passageway 282 density of body 280, can be equipped with the amortization passageway 282 of multiple different length, improve the noise reduction effect to the noise of frequency range broad.

The embodiment of the disclosure provides a refrigerator.

Fig. 20 shows an internal structure of a refrigerator provided in an embodiment of the present disclosure, and fig. 21 shows an overall structure of the refrigerator provided in an embodiment of the present disclosure.

In some embodiments, a refrigerator includes: the main body 300 and the noise reduction plate 200 of any of the above embodiments, the noise reduction plate 200 being disposed below and inside the main body 300.

By adopting the optional embodiment, the noise reduction plate 200 is utilized to reduce the noise in the refrigerator, the noise reduction effect of the refrigerator is improved, and the experience of a user is improved.

Optionally, the main body 300 includes a compressor bin 301 disposed above the sound inlet 281 of the noise reduction plate 200. With this alternative embodiment, the main noise source of the refrigerator is the noise generated by the compressor, and the main noise source is aligned with the sound inlet 281 of the noise reduction plate 200, so that the noise can more easily enter the noise reduction passage 282 through the sound inlet 281, thereby improving the noise reduction effect.

Optionally, the refrigerator further comprises: the compressor noise reduction plate 400 is disposed outside the compressor compartment 301, or disposed inside the compressor compartment 301. By adopting the optional embodiment, the noise reduction effect on the position of the compressor bin 301 is enhanced by the compressor noise reduction plate 400, so that the noise reduction effect of the whole refrigerator is improved.

Optionally, a compressor noise reduction plate 400 covers the outer sidewall of the compressor bin 301. With this alternative embodiment, the installation of the compressor noise reduction plate 400 is facilitated, and the direct contact with the compressor compartment 301 better absorbs and reduces noise.

Optionally, a compressor noise reduction plate 400 covers the inside wall of the compressor bin 301. By adopting the alternative embodiment, the compressor noise reduction plate 400 is closer to the noise source, and the noise reduction effect is increased.

Optionally, the compressor noise reduction plate 400 is covered on the inner side wall of the main body 300 near the compressor compartment 301. With this alternative embodiment, the installation of the compressor noise reduction plate 400 is facilitated.

Alternatively, the compressor noise reduction plate 400 may be the noise reduction plate 200 of any of the embodiments described above.

In some embodiments, a refrigerator includes: the body 300 and the embedded noise reducer of any of the above embodiments, the body 300 being disposed within the receiving cavity 101 of the embedded noise reducer.

By adopting the optional embodiment, the embedded noise reduction device is wrapped outside the refrigerator, so that the overall noise reduction effect of the refrigerator is improved, and better experience is provided for a user.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments of the present application includes the full ambit of the claims, as well as all available equivalents of the claims. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in a device that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein, as used herein, are defined as orientations or positional relationships based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, and indirect connections via intermediary media, where the specific meaning of the terms is understood by those skilled in the art as appropriate. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims.

Claims

1. A noise reduction panel, comprising:

the body has into the sound mouth, and inside is equipped with the different amortization passageway of a plurality of lengths, the amortization passageway with go into the sound mouth intercommunication.

2. The noise reduction panel of claim 1, further comprising:

and a back plate covering one side of the sound inlet of the body and configured to close one side of the sound inlet.

3. The noise reduction plate of claim 1, wherein the body comprises:

a first panel;

a second panel parallel to the first panel with a gap therebetween;

a channel partition disposed in a gap between the second panel and the first panel, configured to partition the gap between the second panel and the first panel to obtain the muffling channel.

4. A noise attenuation panel according to claim 3, wherein one of the first and second panels is provided with the sound inlet.

5. The noise reduction panel of claim 1, wherein the sound attenuating channel is closed at one end by communication with the sound inlet.

6. The noise attenuation panel of claim 1, wherein the body is a rectangular structure and the sound attenuation channels are parallel to the sides of the rectangular structure of the body.

7. A noise attenuation panel according to any of claims 1 to 6, characterized in that part of the sound attenuation channel is arranged in a straight configuration and part of the sound attenuation channel is arranged to have one or more right angle turns.

8. A refrigerator, characterized by comprising: a body and a noise reduction plate as claimed in any of claims 1 to 7, the noise reduction plate being disposed beneath the interior of the body.

9. The refrigerator of claim 8, wherein the main body comprises a compressor bin disposed above the sound inlet of the noise reduction plate.

10. The refrigerator according to claim 9, further comprising:

and the compressor noise reduction plate is arranged outside the compressor bin or in the compressor bin.