CN112254394B

CN112254394B - Noise reduction plate and refrigerator

Info

Publication number: CN112254394B
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: 2023-05-23
Anticipated expiration: 2039-07-22
Also published as: CN112254394A

Abstract

The application relates to the technical field of household appliances, discloses a board of making an uproar falls includes: the body has a sound inlet, and inside is equipped with a plurality of different amortization passageway of length, amortization passageway and sound inlet intercommunication. In this application, utilized the sound wave to interfere, after the sound wave gets into the amortization passageway, by amortization passageway's the other end reflection back amortization passageway, the reflection sound wave of certain frequency offset each other because the opposite phase is opposite with the sound wave of same frequency in the cavity to reach the purpose of amortization, offset the 1/4 wavelength of noise and the same wavelength of amortization passageway length, can realize carrying out the sound absorption to the noise of different frequencies through the amortization passageway of different length and fall the noise, thereby effectively improve the noise reduction effect to the noise that frequency range is wider. 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, the noise of the conventional refrigerator can be transmitted from four directions of front, left, right and top, and the noise of the embedded refrigerator is only propagated from front to air. The sound wave is reflected in a series in a narrow space of the cabinet, and is 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 extremely reduced, and the cost is greatly increased when the noise is reduced by the sound-absorbing device, and the noise-reducing effect on the noise with wider frequency range is not obvious because the frequency range of the noise-reducing device is limited when the noise is reduced by the sound-absorbing device.

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, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a noise reduction plate and a refrigerator, which are used for solving 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, the noise reduction plate includes: the body has a sound inlet, and inside is equipped with a plurality of different amortization passageway of length, amortization passageway and sound inlet intercommunication.

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

The embodiment of the disclosure provides a noise reduction plate and a refrigerator, which can realize the following technical effects:

by utilizing the interference of sound waves, after the sound waves enter the silencing channel, the sound waves are reflected back to the silencing channel by the other end of the silencing channel, and the reflected sound waves with certain frequencies and the sound waves with the same frequency in the cavity are mutually counteracted due to opposite phases, so that the purpose of silencing is achieved, 1/4 wavelength of noise and the same wavelength of the silencing channel are counteracted, noise with different frequencies can be absorbed and reduced through the silencing channels with different lengths, and the noise reduction effect of the noise with a wider frequency range is effectively improved.

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 and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

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 view of a housing provided by an embodiment of the present disclosure;

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

FIG. 4 is a schematic side cross-sectional view of another construction of a noise reduction plate provided by an embodiment of the present disclosure;

FIG. 5 is a schematic side cross-sectional view of another structure of a noise reduction plate provided by an embodiment of the present disclosure;

FIG. 6 is a schematic side cross-sectional view of another structure of a noise reduction plate provided by an embodiment of the present disclosure;

FIG. 7 is a schematic view of an exemplary construction of a noise reduction plate combination cover housing provided by an embodiment of the present disclosure;

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

FIG. 11 is a schematic diagram of an arrangement of a sound-attenuating cavity provided by an embodiment of the present disclosure;

FIG. 12 is a schematic side cross-sectional view of another construction of a noise reduction plate provided by an embodiment of the present disclosure;

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

FIG. 14 is another split structural schematic of a noise reduction plate provided by an embodiment of the present disclosure;

FIG. 15 is another split structural schematic of a noise reduction plate provided by an embodiment of the present disclosure;

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

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

FIG. 18 is a schematic view of an arrangement of sound deadening passages provided by an embodiment of the present disclosure;

FIG. 19 is a schematic side cross-sectional 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 by an embodiment of the present disclosure;

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

Reference numerals:

100. a housing; 101. a receiving 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 acoustic cavity; 241. a sound-deadening partition; 242. a notch; 243. a slot; 244. a movable partition; 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 passageway; 283. a first panel; 284. a second panel; 285. a gap; 286. a channel separator; 300. a main body; 301. a compressor bin; 400. a compressor noise reduction plate.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. 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 still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

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

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

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

With the adoption of the alternative embodiment, the noise reduction plates 200 capable of absorbing noise with 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 with 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 provided on the lower portion of the inner wall of the housing 100. With this alternative embodiment, the support of the product disposed in the housing 100 by the support plate 102 prevents the product from directly contacting the bottom portion of the inner wall of the housing 100, resulting in crush damage to the noise reduction plate 200 covering the bottom portion of the inner wall of the housing 100.

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

Alternatively, the support plate 102 is integrally connected 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 detachably connected to the housing 100. With the adoption of the alternative 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 noise reduction device is more flexible to use, 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, so that the disassembly is convenient, and the fixing structure is more stable.

Optionally, the noise reduction plate 200 is connected with the housing 100 through a magnetic attraction structure. With the adoption of the alternative embodiment, the disassembly is more convenient, the disassembly is convenient, the movable noise reduction plate 200 is convenient, the combination of the noise reduction plate 200 is more diversified, and the noise reduction effect on noise with different frequencies is improved.

Optionally, the edge of the inner wall of the housing 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 edges of the inner wall of the housing 100 are provided with magnet bars. With this alternative embodiment, the noise reduction plate 200 is attracted to the inner wall of the housing 100 by the magnetic attraction force of the magnet bar.

Alternatively, the noise reduction plate 200 covers the inner wall of the housing 100 in combination. With this alternative embodiment, the noise reduction plate 200 is covered on the inner wall of the housing 100, so that the noise reduction plate 200 can better approach the noise source, and the noise reduction effect is improved.

Alternatively, the noise reduction plate 200 covers all positions of the inner wall of the housing 100. With this alternative embodiment, the noise reduction effect is improved by reducing the noise of all the positions of the inner wall of the housing 100 by the noise reduction plate 200.

Alternatively, the noise reduction plate 200 covers a portion of the inner wall of the housing 100. With this alternative embodiment, by covering the noise reduction plate 200 on the portion of the inner wall of the housing 100 that contacts the noise source, the amount of use of the noise reduction plate 200 is reduced, saving costs while maintaining a good noise reduction effect.

Optionally, two or more noise reduction plates 200 are provided to splice the cover shells 100 or to laminate the cover shells 100. With this alternative embodiment, the housing 100 may be covered in various combinations, so that different noises may be reduced, which is more flexible to use and improves the noise reduction effect.

Optionally, two or more noise reduction plates 200 are spliced to cover the housing 100, in this alternative embodiment, the noise reduction plates 200 are tiled on the housing 100 in a spliced coverage mode, different noise reduction plates 200 can be adopted at different positions, noise reduction is performed for noise at different positions according to characteristics of different frequencies, and noise reduction effects of noise at different positions and different frequencies are improved.

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

Alternatively, two or more noise reduction plates 200 are stacked to cover the housing 100, and in this alternative embodiment, the housing 100 may be stacked to cover the same position, the remaining noise portion of the single noise reduction plate 200 is further reduced, and different noise reduction plates 200 may be stacked to reduce noise of different frequencies, so as to improve the overall noise reduction effect and the noise reduction effect on noise of different frequencies.

Fig. 3 illustrates a structural side cross-section of a noise reduction plate provided by an embodiment of the present disclosure.

Alternatively, one of the two or more noise reduction plates 200 includes: 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 is provided with silencing cavities 240 having 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 holes 221, and resonates in the muffling cavity 240, so that noise energy is consumed, the noise reduction effect is achieved, and noise with different frequencies can be reduced through the muffling cavities 240 with different sizes.

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

Alternatively, one of the two or more noise reduction plates 200 includes: a back plate 210; the first orifice plate 220 has a plurality of through holes 221 for noise to pass through, and covers the back plate 210, and has a first gap 230 between the back plate 210 and the first orifice plate; a porous acoustic panel 250 is disposed within the first gap 230 between the first orifice plate 220 and the back plate 210. With this alternative embodiment, noise enters between the first orifice plate 220 and the back plate 210 through the perforation 221 to generate resonance, thereby consuming energy of the noise to achieve noise reduction effect, and part of the noise is absorbed by the porous sound absorbing plate 250 in the first gap 230, so that noise reduction effect can be improved.

Alternatively, the porous sound absorbing panel 250 is a plate-shaped structure of a unitary structure made of sound absorbing material. With this alternative embodiment, the porous sound absorbing plate 250 is made of sound absorbing materials mature in the prior art, so that the sound absorbing effect is good, and the noise reducing effect can be effectively improved.

Alternatively, the sound absorbing material is mostly loose and porous materials such as slag wool, blankets, etc., and the sound absorbing mechanism is that sound waves penetrate into the pores of the material, and the pores are mostly open pores which are mutually communicated inside, and are subjected to air molecular friction and viscous resistance, and fine fibers are mechanically vibrated, so that the sound energy is converted into heat energy. The sound absorption coefficient of the porous sound absorption material is generally gradually increased from low frequency to high frequency, so the sound absorption effect on high frequency and medium frequency is better.

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

Alternatively, one of the two or more noise reduction plates 200 includes: 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 is provided with 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 this alternative embodiment, noise enters the second gap 270 through the through hole 221 of the first orifice plate 220, resonates in the second gap 270, thereby consuming noise energy, achieving noise reduction effect, after the noise is reduced for the first time through the second gap 270, part of the noise enters the first gap 230 through the through hole 221 of the second orifice plate 260, resonates again, consuming noise energy, and part of the noise entering the first gap 230 can re-enter the second gap 270 after being reflected to reduce noise, thereby improving noise reduction effect by repeating noise reduction.

Optionally, a second protruding arm 261 is provided at the edge of the second orifice plate 260, and a screw hole is provided on the second protruding arm 261 to fix the second orifice plate 260 to the housing 100 through the second protruding arm 261. With this alternative embodiment, the entire noise reduction plate 200 is conveniently secured to the housing 100 by the second raised arms 261 on the second aperture plate 260.

Alternatively, the second protruding arm 261 includes two vertical 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, the entire noise reduction plate 200 is conveniently secured to the housing 100 by the second raised arms 261 on the second aperture plate 260.

Optionally, the width of the side of the second boss arm 261 connected with the second orifice plate 260 is greater than the width of the side of the first boss arm 222 connected with the first orifice plate 220, and the other side of the second boss arm 261 covers the other side of the first boss arm 222. With this alternative embodiment, when the second orifice plate 260 is placed over the first orifice plate 220, the second raised arm 261 is supported on the first raised arm 222 and a distance is provided between the second orifice plate 260 and the first orifice plate 220 to form a second gap 270.

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

Alternatively, one of the two or more noise reduction plates 200 includes: the main body 280 is provided with a sound inlet 281, and a plurality of silencing channels 282 with different lengths are arranged in the main body, and the silencing channels 282 are communicated with the sound inlet 281; the back plate 210, covering one side of the body 280, is configured to close one side of the sound inlet 281. By adopting the alternative embodiment, noise enters the silencing channel 282 in the body 280 through the sound inlet 281, and is far away by utilizing sound wave interference, after entering the silencing channel 282, the sound wave is reflected back to the silencing channel 282 by the other end of the silencing channel 282, and the reflected sound wave with certain frequency and the sound wave with the same frequency in the cavity are mutually counteracted due to opposite phases, so that the purpose of silencing is achieved, 1/4 wavelength of the noise is counteracted with the wavelength with the same length as the silencing channel 282, and the noise with different frequencies can be absorbed and reduced through the silencing channels 282 with different lengths, so that the noise reduction effect of the noise with wider frequency range is effectively improved.

Fig. 7 illustrates an example structure of a noise reduction plate combined cover housing provided by an embodiment of the present disclosure.

As one example, the noise reduction plate 200 has four types, that is, 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, respectively.

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 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 is provided with silencing cavities 240 having different sizes.

The second noise reduction plate 202 is provided to include: a back plate 210; the first orifice plate 220 has a plurality of through holes 221 for noise to pass through, and covers the back plate 210, and has a first gap 230 between the back plate 210 and the first orifice plate; a porous acoustic panel 250 is disposed within the first gap 230 between the first orifice 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 including: 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 is provided with 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: the main body 280 is provided with a sound inlet 281, and a plurality of silencing channels 282 with different lengths are arranged in the main body, and the silencing channels 282 are communicated with the sound inlet 281; the back plate 210, covering one side of the body 280, is configured to close one side of the sound inlet 281.

Each side surface of the inner wall of the housing 100 is 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 in sequence, the fourth noise reduction plate 204 covers the bottom side surface of the inner wall of the housing 100 and the sound inlet 281 is upward, and home appliances such as refrigerators are embedded into the accommodating cavity 101 in the housing 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 partially enlarged structure of a noise reduction plate provided by an embodiment of the present disclosure, FIG. 10 shows a combined structure of a noise reduction plate provided by an embodiment of the present disclosure, FIG. 11 shows an arrangement of 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 aperture plate provided by an embodiment of the present disclosure, FIG. 14 shows another split structure of a noise reduction plate provided by an embodiment of the present disclosure, FIG. 15 shows another split structure of a noise reduction plate provided by an embodiment of the present disclosure,

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 includes: a back plate 210; the first orifice plate 220 has a plurality of through holes 221 for noise to pass through, and covers the back plate 210, and a first gap 230 is formed between the first orifice plate and the back plate 210, and a silencing cavity 240 with different sizes is arranged in the first gap 230.

By adopting the alternative embodiment, based on the Helmholtz resonance principle, the noise elimination cavities 240 with different sizes are arranged in the noise elimination plate, and after noise enters the noise elimination cavities 240 with different sizes, each noise elimination cavity 240 is provided with different resonance frequencies, so that the whole noise elimination plate can absorb noise with different frequencies, and the noise elimination effect of the noise elimination plate on noise with wider frequency range is improved.

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 that noise is prevented from leaking from the edge of the first gap 230, and noise can be sufficiently reduced in the first gap 230, thereby improving noise reduction effect.

Optionally, the edge of the back plate 210 has a vertical protrusion 211, so that the back plate 210 presents a channel structure configured to close the edge of the first gap 230. With this alternative embodiment, the edge of the first gap 230 is closed by using the vertical protrusions 211 at the edge of the back plate 210, so that the structure is simple and easy to implement, and noise can be sufficiently reduced in the first gap 230, thereby improving the noise reduction effect.

Optionally, a first protruding arm 222 is provided at an edge of the first orifice plate 220, and a screw hole is provided on the first protruding arm 222 to fix the first orifice plate 220 on the housing 100 through the first protruding arm 222. With this alternative embodiment, the entire noise reduction plate 200 is conveniently secured to the housing 100 by the first raised arms 222 on the first aperture plate 220.

Optionally, the first protruding arm 222 includes two vertical surfaces, wherein an edge of one surface is perpendicularly connected to an edge of the first hole plate 220, and a screw hole is formed on the other surface. With this alternative embodiment, the entire noise reduction plate 200 is conveniently secured to the housing 100 by the first raised arms 222 on the first aperture plate 220.

Optionally, the back plate 210 is detachably connected to the first orifice plate 220. With this alternative embodiment, the back plate 210 is removed from the first orifice plate 220, facilitating cleaning or adjustment of the sound damping chamber 240 between the back plate 210 and the first orifice plate 220.

Optionally, the back plate 210 is fixedly connected with the first hole plate 220 through screws. With this alternative embodiment, the back plate 210 and the first orifice plate 220 may be effectively and fixedly connected by screws, so that the back plate 210 and the first orifice plate 220 are stably connected and are convenient to detach.

Optionally, screw fixing holes are formed on the first hole plate 220, and screw fixing holes are also formed on the back plate 210 at positions corresponding to the screw fixing holes, and the screws respectively pass through the two screw fixing holes to fixedly connect the first hole plate 220 with the back plate 210. With this alternative embodiment, the back plate 210 is connected to the first orifice plate 220 stably and is easy to disassemble.

Optionally, the back plate 210 is connected with the first hole plate 220 through a buckle. With this alternative embodiment, the back plate 210 is connected to the first orifice plate 220 by a snap-fit structure, facilitating 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 may be connected to the first orifice plate 220 by inserting the latch into the slot, facilitating the detachable connection between the back plate 210 and the first orifice plate 220.

Alternatively, the different muffler chambers 240 may not communicate with each other. With this alternative embodiment, each of the sound-deadening chambers 240 forms an independent space, facilitating the sound waves to resonate within the independent sound-deadening chamber 240, enhancing the noise reduction effect.

Optionally, the method further comprises: the sound damping partition 241 is configured to partition the first gap 230 to obtain sound damping chambers 240 having different sizes. With the adoption of the alternative embodiment, the stability between the back plate 210 and the first pore plate 220 is improved by supporting the noise elimination baffle 241 in the back plate 210 and the first pore plate 220, the noise elimination cavities 240 with different sizes can be better obtained, and the noise reduction effect is improved.

Alternatively, the sound damping baffle 241 is of unitary construction, integrally clamped within the first gap 230. With this alternative embodiment, the manufacturing is facilitated, and the structure of the sound-damping partition 241 is more stable, and is not easily deformed, enhancing the structural stability of the sound-damping chamber 240.

Optionally, the sound-damping baffle 241 is fixedly connected with the back plate 210 and the first orifice plate 220 by welding or bonding. With this alternative embodiment, independence between the sound-deadening chambers 240 can be maintained, preventing influence from each other, and the effect of noise reduction of the shadow line.

Alternatively, a portion of the sound damping baffle 241 is detachably mounted and configured to communicate two or more sound damping chambers 240 by detachment. With the alternative embodiment, two or more silencing cavities 240 can be communicated to obtain a silencing cavity 240 with larger volume, the size of the silencing cavity 240 can be adjusted, and the noise reduction effect on noise with different frequencies is better.

Optionally, a notch 242 is provided on a part of the noise elimination baffle 241, slots 243 are provided on the noise elimination baffle 241 at two ends of the notch 242, and a movable baffle 244 is provided in the slots 243. With this alternative embodiment, the two ends of the movable partition 244 are inserted into the slots 243 to close the notches 242 of the sound-damping partition 241, and when the movable partition 244 is removed, the notches are communicated with two or more sound-damping cavities 240, so that the size of the sound-damping cavities 240 is adjusted, and the noise reduction effect on noise with different frequencies is better.

Optionally, the method further comprises: a porous acoustic panel 250 is disposed within the acoustic chamber 240. With this alternative embodiment, noise entering the muffling chamber 240 is absorbed by the porous sound absorbing plate 250, enhancing the noise reduction effect.

Optionally, the porous acoustic panel 250 is sized to accommodate the size of the sound attenuating cavity 240 such that it does not slosh within the sound attenuating cavity 240. With this alternative embodiment, the porous sound absorbing panel 250 is just put into the sound deadening chamber 240 without shaking, preventing the generation of noise.

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 this alternative embodiment, noise enters the second gap 270 through the through hole 221 of the first orifice plate 220, resonates in the second gap 270, thereby consuming noise energy, achieving noise reduction effect, after the noise is reduced for the first time through the second gap 270, part of the noise enters the first gap 230 through the through hole 221 of the second orifice plate 260, resonates again, consuming noise energy, and part of the noise entering the first gap 230 can re-enter the second gap 270 after being reflected to reduce noise, thereby improving noise reduction effect by repeating noise reduction.

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

Alternatively, the perforations 221 of the first orifice plate 220 and the second orifice plate 260 have different apertures. With this alternative embodiment, different apertures can absorb noise of different frequencies, and different apertures are provided through the perforations 221 of the first orifice plate 220 and the second orifice plate 260, so that noise of different frequencies can be absorbed, and noise reduction effect on noise of different frequencies can be improved.

Alternatively, the first orifice plate 220 and the second orifice plate 260 have different thicknesses. With this alternative embodiment, the thicknesses of the first orifice plate 220 and the second orifice plate 260 are different, which corresponds to the different depths of the perforation 221, and the perforation 221 having different depths can absorb noise of different frequencies, so as to improve the noise reduction effect on noise of different frequencies.

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

Optionally, the relation between the noise reduction frequency and the penetration rate, the plate thickness, the aperture and the air layer depth is as follows:

wherein, the liquid crystal display device comprises a liquid crystal display device,

f _r is the noise reduction frequency; c is the speed of sound; p is the penetration rate; t is the plate thickness, i.e., the thickness of the first orifice plate 220, the second orifice plate 260; d is the pore diameter, i.e., the diameter of the perforations 221; l is the air layer depth, 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 the formula so that they absorb noise at different frequencies.

Fig. 17 shows another structure of the noise reduction plate provided by the embodiment of the present disclosure, fig. 18 shows an arrangement structure of the noise reduction channels provided by the embodiment of the present disclosure, and fig. 19 shows one side section of the noise reduction plate provided by the embodiment of the present disclosure.

In some embodiments, the noise reduction plate 200 includes: the main body 280 has a sound inlet 281, and a plurality of silencing channels 282 with different lengths are arranged in the main body, and the silencing channels 282 are communicated with the sound inlet 281.

By adopting the alternative embodiment, the sound wave interference is utilized, after the sound wave enters the silencing channel 282, the sound wave is reflected back to the silencing channel 282 by the other end of the silencing channel 282, the reflected sound wave with certain frequency and the sound wave with the same frequency in the cavity are mutually offset due to opposite phases, so that the purpose of silencing is achieved, 1/4 wavelength of noise and the wavelength with the same length as that of the silencing channel 282 are offset, noise with different frequencies can be absorbed and reduced through the silencing channels 282 with different lengths, and the noise reduction effect of the noise with a wider frequency range is effectively improved.

Optionally, the body 280 includes a sound attenuation passageway 282 therein around the inner circumference of the body. With this alternative embodiment, the length of the sound deadening passageway 282 can be increased sufficiently to reduce noise of a larger wavelength.

Optionally, the method further comprises: the back plate 210 covers the sound inlet 281 of the main body 280, and is configured to close one side of the sound inlet 281. With this alternative embodiment, one side of the sound inlet 281 is closed, and the sound wave of the noise is reflected, so that the sound wave more easily enters the sound attenuation channel 282, and the noise reduction effect is improved.

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, so that the back plate can better cover one side of the body 280, and has a better sound wave reflection effect, so that sound waves can enter the silencing channel 282 more easily, and further the noise reduction effect is improved.

Optionally, a protruding portion is provided on a side of the back plate 210, and a screw hole is provided on the protruding portion. With this alternative embodiment, the connection of the back plate 210 to its mounting location is facilitated.

Optionally, the back plate 210 is made of a high density material. Such as stainless steel plates, ceramic plates. With this alternative embodiment, the reflection effect of the back plate 210 on the sound wave is improved, and thus the noise reduction effect is improved.

Optionally, the body 280 includes: a first panel 283; a second panel 284; parallel to the first panel 283 with a gap 285 therebetween; a channel baffle 286; disposed within the 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 the sound attenuation passageway 282. With this alternative embodiment, the stability of the first and

second panels

283, 284 is enhanced by the use of a channel baffle 286 supported between the first and

second panels

283, 284.

Optionally, the channel separator 286 is a unitary structure that is integrally clamped within the gap 285 between the second panel 284 and the first panel 283. With this alternative embodiment, the manufacturing is facilitated, and the structure of the passage partition 286 is more stable, making the passage partition 286 less deformable, and maintaining the stability of the structure of the muffler passage 282.

Optionally, the channel separator 286 is fixedly connected to the first panel 283 and the second panel 284 by welding or bonding. With this alternative embodiment, the connection between the channel separator 286 and the first panel 283 and the second panel 284 is more stable, so that the sound attenuation channels 282 separated by the channel separator 286 are sealed and independent from each other, and the sound wave leakage of the adjacent sound attenuation channels 282 is not caused, thereby affecting 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 the sound wave of noise enters the sound deadening channel 282 more easily by reflection after entering from the sound inlet 281, thereby improving the noise reduction effect.

Optionally, the silencing channel 282 has one end communicating with the sound inlet 281 and the other end closed. With this alternative embodiment, the other end of the silencing channel 282 is closed, so that the sound wave of noise can be reflected, and the reflected sound wave of noise and the newly entered sound wave of noise interfere with each other to cancel each other, thereby improving the noise reduction effect.

Alternatively, both ends of the sound deadening passageway 282 communicate with the sound inlet 281. With this alternative embodiment, both ends of the sound deadening passageway 282 simultaneously enter the sound waves of the noise, and the sound waves of the same frequency meet in the sound deadening passageway 282, interfere with each other to cancel each other out, and enhance the noise reduction effect.

Optionally, both ends of the silencing channel 282 are communicated with the sound inlet 281, and a sealing piece is arranged inside the silencing channel 282 to divide the silencing channel 282 into two parts with different sizes. With this alternative embodiment, the muffler channels 282 of different lengths are obtained, so that noises of different frequencies can be reduced, and the noise reduction effect can be improved.

Alternatively, the body 280 has a rectangular structure, and the muffler channel 282 is parallel to the sides of the rectangular structure of the body 280. With this alternative embodiment, more sound attenuation passages 282 of different lengths can be accommodated in the body 280, improving the noise reduction.

Alternatively, the partial muffler channel 282 is provided in a straight line structure, and the partial muffler channel 282 is provided to have one or more right angle turns. With this alternative embodiment, the length of the silencing channel 282 is increased by right angle turning, and multiple silencing channels 282 with different lengths can be provided in the limited space of the body 280 without affecting the density of the silencing channels 282 inside the body 280, so as to improve the noise reduction effect on noise with a wider frequency range.

The embodiment of the disclosure provides a refrigerator.

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

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

By adopting the alternative embodiment, the noise in the refrigerator is reduced by the noise reduction plate 200, so that 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 compartment 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 is easier to enter into the noise reduction channel 282 through the sound inlet 281, and the noise reduction effect is improved.

Optionally, the refrigerator further includes: the compressor noise reduction plate 400 is disposed outside the compressor compartment 301 or inside the compressor compartment 301. With this alternative embodiment, the noise reduction effect on the portion of the compressor compartment 301 is enhanced by the compressor noise reduction plate 400, thereby improving the noise reduction effect of the entire refrigerator.

Optionally, a compressor noise reduction plate 400 covers the outer side wall of the compressor compartment 301. With this alternative embodiment, the compressor noise reduction plate 400 is conveniently installed and is in direct contact with the compressor compartment 301, better absorbing and reducing noise.

Optionally, the compressor noise reduction plate 400 covers the inside wall of the compressor compartment 301. With this alternative embodiment, the compressor noise reduction plate 400 is made closer to the noise source, increasing the noise reduction effect.

Optionally, the compressor noise reduction plate 400 is overlaid on the inside 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 main body 300 and the embedded noise reducer of any of the above embodiments, the main body 300 is placed in the accommodating chamber 101 of the embedded noise reducer.

By adopting the alternative embodiment, the embedded noise reduction device is wrapped on the outer side of the refrigerator, so that the overall noise reduction effect of the refrigerator is improved, and better experience is provided for users.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only 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 encompasses 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 one … …" does not exclude the presence of other like elements in a device comprising such elements. Various embodiments are described herein in a progressive manner, each embodiment focusing on differences from other embodiments, and identical and similar parts between the various embodiments are sufficient to be seen with each other.

The terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein refer to an orientation or positional relationship based on that shown in the drawings, merely for ease of description herein and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus are not to be construed as limiting the present application. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanically or electrically coupled, may be in communication with each other within two elements, may be directly coupled, or may be indirectly coupled through an intermediary, as would be apparent to one of ordinary skill in the art. The scope of the embodiments of the present disclosure encompasses the full ambit of the claims, as well as all available equivalents of the claims.

Claims

1. A refrigerator, comprising: the noise reduction device comprises a main body, a noise reduction plate and a compressor noise reduction plate, wherein the noise reduction plate is arranged below the inside of the main body, the main body comprises a compressor bin and is arranged above a sound inlet of the noise reduction plate, and the compressor noise reduction plate is arranged outside the compressor bin or in the compressor bin;

the noise reduction plate includes: the body is provided with a sound inlet, and a plurality of silencing channels with different lengths are arranged in the body and are communicated with the sound inlet;

the compressor noise reduction plate includes: the device comprises a back plate, a first pore plate and a silencing baffle, wherein the first pore plate is provided with a plurality of through holes for noise to pass through, covers the back plate, is provided with a first gap with the back plate, is provided with silencing cavities with different sizes, the silencing baffle is configured to separate the first gap to obtain the silencing cavities with different sizes, the silencing baffle is detachably arranged, two or more silencing cavities can be communicated through detachment, a part of the silencing baffle is provided with a notch, the silencing baffles at two ends of the notch are provided with slots, and movable baffles are arranged in the slots;

or the compressor noise reduction plate comprises: the noise-free air conditioner comprises a back plate, a first pore plate and a second pore plate, wherein the first pore plate is provided with a plurality of through holes for noise to pass through, a first gap is reserved between the back plate and the back plate, the second pore plate is provided with a plurality of through holes for noise to pass through, and a second gap is reserved between the first pore plate and the first pore plate.

2. The refrigerator of claim 1, wherein the noise reduction plate further comprises:

the backboard covers one side of the sound inlet of the body and is configured to seal one side of the sound inlet.

3. The refrigerator of claim 1, wherein the body comprises:

a first panel;

a second panel parallel to the first panel and having a gap with the first panel;

and a channel separator disposed in a gap between the second panel and the first panel and configured to separate the gap between the second panel and the first panel to obtain the sound deadening channel.

4. The refrigerator of claim 3, wherein one of the first panel and the second panel is provided with the sound inlet.

5. The refrigerator of claim 1, wherein the silencing channel has one end communicating with the sound inlet and the other end being closed.

6. The refrigerator of claim 1, wherein the body has a rectangular structure, and the sound deadening passage is parallel to a side of the rectangular structure of the body.

7. The refrigerator of any one of claims 1 to 6, wherein a part of the silencing channels are provided in a straight line structure and a part of the silencing channels are provided to have one or more right angle turns.