CN210667774U - Noise reduction plate and refrigerator - Google Patents

Abstract

The application relates to the technical field of household appliances, and discloses a noise reduction plate, which comprises: the body is of a three-layer plate structure and comprises two outer plates and a middle plate arranged between the two outer plates, wherein the middle plate and the two outer plates are parallel to each other and divide a gap between the two outer plates into double-layer gaps with different thicknesses; the middle plate and one of the outer plates have a plurality of perforations through which noise passes. In this application, the noise enters into double-deck clearance through the one side successive layer that has fenestrate outer plywood in, produce resonance in the one deck clearance in double-deck clearance, the energy of noise consumption, reach the effect of making an uproar of falling, and fall the back of making an uproar once, the partial noise enters into another layer clearance through the perforation on the intermediate lamella, produce resonance once more, the energy of noise consumption, the noise falls the remaining partial noise of back of making an uproar in a clearance and can enter into another clearance and continue to fall the noise, thereby improve the noise reduction effect through falling the noise of making an uproar repeatedly. 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. With the development of the technology, the noise of the refrigerator is reduced to the utmost, and further noise reduction is needed, so that the cost is greatly increased. Therefore, an additional sound-absorbing and noise-reducing device is required to reduce noise generated from the refrigerator.

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:

the noise reduction effect of the existing sound absorption and noise reduction device is not obvious.

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, which aim to solve the technical problem that the noise reduction effect of the existing sound absorption and noise reduction device is not obvious.

In some embodiments, the noise reduction plate comprises: the body is of a three-layer plate structure and comprises two outer plates and a middle plate arranged between the two outer plates, wherein the middle plate and the two outer plates are parallel to each other and divide a gap between the two outer plates into double-layer gaps with different thicknesses; the middle plate and one of the outer plates have a plurality of perforations through which noise passes.

In some embodiments, the refrigerator includes: the compressor bin and the noise reduction plate of any of the above embodiments, the noise reduction plate is disposed outside of the compressor bin, or, disposed within the compressor bin.

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

the noise enters into double-deck clearance through the one side successive layer that has fenestrate outer plywood in, produce resonance in the one deck clearance in double-deck clearance, the energy of noise is consumed, the effect of making an uproar falls in reaching, and fall the back of making an uproar once, partial noise enters into another layer clearance through the perforation on the intermediate lamella in, resonance once more produces, the energy of noise is consumed, the noise falls the remaining partial noise of back of making an uproar in a clearance and can enter into another clearance and continue to fall the noise, thereby improve the noise reduction effect through falling the noise of making an uproar repeatedly.

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 view of a noise reduction plate provided by an embodiment of the present disclosure;

FIG. 2 is a schematic side cross-sectional view of a noise reduction plate provided by embodiments of the present disclosure;

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

FIG. 4 is another schematic structural view of a noise reduction plate provided by embodiments of the present disclosure;

FIG. 5 is an enlarged view of portion A;

FIG. 6 is another schematic structural view of a noise reduction plate provided by embodiments of the present disclosure;

fig. 7 is a schematic structural diagram of a refrigerator provided in an embodiment of the present disclosure.

Reference numerals:

1. a noise reduction plate; 2. a compressor bin; 100. a body; 200. an outer plate; 201. a raised support arm; 202. A vertical protrusion; 300. a middle plate; 400. a double layer gap; 401. edge sealing plates; 500. perforating; 600. An anechoic chamber; 601. a sound-deadening partition plate; 602. a notch; 603. a slot; 604. a movable partition plate; 700. Porous sound absorbing panel.

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 a noise reduction plate.

Fig. 1 shows a structure of a noise reduction plate provided by an embodiment of the present disclosure, fig. 2 shows a structure of a side cross section of a noise reduction plate provided by an embodiment of the present disclosure, and fig. 3 shows a structure of another side cross section of a noise reduction plate provided by an embodiment of the present disclosure.

In some embodiments, a noise reduction plate comprises: the body 100 is of a three-layer plate structure and comprises two outer plates 200 and a middle plate 300 arranged between the two outer plates 200, wherein the middle plate 300 and the two outer plates 200 are parallel to each other and divide a gap between the two outer plates 200 into two-layer gaps 400 with different thicknesses; the middle plate 300 and one outer plate 200 have a plurality of through holes 500 through which noise passes.

By adopting the alternative embodiment, noise enters the double-layer gap 400 layer by layer through one side of the outer plate 200 with the through hole 500, resonance is generated in one layer of the double-layer gap 400, the energy of the noise is consumed, the noise reduction effect is achieved, after the noise reduction is carried out for one time, part of noise enters the other layer of the gap through the through hole 500 in the middle plate 300, resonance is generated again, the energy of the noise is consumed, the rest part of noise after the noise is reduced in one gap can enter the other gap to be reduced continuously, and the noise reduction effect is improved by repeatedly reducing the noise.

Optionally, the three-layer plate structure is a unitary structure. With this alternative embodiment, the three-layer panel structure is overall more stable.

Alternatively, the two outer plates 200 and the middle plate 300 in the three-plate structure are connected by welding. With this alternative embodiment, the three-layer panel structure is overall more stable.

Alternatively, the middle plate 300 having the through-holes 500 and the outer plate 200 are formed as a single body, and the other outer plate 200 is detachably covered on one side of the single body. By adopting the optional embodiment, the connection between the middle plate 300 with the through hole 500 and the outer plate 200 is more stable, the other outer plate can be detached, the cleaning in the gap is convenient, the noise reduction effect is prevented from being influenced by dust, the thickness of one gap in the double-layer gap 400 can be adjusted by replacing different outer plates, and the noise reduction effect of noise with different frequencies is improved.

Optionally, the middle plate 300 and one outer plate 200 are integrally formed, or the other outer plate 200 is provided with a protrusion support arm 201, and the protrusion support arm 201 is provided with a screw hole. With this alternative embodiment, it is convenient to use the raised arms 201 to secure the entire noise reduction plate in the desired position for use.

Optionally, the raised arm 201 includes two perpendicular surfaces, wherein an edge of one of the two perpendicular surfaces is connected to the integrated structure of the middle plate 300 and one of the outer plates 200 or an edge of the other outer plate 200, and a screw hole is formed in the other perpendicular surface. With this alternative embodiment, it is convenient to use the raised arms 201 to secure the entire noise reduction plate in the desired position for use.

Optionally, the middle plate 300 and the outer plate 200 are fixedly connected to the other outer plate 200 by screws. With this alternative embodiment, the integrated structure of the middle plate 300 and one outer plate 200 can be effectively and fixedly connected with the edge of the other outer plate 200 by screws, so that the connection is stable and the disassembly is convenient.

Optionally, a screw fixing hole is formed in the integrated structure formed by the middle plate 300 and the one outer plate 200, a screw fixing hole is also formed in the position of the other outer plate 200 corresponding to the screw fixing hole, and screws respectively pass through the two screw fixing holes, so that the integrated structure formed by the middle plate 300 and the one outer plate 200 can be fixedly connected with the other outer plate 200. With this alternative embodiment, the integrated structure of the middle plate 300 and one outer plate 200 is stably connected to the other outer plate 200 and is easily disassembled.

Optionally, the integrated structure of the middle plate 300 and one outer plate 200 is connected to the other outer plate 200 by a snap connection. With this alternative embodiment, the integrated structure of the middle plate 300 and one outer plate 200 is connected to the other outer plate 200 by a snap structure, which facilitates the detachable connection.

Optionally, the integrated structure formed by the middle plate 300 and one outer plate 200 is provided with a latch, and the other outer plate 200 is provided with a slot. With this alternative embodiment, the latch is inserted into the slot to connect the integrated structure of the middle plate 300 and one outer plate 200 to the other outer plate 200 for easy connection and detachment.

Alternatively, the middle plate 300 and the outer plate 200 having the perforation 500 have different perforation 500 rates. With this alternative embodiment, different perforation 500 rates can absorb different frequencies of noise, and by providing different perforation 500 rates for the middle plate 300 and one outer plate 200, different frequencies of noise can be absorbed, thereby improving the noise reduction effect for different frequencies of noise.

Alternatively, the perforations 500 of the middle plate 300 and the outer plate 200 having the perforations 500 have different pore sizes. With this alternative embodiment, different apertures can absorb different frequencies of noise, and different apertures are provided through the middle plate 300 and the through holes 500 of one outer plate 200 to absorb different frequencies of noise, thereby improving the noise reduction effect on different frequencies of noise.

Alternatively, the middle plate 300 and the outer plate 200 having the perforation 500 have different thicknesses. With this alternative embodiment, the thickness of the middle plate 300 and the outer plate 200 is different, which corresponds to the depth of the through holes 500, and the through holes 500 have different depths to absorb the noise with different frequencies, thereby improving the noise reduction effect for the noise with different frequencies.

Optionally, the noise reduction frequency is related to the perforation rate 500, the plate thickness, the hole diameter and the air layer depth as follows:

wherein,

f_ris the noise reduction frequency; c is the speed of sound; p is the perforation rate 500; t is the plate thickness, i.e. the thickness of the middle plate 300 and the outer plate 200 with the through holes 500; d is the pore size, i.e., the diameter of the perforation 500; l is the air layer depth, i.e., the thickness of each of the two-layer gaps 400. 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.

Optionally, the edges of the double layer gap 400 are all closed structures. By adopting the optional embodiment, the noise is prevented from leaking from the edge of the double-layer gap 400, so that the noise can be fully reduced in the double-layer gap 400, and the noise reduction effect is improved.

Optionally, the edge of one of the two outer laminates 200 has a vertical protrusion 202, such that one of the two outer laminates 200 assumes a channel-like configuration configured to close the edge of the double-layer gap 400. By adopting the optional embodiment, the edge of the double-layer gap 400 is sealed by the vertical protrusion 202, the structure is simple and easy to realize, noise can be fully reduced in the double-layer gap 400, and the noise reduction effect is improved.

Optionally, the edge of the double-layer gap 400 is provided with a sealing plate 401 configured to close the edge of the double-layer gap 400. Adopt this optional embodiment, utilize the edge sealing board 401 to seal the edge of double-deck clearance 400, simple structure realizes easily, makes the noise can carry out abundant the making an uproar of falling in double-deck clearance 400, improves the noise reduction effect.

Fig. 4 shows another structure of a noise reduction plate provided by the embodiment of the present disclosure, and fig. 5 shows an enlarged structure of a noise reduction partition plate provided by the embodiment of the present disclosure.

In some embodiments, different sized muffling chambers 600 are provided within one or both of the double-layered gaps 400. By adopting the optional embodiment, the noise enters the muffling cavity 600, resonance is generated in the muffling cavity 600, the energy of the noise is consumed, the noise reduction effect is achieved, the noises with different frequencies can be reduced through the muffling cavities 600 with different sizes, and the noise reduction effect is improved.

Alternatively, the silencing cavities 600 having different sizes are provided in the double-layered gap 400 between the middle plate 300 and the outer plate 200 having no through-holes 500. By adopting the optional embodiment, noise enters the silencing cavity 600 through the perforation 500, resonance is generated in the silencing cavity 600 which is closed at other positions except the position of the perforation 500, noise is reduced, and the noise reduction effect is improved.

Alternatively, the silencing chambers 600 with different sizes are not communicated with each other except for the through hole 500. By adopting the optional embodiment, each muffling cavity 600 forms a relatively independent space, so that the sound waves can resonate in the relatively independent muffling cavity 600, and the noise reduction effect is improved.

Optionally, the method further comprises: the silencing partition plate 601 is arranged in one or two of the double-layer gaps 400 and is configured to divide one or two of the double-layer gaps 400 into silencing cavities 600 with different sizes. By adopting the optional embodiment, the silencing partition plate 601 is supported in the double-layer gap 400, the stability of the double-layer gap 400 is improved, the silencing cavities 600 with different sizes can be obtained through a simple structure, and the noise reduction effect is improved.

Optionally, the sound damping baffle 601 is a unitary structure, integrally clamped within one or both of the double-layered gaps 400. By adopting the optional embodiment, the manufacturing is convenient, the silencing partition plate 601 is stable in structure and not easy to deform, and the structural stability of the silencing cavity 600 is enhanced.

Alternatively, the sound-deadening partition 601 is fixedly attached in the double-layer gap 400 by welding, bonding, or the like. By adopting the optional embodiment, the silencing partition plate 601 is stably connected in the double-layer gap 400, so that the independence between the silencing cavities 600 can be kept, the influence between the cavities can be prevented, and the noise reduction effect can be realized.

Optionally, a portion of the sound-damping partition 601 is detachably mounted and configured to connect two or more sound-damping chambers 600 by being detached. By adopting the optional embodiment, the silencing cavities 600 with larger volumes can be obtained by communicating two or more silencing cavities 600, the size of the silencing cavities 600 can be adjusted, and the noise reduction effect on noises with different frequencies is better.

Optionally, a notch 602 is formed in a part of the silencing partition plate 601, slots 603 are formed in the silencing partition plates 601 at two ends of the notch 602, and a movable partition plate 604 is arranged in the slot 603. By adopting the optional embodiment, the two ends of the movable clapboard 604 are inserted into the slots 603, so that the notches 602 of the silencing clapboard 601 are sealed, and the movable clapboard 604 is taken down, so that the notches are communicated with the two or more silencing cavities 600, the size of the silencing cavities 600 is adjusted, and the noise reduction effect on the noise with different frequencies is better.

Fig. 6 illustrates another configuration of a noise reduction plate provided by an embodiment of the present disclosure.

In some embodiments, further comprising: a perforated sound absorption panel 700 is disposed in one or both of the double-layered gaps 400. With this alternative embodiment, the noise resonates within the double-layered gap 400, thereby consuming the energy of the noise, and absorbing part of the noise by the porous sound-absorbing panel 700 while achieving the noise reduction effect, thereby improving the noise reduction effect.

Alternatively, the porous sound absorbing panel 700 is a panel-shaped structure of unitary construction made of sound absorbing material. By adopting the optional embodiment, the porous sound-absorbing panel 700 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.

The embodiment of the disclosure provides a refrigerator.

Fig. 7 illustrates one structure of a refrigerator provided by an embodiment of the present disclosure.

In some embodiments, a refrigerator includes: the compressor housing 2 and the noise reduction plate 1 of any of the above embodiments, the noise reduction plate 1 being disposed outside the compressor housing 2, or, alternatively, within the compressor housing 2.

Adopt this optional embodiment, utilize and fall board 1 of making an uproar to strengthen the noise reduction effect to 2 positions in compressor storehouse, and then promote the noise reduction effect of whole refrigerator.

Optionally, the noise reduction plate 1 covers the outer side wall of the compressor bin 2. By adopting the optional embodiment, the installation of the noise reduction plate 1 is convenient, and the noise reduction plate is directly contacted with the compressor bin 2, so that noise is better absorbed and reduced.

Optionally, the noise reduction plate 1 covers the inside wall of the compressor bin 2. By adopting the optional embodiment, the noise reduction plate is closer to a noise source, and the noise reduction effect is improved.

Optionally, the noise reduction plate 1 is covered on the inner side wall of the refrigerator shell near the compressor bin 2. With this alternative embodiment, the installation of the noise reduction plate 1 is facilitated.

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 (10)

1. A noise reduction panel, comprising:

the body is of a three-layer plate structure and comprises two outer plates and a middle plate arranged between the two outer plates, wherein the middle plate and the two outer plates are parallel to each other and divide a gap between the two outer plates into double-layer gaps with different thicknesses; the middle plate and one of the outer plates have a plurality of perforations through which noise passes.

2. The noise reduction panel according to claim 1, wherein the perforated middle and outer panels are of one piece construction, the other outer panel being removably attached to one side of the one piece construction.

3. The noise reduction panel according to claim 1, wherein the middle and outer panels having the perforations have different perforation rates.

4. The noise reduction panel according to claim 1, wherein the perforations of the middle and outer panels having said perforations have different pore sizes.

5. The noise reduction panel according to claim 1, wherein the middle and outer panels having the perforations have different thicknesses.

6. The noise attenuation panel of claim 1, wherein the edges of the double layer gap are closed structures.

7. A noise attenuation panel according to claim 1, wherein one or both of the double layer gaps is provided with an acoustic cavity of different size.

8. The noise reduction panel of claim 7, further comprising:

a sound-deadening partition plate disposed in one or both of the double-layer gaps, configured to partition one or both of the double-layer gaps into the sound-deadening chambers having the different sizes.

9. A noise attenuation panel according to any one of claims 1 to 8, further comprising:

a porous sound absorbing panel disposed within one or both of the double-layered gaps.

10. A refrigerator, characterized by comprising: a compressor bin and a noise reduction plate as defined in any of claims 1 to 9, said noise reduction plate being disposed outside of said compressor bin or, alternatively, within said compressor bin.

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