Air supply components and refrigeration equipment

Abstract

This invention proposes an air supply component and a cooling device. The air supply component includes: an air duct with an air inlet and an air outlet; a lampshade disposed on one side of the air duct and corresponding to the air inlet or the air outlet; a sound-absorbing port on the side of the lampshade facing the air duct, the sound-absorbing port and the air outlet being opposite each other; and a resonant cavity disposed inside the lampshade, one end of which is an open end and the other end is a closed end, the open end being connected to the sound-absorbing port.

Description

Technical Field

[0001] This invention relates to the field of noise reduction technology, and more specifically to an air supply assembly and a refrigeration device. Background Technology

[0002] Refrigerator compartments have air ducts to circulate air and achieve better cooling. However, this airflow generates noise. To address this, silencers are typically installed on the air ducts. These silencers are located around the air outlet or inlet to absorb noise and reduce transmission loss, thus reducing noise. However, this design limits the size of the air outlet, affecting the airflow path and cooling efficiency. Summary of the Invention

[0003] The present invention aims to at least solve or improve one of the technical problems in the prior art where the noise reduction structure on the central air supply component of refrigeration equipment such as refrigerators affects the airflow.

[0004] Therefore, a first aspect of the present invention provides an air supply assembly.

[0005] A second aspect of the present invention provides a refrigeration device.

[0006] In view of the above, according to a first aspect of the present invention, the present invention provides an air supply assembly, comprising: an air duct, wherein an air inlet and an air outlet are formed on the air duct; a lampshade, disposed on one side of the air duct and disposed corresponding to the air inlet or the air outlet, the side of the lampshade facing the air duct having a sound-absorbing port, the sound-absorbing port and the air outlet being opposite each other, and a resonant cavity being disposed inside the lampshade, one end of the resonant cavity being an open end and the other end being a closed end, the open end being connected to the sound-absorbing port.

[0007] The air supply component proposed in this invention includes an air duct and a lampshade. The air duct has an air inlet and an air outlet, and the lampshade is disposed on one side of the air duct, corresponding to the air inlet or air outlet. The lampshade includes a connected sound-absorbing port and a resonant cavity. One end of the resonant cavity is open, and the other end is closed. The sound-absorbing port faces the air inlet or air outlet. Therefore, airflow noise is transmitted through the air inlet or air outlet and then enters the resonant cavity through the sound-absorbing port, thus achieving noise reduction for the air supply component. Since the lampshade is not disposed within the air duct, it does not affect the size of the air inlet or air outlet, thereby ensuring airflow within the air duct and improving the refrigeration effect of the cooling equipment. Specifically, the noise reduction of the resonant cavity is achieved through two mechanisms: sound absorption and interference, which is equivalent to a reflection effect. The combined transmission loss constitutes the final noise reduction effect.

[0008] In addition, the lampshade itself can also reflect noise, further enhancing the noise reduction effect.

[0009] In addition, the air supply component in the above-described technical solution provided by the present invention may also have the following additional technical features:

[0010] Based on the above technical solution, it further includes: a fan, located in the air duct, and correspondingly installed at the air inlet or air outlet, as well as the lamp cover.

[0011] In this technical solution, the fan is installed in the air duct so that the airflow enters through the air inlet and exits through the air outlet. The fan is positioned at the air inlet or air outlet corresponding to the lampshade, so that the fan is close to the lampshade. As a result, the noise emitted by the fan is absorbed by the resonant cavity of the lampshade. Moreover, the lampshade can simultaneously play the role of sound absorption and sound wave reflection, thereby improving the noise reduction effect.

[0012] The surface of the lampshade can also reflect light, but this is different from the reflection mechanism of the resonant cavity.

[0013] Based on any of the above technical solutions, the air duct further includes: a main body, on which an air inlet and an air outlet are disposed; and a connecting part disposed on the main body, which is connected to the lampshade to form a gap between the main body and the lampshade.

[0014] In this technical solution, the air duct includes a main body and a connecting part. The air inlet and air outlet are set on the main body, and the main body has a cavity inside that connects the air outlet and the air inlet. The fan is installed on the main body. When the fan is running, air is drawn in through the air inlet and exhausted through the air outlet, forming a circulation of airflow.

[0015] Furthermore, the main body is connected to the lampshade via a connecting part. The lampshade is mounted at a certain distance from the main body via the connecting part, thus creating a gap between the lampshade and the main body. When the lampshade is placed at the air outlet, the airflow from the air outlet flows outward through the gap. When the lampshade is placed at the air inlet, the airflow flows into the air duct through the gap. This ensures both the lampshade's absorption of noise and the airflow of the air supply component.

[0016] Based on any of the above technical solutions, the air duct further includes: a grille, which is connected to the main body and located at the air inlet or air outlet, with the connecting part located on the grille.

[0017] In this technical solution, the air duct also includes a grille, both of which are connected to the main body. The grille is set at the air inlet or air outlet, and the connecting part is set on the grille, which facilitates the installation of the lampshade, thereby improving the installation accuracy of the air outlet and the lampshade and improving the noise reduction effect.

[0018] Based on any of the above technical solutions, the lampshade has an air guiding surface on the side facing the air duct.

[0019] In this technical solution, the side of the lampshade facing the air duct forms an air guide surface. When the lampshade corresponds to the air outlet, the airflow discharged from the air outlet can be guided by the air guide surface. When the lampshade corresponds to the air inlet, the airflow can flow into the air duct through the air guide surface, improving the airflow effect and increasing the airflow volume. The sound-absorbing port is located on the air guide surface.

[0020] Based on any of the above technical solutions, the area of ​​the air guide surface is further greater than the area of ​​the air inlet or air outlet.

[0021] In this technical solution, when the lampshade corresponds to the air outlet, the area of ​​the air outlet is smaller than the area of ​​the air guiding surface. Thus, the lampshade can block the air outlet, so that all the noise transmitted from the air outlet acts on the lampshade. Similarly, when the lampshade corresponds to the air inlet, the area of ​​the air inlet is smaller than the area of ​​the air guiding surface. Thus, the lampshade can block the air inlet, so that all the noise transmitted from the air inlet acts on the lampshade. This allows the lampshade to fully absorb the noise transmitted from the air inlet or air outlet, further improving the noise reduction effect of the lampshade.

[0022] Based on any of the above technical solutions, the lampshade further includes: at least one noise reduction disk, a resonant cavity is provided on the noise reduction disk, and a sound absorption port is provided on the side of the noise reduction disk facing the air duct.

[0023] In this technical solution, the lampshade includes at least one noise reduction plate, the resonant cavity is set on the noise reduction plate, and the noise reduction plate has a sound absorption port on the side facing the air duct. The disc-shaped structure of the noise reduction plate can reduce the thickness and volume of the lampshade, so that after the air supply component is installed in the refrigeration equipment, it is easier to save space in the refrigeration equipment, so that more items can be placed inside the refrigeration equipment.

[0024] Based on any of the above technical solutions, the noise reduction disk further includes multiple noise reduction units, and each noise reduction unit has at least one resonant cavity and at least one sound absorption port.

[0025] In this technical solution, the noise reduction disk has multiple noise reduction units, and each noise reduction unit has at least one resonant cavity and at least one sound absorption port. The multiple noise reduction units are used to increase the noise reduction efficiency. That is, each noise reduction unit can absorb noise from different locations, thereby achieving all-round noise reduction and improving the overall noise reduction effect of the air supply component.

[0026] Based on any of the above technical solutions, the perimeter of the air outlet or air inlet corresponding to the lampshade is A, the distance between the lampshade and its corresponding air outlet or air inlet is B, the number of noise reduction units on the noise reduction disk is N, the cross-sectional area of ​​the resonant cavity is C, and C÷(A×B÷N)≥1.5%.

[0027] In this technical solution, by setting the relationship between the cross-sectional area of ​​the resonant cavity and the air outlet or air inlet corresponding to the lampshade, the absorption rate of noise of a specific frequency emitted by the air supply component is improved, thereby improving the effective noise reduction of the sound waves transmitted from the air outlet or air inlet.

[0028] Based on any of the above technical solutions, the noise reduction unit further includes multiple resonant cavities and a sound-absorbing port. The multiple resonant cavities have different resonant frequencies, and the openings of the multiple resonant cavities are all connected to the sound-absorbing port.

[0029] In this technical solution, a noise reduction unit has multiple resonant cavities with different resonant frequencies. Furthermore, all the resonant cavities are connected to the sound absorption port. As a result, the noise generated by the airflow and the fan will enter the multiple resonant cavities. Since the resonant frequencies of the multiple resonant cavities are different, the noise reduction frequency band of the lampshade can be increased, thereby improving the noise reduction effect of the lampshade.

[0030] Based on any of the above technical solutions, further, when there are multiple noise reduction disks, the multiple noise reduction disks are stacked in the direction from the direction closest to the air duct to the direction furthest from the air duct; wherein, the sound absorption ports of the multiple noise reduction disks are connected.

[0031] In this technical solution, when there are multiple noise reduction disks, the multiple noise reduction disks are stacked sequentially from the direction closest to the air duct to the direction furthest from the air duct. Furthermore, the sound absorption ports of the multiple noise reduction disks are connected, so that all noise reduction disks can absorb noise through the sound absorption ports. Moreover, the use of multiple noise reduction disks can improve the noise reduction effect.

[0032] Based on any of the above technical solutions, furthermore, the resonant frequencies of the resonant cavities on different noise reduction disks are different.

[0033] In this technical solution, the resonant frequencies of the resonant cavities on different noise reduction disks are different. Therefore, the noise reduction frequency band of the lampshade can be further increased, thereby further improving the noise reduction effect of the lampshade.

[0034] Based on any of the above technical solutions, the resonant cavity further includes a plurality of alternating first channels and a plurality of second channels, wherein the first channels extend radially along the noise reduction disk and the second channels extend circumferentially along the noise reduction disk.

[0035] In this technical solution, the resonant cavity includes multiple first channels and multiple second channels. The first channels extend radially along the noise reduction disk, and the second channels extend circumferentially along the noise reduction disk. The first channels and the second channels are alternately connected to form a resonant cavity. By alternately connecting the first channels and the second channels, the resonant cavity is brought together, reducing the length of the resonant cavity and making the resonant cavity more suitable for the circular structure of the noise reduction disk.

[0036] Based on any of the above technical solutions, the resonant cavity is further defined as a quarter-wavelength tube.

[0037] In this technical solution, the resonant cavity uses a quarter-wavelength tube, which has good sound absorption, thereby improving the noise reduction effect of the lampshade.

[0038] According to a second aspect of the present invention, a refrigeration device is provided, comprising: an air supply component as described in any of the above-described technical solutions.

[0039] The refrigeration equipment proposed in this invention includes an air supply component as described in any of the above technical solutions, and therefore has all the beneficial effects of the air supply component as described in any of the above technical solutions, which will not be described in detail here.

[0040] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0041] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0042] Figure 1 This diagram shows a partial structural schematic of an air supply assembly provided in one embodiment of the present invention;

[0043] Figure 2 This diagram shows a partial structural schematic of an air supply assembly provided in one embodiment of the present invention;

[0044] Figure 3 This diagram shows a partial structural schematic of an air supply assembly provided in one embodiment of the present invention;

[0045] Figure 4 This diagram illustrates the structure of a noise reduction structure in an air supply assembly according to an embodiment of the present invention.

[0046] Figure 5 This diagram illustrates the structure of a noise reduction disk in an air supply assembly according to an embodiment of the present invention.

[0047] Figure 6 This diagram illustrates the structure of a noise reduction disk in an air supply assembly according to an embodiment of the present invention.

[0048] Figure 7 This diagram illustrates the structure of the resonant cavity in an air supply assembly according to an embodiment of the present invention.

[0049] Figure 8 This diagram illustrates the structure of the resonant cavity in an air supply assembly according to an embodiment of the present invention.

[0050] Figure 9 This diagram illustrates the structure of a noise reduction structure in an air supply assembly according to an embodiment of the present invention.

[0051] in, Figures 1 to 9 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0052] 100 Air supply assembly, 110 Air duct, 112 Air inlet, 114 Air outlet, 116 Main body, 118 Connecting part, 120 Grille, 122 Base plate, 124 Cover plate, 126 Buckle, 130 Fan, 140 Lamp cover, 142 Noise reduction plate, 144 Noise reduction unit, 146 Resonance cavity, 148 Open end, 150 Closed end, 152 First channel, 154 Second channel, 156 Sound absorption port, 158 Mounting part, 160 Air guide surface, 162 First noise reduction unit, 164 Second noise reduction unit, 166 Third noise reduction unit, 168 First resonance cavity, 170 Second resonance cavity, 172 Third resonance cavity, 174 Fourth resonance cavity, 180 Inner liner. Detailed Implementation

[0053] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0054] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0055] The following reference Figures 1 to 9 This describes an air supply assembly 100 and a refrigeration device provided according to some embodiments of the present invention.

[0056] like Figures 1 to 3 As shown, according to a first aspect of the present invention, the present invention provides an air supply assembly 100, which can be applied to a refrigeration device and can be installed in the cold storage compartment of the refrigeration device, wherein the air duct 110 is connected to the inner liner 180 of the refrigeration device.

[0057] The air supply assembly 100 includes an air duct 110 and a lampshade 140. The air duct 110 has an air inlet 112 and an air outlet 114. For example... Figure 4 As shown, the lampshade 140 has a mounting portion 158 on the side opposite to the air duct 110, which is used to mount the lamp.

[0058] The lampshade 140 is disposed on one side of the air duct 110, and the lampshade 140 is opposite to the air inlet 112 or the air outlet 114. When the lampshade 140 is opposite to the air inlet 112, the lampshade 140 and the air inlet 112 are spaced apart; when the lampshade 140 is opposite to the air outlet 114, the lampshade 140 and the air outlet 114 are spaced apart. That is, the lampshade 140 is spaced apart from the side of the air duct 110 where the air inlet 112 or the air outlet 114 is located.

[0059] Furthermore, since the lampshade 140 is not located around or inside the air inlet 112 or the air outlet 114, the lampshade 140 will not affect the area of ​​the air outlet 114.

[0060] The lampshade 140 has a sound-absorbing port 156 and a resonant cavity 146 connected to the sound-absorbing port 156. The sound-absorbing port 156 is directly opposite the air inlet 112 or the air outlet 114. Therefore, the airflow noise in the air duct 110 is transmitted through the air inlet 112 or the air outlet 114 and enters the resonant cavity 146 through the sound-absorbing port 156. The resonant cavity 146 absorbs the noise and achieves the effect of noise reduction.

[0061] The air supply assembly 100 proposed in this invention includes an air duct 110 and a lampshade 140. The air duct 110 has an air inlet 112 and an air outlet 114. The lampshade 140 is disposed on one side of the air duct 110, corresponding to the air inlet 112 or the air outlet 114. The lampshade 140 includes a connected sound-absorbing port 156 and a resonant cavity 146. One end of the resonant cavity 146 is an open end, and the other end is a closed end. The sound-absorbing port faces the air inlet or the air outlet. Thus, the noise of the airflow will be transmitted through the air inlet or the air outlet and then enter the resonant cavity through the sound-absorbing port, thereby achieving the effect of noise reduction for the air supply assembly. Since the lampshade is not disposed in the air duct, it will not affect the size of the air inlet or the air outlet, thereby ensuring the airflow of the air duct and improving the refrigeration effect of the refrigeration equipment.

[0062] In addition, the lampshade itself can also reflect noise, further improving the noise reduction effect. That is, the lampshade 140 can simultaneously play the role of sound absorption and sound wave reflection.

[0063] The lampshade 140 integrates noise reduction function. After the air supply component 100 is installed in the refrigeration equipment, it further saves space in the refrigeration equipment, allowing the refrigeration equipment to have more space to store items.

[0064] The air supply component 100 provided by the present invention reduces noise along the sound propagation path to reduce airflow noise without increasing wind resistance, while taking into account both noise reduction effect and airflow rate of the air supply component 100.

[0065] As a possible embodiment of the present invention, the air supply assembly 100 further includes a fan 130 disposed on the air duct 110, and the fan 130 and the lamp cover 140 are respectively disposed at the air inlet 112 or the air outlet 114.

[0066] In this embodiment, the fan 130 is disposed in the air duct 110 so that airflow enters through the air inlet 112 and exits through the air outlet 114. The fan 130 is disposed at the air inlet 112 or the air outlet 114 corresponding to the lampshade 140, so that the fan 130 is close to the lampshade 140. As a result, the noise emitted by the fan 130 will be absorbed by the resonant cavity of the lampshade 140. Moreover, the lampshade 140 can simultaneously play the role of sound absorption and sound wave reflection, thereby improving the noise reduction effect.

[0067] The fan 130 is installed on the air duct 110 and is located at the air inlet 112 or the air outlet 114. When the fan 130 is working, air can be drawn in through the air inlet 112 and exhausted through the air outlet 114.

[0068] Furthermore, the fan 130 is positioned at the air inlet 112 or the air outlet 114, so that the sound-absorbing port 156 of the lampshade 140 faces the fan 130. This allows the lampshade 140 to simultaneously reduce airflow noise and fan noise, thus improving the noise reduction effect. The noise of the air supply assembly 100 mainly comes from the airflow and the fan 130. Therefore, by positioning the lampshade 140 corresponding to the fan 130, it can simultaneously reduce both airflow noise and fan noise, thereby greatly improving the noise reduction effect.

[0069] The air supply component 100 provided by the present invention reduces noise along the sound propagation path for the fan 130 and airflow without increasing wind resistance, while taking into account both the noise reduction effect and the airflow of the air supply component 100.

[0070] like Figures 1 to 3 As shown, in one possible embodiment of the present invention, the air duct 110 includes a main body 116 and a connecting portion 118 disposed on the main body 116. The main body 116 is provided with an air inlet 112 and an air outlet 114. The lampshade 140 is mounted on the connecting portion 118. Specifically, the connection between the connecting portion 118 and the lampshade 140 can be plugged in, snapped in, or screwed in. Furthermore, the connecting portion 118 allows the lampshade 140 to be moved away from the main body 116, that is, a gap is formed between the lampshade 140 and the main body 116, thereby facilitating the outflow of airflow.

[0071] In this embodiment, the air duct 110 includes a main body 116 and a connecting part 118. An air inlet 112 and an air outlet 114 are disposed on the main body 116, and the main body 116 has a cavity inside, which connects the air outlet 114 and the air inlet 112. A fan 130 is installed on the main body 116. When the fan 130 is running, air is drawn in through the air inlet 112 and exhausted through the air outlet 114, forming a circulation of airflow.

[0072] Furthermore, the main body 116 is connected to the lampshade 140 via the connecting part 118. The lampshade 140 is mounted at a certain distance from the main body 116 via the connecting part 118, thereby forming a gap between the lampshade 140 and the main body 116. When the lampshade 140 corresponds to the air outlet 114, the airflow from the air outlet 114 flows outward through the gap. When the lampshade 140 corresponds to the air inlet 112, the airflow flows into the air duct 110 through the gap. This ensures both the absorption of noise by the lampshade 140 and the airflow of the air supply assembly 100.

[0073] Furthermore, when the lampshade 140 is installed at the air outlet 114, after the air supply assembly 100 is installed in the refrigeration equipment, the airflow discharged from the air outlet 114 can be dispersed into the cavity of the refrigeration equipment through the gap between the main body 116 and the lampshade 140, which can be the refrigerator compartment or the freezer compartment, thereby increasing the air supply effect of the air supply assembly 100 and making the temperature in the cavity of the refrigeration equipment more uniform.

[0074] Furthermore, such as Figure 1 As shown, the main body 116 includes a base plate 122 and a cover plate 124. The base plate 122 and the cover plate 124 are connected, forming a cavity between them. An air inlet 112 and an air outlet 114 are disposed on the cover plate 124. Furthermore, the base plate 122 can form an integral structure with the inner liner 180 of the refrigeration equipment. Wherein, as... Figure 1 and Figure 2 As shown, a buckle 126 can be provided on the cover plate 124, and the base plate 122 and the cover plate 124 are snapped together. Thus, the installation difficulty of the air supply assembly 100 is reduced and the production cost is reduced by the separate structure of the base plate 122 and the cover plate 124.

[0075] The connecting part 118 can be a protruding structure or a recessed structure.

[0076] The air supply assembly 100 includes a base plate 122, a cover plate 124, a fan 130, and a lampshade 140. The base plate 122 is connected to the inner liner 180, and the fan 130 can be mounted on a bracket.

[0077] like Figure 2 and Figure 3As shown, in one possible embodiment of the present invention, the air duct 110 further includes a grille 120 disposed on the main body 116. The grille 120 is disposed at the air inlet 112 or the air outlet 114, and a connecting portion 118 is disposed on the grille 120. The grille 120, by providing airflow, improves safety while ensuring adequate airflow, reducing the possibility of foreign objects contacting the fan 130 and affecting its operation. Furthermore, the connecting portion 118 on the grille 120 facilitates the installation of the lampshade 140, improving the installation accuracy of the air outlet 114 and the lampshade 140, and enhancing noise reduction.

[0078] Specifically, the air outlet 114 has a circular structure, the grille 120 extends radially along the air outlet 114, and the connecting part 118 is located at the center of the air outlet 114.

[0079] like Figure 3 As shown, in one possible embodiment of the present invention, the lampshade 140 forms an air guide surface 160 on the side facing the air duct 110. Specifically, the lampshade 140 forms a conical surface on the side facing the air duct 110. Therefore, when the lampshade 140 is positioned corresponding to the air outlet 114, the airflow discharged from the air duct 110 can be obliquely guided out through the air guide surface 160, thereby increasing the radiation range and flow speed of the airflow, resulting in a more uniform temperature within the refrigeration equipment chamber. When the lampshade 140 is positioned corresponding to the air inlet 112, the airflow enters the air inlet 112 through the periphery of the lampshade 140, improving the airflow circulation effect.

[0080] In this embodiment, the lampshade 140 forms an air guide surface 160 on the side facing the air duct 110. When the lampshade 140 corresponds to the air outlet 114, the airflow discharged from the air outlet 114 can be guided by the air guide surface 160. When the lampshade 140 corresponds to the air inlet 112, the airflow can flow into the air duct through the air guide surface 160, reducing wind resistance, improving the airflow effect, and increasing the airflow volume. The sound-absorbing port 156 is located on the air guide surface 160.

[0081] Furthermore, the orthogonal projection of the sound-absorbing port 156 onto the air duct 110 falls within the range of the air inlet 112 or the air outlet 114, allowing the resonant cavity 146 to better absorb noise.

[0082] As a possible embodiment of the present invention, the area of ​​the air guide surface 160 is larger than the area of ​​the air inlet 112 or the air outlet 114.

[0083] In this embodiment, when the lampshade 140 corresponds to the air outlet 114, the area of ​​the air outlet 114 is smaller than the area of ​​the air guide surface 160. Therefore, the lampshade 140 can block the air outlet 114, so that all the noise transmitted from the air outlet 114 acts on the lampshade 140. Similarly, when the lampshade 140 corresponds to the air inlet 112, the area of ​​the air inlet 112 is smaller than the area of ​​the air guide surface 160. Therefore, the lampshade 140 can block the air inlet 112, so that all the noise transmitted from the air inlet 112 acts on the lampshade 140. This allows the lampshade 140 to fully absorb the noise transmitted from the air inlet 112 or the air outlet 114, further improving the noise reduction effect of the lampshade 140.

[0084] like Figure 5 and Figure 6 As shown, in one possible embodiment of the present invention, the lampshade 140 includes one or more noise reduction disks 142, each noise reduction disk 142 is provided with a resonant cavity 146, and the sound absorption port 156 is provided on the side of the noise reduction disk 142 facing the air outlet 114.

[0085] In this embodiment, the lampshade 140 includes at least one noise reduction disk 142, and a resonant cavity 146 is disposed on the noise reduction disk 142. A sound absorption port 156 is provided on the side of the noise reduction disk 142 facing the air duct 110. The disk-shaped structure of the noise reduction disk 142 can reduce the thickness and volume of the lampshade 140, thereby making it easier to save space in the refrigeration equipment after the air supply assembly 100 is installed, so that more items can be placed inside the refrigeration equipment.

[0086] like Figure 5 and Figure 6 As shown, in one possible embodiment of the present invention, a noise reduction disk 142 is provided with a plurality of noise reduction units 144, each noise reduction unit 144 having at least one resonant cavity 146 and at least one sound absorption port 156.

[0087] In this embodiment, the noise reduction disk 142 has a plurality of noise reduction units 144, and each noise reduction unit 144 has at least one resonant cavity 146 and at least one sound absorption port 156. The noise reduction efficiency is increased by using a plurality of noise reduction units 144. That is, each noise reduction unit 144 can absorb noise from different locations, thereby achieving all-round noise reduction and improving the overall noise reduction effect of the air supply assembly 100.

[0088] Specifically, the number of noise reduction units 144 on a noise reduction disk 142 can be two, three, four, five, six, or seven, etc. Multiple noise reduction units 144 can be assembled into a noise reduction disk 142, and the number of resonant cavities 146 on a noise reduction unit 144 can be one, two, three, four, five, six, or seven, etc. Furthermore, the number of sound absorption ports 156 on a noise reduction unit 144 can be one, two, three, four, five, six, or seven, etc.

[0089] Among them, such as Figure 5 and Figure 6 As shown, the noise reduction disk 142 has a circular structure, and there are three noise reduction units 144 on one noise reduction disk 142. That is, the noise reduction unit 144 includes a first noise reduction unit 162, a second noise reduction unit 164 and a third noise reduction unit 166. The first noise reduction unit 162, the second noise reduction unit 164 and the third noise reduction unit 166 each occupy 120 degrees of the circumference. Each noise reduction disk 142 has a sound absorption port 156. The structure of the noise reduction unit 144 on the same noise reduction disk 142 is the same, and the structure of the noise reduction unit 144 on different noise reduction disks 142 is different.

[0090] As a possible embodiment of the present invention, the perimeter of the air outlet 114 or air inlet 112 corresponding to the lampshade 140 is A, the distance between the lampshade 140 and its corresponding air outlet 114 or air inlet 112 is B, the number of noise reduction units 144 on the noise reduction disk 142 is N, the cross-sectional area of ​​the resonant cavity 146 is C, and C÷(A×B÷N)>1.5%.

[0091] In this technical solution, by setting the relationship between the cross-sectional area of ​​the resonant cavity 146 and the air outlet 114 or air inlet 112 corresponding to the lampshade 140, the absorption rate of noise of a specific frequency emitted by the air supply assembly 100 is improved, thereby enhancing the effective noise reduction of sound waves transmitted from the air outlet 114 or air inlet 112. The cross-section of the resonant cavity 146 is a section perpendicular to the direction in which the resonant cavity 146 extends from the open end 148 to the closed end 150.

[0092] Furthermore, in order to improve the noise reduction effect, the area of ​​the cross-section of the resonant cavity 146 and the perimeter of the air outlet 114 must meet a certain proportional relationship.

[0093] Specifically, the air inlet 112 or air outlet 114 has a circular structure, the circumference of the air inlet 112 or air outlet 114 is A, the gap distance between the air guide surface 160 of the lampshade 140 and the main body 116 is B, A×B is equal to the ventilation area from the air inlet 112 or air outlet 114 to the lampshade 140, the lampshade 140 has N noise reduction units 144, each noise reduction unit 144 corresponds to 1 / N ventilation area, A×B÷N is equal to the ventilation area corresponding to each noise reduction unit 144, and the cross-sectional area C of the resonant cavity 146 is greater than or equal to 1.5%×(A×B÷N). For example, the cross-sectional area C of resonant cavity 146 is equal to 1.5% × (A × B ÷ N), the cross-sectional area of ​​resonant cavity 146 is equal to 2% × A × B ÷ N, the cross-sectional area C of resonant cavity 146 is equal to 3% × A × B ÷ N, the cross-sectional area C of resonant cavity 146 is equal to 5% × A × B ÷ N, the cross-sectional area C of resonant cavity 146 is equal to 10% × A × B ÷ N, and so on. These will not be listed one by one here.

[0094] For example, the lampshade 140 has 3 noise reduction units 144, each noise reduction unit 144 corresponds to 1 / 3 of the air outlet volume, A×B÷3 equals the air outlet volume corresponding to each noise reduction unit 144, and the cross-sectional area of ​​the resonant cavity 146 is greater than or equal to 1.5%×(A×B÷3).

[0095] like Figure 5 , Figure 6 and Figure 9 As shown, in one possible embodiment of the present invention, a noise reduction unit 144 is provided with multiple resonant cavities 146, and the multiple resonant cavities 146 have different resonant frequencies, so that corresponding noise reduction processing can be performed for noise of different frequencies. In addition, a noise reduction unit 144 has a sound absorption port 156, and the opening ends 148 of all the resonant cavities 146 of the same noise reduction unit 144 are connected to this sound absorption port 156, thereby reducing the total number of sound absorption ports 156 and reducing the influence of the sound port on the airflow.

[0096] In this embodiment, a noise reduction unit 144 has multiple resonant cavities 146 with different resonant frequencies. Furthermore, all multiple resonant cavities 146 are connected to the sound absorption port 156. Consequently, the noise generated by the airflow and the fan 130 will enter the multiple resonant cavities 146. Since the multiple resonant cavities 146 have different resonant frequencies, the noise reduction frequency band of the lampshade 140 can be increased, thereby improving the noise reduction effect of the lampshade 140.

[0097] Furthermore, each noise reduction unit 144 has only one sound absorption port 156, which fully controls the total number of sound absorption ports 156 on the lampshade 140, thereby reducing the airflow entering the lampshade 140 and increasing the airflow rate.

[0098] Specifically, a noise reduction unit 144 has four resonant cavities 146, namely, the resonant cavities 146 include a first resonant cavity 168, a second resonant cavity 170, a third resonant cavity 172 and a fourth resonant cavity 174. The sound absorption port 156 is located in the middle of the outer periphery of the noise reduction unit 144. The two sides of the sound absorption port 156 are connected to the opening ends 148 of two resonant cavities 146. One side of the sound absorption port 156 is connected to the opening ends 148 of the first resonant cavity 168 and the second resonant cavity 170, and the other side is connected to the opening ends 148 of the third resonant cavity 172 and the fourth resonant cavity 174.

[0099] like Figure 9 As shown, in one possible embodiment of the present invention, when the lampshade 140 includes a plurality of noise reduction discs 142, the plurality of noise reduction discs 142 are stacked together. Specifically, the plurality of noise reduction discs 142 are stacked sequentially in the direction of airflow from the air outlet 114, and the sound absorption ports 156 on the plurality of noise reduction discs 142 are all connected.

[0100] In this embodiment, when there are multiple noise reduction disks 142, the multiple noise reduction disks 142 are stacked sequentially from the direction closest to the air outlet 114 to the direction away from the air outlet 114. Furthermore, the sound absorption ports 156 of the multiple noise reduction disks 142 are connected, so that all the noise reduction disks 142 can absorb noise through the sound absorption ports 156. The noise reduction effect can be improved by using multiple noise reduction disks 142.

[0101] Specifically, the sound-absorbing port 156 of the noise-reducing disk 142 furthest from the air outlet 114 can be a blind hole structure, while the sound-absorbing ports 156 of the other noise-reducing disks 142 can be through holes, and the sound-absorbing ports 156 of multiple noise-reducing disks 142 can be arranged opposite each other. That is, the sound-absorbing ports 156 of different noise-reducing disks 142 can be arranged correspondingly.

[0102] Alternatively, all the sound-absorbing ports 156 of the noise-reducing discs 142 are through-hole structures, and a windproof cover is provided on the side of the noise-reducing disc 142 furthest from the air outlet 114 that is away from the air outlet 114.

[0103] As a possible embodiment of the present invention, when the lampshade 140 includes multiple noise reduction disks 142, the resonant frequencies of the resonant cavities 146 on the different noise reduction disks 142 are different.

[0104] In this embodiment, the resonant frequencies of the resonant cavities 146 on different noise reduction disks 142 are different. Therefore, the noise reduction frequency band of the lampshade 140 can be further increased, thereby further improving the noise reduction effect of the lampshade 140.

[0105] Specifically, the resonant frequencies of the resonant cavities 146 on different noise reduction disks 142 are different, and the resonant frequencies of the resonant cavities 146 on the same noise reduction unit 144 are different, which further widens the sound absorption band of the lampshade 140 and improves the noise reduction effect of the lampshade 140.

[0106] The number of noise reduction disks 142 can be two, three, four, five or six, etc., and the resonant frequencies of the resonant cavities 146 on different noise reduction disks 142 are different.

[0107] like Figure 5 and Figure 6 As shown, a noise reduction unit 144 has four resonant cavities 146, namely, the resonant cavities 146 include a first resonant cavity 168, a second resonant cavity 170, a third resonant cavity 172, and a fourth resonant cavity 174. The resonant frequencies of the first resonant cavity 168, the second resonant cavity 170, the third resonant cavity 172, and the fourth resonant cavity 174 are different. Furthermore, if the lampshade 140 includes two noise reduction disks 142, respectively... Figure 5 The noise-canceling disk 142 and Figure 6 The noise reduction disk 142, and then Figure 5 The first resonant cavity 168, the second resonant cavity 170, the third resonant cavity 172, and the fourth resonant cavity 174 in the middle are... Figure 6 The first resonant cavity 168, the second resonant cavity 170, the third resonant cavity 172 and the fourth resonant cavity 174 in the lamp cover 140 have different resonant frequencies. That is, the resonant cavity 146 on the lamp cover 140 has eight resonant frequencies.

[0108] like Figure 5 and Figure 6 As shown, in one possible embodiment of the present invention, the noise reduction disk 142 adopts a circular structure.

[0109] In this embodiment, the noise reduction disk 142 adopts a circular structure, so that the noise reduction disk 142 does not have sharp edges, thereby improving and reducing the danger of the noise reduction disk 142. Specifically, multiple noise reduction units 144 are arranged in a fan-shaped structure, and the multiple fan-shaped noise reduction units 144 form a circular noise reduction disk 142.

[0110] Multiple noise reduction units 144 have the same angle. If a noise reduction disk 142 includes two noise reduction units 144, the included angle of the fan-shaped structure formed by each noise reduction disk 142 is 180 degrees. If a noise reduction disk 142 includes three noise reduction units 144, the included angle of the fan-shaped structure formed by each noise reduction disk 142 is 120 degrees. If a noise reduction disk 142 includes four noise reduction units 144, the included angle of the fan-shaped structure formed by each noise reduction disk 142 is 90 degrees. Of course, in other embodiments of the present invention, a noise reduction disk 142 may include five, six, or seven resonant cavities 146, etc., which will not be listed here. Furthermore, the included angle of the fan-shaped structure formed by different noise reduction units 144 may also be different.

[0111] Furthermore, the air guide surface 160 is also circular, which makes the airflow directed around the lampshade 140 more uniform.

[0112] like Figure 7 and Figure 8 As shown, in one possible embodiment of the present invention, the noise-canceling disk 142 has a circular structure, and the resonant cavity 146 includes a first channel 152 and a second channel 154. The first channel 152 extends radially along the noise-canceling disk 142, and the second channel 154 extends circumferentially along the noise-canceling disk 142. Furthermore, the first channel 152 and the second channel 154 are alternately connected. This arrangement is more suitable for the circular structure of the noise-canceling disk 142 and makes fuller use of the space of the noise-canceling disk 142.

[0113] In this embodiment, the resonant cavity 146 includes a plurality of first channels 152 and a plurality of second channels 154. The first channels 152 extend radially along the noise reduction disk 142, and the second channels 154 extend circumferentially along the noise reduction disk 142. The first channels 152 and the second channels 154 are alternately connected to form a resonant cavity 146. By alternately connecting the first channels 152 and the second channels 154, the resonant cavity 146 is brought together, reducing the length of the resonant cavity 146 and making the resonant cavity 146 more adaptable to the circular structure of the noise reduction disk 142.

[0114] Specifically, to accommodate the circular structure of the air outlet 114 and the circular structure of the noise reduction disk 142, a resonant cavity 146 is designed, including a first channel 152 and a second channel 154 that are folded in an arc shape.

[0115] like Figure 7 As shown, the entire resonant cavity 146 can extend circumferentially along the noise reduction disk 142, or fold radially along the noise reduction disk 142; or, as... Figure 8 As shown, the entire resonant cavity 146 can extend radially along the noise reduction disk 142 and fold circumferentially along the noise reduction disk 142.

[0116] To make full use of the space in the thickness direction of the noise reduction disk 142, the cross-section of the first channel 152 and the second channel 154 is rectangular, and the cross-sectional area of ​​the first channel 152 and the second channel 154 is the same.

[0117] As one possible embodiment of the present invention, the resonant cavity 146 is a quarter-wavelength tube.

[0118] In this embodiment, the resonant cavity 146 uses a quarter-wavelength tube, which has good sound absorption effect, thereby improving the noise reduction effect of the lampshade 140.

[0119] Specifically, such as Figure 5 and Figure 6 As shown, a lampshade 140 may include two noise-canceling disks 142, wherein, Figure 5 A noise-canceling disk 142 is shown. Figure 6 Another noise reduction disk 142 is shown. Each noise reduction disk 142 has three noise reduction units 144. The three noise reduction units 144 on the same noise reduction disk 142 have the same structure. Each noise reduction unit 144 has four quarter-wavelength tubes. The four quarter-wavelength tubes have different resonant frequencies, that is, each noise reduction unit 144 has four resonant frequencies.

[0120] The noise reduction units 144 on different noise reduction disks 142 have different structures, and the resonant frequencies of the four quarter-wavelength tubes on the noise reduction units 144 on different noise reduction disks 142 are all different. That is, the lampshade 140 covers a total of 8 different first-order resonant frequencies. Through this combination and the higher-order resonant frequencies of each quarter-wavelength tube, a wide-band sound absorption and insulation effect can be formed. The cross-section of the quarter-wavelength tube is rectangular.

[0121] According to a second aspect of the present invention, a refrigeration device is provided, comprising: an air supply assembly 100 as provided in any of the above embodiments.

[0122] The refrigeration equipment provided by the present invention includes the air supply component 100 as provided in any of the above embodiments, and therefore has all the beneficial effects of the air supply component 100 as provided in any of the above embodiments, which will not be described in detail here.

[0123] Specifically, the refrigeration equipment includes an inner liner 180, and an air supply component 100 integrated on the inner liner 180. The refrigeration equipment can be a refrigerator, wine cabinet, display case, or vending machine, etc.

[0124] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0125] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or units referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0126] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0127] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An air supply assembly, characterized in that, include: An air duct, wherein an air inlet and an air outlet are formed; A lampshade is disposed on one side of the air duct and is disposed corresponding to the air inlet or the air outlet. The side of the lampshade facing the air duct has a sound-absorbing port, which is opposite to the air outlet. A resonant cavity is disposed inside the lampshade. One end of the resonant cavity is an open end and the other end is a closed end. The open end is connected to the sound-absorbing port. The lampshade is spaced apart from the side of the air duct where the air inlet or air outlet is located.

2. The air supply assembly according to claim 1, characterized in that, Also includes: A fan is installed in the air duct and is positioned at the air inlet or the air outlet, corresponding to the lampshade.

3. The air supply assembly according to claim 1, characterized in that, The air duct includes: The main body, wherein the air inlet and the air outlet are disposed on the main body; A connecting part is provided on the main body, and the connecting part is connected to the lampshade to form a gap between the main body and the lampshade.

4. The air supply assembly according to claim 3, characterized in that, The air duct also includes: The grille is connected to the main body and is located at the air inlet or the air outlet, with the connecting part provided on the grille.

5. The air supply assembly according to claim 3, characterized in that, The lampshade has an air guiding surface on the side facing the air duct.

6. The air supply assembly according to claim 5, characterized in that, The area of ​​the air guide surface is larger than the area of ​​the air inlet or the air outlet.

7. The air supply assembly according to any one of claims 1 to 6, characterized in that, The lampshade includes: At least one noise reduction disk is provided, the noise reduction disk is provided with the resonant cavity, and the sound absorption port is provided on the side of the noise reduction disk facing the air duct.

8. The air supply assembly according to claim 7, characterized in that, The noise reduction disk has multiple noise reduction units, and each noise reduction unit has at least one resonant cavity and at least one sound absorption port.

9. The air supply assembly according to claim 8, characterized in that, The perimeter of the air outlet or air inlet corresponding to the lampshade is A, the distance between the lampshade and its corresponding air outlet or air inlet is B, the number of noise reduction units on the noise reduction disk is N, the area of ​​the cross-section of the resonant cavity is C, and C÷(A×B÷N)≥1.5%.

10. The air supply assembly according to claim 8, characterized in that, The noise reduction unit has multiple resonant cavities and one sound-absorbing port. The multiple resonant cavities have different resonant frequencies, and the openings of the multiple resonant cavities are all connected to the sound-absorbing port.

11. The air supply assembly according to claim 10, characterized in that, When there are multiple noise reduction disks, the multiple noise reduction disks are stacked in a direction from the direction closest to the air duct to the direction away from the air duct; The sound-absorbing ports of the multiple noise-reducing disks are interconnected.

12. The air supply assembly according to claim 11, characterized in that, The resonant frequencies of the resonant cavities on different noise reduction disks are different.

13. The air supply assembly according to claim 7, characterized in that, The resonant cavity includes a plurality of alternating first channels and a plurality of second channels, wherein the first channels extend radially along the noise reduction disk and the second channels extend circumferentially along the noise reduction disk.

14. The air supply assembly according to any one of claims 1 to 6, characterized in that, The resonant cavity is a quarter-wavelength tube.

15. A refrigeration device, characterized in that, include: The air supply assembly as described in any one of claims 1 to 14.

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