Silencing structure, panel assembly, air conditioner outdoor unit and air conditioner

Abstract

The utility model discloses a noise reduction structure, panel subassembly, air conditioner outdoor unit and air conditioner wherein the noise reduction structure comprises a noise reduction cylinder and a plurality of noise reduction pipes, the noise reduction cylinder is arranged at the air outlet, the noise reduction cylinder comprises an inner ring and an outer ring connected with each other, a noise reduction cavity is formed between the inner ring and the outer ring, and the noise reduction pipes are arranged in the noise reduction cavity. A plurality of silencing holes are formed in the inner ring in the circumferential direction, and the silencing holes communicate with the silencing cavity; the multiple silencing pipes are arranged in the silencing cavity and communicate with the silencing holes. According to the technical scheme, noise at the air outlet of the air conditioner outdoor unit can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to a sound-absorbing structure, a panel component, an air-conditioner outdoor unit and an air conditioner. Background Art

[0002] Although the air conditioner outdoor unit is installed outdoors, the noise generated during the operation of the air conditioner outdoor unit still causes considerable trouble to people's lives.

[0003] At present, the air outlet air guide ring of the air conditioner outdoor unit mostly adopts a structural form that is turned inward into the shell of the air conditioner indoor unit and then expanded into a bell mouth. This will produce a large vortex flow at the root of the air guide ring, thereby generating a large noise at the air outlet, causing the outdoor unit to make a lot of noise. Utility Model Content

[0004] The main purpose of the utility model is to provide a sound-absorbing structure, aiming to solve the noise problem at the air outlet of the outdoor unit of the air conditioner.

[0005] In order to achieve the above-mentioned purpose, the noise reduction structure proposed in the utility model is used for an outdoor unit of an air conditioner, wherein the outdoor unit of the air conditioner is provided with an air outlet, and the noise reduction structure comprises:

[0006] A silencer is arranged at the air outlet, the silencer comprises an inner ring and an outer ring connected to each other, a silencer cavity is formed between the inner ring and the outer ring, a plurality of silencer holes are opened in the circumferential direction of the inner ring, and the silencer holes are connected to the silencer cavity; and

[0007] A plurality of silencer pipes are arranged in the silencer cavity and communicated with the silencer hole.

[0008] Optionally, the silencer cylinder further includes a plurality of first baffles, which are arranged at intervals along the axial direction of the inner ring to divide the silencer cavity into a plurality of resonance cavities arranged along the axial direction.

[0009] Optionally, the silencer cylinder further includes a plurality of second baffles, which are arranged at intervals along the circumference of the inner ring to divide the silencer cavity into a plurality of resonance cavities arranged along the circumference.

[0010] Optionally, the silencer cylinder further includes a plurality of first baffles and a plurality of second baffles, wherein the plurality of first baffles are arranged at intervals along the axial direction of the inner ring, and the plurality of second baffles are arranged at intervals along the circumferential direction of the inner ring, so as to divide the silencer chamber into a plurality of resonance chambers arranged along the circumference and axial direction of the inner ring.

[0011] Optionally, part of the resonance cavity is connected to the silencer hole through the silencer pipe, and part of the resonance cavity is not connected to the silencer hole.

[0012] Optionally, part of the resonance cavity provided with the silencer pipe is connected to the plurality of silencer holes respectively through the plurality of silencer pipes, and part of the resonance cavity is connected to one silencer hole through one silencer pipe.

[0013] Optionally, the depth of the silencing cavity is greater than 10 mm.

[0014] Optionally, the length of the silencer tube in the silencer cavity is ≤10 mm.

[0015] Optionally, the diameter of the silencer hole is less than 1.5 mm.

[0016] Optionally, the sound-absorbing structure further includes a sound-absorbing layer, and the sound-absorbing layer is arranged on the inner ring.

[0017] The utility model also provides a panel assembly comprising a panel and the above-mentioned sound-absorbing structure, wherein the sound-absorbing tube of the sound-absorbing structure is detachably connected to the panel.

[0018] The utility model also provides an air-conditioner outdoor unit, comprising the above-mentioned panel assembly.

[0019] The utility model also provides an air conditioner, characterized by comprising the above-mentioned air conditioner outdoor unit.

[0020] The above-mentioned sound-absorbing structure has at least the following beneficial effects:

[0021] The technical solution of the utility model adopts a closed silencer cavity formed between the inner ring and the outer ring, and a plurality of silencer holes connected to the silencer cavity are opened on the inner ring, and the silencer tube in the silencer cavity is connected to the silencer holes. When the airflow enters the fluid channel of the inner ring, the airflow rubs against the hole walls of the silencer holes and the silencer tube in the form of air columns at the silencer holes, thereby consuming the sound energy of the medium and low frequency sound waves therein, significantly reducing the audible sound components in the spectrum, and achieving the purpose of noise reduction; secondly, the propagation process of the airflow in the silencer holes, the silencer tube and the silencer cavity causes a change in impedance and generates reflection and interference of sound energy, thereby reducing the sound energy radiated outward by the wind noise, and achieving the purpose of noise reduction; it can be seen that the utility model can reduce the noise at the air outlet of the outdoor unit of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 This is a structural schematic diagram of an embodiment of a panel assembly of the utility model;

[0024] Figure 2 It is a partial structural schematic diagram of the panel assembly of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the noise reduction structure of the utility model;

[0026] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle;

[0027] Figure 5 It is a partial structural schematic diagram of the sound-absorbing structure;

[0028] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure in;

[0029] Figure 7 It is a schematic diagram of the first sound-absorbing curve of the sound-absorbing structure;

[0030] Figure 8 It is a schematic diagram of the second noise reduction curve of the noise reduction structure.

[0031] Description of Figure Numbers:

[0032] Label name Label name 100 Silencer 140 First partition 110 Inner Circle 150 Second partition 111 Silencer hole 200 Silencer 120 Outer ring 300 panel 130 Resonance Cavity

[0033] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0038] The utility model provides a sound-absorbing structure.

[0039] Reference Figures 3 to 8 In one embodiment of the utility model, the silencer structure is used for an air-conditioning outdoor unit, which is provided with an air outlet. The silencer structure includes a silencer cylinder 100 and a plurality of silencer pipes 200. The silencer cylinder 100 is provided at the air outlet. The silencer cylinder 100 includes an inner ring 110 and an outer ring 120 connected to each other, and a silencer cavity is formed between the inner ring 110 and the outer ring 120. The inner ring 110 is provided with a plurality of silencer holes 111 along the circumferential direction, and the silencer holes 111 are connected to the silencer cavity. The plurality of silencer pipes 200 are provided in the silencer cavity and are connected to the silencer holes 111.

[0040] Specifically, a closed silencer cavity is formed between the inner ring 110 and the outer ring 120, and a plurality of silencer holes 111 connected to the silencer cavity are provided on the inner ring 110, and the silencer tube 200 in the silencer cavity is connected to the silencer holes 111. When the airflow enters the fluid channel of the inner ring 110, the airflow rubs against the silencer holes 111 and the hole walls of the silencer tube 200 in the form of an air column at the silencer holes 111, thereby consuming the sound energy of the medium and low frequency sound waves therein, significantly reducing the audible sound components in the spectrum, and achieving the purpose of noise reduction; secondly, the propagation process of the airflow in the silencer holes 111, the silencer tube 200 and the silencer cavity causes a change in impedance and generates reflection and interference of sound energy, thereby reducing the sound energy radiated outward by the wind noise, and achieving the purpose of noise reduction; it can be seen that the utility model can reduce the noise at the air outlet of the outdoor unit of the air conditioner.

[0041] In addition, through reasonable design in this solution, the frequency of the incident sound wave can be kept consistent with the natural frequency of the silencer chamber, so that the movement speed of the air column at the silencer hole 111 and the silencer tube 200 can be maximized, thereby maximizing the damping effect here, thereby improving the dissipation efficiency of sound energy, thereby significantly improving the noise reduction effect of the product.

[0042] The distribution of the silencer holes 111 is calculated based on the lower yin frequency band, and the specific form is not fixed here.

[0043] Optionally, in the first embodiment, the silencer 100 further includes a plurality of first partitions 140, and the plurality of first partitions 140 are arranged at axial intervals along the inner ring 110 to divide the silencer chamber into a plurality of axially arranged resonance chambers 130. It can be understood that the provision of the first partitions 140 can, on the one hand, improve the structural strength of the silencer 100, and on the other hand, the first partitions 140 divide the silencer chamber into a plurality of axially arranged resonance chambers 130, which can enhance the noise reduction capability of the silencer chamber and further reduce the noise when the silencer structure is in use.

[0044] Optionally, in the second embodiment, the silencer 100 further includes a plurality of second partitions 150, which are arranged at circumferential intervals along the inner ring 110 to divide the silencer cavity into a plurality of circumferentially arranged resonance cavities 130; it can be understood that the provision of the second partitions 150 can, on the one hand, improve the structural strength of the silencer 100, and on the other hand, the second partitions 150 divide the silencer cavity into a plurality of circumferentially arranged resonance cavities 130, which can enhance the noise reduction capability of the silencer cavity and further reduce the noise when the silencer structure is in use.

[0045] Optionally, in a third embodiment, the silencer 100 further includes a plurality of first baffles 140 and a plurality of second baffles 150, wherein the plurality of first baffles 140 are spaced apart along the axial direction of the inner ring 110, and the plurality of second baffles 150 are spaced apart along the circumferential direction of the inner ring 110, so as to divide the silencer chamber into a plurality of resonance chambers 130 arranged circumferentially and axially along the inner ring 110; it can be understood that the arrangement of the first baffles 140 and the second baffles 150 can, on the one hand, improve the structural strength of the silencer 100, and on the other hand, the first baffles 140 and the second baffles 150 divide the silencer chamber into a plurality of resonance chambers 130 arranged axially and circumferentially, which can enhance the noise reduction capability of the silencer chamber and further reduce the noise when the silencer structure is in use.

[0046] Of course, in other embodiments, the first partition plate 140 and the second partition plate 150 may not be provided, and the silencing chamber may be provided in an annular chamber.

[0047] Furthermore, part of the resonance cavity 130 is connected to the silencer hole 111 through the silencer pipe 200, and part of the resonance cavity 130 is not connected to the silencer hole 111; this can solve the problem of single and multi-field coupling noise, so as to consume sound energy to the greatest extent and improve the noise reduction effect.

[0048] It should be noted that, in the present embodiment, part of the resonance cavity 130 is connected to the silencer hole 111 through the silencer pipe 200, part of the resonance cavity 130 is directly connected to the silencer hole 111, and part of the resonance cavity 130 is not directly connected to the silencer hole 111, nor is it connected to the silencer hole 111 through the silencer pipe 200, but is itself a closed chamber formed by the inner ring 110, the outer ring 120, the first partition plate 140 and / or the second partition plate 150.

[0049] Furthermore, the resonance cavity 130 provided with the silencer pipe 200 is partially connected to the multiple silencer holes 111 through the multiple silencer pipes 200 respectively, and partially connected to the one silencer hole 111 through one silencer pipe 200, so that the noise can be eliminated more effectively.

[0050] In the present embodiment, part of the resonance cavity 130 is not directly connected to the silencer hole 111, nor is it connected to the silencer hole 111 through the silencer pipe 200, but is itself a closed chamber formed by the inner circle 110, the outer circle 120, the first partition 140 and / or the second partition 150; part of the resonance cavity 130 is directly connected to the silencer hole 111; part of the resonance cavity 130 is connected to a silencer hole 111 through a silencer pipe 200; part of the resonance cavity 130 is connected to two silencer holes 111 respectively through two silencer pipes 200; part of the resonance cavity 130 is connected to four silencer holes 111 respectively through four silencer pipes 200; this can significantly increase the number of silencer holes 111 and silencer pipes 200, and further improve the noise reduction effect. Of course, the present invention is not limited to this. In other embodiments, part of the resonance cavity 130 is directly connected to the silencer hole 111; part of the resonance cavity 130 is connected to one silencer hole 111 through a silencer tube 200; part of the resonance cavity 130 is connected to two silencer holes 111 respectively through two silencer tubes 200; part of the resonance cavity 130 is connected to four silencer holes 111 respectively through four silencer tubes 200.

[0051] Optionally, the depth of the silencer cavity is greater than 10 mm. Therefore, after the airflow enters the silencer cavity, a certain combing space needs to be left to comb the airflow to avoid abnormal noise caused by airflow impact due to too small a gap. Therefore, the depth of the silencer cavity has certain requirements and it is not easy to be too small. When the depth of the silencer cavity is greater than 10 mm, it can effectively reduce the probability of abnormal noise caused by airflow impact.

[0052] It should be noted that the depth of the silencing cavity is also the depth of the resonance cavity 130 .

[0053] In this embodiment, the depth of the muffler cavity 11 refers to the distance from the outer ring wall of the inner ring 110 to the inner ring wall of the outer ring 120 .

[0054] Furthermore, the length of the silencer tube 200 in the silencer cavity is ≤10 mm. This is because the depth of the silencer tube 200 can change the position of the resonance sound absorption peak. When the length of the silencer tube 200 in the silencer cavity is ≤10 mm, noise can be eliminated more effectively.

[0055] Specifically, the form and length of the silencer pipe 200 are calculated based on the resistance frequency cancellation, and the sound is attenuated in the cavity resonance, thereby achieving the purpose of efficient sound absorption.

[0056] Among them, the aperture of the silencer hole 111 is less than 1.5mm; it can be understood that the silencer hole 111 can effectively control the propagation of aerodynamic noise, has low-medium frequency broadband silencer performance, and the small aperture can improve the silencer coefficient, the low porosity can increase the width of the sound absorption band, and the depth of the orifice plate can change the position of the resonance sound absorption peak. Therefore, in actual production, the size and density of the silencer hole 111 and the thickness of the inner ring 110 should be designed according to specific conditions and product requirements. It can ensure that the silencer hole 111 plays an effective small hole silencer role on the noise generated when the air conditioner outdoor unit is running, so that the spectrum of different frequency noises generated when the air conditioner outdoor unit is running moves to the high frequency or ultra-high frequency spectrum, and the audible sound components in the spectrum are significantly reduced.

[0057] The specific size of the muffler hole 111 is calculated based on the lower yin frequency band, and the specific form is not fixed here.

[0058] Optionally, the sound-absorbing structure also includes a sound-absorbing layer, which is arranged on the inner circle 110; the sound-absorbing layer is mainly arranged to weaken high-frequency noise, and realizes noise absorption of different frequencies such as high frequency, medium frequency and low frequency through different methods to improve the sound-absorbing effect of the sound-absorbing structure.

[0059] In this embodiment, the sound deadening of the entire sound deadening structure is achieved by both reactive sound deadening and resistive sound deadening, which can more effectively eliminate noise.

[0060] The sound-absorbing layer is a porous structure composed of at least one sound-absorbing material such as glass fiber wool, sound-absorbing sponge, felt, low-carbon steel wire, etc., among which the glass fiber wool mainly has a good sound-absorbing effect on low and medium frequencies, while the peak sound-absorbing sponge mainly has a good sound-absorbing effect on high frequencies; when sound waves enter the sound-absorbing layer, the sound energy of the medium and high frequency sound waves will be converted into heat energy and dissipated in the sound-absorbing layer. This solution arranges a sound-absorbing layer in the inner circle 110 so that the product's resistant sound-absorbing structure and the product's resistive sound-absorbing structure work together, thereby broadening the product's sound absorption frequency band and further optimizing the product's sound absorption effect.

[0061] Reference Figure 1 and Figure 2 The utility model also proposes a panel assembly, which includes a panel 300 and a muffler structure. The specific structure of the muffler structure refers to the above embodiment. Since the panel assembly adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the muffler cylinder 100 of the muffler structure is detachably connected to the panel 300.

[0062] Specifically, the silencer tube of the silencer structure is detachably connected to the panel 300, so that the panel 300 or the silencer structure can be disassembled for maintenance if there is an abnormality, and the damaged silencer structure or panel can be replaced independently, thereby reducing maintenance costs.

[0063] The utility model also proposes an air-conditioning outdoor unit, which includes a panel assembly. The specific structure of the panel assembly refers to the above-mentioned embodiment. Since the air-conditioning outdoor unit adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0064] The utility model also proposes an air conditioner, which includes an air-conditioning outdoor unit. The specific structure of the air-conditioning outdoor unit refers to the above-mentioned embodiment. Since the air conditioner adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0065] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sound-absorbing structure for an outdoor air conditioner, wherein the outdoor air conditioner is provided with an air outlet, characterized in that: The noise reduction structure comprises: A silencer is arranged at the air outlet, the silencer comprises an inner ring and an outer ring connected to each other, a silencer cavity is formed between the inner ring and the outer ring, a plurality of silencer holes are opened in the circumferential direction of the inner ring, and the silencer holes are connected to the silencer cavity; and A plurality of silencer pipes are arranged in the silencer cavity and communicated with the silencer hole.

2. The sound absorbing structure according to claim 1, characterized in that: The silencer cylinder further comprises a plurality of first baffles, which are arranged at intervals along the axial direction of the inner ring to divide the silencer cavity into a plurality of resonance cavities arranged along the axial direction.

3. The sound absorbing structure according to claim 1, characterized in that: The silencer cylinder further comprises a plurality of second baffles, which are arranged at intervals along the circumference of the inner ring to divide the silencer cavity into a plurality of resonance cavities arranged along the circumference.

4. The sound absorbing structure according to claim 1, characterized in that: The silencer cylinder also includes a plurality of first baffles and a plurality of second baffles, wherein the plurality of first baffles are arranged at intervals along the axial direction of the inner ring, and the plurality of second baffles are arranged at intervals along the circumferential direction of the inner ring, so as to divide the silencer chamber into a plurality of resonance chambers arranged along the circumference and axial direction of the inner ring.

5. The sound-absorbing structure according to any one of claims 2 to 4, characterized in that: Part of the resonance cavity is communicated with the silencer hole through the silencer pipe, and part of the resonance cavity is not communicated with the silencer hole.

6. The sound absorbing structure according to claim 5, characterized in that: The resonance cavity provided with the silencer pipe is partially connected to the plurality of silencer holes through the plurality of silencer pipes respectively, and partially connected to one silencer hole through one silencer pipe.

7. The sound absorbing structure according to claim 1, characterized in that: The depth of the silencing cavity is greater than 10 mm.

8. The sound absorbing structure according to claim 7, characterized in that: The length of the silencer tube in the silencer cavity is ≤10 mm.

9. The sound absorbing structure according to claim 1, characterized in that: The diameter of the muffler hole is less than 1.5 mm.

10. The sound absorbing structure according to claim 1, characterized in that: The sound-absorbing structure further comprises a sound-absorbing layer, and the sound-absorbing layer is arranged on the inner ring.

11. A panel assembly, characterized in that: It comprises a panel and a sound-absorbing structure as claimed in any one of claims 1 to 10, wherein the sound-absorbing tube of the sound-absorbing structure is detachably connected to the panel.

12. An air conditioner outdoor unit, characterized in that: Comprising the panel assembly as claimed in claim 11.

13. An air conditioner, characterized in that: Comprising the air conditioner outdoor unit as described in claim 12.

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