Silencer and air conditioner

Abstract

The utility model discloses a silencer and an air conditioner, the silencer comprises an outer cylinder, and the outer cylinder is provided with a silencing cavity; a resonant cavity is arranged in the silencing cavity, the resonant cavity comprises an inflow cavity channel, a resonant cavity and an outflow cavity channel which are communicated in sequence, and the inflow cavity channel and the outflow cavity channel are both communicated with the silencing cavity. According to the utility model, the medium in the resonant cavity is driven to vibrate through the energy of the transmitted sound, so that the energy of the transmitted sound is eliminated, and the silencing effect of the silencer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and particularly relates to a muffler and an air conditioner. Background Art

[0002] An air conditioner, that is, an air conditioner, refers to a device that uses artificial means to adjust and control parameters such as the temperature, humidity, and flow rate of the air environment in a building or structure. It mainly includes a compressor, a condenser, and an evaporator.

[0003] During the operation of the air conditioner, if the medium pressure pulsation generated by the compressor is not effectively eliminated, it will be transmitted to the indoor unit side through the connecting pipe, generating the so-called "transmission noise", which seriously affects the use experience. In order to eliminate the transmission sound caused by the medium pressure pulsation, currently in the industry, a muffler is usually selected to be connected in series on the pipeline structure.

[0004] Among them, the most used is the expansion chamber muffler, but the single expansion chamber muffler has a narrow sound absorption frequency band, and a probability exists that there are transmission noises of multiple frequencies in an air conditioner product. Therefore, the sound absorption effect of the existing air conditioner muffler is poor. Summary of the Utility Model

[0005] The main purpose of the embodiment of the utility model is to provide a muffler and an air conditioner, aiming to improve the technical problem of poor sound absorption effect of the air conditioner muffler in the prior art.

[0006] The embodiment of the utility model provides a muffler, including:

[0007] An outer cylinder body, the outer cylinder body having a sound absorption cavity;

[0008] A resonance cavity is arranged in the sound absorption cavity, the resonance cavity includes an inflow channel, a resonance cavity, and an outflow channel that are connected in sequence, and both the inflow channel and the outflow channel are communicated with the sound absorption cavity.

[0009] In some embodiments of the utility model, the resonance cavity includes a first enclosing member and a second enclosing member, and the side walls of the first enclosing member and the side walls of the second enclosing member cooperate to define the inflow channel, the resonance cavity, and the outflow channel that are connected in sequence.

[0010] In some embodiments of the utility model, the first enclosing member is a first sheet-like structure, the second enclosing member is a second sheet-like structure, both the first sheet-like structure and the second sheet-like structure have notches, one end of the first sheet-like structure extends into the second sheet-like structure, one end of the second sheet-like structure extends into the first sheet-like structure, and the two side walls of the first sheet-like structure and the two side walls of the second sheet-like structure respectively correspond and cooperate to form the inflow channel and the outflow channel.

[0011] In some embodiments of the present utility model, the first enclosing member is a first arc-shaped member, the second enclosing member is a second arc-shaped member, and the first arc-shaped member and the second arc-shaped member are arranged opposite to each other;

[0012] One end of the first arc-shaped member is located outside one end of the second arc-shaped member and cooperates to form the inflow channel;

[0013] The other end of the first arc-shaped member is located inside the other end of the second arc-shaped member and cooperates to define the resonance cavity and the outflow channel.

[0014] In some embodiments, the first enclosing member includes a first arc segment, a first transition segment, and a second arc segment connected in sequence, and the radii of the first arc segment and the second arc segment are different; the second enclosing member includes a third arc segment, a second transition segment, and a fourth arc segment connected in sequence, and the radii of the third arc segment and the fourth arc segment are different;

[0015] The first arc segment extends into the second sheet-like structure, the third arc segment extends into the first enclosing member, and a part of the first arc segment, the first transition segment, the second arc segment, a part of the third arc segment, the second transition segment, and the fourth arc segment enclose to form the resonance cavity;

[0016] The first arc segment and the fourth arc segment are spaced apart to form the inflow channel, and the second arc segment and the third arc segment are spaced apart to form the outflow channel.

[0017] In some embodiments of the present utility model, the inflow channel is an arc-shaped flow channel; and / or

[0018] The outflow channel is an arc-shaped flow channel.

[0019] In some embodiments of the present utility model, the inflow channel includes a first straight channel and a second straight channel connected in sequence, and the included angle between the first straight channel and the second straight channel is greater than or equal to 10° and less than or equal to 170°; and / or

[0020] The outflow channel includes a third straight channel and a fourth straight channel connected in sequence, and the included angle between the third straight channel and the fourth straight channel is greater than or equal to 10° and less than or equal to 170°.

[0021] In some embodiments, the muffler includes a plurality of resonance cavities, and the plurality of resonance cavities are arranged in an array in the muffling cavity.

[0022] In some embodiments, the outer cylinder body includes an inlet portion and an outlet portion. The inlet portion and the outlet portion are respectively in communication with the muffler cavity. The cross-sectional area of the flow passage of the inlet portion is smaller than the cross-sectional area of the flow passage of the muffler cavity, and the cross-sectional area of the flow passage of the outlet portion is smaller than the cross-sectional area of the flow passage of the muffler cavity.

[0023] In some embodiments, the present utility model further provides an air conditioner, and the air conditioner further includes the above-mentioned muffler.

[0024] An embodiment of the present utility model provides a muffler and an air conditioner. The muffler includes an outer cylinder body and a unit cell. A resonance cavity is provided in the muffler cavity of the outer cylinder body. The resonance cavity includes an inflow channel, a resonance cavity, and an outflow channel that are sequentially connected. The medium can flow into the resonance cavity from the inflow channel and then flow out of the resonance cavity from the outflow channel. When the medium flows into the resonance cavity, it will have a fixed frequency in the resonance cavity body. By presetting the volume of the resonance cavity, the fixed frequency of the medium inside it can be made close to the frequency of the transmitted sound, so as to drive the vibration of the medium inside the resonance cavity through the energy of the transmitted sound, and then eliminate the energy of the transmitted sound and improve the muffling effect of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0026] Figure 1 It is a schematic diagram of the internal structure of the muffler according to an embodiment of the present utility model;

[0027] Figure 2 It is a sectional view schematic diagram of the muffler according to an embodiment of the present utility model;

[0028] Figure 3 It is a schematic diagram of the structure of the resonance cavity according to an embodiment of the present utility model;

[0029] Figure 4 It is a schematic diagram of the structure of the resonance cavity according to another embodiment of the present utility model;

[0030] Figure 5 It is a schematic diagram of the structure of the resonance cavity according to still another embodiment of the present utility model.

[0031] Reference numerals: 100, outer cylinder; 110, sound absorption cavity; 120, inlet part; 130, outlet part; 200, resonance cavity; 201, first enclosing member; 202, second enclosing member; 231, first arc segment; 232, second arc segment; 233, third arc segment; 234, fourth arc segment; 241, first transition segment; 242, second arc segment; 210, resonance chamber; 220, inflow channel; 230, outflow channel. Detailed implementation manners

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0036] As shown Figures 1-5 in the figure, the present utility model provides a muffler, which includes an outer cylinder 100 and a resonance cavity 200. The outer cylinder 100 has a muffling cavity 110, and the resonance cavity 200 is arranged in the muffling cavity 110. The resonance cavity 200 has an inflow channel 220, a resonance cavity 210 and an outflow channel 230 that are connected in sequence. Both the inflow channel 220 and the outflow channel 230 are connected to the muffling cavity 110.

[0037] It should be noted that the muffling cavity 110 of the outer cylinder 100 has a medium inlet and a medium outlet. The medium enters the muffling cavity 110 from the medium inlet and then flows out from the medium outlet. The medium in the muffling cavity 110 needs to flow through the inflow channel 220 first to enter the resonance cavity 210, and the medium in the resonance cavity 210 needs to pass through the outflow channel 230 first when flowing out into the muffling cavity 110.

[0038] Since the resonance cavity 210 has a certain volume, a certain amount of medium will always remain in the resonance cavity 210, and the medium remaining in the resonance cavity 210 will have a fixed frequency. By pre-acquiring the frequency of the transmitted sound, the volume of the resonance cavity 210 is set so that after there is medium inside it, the resonance frequency of its medium is close to the frequency of the transmitted sound.

[0039] It can be understood that, that is, when the medium flows into the resonance cavity 210, it will have a fixed frequency inside the resonance cavity 200. By pre-adjusting the volume of the resonance cavity 210 so that the fixed frequency of the medium inside it is close to the frequency of the transmitted sound, the energy of the transmitted sound can drive the medium inside the resonance cavity 210 to vibrate, thereby eliminating the energy of the transmitted sound and improving the muffling effect of the muffler.

[0040] In some embodiments, the resonance cavity 200 includes a first enclosing member 201 and a second enclosing member 202. The first enclosing member 201 and the second enclosing member 202 enclose to form the resonance cavity 200. The side wall of the first enclosing member 201 and the side wall of the second enclosing member 202 cooperate to define the inflow channel 220, the resonance cavity 210 and the outflow channel 230.

[0041] It should be noted that the enclosure between the above-mentioned first enclosing member 201 and the second enclosing member 202 is in a semi-enclosing form between the two enclosing members, and the first enclosing member 201 and the second enclosing member 202 are arranged at intervals and do not contact each other.

[0042] In some embodiments, the first enclosing member 201 is a first sheet-like structure, and the second enclosing member 202 is a second sheet-like structure. Both the first sheet-like structure and the second sheet-like structure have notches. One end of the first sheet-like structure extends into the second sheet-like structure, and one end of the second sheet-like structure extends into the first sheet-like structure. The two side walls of the first sheet-like structure and the two side walls of the second sheet-like structure are respectively and correspondingly matched to form an inflow channel 220 and an outflow channel 230. Here, the resonance cavity 210 can be located between the inflow channel 220 and the outflow channel 230.

[0043] It can be understood that the sheet-like structure can be regarded as a sheet-like structure with a notch, and the sheet-like structure can be various sheet-like structures such as an elliptical ring, a regular circular ring, and a rectangular ring. By changing the size of the notch, the first enclosing member 201 and the second enclosing member 202 with different shapes can be matched to form the resonance cavity 200.

[0044] In some embodiments, the first sheet-like structure and the second sheet-like structure are hemispherical structures, or can be quasi-hemispherical structures.

[0045] In some embodiments, in order to make the resonance cavities 210 of the resonance cavity 200 distribute the medium as evenly as possible, the first enclosing member 201 and the second enclosing member 202 are enclosed and formed by enclosing members with the same shape and the same size.

[0046] In some embodiments, both the first enclosing member 201 and the second enclosing member 202 are made of hard materials, such as metals, hard plastics, etc.

[0047] Generally, both the first enclosing member 201 and the second enclosing member 202 are made of the same material.

[0048] In some embodiments, the resonance cavity 200 is an integral structure. That is, the resonance cavity 200 is a single body structure.

[0049] In some embodiments, the first enclosing member 201 is a first arc-shaped member, and the second enclosing member 202 is a second arc-shaped member. The first arc-shaped member and the second arc-shaped member are arranged oppositely. One end of the first arc-shaped member is located outside one end of the second arc-shaped member and cooperates to form the inflow channel 220; the other end of the first arc-shaped member is located inside the other end of the second arc-shaped member and cooperates to define the resonance cavity 210 and the outflow channel 230.

[0050] It should be noted that by locating one end of the first arc-shaped member outside one end of the second arc-shaped member and the other end of the first arc-shaped member inside the other end of the second arc-shaped member, an interlocking structure is formed between the two.

[0051] Meanwhile, since the ends of both the first arc-shaped member and the second arc-shaped member are also arc-shaped structures, an arc-shaped medium inlet channel and an arc-shaped medium outlet channel can be formed. That is, the arc-shaped medium inlet channel is the inflow cavity 220, and the arc-shaped medium outlet channel is the outflow cavity 230. That is, both the inflow cavity 220 and the outflow cavity 230 are arc-shaped flow channels. It can be understood that since both the inflow cavity 220 and the outflow cavity 230 are arc-shaped flow channels, the speed of the medium flowing out or flowing in can be slowed down, so that the medium in the resonance cavity 210 maintains a relatively static state, so that the frequency of the medium in the resonance cavity 210 is close to a fixed frequency, can be closer to the frequency of the transmitted sound, thereby forming resonance, eliminating the energy of the transmitted sound, and ensuring the sound absorption effect.

[0052] In some embodiments, the first arc-shaped member / second arc-shaped member can be composed of arc segments with a fixed radius, and accordingly has an equal-diameter structure; it can also be formed by sequentially connecting multiple arc segments with different radii, and accordingly has a radius structure.

[0053] In some embodiments, the first enclosing member 201 includes a first arc segment 231, a first transition segment 241, and a second arc segment 232 that are sequentially connected. The radii of the first arc segment 231 and the second arc segment 232 are different; the second enclosing member 202 includes a third arc segment 233, a second transition segment, and a fourth arc segment 234 that are sequentially connected. The radii of the third arc segment 233 and the fourth arc segment 234 are different. The first arc segment 231 extends into the second sheet-like structure, the third arc segment 233 extends into the first enclosing member 201, and a part of the first arc segment 231, the first transition segment 241, the second arc segment 232, a part of the third arc segment 233, the second transition segment, and the fourth arc segment 234 enclose to form the resonance cavity 210. The first arc segment 231 and the fourth arc segment 234 are spaced apart to form the inflow cavity 220, and the second arc segment 232 and the third arc segment 233 are spaced apart to form the outflow cavity 230.

[0054] It should be noted that the first arc segment 231 and the second arc segment 232 of the first enclosing member 201 generally adopt arc segments with different radii, the third arc segment 233 and the fourth arc segment 234 of the second enclosing member 202 generally adopt arc segments with different radii, and the first transition segment 241 and the second transition segment are generally straight segments.

[0055] In some embodiments, the arc length of the first arc segment 231 is greater than the arc length of the second arc segment 232, and the arc length of the third arc segment 233 is greater than the arc length of the fourth arc segment 234.

[0056] In some embodiments, the radius of the circle or ellipse where the first arc segment 231 is located is greater than the radius of the circle or ellipse where the second arc segment 232 is located. The radius of the circle or ellipse where the third arc segment 233 is located is greater than the radius of the circle or ellipse where the fourth arc segment 234 is located. In some embodiments, the centers of the first arc segment 231 and the second arc segment 232 coincide; the centers of the third arc segment 233 and the fourth arc segment 234 coincide.

[0057] In some embodiments, the first transition segment 241 has the same length as the second transition segment. The arc length of the first arc segment 231 is the same as the arc length of the third arc segment 233, and the arc length of the second arc segment 232 is the same as the arc length of the third arc segment 233.

[0058] In some embodiments, the first transition segment 241 is offset toward the end of the first arc segment 231 away from the first transition segment 241, and the second transition segment is offset toward the end of the third arc segment 233 away from the third arc segment 233.

[0059] It can be understood that through the above settings, the cross-sectional areas of the inflow channel 220 and the outflow channel 230 can be made the same everywhere as much as possible, ensuring the uniform flow of the medium.

[0060] In some embodiments, the inflow channel 220 and the outflow channel 230 are oppositely arranged on both sides of the resonance cavity 210. The second arc-shaped member is recessed or bent at the inlet end of the inflow channel 220 to form an introduction portion, and the first arc-shaped member is recessed or bent at the outlet end of the outflow channel 230 to form a guiding portion.

[0061] It can be understood that by recessing or bending the second arc-shaped member at the inlet end of the inflow channel 220 to form an introduction portion, and recessing or bending the first arc-shaped member at the outlet end of the outflow channel 230 to form a guiding portion, on the one hand, the first arc-shaped member and the second arc-shaped member can enclose to form a concentric structure with the same size and structure, and on the other hand, it can also guide the medium flowing into the inflow channel 220 and the outflow channel 230.

[0062] In some embodiments, the first enclosing member includes a first straight wall portion, a second straight wall portion, and a third straight wall portion connected in sequence. The second enclosing member includes a fourth straight wall portion, a fifth straight wall portion, and a sixth straight wall portion connected in sequence. The first enclosing member and the second enclosing member are inserted and matched to form the resonance cavity. The first straight wall portion is located inside the fourth straight wall portion, and the sixth straight wall portion is located inside the third straight wall portion. The inner side of the fourth straight wall portion is the side of the fourth straight wall close to the center of the second enclosing member, and the inner side of the third straight wall portion is the side of the third straight wall portion close to the center of the first enclosing member.

[0063] It can be understood that the first straight wall portion, the second straight wall portion, the third straight wall portion, the fourth straight wall portion, the fifth straight wall portion, and the sixth straight wall portion cooperate to form an inflow channel 220, a resonance cavity 210, and an outflow channel 230 that are sequentially connected.

[0064] In some embodiments, both the first straight wall portion and the third straight wall portion are perpendicular to the third straight wall portion, and both the fourth straight wall portion and the sixth straight wall portion are perpendicular to the fifth straight wall portion.

[0065] In some embodiments, the inflow channel 220 is an arc-shaped flow channel. In some embodiments, the outflow channel 230 is an arc-shaped flow channel.

[0066] In some embodiments, the inflow channel 220 includes a first straight channel and a second straight channel that are sequentially connected, and the included angle between the first straight channel and the second straight channel is greater than or equal to 10° and less than or equal to 170°. The outflow channel 230 includes a third straight channel and a fourth straight channel that are sequentially connected, and the included angle between the third straight channel and the fourth straight channel is greater than or equal to 10° and less than or equal to 170°.

[0067] It can be understood that due to the included angle, the inflow channel 220 formed by the first straight channel and the second straight channel forms a bent flow channel, which can reduce the flow rate of the medium. Similarly, the outflow channel 230 formed by the third straight channel and the fourth straight channel is also a bent flow channel, which can reduce the flow rate of the medium.

[0068] In some embodiments, the resonance cavity body is configured such that when the medium enters the resonance cavity 210 from the anechoic cavity 110 and when the medium exits the resonance cavity 210 into the anechoic cavity 110, the flow direction of the medium changes at least once.

[0069] It can be understood that through the above settings, when the medium enters the resonance cavity 210 from the anechoic cavity 110, the medium is collided and consumes a certain amount of energy, slowing down the rate at which the medium enters the resonance cavity 210, and thus making the medium in the resonance cavity as stable as possible.

[0070] Similarly, through the above settings, when the medium exits the resonance cavity 210 into the anechoic cavity 110, the medium is collided and consumes a certain amount of energy, slowing down the rate at which the medium exits the resonance cavity 210, and thus making the medium in the resonance cavity as stable as possible.

[0071] Specifically, for example, the inflow channel 220 is arranged near the inlet end of the anechoic cavity, and the outflow channel 230 is arranged near the outlet end of the anechoic cavity. The tangent direction of the inlet end of the inflow channel 220 has a first preset included angle with the length direction of the anechoic cavity 110, and the first preset included angle is greater than 0° and less than or equal to 90°. The tangent direction of the outlet end of the outflow channel 230 has a second preset included angle with the length direction of the anechoic cavity 110, and the second preset included angle is greater than or equal to 90° and less than 180°.

[0072] It can be understood that the inflow channel 220 of the resonance cavity 200 is close to the inlet end of the muffler cavity 110, and the outflow channel 230 is close to the outlet end of the muffler cavity 110. Furthermore, the flow direction of the medium in the resonance cavity 200 is made consistent with the flow direction in the muffler cavity 110, thereby weakening the influence of the resonance cavity 200 on the flow direction of the medium. At the same time, the medium inlet and the medium outlet of the muffler cavity 110 are respectively arranged at both ends in the length direction of the muffler cavity 110. Furthermore, the length direction of the muffler cavity 110 is the flow direction of the medium. Therefore, making the first preset angle greater than 0° and less than or equal to 90° and the second preset angle greater than or equal to 90° and less than 180° can cause the medium to change the flow direction at least once when entering the resonance cavity 210 from the muffler cavity 110 and when the medium enters the muffler cavity 110 from the resonance cavity 210.

[0073] In some embodiments, the length of the resonance cavity 200 in the height direction of the muffler cavity 110 is 0.7 - 0.9 times the height of the muffler cavity 110.

[0074] It should be noted that the higher the length of the resonance cavity 200 in the height direction of the muffler cavity 110, the larger the reflection area of the sound waves in the muffler cavity 110 can be increased, and thus a part of the sound waves can be eliminated.

[0075] In some embodiments, the length of the resonance cavity 200 in the height direction of the muffler cavity 110 is 0.08 - 0.15 times the height of the muffler cavity 110.

[0076] In some embodiments, the muffler includes a plurality of resonance cavities 200, and the plurality of resonance cavities 200 are arranged in an array in the muffler cavity 110.

[0077] It can be understood that through the plurality of resonance cavities 200 arranged in an array, there are more reflectors inside the muffler, and thus a part of the sound waves can be eliminated.

[0078] In some embodiments, the muffler includes a plurality of resonance cavities 200, and the plurality of resonance cavities 200 are sequentially arranged at intervals along the length direction of the muffler cavity 110.

[0079] It can be understood that the plurality of resonance cavities 200 can improve the noise reduction effect of the muffler.

[0080] In some embodiments, the muffler includes a plurality of resonance cavities 200, and the plurality of resonance cavities 200 are sequentially arranged at equal intervals along the length direction of the muffler cavity 110.

[0081] In some embodiments, the muffler includes a plurality of resonance cavities 200, and the plurality of resonance cavities 200 have the same size, shape, and structure.

[0082] It can be understood that the above solution lies in superimposing the noise reduction effect to improve the overall noise reduction effect of the muffler.

[0083] In some embodiments, the muffler includes a plurality of resonance cavities 200, and the sizes, shapes, and structures of the plurality of resonance cavities 200 are all different.

[0084] It can be understood that since the sizes and structures of each resonance cavity 200 are different, the volumes of their resonance cavities 210 are also different. Since the noise reduction frequencies of each resonance cavity 210 are different, the noise reduction frequency range covered by the muffler is wider.

[0085] In some embodiments, the outer cylinder 100 includes an inlet portion 120 and an outlet portion 130. The inlet portion 120 and the outlet portion 130 are respectively communicated with the sound absorption cavity 110. The flow cross-sectional area of the inlet portion 120 is smaller than that of the sound absorption cavity 110, and the flow cross-sectional area of the outlet portion 130 is smaller than the flow cross-section of the sound absorption cavity 110.

[0086] It can be understood that due to the sudden change in the cross-sectional area of the inlet portion 120 entering the sound absorption cavity 110, sound waves will be reflected in the sound absorption cavity and thus a part of the sound waves will be eliminated.

[0087] In some embodiments, the present utility model further provides an air conditioner, and the air conditioner includes the muffler in the above-mentioned part or all of the embodiments. Therefore, the air conditioner has the beneficial effects of the above-mentioned part or all of the embodiments of the muffler, which will not be elaborated here one by one.

[0088] The above are only the optional embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the description and drawings of the present utility model under the application concept of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A muffler, characterized in that, Comprising: An outer cylinder body, the outer cylinder body having a sound absorption cavity; A resonance cavity is arranged in the sound absorption cavity, the resonance cavity comprising an inflow channel, a resonance cavity and an outflow channel that are sequentially communicated, and both the inflow channel and the outflow channel are communicated with the sound absorption cavity.

2. The muffler according to claim 1, characterized in that, The resonance cavity comprises a first enclosing member and a second enclosing member, and the side wall of the first enclosing member and the side wall of the second enclosing member cooperate to define the sequentially communicated inflow channel, resonance cavity and outflow channel.

3. The muffler according to claim 2, characterized in that, The first enclosing member is a first sheet-like structure, the second enclosing member is a second sheet-like structure, both the first sheet-like structure and the second sheet-like structure have notches, one end of the first sheet-like structure extends into the second sheet-like structure, one end of the second sheet-like structure extends into the first sheet-like structure, and the two side walls of the first sheet-like structure and the two side walls of the second sheet-like structure respectively correspond and cooperate to form the inflow channel, resonance cavity and outflow channel.

4. The muffler according to claim 3, characterized in that, The first enclosing member is a first arc-shaped member, the second enclosing member is a second arc-shaped member, and the first arc-shaped member and the second arc-shaped member are arranged opposite to each other; One end of the first arc-shaped member is located outside the second arc-shaped member and cooperates to form the inflow channel; The other end of the first arc-shaped member is located inside the second arc-shaped member and cooperates to define the resonance cavity and the outflow channel.

5. The muffler according to claim 3, characterized in that, The first enclosing member comprises a first arc segment, a first transition segment and a second arc segment that are sequentially connected, and the radii of the first arc segment and the second arc segment are different; the second enclosing member comprises a third arc segment, a second transition segment and a fourth arc segment that are sequentially connected, and the radii of the third arc segment and the fourth arc segment are different; The first arc segment extends into the second sheet-like structure, the third arc segment extends into the first sheet-like structure, and a part of the first arc segment, the first transition segment, the second arc segment, a part of the third arc segment, the second transition segment and the fourth arc segment enclose to form the resonance cavity; The first arc segment and the fourth arc segment are arranged at intervals to form the inflow channel, and the second arc segment and the third arc segment are arranged at intervals to form the outflow channel.

6. The muffler according to claim 1, characterized in that, The inflow channel is an arc-shaped flow channel; and / or The outflow channel is an arc-shaped flow channel.

7. The muffler according to claim 1, characterized in that, The inflow channel comprises a first straight channel and a second straight channel that are sequentially communicated, and the included angle between the first straight channel and the second straight channel is greater than or equal to 10° and less than or equal to 170°; and / or The outflow channel comprises a third straight channel and a fourth straight channel that are sequentially communicated, and the included angle between the third straight channel and the fourth straight channel is greater than or equal to 10° and less than or equal to 170°.

8. The muffler according to claim 1, characterized in that, The muffler comprises a plurality of resonance cavities, and the plurality of resonance cavities are arranged in an array in the sound absorption cavity.

9. The muffler according to claim 1, characterized in that, The outer cylinder body comprises an inlet part and an outlet part, the inlet part and the outlet part are respectively communicated with the sound absorption cavity, the flow cross-sectional area of the inlet part is smaller than the flow cross-sectional area of the sound absorption cavity, and the flow cross-sectional area of the outlet part is smaller than the flow cross-sectional area of the sound absorption cavity.

10. An air conditioner, characterized in that, Comprising the muffler according to any one of claims 1-9.

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