Noise reduction device and clothing processing device

Abstract

The present invention is applicable to the technical field of household electrical appliances, and provides a noise reduction device and a clothing processing device. The noise reduction device comprises a main body, and a first cavity and a second cavity that are not directly connected are arranged at both ends of the main body; a sound absorbing member is sleeved on the outside of the main body; wherein an annular flow channel is formed between the main body and the sound absorbing member, and the annular flow channel is respectively connected to the first cavity and the second cavity. The clothing processing device comprises the noise reduction device, a fan and a fan sound insulation assembly. The noise reduction device adopts a first cavity and a second cavity that are not directly connected to each other that are arranged at both ends of the main body, and the first cavity and the second cavity are connected by setting an annular flow channel. In this way, the contact area and contact time between the noise and the sound absorbing member are increased, which is conducive to the sound absorbing member to better play the role of sound absorption and noise reduction, so that the noise generated by the clothing processing device during actual use is effectively reduced, and the user's comfort is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of household electrical appliances, and in particular relates to a noise reduction device and a clothing processing device. Background Art

[0002] Existing clothes processing devices, such as drum washing machines, are equipped with fans. When washing clothes, the pressure generated by the fans drives the water to roll, thereby washing clothes; or in dryers, the fans blow air to dry clothes. However, there is a large noise problem in actual application, which affects the comfort of actual use. Therefore, it is necessary to reduce the noise of the fans.

[0003] Most of the existing noise reduction devices are to set sound-absorbing cotton on the wall of the air inlet channel or the exhaust channel to reduce noise. In this way, the contact time between the noise and the sound-absorbing cotton is short, and the noise reduction effect is poor. Summary of the invention

[0004] In view of this, the present invention provides a noise reduction device and a clothes processing device to solve the noise problem generated by the fan during operation.

[0005] To solve the above problems, the technical solution of the present invention is implemented as follows: a noise reduction device, comprising: a body, a first cavity and a second cavity that are not directly connected are arranged at both ends of the body; a partition is arranged on the outer surface of the body; a sound absorbing member is sleeved on the outside of the body; wherein the partition is a perforated plate, a flow channel is formed between the partition and the sound absorbing member, and the flow channel is respectively connected with the first cavity and the second cavity; wherein the flow channel includes an annular flow channel extending along the outer surface of the body, the flow channel extends between the inner surface of the sound absorbing member and the outer surface of the body, and under the isolation of the partition, the sound wave can travel one or more circles along the axial direction of the inner surface of the sound absorbing member; the first cavity and the second cavity are arranged to be not directly connected, and the first cavity and the second cavity are connected by the flow channel, so that the noise can mainly enter from the first cavity, then propagate along the flow channel, and finally be discharged from the second cavity, rather than entering from the first cavity and then being directly discharged from the second cavity.

[0006] Preferably, the main body includes: a cylinder, including a side wall, a channel connecting the two ends of the cylinder is formed inside the side wall; a baffle is arranged in the channel to divide the channel into the first cavity and the second cavity; wherein the partition is arranged on the outer surface of the side wall and extends outward to form the annular flow channel, and a first opening connected to the first cavity and a second opening connected to the second cavity are opened on the side wall, and the first opening and the second opening are respectively connected to the annular flow channel.

[0007] Preferably, the partition includes a first partition and a second partition arranged at intervals along the length direction of the cylinder, a first annular flow channel is formed between the first partition and one end of the cylinder close to the first partition, a second annular flow channel is formed between the second partition and the other end of the cylinder, and a connecting flow channel connecting the first annular flow channel and the second annular flow channel is formed between the first partition and the second partition.

[0008] Preferably, the main body includes: a support rod; a first connector connected to one end of the support rod and forming the first cavity inside; a second connector connected to the other end of the support rod and forming the second cavity inside; an air pipe including a pipe wall, a through groove being provided on the pipe wall, the through groove facing the sound absorbing member to form the annular flow channel; wherein the partition is the pipe wall, one end of the air pipe is connected to the first connector and communicated with the first cavity, and the other end of the air pipe is connected to the second connector and communicated with the second cavity.

[0009] Preferably, the body comprises a first noise reduction unit and a second noise reduction unit spliced ​​to each other, the first cavity is formed on the first noise reduction unit, the second cavity is formed on the second noise reduction unit, and the partition is provided on the first noise reduction unit and / or the second noise reduction unit.

[0010] Preferably, the first noise reduction unit includes: a first noise reduction cylinder, including a first side wall, a first channel connecting the two ends of the first noise reduction cylinder is formed inside the first side wall; a first partition plate is arranged in the first channel, and is used to partition the first channel to form the first cavity; wherein, the partition includes a first partition plate, the first partition plate is connected to the outer surface of the first side wall and extends outward to form a first annular flow channel with one end of the first noise reduction cylinder, and the first noise reduction cylinder is provided with a first connecting port for connecting the first cavity with the first annular flow channel.

[0011] Preferably, the second noise reduction unit includes: a second noise reduction cylinder, including a second side wall, a second channel connecting the two ends of the second noise reduction cylinder is formed inside the second side wall; a second partition plate is arranged in the second channel, and is used to partition the second channel to form the second cavity; wherein, the partition also includes a second partition plate, the second partition plate is connected to the outer surface of the second noise reduction cylinder and extends outward to form a third annular flow channel with one end of the second noise reduction cylinder, and the second noise reduction cylinder is provided with a second connecting port for connecting the second cavity with the third annular flow channel.

[0012] Preferably, a second annular flow channel is formed between the first partition plate and the second partition plate, the first annular flow channel and the second annular flow channel are connected via a first connecting flow channel, and the second annular flow channel and the third annular flow channel are connected via a second connecting flow channel.

[0013] Preferably, the first noise reduction unit also includes: a first connecting member, including a first fixed end and a first connecting end, the first fixed end is connected to the first partition plate and / or the first side wall, and the first connecting end is used to connect to the second noise reduction unit to achieve splicing; wherein, the first partition plate is provided with a first connecting structure for connecting the second noise reduction unit.

[0014] Preferably, the second noise reduction unit also includes: a second connecting member, including a second fixed end and a second connecting end, the second fixed end is connected to the second partition plate and / or the second side wall, and the second connecting end is used to connect to the first connecting structure to achieve the splicing; wherein, the second partition plate is provided with a second connecting structure for connection with the first connecting end.

[0015] Preferably, two first connecting members are relatively arranged, the first communicating flow channel is formed between the two first connecting members, and at least one of the two first connecting members is provided with a first communicating structure for connecting the first communicating flow channel with the second annular flow channel.

[0016] Preferably, two second connecting members are relatively arranged, the second communicating flow channel is formed between the two second connecting members, and at least one of the two second connecting members is provided with a second connecting structure for connecting the second communicating flow channel with the third annular flow channel.

[0017] Preferably, the first noise reduction unit further includes: a first top plate, which is arranged at one end of the first noise reduction tube to extend outward relative to the outer surface of the first side wall; wherein the first top plate and the first partition plate form the first annular flow channel.

[0018] Preferably, the second noise reduction unit further includes: a second top plate, which is arranged at one end of the second noise reduction tube to extend outwardly relative to the outer surface of the first side wall; wherein the second top plate and the second partition plate form the third annular flow channel.

[0019] Preferably, the noise reduction device further comprises: a shell, which is used to be sleeved on the outside of the sound absorbing component, and the shell is provided with an installation opening for the sound absorbing component to be installed; and a cover plate, which is fixed to the shell to cover the installation opening.

[0020] The present invention also provides a clothes processing device, comprising: the above-mentioned noise reduction device;

[0021] A fan; a fan sound insulation component, which is sleeved on the outside of the fan to reduce the noise generated by the fan, and the noise reduction device is arranged at the air flow inlet of the fan sound insulation component.

[0022] Preferably, the clothing processing device is a clothing washing device or a clothing washing and drying device, and the fan is used to blow air into the washing water to wash the clothing.

[0023] Preferably, the clothes processing device is a clothes drying device or a clothes washing and drying device, and the fan is used for blowing air to dry the clothes.

[0024] The noise reduction device and clothing processing device provided by the present invention adopt a method of providing a first cavity and a second cavity that are not directly connected at both ends of the body, and providing a partition and a sound absorbing member on the outside of the body, forming a flow channel between the partition and the sound absorbing member, and the flow channel is connected to the first cavity and the second cavity respectively. In this way, during the noise reduction process, the noise transmitted into the first cavity or the second cavity will not directly pass through the second cavity or the first cavity, but will be propagated along the path of the annular flow channel. The noise propagates in the annular flow channel, increasing the contact area and contact time with the sound absorbing member, which is conducive to the sound absorbing member to better play the role of sound absorption and noise reduction. At the same time, combined with the partition being set as a perforated plate, the frequency range of the noise that can be eliminated is increased, so that the noise generated by the clothing processing device during actual use is effectively reduced, and the user's comfort is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a cross-sectional schematic diagram of the first noise reduction device provided by an embodiment of the present invention after being assembled with a fan sound insulation component;

[0027] Figure 2 is an exploded schematic diagram of a first noise reduction device provided by an embodiment of the present invention;

[0028] Figure 3 is an exploded schematic diagram of the first noise reduction device provided by an embodiment of the present invention in another orientation;

[0029] Figure 4 is a cross-sectional schematic diagram of a first noise reduction device provided by an embodiment of the present invention;

[0030] Figure 5 is a schematic structural diagram of a first body provided by an embodiment of the present invention;

[0031] Figure 6 is a schematic structural diagram of the first body provided by an embodiment of the present invention in another orientation;

[0032] Figure 7 is a schematic diagram of a main propagation path of noise in a first noise reduction device provided by an embodiment of the present invention;

[0033] Figure 8 is a structural schematic diagram of a second noise reduction device provided by an embodiment of the present invention;

[0034] Fig. 9 is a cross-sectional schematic diagram of the second noise reduction device provided by an embodiment of the present invention after being assembled with a fan sound insulation component;

[0035] Fig.10 is a cross-sectional schematic diagram of a third noise reduction device provided by an embodiment of the present invention after being assembled with a fan sound insulation component;

[0036] Fig.11 is a front view of a first noise reduction unit provided by an embodiment of the present invention;

[0037] Fig.12 is a front view of a second noise reduction unit provided by an embodiment of the present invention;

[0038] Fig.13 is a cross-sectional schematic diagram of a third noise reduction device provided by an embodiment of the present invention;

[0039] Fig.14 is a schematic diagram of the structure of a third body provided by an embodiment of the present invention;

[0040] Fig.15 It is a schematic diagram of the structure of the third entity provided by an embodiment of the present invention.

[0041] Description of reference numerals:

[0042] 1a (1b, 1c), body; 12, first cavity; 13, second cavity; 14, sound absorbing member; 15a (15b, 15c), annular flow channel; 151a (151c), first annular flow channel; 152a (152c), second annular flow channel; 17, shell; 171, air inlet; 18, cover plate; 181, air outlet; 19a (143b, 9c), through hole; 2, fan; 21, air flow inlet; 3, fan sound insulation component;

[0043] 11a, cylinder; 12a, baffle; 13a, partition; 131a, first partition; 132a, second partition; 17a, bottom plate; 18a, top plate; 110a, partition; 111a, side wall; 113a, first opening; 114a, second opening; 110a, partition; 161a, connecting flow channel;

[0044] 11b, support rod; 12b, first connector; 13b, second connector; 14b, gas pipe; 141b, pipe wall; 142b, through groove;

[0045] 11c, first noise reduction unit; 12c, second noise reduction unit; 153c, third annular flow channel; 161c, first communication flow channel; 162c, second communication flow channel; 16c, first communication structure; 17c, second communication structure; 18c, reinforcing rib; 111c, first noise reduction cylinder; 112c, first partition plate; 113c, first partition plate; 114c, first connecting member; 116c, first connecting structure; 117c, first communication port; 118c, first top plate; 119c, third connecting structure; 1141c, first fixed end; 1142c, first connecting end; 121c, second noise reduction cylinder; 122c, second partition plate; 123c, second partition plate; 124c, second connecting member; 126c, second connecting structure; 127, second connecting port; 128c, second top plate; 129c, fourth connecting structure; 1241c, second fixed end; 1242c, second connecting end. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0047] The various specific technical features and embodiments described in the specific implementation methods can be combined in any suitable manner unless there is any contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features / embodiments in the present invention will not be described separately.

[0048] like Figure 1As shown, the noise reduction device provided in the embodiment of the present invention is mainly used for noise reduction on a clothing processing device (such as a drum washing machine) that uses the pressure generated by the fan 2 to drive the water flow to roll to play the role of washing clothes, or on a clothing processing device (such as a dryer or a washer-dryer) that dries clothes by generating drying gas through the fan 2. Of course, it can also be used to reduce other noises generated by the motor. In the embodiment of the present invention, the use of the noise reduction device on the clothing processing device is illustrated, and the scope of use of the noise reduction device is not limited. Specifically, since the fan 2 will radiate a large noise from the air flow inlet 21 of the fan 2 when it is running, the noise reduction device is used to reduce the noise of the air flow inlet 21 of the fan 2 to reduce the noise radiated outward from the air flow inlet 21 of the fan 2.

[0049] The noise reduction device includes a body, a partition and a sound absorbing member 14. The two ends of the body 1a are provided with a first cavity 12 and a second cavity 13 that are not directly connected. The first cavity 12 and the second cavity 13 are not directly connected, which means that the two are independent of each other, and the internal cavities are not directly connected, while the internal cavities of the first cavity 12 and the second cavity 13 are both connected to the outside. In a specific application, the first cavity 12 and the second cavity 13 can both be used for the entry of noise and the output after noise reduction. In this embodiment, the first cavity 12 is used to communicate with the airflow inlet 21 of the fan 2, and the second cavity 13 is used for the discharge of sound after noise reduction. The partition is arranged on the outer surface of the body, and the sound absorbing member 14 is sleeved on the outside of the body. In this way, a flow channel is formed between the partition and the sound absorbing member 14, and the flow channel is respectively connected to the first cavity 12 and the second cavity 13. The flow channel extends between the inner surface of the sound absorbing member 14 and the outer surface of the body 1a, and under the partition of the partition, the sound wave can travel one or more circles along the circumference of the inner surface of the sound absorbing member 14. In this way, the first cavity 12 and the second cavity 13 are not directly connected, but the first cavity 12 and the second cavity 13 are connected through the flow channel, so that the noise can enter mainly from the first cavity 12, then propagate along the flow channel, and finally be discharged from the second cavity 13, rather than entering from the first cavity 12 and then being discharged directly from the second cavity 13. Under this setting, the time and area of ​​the noise contacting with the sound absorbing member 14 during the noise reduction process are prolonged, which is conducive to improving the noise reduction effect.

[0050] Moreover, the partition is set as a perforated plate structure, that is, the partition has a plurality of through holes. With this arrangement, the noise reduction effect of each through hole can have a good noise reduction effect on medium and low frequency noise (frequency between 100 and 1600 Hz). Therefore, the arrangement of the partition realizes that in the process of noise reduction, in addition to the noise being transmitted and reduced along the path of the flow channel, the noise will also pass through each through hole, and continuously contact and absorb the sound absorbing member in the space formed by the combination of the sound absorbing member, the partition and the main body, which can effectively reduce the medium and low frequency noise in the noise. In the specific setting, the extension mode of the flow channel can be selected according to the noise reduction requirements. Preferably, the flow channel is set to include an annular flow channel extending along the outer surface of the main body 1. The annular flow channel can be a whole composed of multiple sub-flow channels that are spaced apart and distributed non-continuously, or it can be continuously distributed around the outer surface of the main body 1a, for example, it can be continuously distributed in a "spiral shape" or in a "corrugated shape". It should be noted that the annular flow channel means that the path in which the sound wave propagates is one or more circles around the inner surface of the sound absorbing member 14 in the circumferential direction, including the case where the flow channel only extends along the circumference of the circle but not along the length direction, and also includes the case where the flow channel shape extends along the circumference of the circle and along the length direction. In this way, when the noise propagates in the annular flow channel, it can propagate along the path of the annular flow channel, thereby increasing the contact area with the sound absorbing member 14, and achieving the purpose of noise reduction under the continuous absorption of noise by the sound absorbing member 14, reducing the noise radiated from the airflow inlet 21 of the fan 2, and improving the quietness and comfort of the clothing processing device in actual use.

[0051] In a specific application, the sound absorbing member 14 can be a sound absorbing cotton with a high effective frequency, and can absorb high-frequency noise with a frequency greater than 1600 Hz. The sound absorbing member 14 is arranged in a shape matching the body, and has a hollow structure inside, so that the body 1a can be completely located in the internal space of the sound absorbing member 14. The annular flow channel is formed by the combination of the outer surface of the body and the inner surface of the sound absorbing member 14, and the partitioning effect of the partition.

[0052] like Figure 4 and Figure 5 As shown, as the main body 1a (refer to Figure 2 ) is a first implementation method, the body 1a can be configured to include a cylinder 11a and a baffle 12a. The cylinder 11a includes a side wall 111a, and a channel connecting the two ends of the cylinder 11a is formed inside the side wall 111a. The baffle 12a is arranged in the channel to separate the channel into a first cavity 12 and a second cavity 13, so that the airflow cannot pass directly in the channel. The partition 13a is arranged on the outer surface of the side wall 111a and extends outward to form an annular flow channel 15a (refer to Figure 3). Then, combined with the inner surface of the sound absorbing member 14, the main propagation path of the sound wave is along the extension direction of the annular flow channel 15a, thereby increasing the contact area and contact time between the noise and the sound absorbing member 14. In addition, a first opening 113a connected to the first cavity 12 and a second opening 114a connected to the second cavity 13 are also provided on the side wall 111a. The first opening 113a and the second opening 114a are respectively connected to the annular flow channel 15a. In this way, when the first cavity 12 is connected to the air flow inlet 21 of the fan 2, the propagation path of the noise is: first, the noise enters the first cavity 12, then enters the annular flow channel 15a from the first opening 113a, propagates in the annular flow channel 15a to the position of the second opening 114a, then enters the second cavity 13 from the second opening 114a, and finally is discharged. After the noise propagates through this path, it is absorbed by the sound absorbing member 14, and the intensity is reduced, achieving a good noise reduction effect.

[0053] In the above, the baffle 12a is arranged in the channel, and the surface of the baffle 12a facing the length direction of the cylinder 11a can be a plane or a curved surface. In the case of a plane, the angle between the plane and the axis of the cylinder 11a can be greater than 0 degrees and less than or equal to 90 degrees. Preferably, the baffle 12a extends in a direction perpendicular to the length of the cylinder 11a to block the channel, that is, the surface of the baffle 12a includes a plane perpendicular to the length direction of the cylinder 11a, and this arrangement is simple and convenient.

[0054] like Figure 4 and Figure 6 As shown, in order to extend the path of noise propagation, the partition 13a is configured to include a first partition 131a and a second partition 132a spaced apart along the length direction of the cylinder 11a, a first annular flow channel 151a is formed between the first partition 131a and one end of the cylinder 11a close to the first partition 131a, a second annular flow channel 152a is formed between the second partition 132a and the other end of the cylinder 11a, and a connecting flow channel 161a is formed between the first partition 131a and the second partition 132a, and the connecting flow channel 161a is used to connect the first annular flow channel 151a and the second annular flow channel 152a. The first opening 113a is located in the first annular flow channel 151a, and the second opening 114a is located in the second annular flow channel 152a. In this configuration, after the noise is transmitted to the first annular flow channel 151a, it enters the second annular flow channel 152a through the connecting flow channel 161a. In this way, the propagation path of the noise can be further extended to increase the contact area and contact time with the sound absorbing member 14, thereby improving the sound absorption and noise reduction effect.

[0055] Due to the arrangement of the first partition 131a and the second partition 132a, the first annular flow channel 151a and the second annular flow channel 152a formed on the cylinder 11a can be spiral, circumferentially distributed and circular, corrugated, etc., or a combination of the above shapes, and then the first annular flow channel 151a and the second annular flow channel 152a are connected through the connecting flow channel 161a. In the present embodiment, the first partition 131a and the second partition 132a both extend perpendicular to the length direction of the cylinder and are arranged in parallel, so that the annular flow channel 15a becomes a circumferential flow channel. That is, the first annular flow channel 151a and the second annular flow channel 152a are circumferentially distributed on the cylinder 11a and are parallel to each other. At the same time, two spacers can be arranged between the first partition 131a and the second partition 132a (refer to Figure 6 ), one end of the two diaphragms 110a is connected to the first partition 13a, and the other end is connected to the second partition 13a, and the two diaphragms 110a are arranged at a distance, so as to form a connecting flow channel 161a between the two diaphragms 110a. Figure 5 As shown, in the embodiment of the present invention, it is preferred to arrange the connecting flow channel 161a along the length direction of the cylinder 11a.

[0056] In the actual noise reduction process, the noise will not only follow the main propagation path (refer to Figure 7 ): that is, first entering the first cavity 12, then entering the first annular flow channel 151a through the first opening 113a, then entering the second annular flow channel 152a through the connecting flow channel 161a, then entering the second cavity 13 through the second opening 114a, and finally being discharged; some noise is also propagated along the secondary propagation path: that is, after entering the first annular flow channel 151a, the noise passes through the holes on the first partition 131a and the second partition 132a respectively and enters the second annular flow channel 152a, then enters the second cavity 13 through the second opening 114a, and finally is discharged. Therefore, the existence of the secondary propagation path can effectively reduce the medium and low frequency noise in the noise.

[0057] like Figure 5 and Figure 6 As shown, the body 1a further includes a bottom plate 17a and a top plate 18a, the bottom plate 17a is arranged at one end of the cylinder 11a, and the top plate 18a is arranged at the other end of the cylinder 11a, wherein the bottom plate 17a and the first partition 131a form a first annular flow channel 151a, and the top plate 18a and the second partition 132a form a second annular flow channel 152a. In this way, the first annular flow channel 151a and the second annular flow channel 152a have good integrity, which facilitates the propagation of sound waves in the first annular flow channel 151a and the second annular flow channel 152a without arbitrary dispersion, which is conducive to increasing the contact time between the sound wave and the sound absorbing member 14 and improving the noise reduction effect.

[0058] Specifically, Figure 6 As shown, a plurality of through holes 19a are provided on the bottom plate 17a and / or the top plate 18a to reduce noise. In this way, the holes on the first partition 131a and the second partition 132a can be processed through the bottom plate 17a or the top plate 18a, thereby improving the convenience of processing and manufacturing.

[0059] like Figure 8 and Fig. 9 As shown, as a second implementation of the main body, the main body 1b can be configured to include a support rod 11b, a first connector 12b, a second connector 13b and an air pipe 14b. The support rod 11b is a long rod-shaped member that provides support for the overall structure. The first connector 12b is connected to one end of the support rod 11b, and a first cavity 12 is formed inside; the second connector 13b is connected to the other end of the support rod 11b, and a second cavity 13 is formed inside; and the air pipe 14b is non-enclosed, including a tube wall 141b, and a through groove 142b connected to the interior is opened on the tube wall 141b, and the through groove 142b extends along the length direction of the air pipe 14b. The portion of the air pipe 14b with the through groove 142b is directed toward the sound absorbing member 14, and the sound absorbing member 14 constitutes the outer wall surface of the non-enclosed air pipe 14b, and is combined with the air pipe 14b to form an annular flow channel 15b. One end of the air pipe 14b is connected to the first connector 12b and communicates with the first cavity 12, and the other end of the air pipe 14b is connected to the second connector 13b and communicates with the second cavity 13. In the actual setting, the partition is a tube wall 141b, that is, the tube wall 141b has a plurality of through holes 143b. In this way, when the first connector 12b is connected to the air flow inlet 21 of the fan 2, the noise can enter from the first cavity 12 on the first connector 12b, and then be transmitted along the annular flow channel 15b to the second cavity 13 on the second connector 13b, and finally discharged. When the second connector 13b is connected to the air inlet 21 of the fan 2, the noise can enter from the second cavity 13 on the second connector 13b, and then be transmitted along the annular flow channel 15b to the first cavity 12 on the first connector 12b, and finally be discharged. In this arrangement, the annular flow channel 15b has a long path, and the noise has a large contact area with the sound absorbing member 14 during the process of propagating along the path, and the purpose of noise reduction is achieved by the continuous absorption of noise by the sound absorbing member 14.

[0060] Since there are multiple through holes 143b on the pipe wall 141b, in the actual noise reduction process, in addition to being transmitted along the above-mentioned path, some noise will also be transmitted up and down through the through holes 143b when propagating along the annular flow channel 15b. A part of the noise will be absorbed and reduced by the through holes 143b, and the other part will still return to the annular flow channel 15b and be subjected to noise reduction in the subsequent propagation process. Those skilled in the art should know that the two ends of the above-mentioned middle support member refer to one end of the support member close to the fan 2 and one end away from the fan 2 in the state after assembly. Therefore, the two ends of the air supply pipe 14b refer to one end for connection with the airflow inlet 21 of the fan 2 and one end for the final discharge of the sound in the use state.

[0061] like Fig.10 As shown in FIG. 1 , as a third implementation of the body, the body 1c can be configured to include a first noise reduction unit 11c and a second noise reduction unit 12c that are spliced ​​together, the first cavity 12 is formed on the first noise reduction unit 11c, the second cavity 13 is formed on the second noise reduction unit 12c, and a partition is provided on the first noise reduction unit 11c and / or the second noise reduction unit 12c. The first noise reduction unit 11c and the second noise reduction unit 12c are spliced ​​together to form the body 1c, the sound absorbing member 14 is sleeved on the outside of the body 1c, and combined with the partition to form an annular flow channel 15c between the body 1c and the sound absorbing member 14 (refer to FIG. 1 ). Fig.13 ). By adopting the main body 1c to be formed by combining two noise reduction monomers that can be spliced ​​to each other, the production and manufacturing are convenient, and the overall assembly is also convenient.

[0062] like Fig.11 and Fig.13 As shown, the first noise reduction unit 11c includes a first noise reduction tube 111c and a first partition plate 112c. The first noise reduction tube 111c includes a first side wall 1111c, and a first channel connecting the two ends of the first noise reduction tube 111c is formed inside the first side wall 1111c. The first partition plate 112c is arranged in the first channel, and is used to partition the first channel to form a first cavity 12, so that the airflow cannot pass directly in the first channel. The first partition plate 112c can be arranged in a variety of ways. The surface of the first partition plate 112c facing the length direction of the first noise reduction tube 111c can be a plane or a curved surface. When the surface is a plane, the angle between the plane and the axis of the first noise reduction tube 111c can be greater than 0 degrees and less than or equal to 90 degrees. Preferably, the first partition plate 112c extends along a length direction perpendicular to the first noise reduction tube 111c to partition the first channel, that is, the surface of the first partition plate 112c includes a plane perpendicular to the length direction of the first noise reduction tube 111c. This arrangement is simple and convenient.

[0063] like Fig.11 and Fig.13As shown, the partition includes a first partition plate 113c, and the first partition plate 113c is connected to the outer surface of the first side wall 1111c and extends outward to form a first annular flow channel 151c with one end of the first noise reduction tube 111c. In this case, after the entire first noise reduction unit 11c is loaded into the shell 17, one end of the first noise reduction tube 111c abuts against the inner surface of the shell 17, and the first annular flow channel 151c is formed between the first partition plate 113c and the inner surface of the shell 17. Moreover, the first annular flow channel 151c is combined with the inner surface of the sound absorbing member 14 so that the main propagation path of the sound wave is along the extension direction of the annular flow channel, thereby increasing the contact area and contact time between the noise and the sound absorbing member 14. In addition, a first connecting port 117c (refer to Fig.14 ). This arrangement allows noise to flow between the first cavity 12 and the first annular flow channel 151c.

[0064] like Fig.12 and Fig.13 As shown, the second noise reduction unit 12c includes a second noise reduction tube 121c and a second partition plate 122c. The second noise reduction tube 121c includes a second side wall 1211c, and a second channel connecting the two ends of the second noise reduction tube 121c is formed inside the second side wall 1211c. The second partition plate 122c is arranged in the second channel to separate the second channel to form a second cavity 13, so that the airflow cannot pass directly in the second channel. The second partition plate 122c can be arranged in a variety of ways. The surface of the second partition plate 122c facing the length direction of the second noise reduction tube 121c can be a plane or a curved surface. When the surface is a plane, the angle between the plane and the axis of the first noise reduction tube 111c can be greater than 0 degrees and less than or equal to 90 degrees. Preferably, the second partition plate 122c extends along a length direction perpendicular to the second noise reduction tube 121c to separate the second channel, that is, the surface of the second partition plate 122c includes a plane perpendicular to the length direction of the second noise reduction tube 121c. This arrangement is simple and convenient.

[0065] like Fig.12 and Fig.13As shown, the partition also includes a second partition plate 123c, which is connected to the outer surface of the second noise reduction tube 121c and extends outward to form a third annular flow channel 153c with one end of the second noise reduction tube 121c; in this case, after the entire second noise reduction unit 12c is installed in the shell 17, one end of the second noise reduction tube 121c abuts against the inner surface of the shell 17, and the third annular flow channel 153c is formed between the second partition plate 123c and the inner surface of the shell 17. Moreover, the third annular flow channel 153c is combined with the inner surface of the sound absorbing member 14 so that the main propagation path of the sound wave is along the extension direction of the annular flow channel, thereby increasing the contact area and contact time between the noise and the sound absorbing member 14. In addition, a second connecting port 127c for connecting the second inner flow channel with the third annular flow channel 153c is provided on the second noise reduction tube 121c so that noise can flow between the second cavity 13 and the third annular flow channel 153c.

[0066] In the above structure, the first noise reduction tube 111c and the second noise reduction tube 21c are aligned to achieve splicing, and the stability after splicing can be maintained by gluing or mortise and tenon structure or fixing parts. After the splicing is completed, the first annular flow channel 151c and the third annular flow channel 153c are connected to ensure that sound waves can be transmitted to each other in the two flow channels.

[0067] Specifically, Fig.14 and Fig.15 As shown, after the splicing is completed, a second annular flow channel 152c is formed between the first partition plate 113c and the second partition plate 123c, and the first annular flow channel 151c and the second annular flow channel 152c are connected via the first connecting flow channel 161c, and the second annular flow channel 152c and the third annular flow channel 153c are connected via the second connecting flow channel 162c.

[0068] With such arrangement, the transmission path of the combined annular flow channel is long. In a specific application, when the first cavity 12 is connected to the airflow inlet 21 of the fan 2, the transmission path of the noise is as follows: the noise first enters the first cavity 12, then enters the first annular flow channel 151c from the first connecting port 117c, propagates in the first annular flow channel 151c and reaches the first connecting flow channel 161c, then enters the second annular flow channel 152c through the connection of the first connecting flow channel 161c, propagates in the second annular flow channel 152c, then propagates to the second connecting flow channel 162c, then enters the third annular flow channel 153c through the connection of the second connecting flow channel 162c, and when the noise propagates in the third annular flow channel 153c and reaches the position of the second connecting port 127c, it enters the second cavity 13 from the second connecting port 127c and is finally discharged. After the noise propagates through this path, it is continuously absorbed by the sound absorbing member 14 through continuous contact, and the intensity is reduced, thereby achieving a good noise reduction effect. Of course, if the second cavity 13 is connected to the airflow inlet 21 of the fan 2, the propagation path of the noise is opposite to the above propagation path, which will not be described in detail here. In the embodiment of the utility model, if Figure 1 As shown, the first cavity 12 is connected to the air flow inlet 21 of the fan 2.

[0069] like Fig.11 and Fig.14 As shown, the first noise reduction unit 11c also includes a first connecting member 114c, which includes a first fixed end 1141c and a first connecting end 1142c, the first fixed end 1141c is connected to the first partition plate 113c and / or the first side wall 1111c, and the first connecting end 1142c is used to connect with the second noise reduction unit 12c to achieve splicing. In addition, a second noise reduction unit 12c (see Fig.12 In this way, the first connection end 1142c is connected to the second noise reduction unit 12c, and the second noise reduction unit 12c is connected to the first connection structure 116c to achieve the splicing between the first noise reduction unit 11c and the second noise reduction unit 12c.

[0070] like Fig.12 and Fig.15As shown, the second noise reduction unit 12c also includes a second connecting member 124c, which includes a second fixed end 1241c and a second connecting end 1242c, the second fixed end 1241c is connected to the second partition plate 123c and / or the second side wall 1211c, and the second connecting end 1242c is used to connect with the first connecting structure 116c to achieve splicing. In addition, the second partition plate 123c is provided with a second connecting structure 126c for connecting with the first connecting end 1142c, so that the first noise reduction unit 11c and the second noise reduction unit 12c are spliced ​​by connecting the first connecting end 1142c with the second connecting structure 126c and the second connecting end 1242c with the first connecting structure 116c. Specifically, after the splicing is completed, a second annular flow channel 152c is formed between the first partition plate 113c and the second partition plate 123c, and a first connecting flow channel 161c (see Fig.14 ) are connected, and the second annular flow channel 152c and the third annular flow channel 153c are connected through the second connecting flow channel 162c.

[0071] To improve the stability of splicing, Fig.14 and Fig.15 As shown, two first connecting members 114c and two second connecting members 124c are arranged opposite to each other, and the two first connecting members 114c are arranged opposite to each other and spaced apart from each other, and the two second connecting members 124c are arranged opposite to each other and spaced apart from each other. The first fixed end 1141c on each first connecting member 114c is fixedly connected to the first partition plate 113c and the first side; the second fixed end 1241c on each second connecting member 124c is fixedly connected to the second partition plate 123c and the second side wall 1211c. In this way, the stability of the overall structure after splicing is ensured.

[0072] In this setting, Fig.14 As shown, the first communication channel 161c is formed between the two first connecting members 114c (refer to Fig.11), and a first connecting structure 16c for connecting the first connecting flow channel 161c with the second annular flow channel 152c is provided on at least one of the two first connecting members 114c, so that the noise propagating into the first connecting flow channel 161c can enter the second annular flow channel 152c through the connection of the first connecting structure 16c. In the specific setting, the first connecting flow channel 161c is formed between the first partition plate 113c and the second partition plate 123c, and the portion of the first partition plate 113c opposite to the first connecting flow channel 161c is set in a notch shape, so that the first annular flow channel 151c and the first connecting flow channel 161c can be directly connected; and the portion of the second partition plate 123c opposite to the first connecting flow channel 161c is set in a closed shape, so as to be able to block the noise from directly flowing to the third annular flow channel 153c, so that the noise can enter the second annular flow channel 152c through the first connecting structure 16c.

[0073] Likewise, Fig.15 As shown, the second communication channel 162c is formed between the two second connecting members 124c (refer to Fig.12 ), and a second connecting structure 17c for connecting the second connecting channel 162c with the second annular channel 152c is provided on at least one of the two second connecting members 124c, so that the noise propagating into the second annular channel 152c can enter the second connecting channel 162c through the connection of the second connecting structure 17c, and then flow into the third annular channel 153c. In the specific setting, the second connecting channel 162c is formed between the first partition plate 113c and the second partition plate 123c, and the portion of the second partition plate 123c opposite to the second connecting channel 162c is set in a notch shape, so that the second connecting channel 162c and the third annular channel 153c can be directly connected, and the portion of the first partition plate 113c opposite to the second connecting channel 162c is set in a closed shape, so as to block the noise from flowing into the first annular channel 151c, so that the noise can enter the third annular channel 153c through the second connecting channel 162c.

[0074] Specifically, the first connecting structure 16c and the second connecting structure 17c both include connecting holes and / or connecting gaps, and the connecting holes or connecting gaps can realize the connection between the first connecting channel 161c and the second annular channel 152c, and the connection between the second annular channel 152c and the second connecting channel 162c. That is, the appropriate setting mode of the first connecting structure 16c and the second connecting structure 126c can be selected according to the actual design requirements. Preferably, as Figure 6 and Figure 7As shown, in the embodiment of the utility model, the first connecting structure 16c and the second connecting structure 17c are both set as connecting notches, which are combined with the corresponding side walls to form a gap for noise to pass through. In addition, connecting notches are set on the two first connecting members 114c and the two second connecting members 124c. Thus, it is ensured that the noise can be transmitted smoothly. Through holes can also be opened on the first connecting member 114c and the second connecting member 124c, and the through holes themselves constitute the gap for noise to pass through without the need to form a gap in combination with the side walls.

[0075] With the above-mentioned structural design, the first annular flow channel 151c formed on the first noise reduction tube 111c and the third annular flow channel 153c formed on the second noise reduction tube 121c can be spiral, circumferentially distributed and circular, corrugated, etc., or a combination of the above shapes. It is preferred to adopt a setting method that can maximize the path of noise propagation along the main body 1c. The first annular flow channel 151c, the second annular flow channel 152c and the third annular flow channel 153c can also be connected through the second annular flow channel 152c, and is not limited to being achieved by setting the first connecting flow channel 161c and the second connecting flow channel 162c. In addition, the example used to explain the path of noise propagation is an example of when the first inner flow channel is connected to the airflow inlet 21 of the fan 2, and is not limited to propagation along this path.

[0076] like Fig.11 and Fig.12 As shown, the first noise reduction unit 11c also includes a first top plate 118c, which is arranged at one end of the first noise reduction tube 111c to extend outward relative to the outer surface of the first side wall 1111c. Thus, the first annular flow channel 151c can be formed between the first top plate 118c and the first partition plate 113c. Similarly, the second noise reduction unit 12c also includes a second top plate 128c, and the second noise reduction tube 121c is arranged at one end of the second noise reduction tube 121c to extend outward relative to the outer surface of the first side wall 1111c. Thus, the third annular flow channel 153c is formed between the second top plate 128c and the second partition plate 123c. This arrangement allows the first annular flow channel 151c and the third annular flow channel 153c to have better integrity, which facilitates the propagation of sound waves in the first annular flow channel 151c and the third annular flow channel 153c without arbitrary dispersion, which is beneficial to increase the sound waves and the sound absorbing member 14 (refer to Fig.13 ) contact time to improve the noise reduction effect.

[0077] like Fig.14 and Fig.15As shown, a third connection structure 119c is provided on the first top plate 118c, and the second connection end 1242c extends to connect with the third connection structure 119c; a fourth connection structure 129c is provided on the second top plate 128c, and the first connection end 1142c extends to connect with the fourth connection structure 129c. When splicing, the two first connection members 114c are respectively connected to the corresponding second connection structure 126c on the second partition plate 123c and the corresponding fourth connection structure 129c on the second top plate 128c; the two second connection members 124c are respectively connected to the corresponding first connection structure 116c on the first partition plate 113c and the corresponding third connection structure 119c on the first top plate 118c. Through such a setting, the stability of the structure after splicing can be further ensured.

[0078] With the above-mentioned structure, the second connecting ends 1242c on the two second connecting members 124c need to pass through the first annular flow channel 151c and connect to the first top plate 118c after extension. Therefore, in order to avoid the second connecting ends 1242c after extension blocking the noise propagation in the first annular flow channel 151c, a second connecting structure 17c is also provided on the second connecting ends 1242c after extension, so that the noise can pass through and propagate, ensuring that the noise propagates smoothly in the first annular flow channel 151c. Similarly, the first connecting ends 1142c on the two first connecting members 114c need to pass through the third annular flow channel 153c and connect to the second top plate 128c after extension. Therefore, in order to avoid the first connecting ends 1142c after extension blocking the noise propagation in the third annular flow channel 153c, a first connecting structure 16c is also provided on the first connecting ends 1142c after extension, so that the noise can pass through and propagate, ensuring that the noise propagates smoothly in the third annular flow channel 153c.

[0079] In the embodiment of the present invention, the first partition plate 113c and the second partition plate 123c are both set as perforated plates. Thus, under the noise reduction effect of each hole, a good noise reduction effect can be achieved for medium and low frequency (frequency between 100 and 1600 Hz). In this setting, during the noise reduction process, the noise will not only be transmitted along the main propagation path (refer to Figure 6 and Figure 7): That is, the noise first enters the first cavity 12, then passes through the first connecting port 117c, and then passes through the second connecting structure 17c on the extended second connecting end 1242c, enters the first annular flow channel 151c, and then propagates to the first connecting flow channel 161c, and then passes through the first connecting structure 16c and enters the second annular flow channel 152c to propagate, and after propagating to the second connecting structure 17c located in the second annular flow channel 152c, passes through the second connecting structure 17c at this position and enters the second connecting flow channel 162c, and then propagates to the third annular flow channel 153c. The noise propagates in the third annular flow channel 153c, and when it reaches the first connecting structure 16c on the extended first connecting end 1142c, it passes through the first connecting structure 16c at this position, and then enters the second cavity 13 from the second connecting port 127c, and is finally discharged. In the actual propagation process, in addition to propagating along the main path, some noise also propagates along the secondary propagation path: that is, the noise enters the first cavity 12, then passes through the first connecting port 117c, and then passes through the second connecting structure 17c on the extended second connecting end 1242c, enters the first annular flow channel 151c, then passes through the hole on the first partition plate 113c to enter the second annular flow channel 152c, and then passes through the hole on the second partition plate 123c to enter the third annular flow channel 153c, and when reaching the first connecting structure 16c on the extended first connecting end 1142c, passes through the first connecting structure 16c at this position, and then enters the second cavity 13 through the second connecting port 127c, and finally is discharged. The existence of this secondary propagation path can effectively eliminate the low- and medium-frequency noise in the noise.

[0080] When the noise enters the main body 1c, it will not be completely propagated along the above-mentioned main propagation path and secondary propagation path, and part of the noise will be directly propagated upward through the middle partition plate. Figure 4 As shown, the muffler is formed by splicing the first noise reduction unit 11c and the second noise reduction unit 12c. Therefore, the first partition board 112c and the second partition board 122c are respectively formed in the body 1c. Through the double-layer sound insulation structure, the noise reduction performance is greatly improved. In addition, the noise reduction effect can be improved by respectively arranging the sound absorbing member 14 on the first partition board 112c and the second partition board 122c.

[0081] like Fig.11 and Fig.12As shown, the body 1c also includes a reinforcing rib 18c, and a plurality of reinforcing ribs 18c are arranged at intervals on the first partition plate 113c and the second partition plate 123c. Since the sound absorbing member 14 is made of soft material, it will be deformed when it is sleeved on the outside of the body 1c, and when it sinks into the annular flow channel, it will cause the problem of blocking the airflow. Therefore, by providing the reinforcing rib 18c, it is used to support the sound absorbing member 14, so that the sound absorbing member 14 will not sink into the annular flow channel, ensuring the smoothness of airflow transmission.

[0082] In order to improve the smoothness of noise entering into or passing out of the main body 1c, the entrances and exits for noise entry or exit on the first noise reduction tube 111c and the second noise reduction tube 121c are preferably set to a shape similar to an arc surface, which can guide the propagation of airflow and facilitate the passage and propagation of airflow.

[0083] Specifically, Fig.15 As shown, a plurality of through holes 9c are provided on the first top plate 118c and / or the second top plate 128c to reduce noise. In this way, the holes on the first partition plate 113c can be processed through the first top plate 118c and the holes on the second partition plate 123c can be processed through the second top plate 128c to meet manufacturing requirements.

[0084] In this embodiment, the first connection structure 116c, the second connection structure 126c, the third connection structure 119c and the fourth connection structure 129c are preferably all configured as connection grooves. When connecting, the first connection member 114c and the second connection member 124c are correspondingly inserted into the corresponding connection grooves to achieve splicing and fixing, which is convenient to connect and has good stability.

[0085] In this embodiment, refer to Fig.13 The muffler device further includes a shell 17 and a cover plate 18. The shell 17 is a hollow structure, which is used to be mounted on the outside of the sound absorbing member 14. The shell 17 is provided with an installation opening for the sound absorbing member 14 to be installed. After the body 1c is installed in the sound absorbing member 14, the sound absorbing member 14 is installed in the shell 17 through the installation opening, and then the cover plate 18 is connected to the shell 17 to cover the installation opening of the shell 17, thereby realizing the overall assembly of the muffler device.

[0086] According to the actual connection method with fan 2, such as Figure 4 As shown, an air inlet hole 171 is provided on the shell 17 for noise to enter the first cavity 12, and an air outlet hole 181 is provided on the cover plate 18 for the sound after noise reduction to be discharged, and the main body 1c is cylindrical, so the air inlet hole 171, the air outlet hole 181 and the main body 1c can be kept in a coaxial arrangement.

[0087] As another assembly implementation manner of the sound-absorbing member, the sound-absorbing member 14 may be integrated into the shell 17 , or the sound-absorbing member 14 may be fixedly connected to the shell 17 , for example, glued to the shell 17 .

[0088] Specifically, when the partition or partition plate is used to reduce the medium and low frequency noise, its aperture, perforation ratio, and cavity height have the following preferred values: that is, within the range allowed by the volume, the larger the size of the body in the length direction, the better, generally not less than 20mm. Under the requirements of processing and noise reduction, the aperture is between 2 and 6mm, because too small an aperture will increase the difficulty of processing, and too large an aperture will reduce the noise reduction effect of the partition or partition plate. The perforation rate is set between 5% and 25%. Too small a perforation rate will make the sound waves rarely pass through the small holes, but only along the main propagation path, so that it will not play a role in reducing the noise of the medium and low frequencies, while too high a perforation rate will make the sound waves propagate more through the secondary propagation path, which reduces the contact area between the sound waves and the sound absorbing parts, thereby reducing the high-frequency noise reduction effect. After the above variables are determined, the wall thickness of the partition or partition plate can also be selected by acoustic simulation means, which should generally be between 1 and 3mm.

[0089] The noise reduction device provided by the present invention adopts a method of providing a first cavity and a second cavity that are not directly connected at both ends of the body, and a sound absorbing member is sleeved on the outside of the body, and an annular flow channel is formed between the body and the sound absorbing member, and the annular flow channel is connected to the first cavity and the second cavity respectively. Since the noise reduction effect of the sound absorbing member is positively correlated with the contact area between the noise and the sound absorbing member, the setting of the annular flow channel makes the propagation path of the noise in the noise reduction device longer, and basically propagates along the maximum radial point of the noise reduction device, thereby increasing the contact area between the noise and the sound absorbing member, which is more conducive to the noise reduction effect of the sound absorbing member and the reduction of high-frequency noise. Combined with the setting of the perforated plate structure, it can further reduce the noise of medium and low frequencies, achieve a good noise reduction function, and improve the comfort of users.

[0090] The embodiments of the present invention also provide a clothes processing device, such as a drum washing machine or a washer-dryer. Figure 1The clothing processing device includes the above-mentioned noise reduction device, a fan 2 and a fan sound insulation component 3. The fan sound insulation component 3 is sleeved on the outside of the fan 2 to reduce the noise generated by the fan 2. Therefore, the silencer is arranged at the airflow inlet 21 of the fan sound insulation component 3, and can be connected to the fan sound insulation component 3 by gluing, screwing, snapping, etc., and the connection method is various. The fan sound insulation component 3 is arranged to block the noise radiated outward from the outer casing of the fan 2 when the fan 2 is running. After the noise reduction treatment of the fan sound insulation component 3, a part of the noise generated by the operation of the fan 2 will still be radiated outward from the airflow inlet 21 of the fan sound insulation component 3. Therefore, by arranging the noise reduction device at the airflow inlet 21 of the fan sound insulation component 3, after the noise reduction treatment of the noise reduction device, the noise generated during the operation of the fan 2 can be effectively reduced, and the comfort of using the clothing processing device can be improved.

[0091] Preferably, the clothes processing device is a clothes washing device or a clothes washing and drying device, and the fan 2 is used to blow air to the washing water to drive the washing water to flow, so as to achieve the purpose of rolling the washing clothes. Of course, the clothes processing device can also be a clothes drying device or a clothes washing and drying device, and the fan 2 is used to blow air to blow the generated dry gas to the wet clothes after washing, so as to dry the clothes with the moisture on the clothes.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A noise reduction device, characterized in that: include: A body, wherein two ends of the body are provided with a first cavity and a second cavity that are not directly connected; A separator, arranged on the outer surface of the body; A sound absorbing member, sleeved on the outside of the body; Wherein, the partition is a perforated plate, a flow channel is formed between the partition and the sound absorbing member, and the flow channel is communicated with the first cavity and the second cavity respectively; Wherein, the flow channel comprises an annular flow channel extending along the outer surface of the body, the flow channel extends between the inner surface of the sound absorbing member and the outer surface of the body, and under the partition of the partition, the sound wave can travel one or more circles along the axial direction of the inner surface of the sound absorbing member; The first cavity and the second cavity are arranged to be not directly connected, and the first cavity and the second cavity are connected through the flow channel, so that the noise can mainly enter from the first cavity, then propagate along the flow channel, and finally be discharged from the second cavity, rather than entering from the first cavity and then being directly discharged from the second cavity.

2. The noise reduction device according to claim 1, characterized in that The body comprises: The cylinder comprises a side wall, wherein a passage is formed inside the side wall to connect the two ends of the cylinder; a baffle, disposed in the channel, dividing the channel into the first cavity and the second cavity; Wherein, the partition is arranged on the outer surface of the side wall and extends outward to form the annular flow channel, and a first opening connected to the first cavity and a second opening connected to the second cavity are opened on the side wall, and the first opening and the second opening are respectively connected to the annular flow channel.

3. The noise reduction device according to claim 2, characterized in that: The partition includes a first partition and a second partition arranged at intervals along the length direction of the cylinder, a first annular flow channel is formed between the first partition and an end of the cylinder close to the first partition, a second annular flow channel is formed between the second partition and the other end of the cylinder, and a connecting flow channel connecting the first annular flow channel and the second annular flow channel is formed between the first partition and the second partition.

4. The noise reduction device according to claim 1, characterized in that: The body comprises: Support rods; A first connector, connected to one end of the support rod, forming the first cavity inside; A second connector, connected to the other end of the support rod, forming the second cavity inside; The air delivery pipe comprises a pipe wall, the pipe wall is provided with a through groove, and the through groove faces the sound absorbing member to form the annular flow channel; Wherein, the partition is the tube wall, one end of the gas pipe is connected to the first connector and communicated with the first cavity, and the other end of the gas pipe is connected to the second connector and communicated with the second cavity.

5. The noise reduction device according to claim 1, characterized in that: The body includes a first noise reduction unit and a second noise reduction unit spliced ​​to each other, the first cavity is formed on the first noise reduction unit, the second cavity is formed on the second noise reduction unit, and the partition is provided on the first noise reduction unit and / or the second noise reduction unit.

6. The noise reduction device according to claim 5, characterized in that: The first noise reduction unit includes: A first noise reduction tube, comprising a first side wall, wherein a first channel is formed inside the first side wall and communicates with two ends of the first noise reduction tube; a first partition plate, disposed in the first channel, and used to partition the first channel to form the first cavity; Wherein, the partition includes a first partition plate, which is connected to the outer surface of the first side wall and extends outward to form a first annular flow channel with one end of the first noise reduction cylinder, and the first noise reduction cylinder is provided with a first connecting port for connecting the first cavity with the first annular flow channel.

7. The noise reduction device according to claim 6, characterized in that: The second noise reduction unit includes: A second noise reduction tube, comprising a second side wall, wherein a second channel is formed inside the second side wall and communicates with two ends of the second noise reduction tube; a second partition plate, disposed in the second channel, and used to partition the second channel to form the second cavity; Among them, the partition also includes a second partition plate, which is connected to the outer surface of the second noise reduction cylinder and extends outward to form a third annular flow channel with one end of the second noise reduction cylinder. The second noise reduction cylinder is provided with a second connecting port for connecting the second cavity with the third annular flow channel.

8. The noise reduction device according to claim 7, characterized in that: A second annular flow channel is formed between the first partition plate and the second partition plate. The first annular flow channel and the second annular flow channel are connected via a first connecting flow channel, and the second annular flow channel and the third annular flow channel are connected via a second connecting flow channel.

9. The noise reduction device according to claim 8, characterized in that: The first noise reduction unit also includes: A first connecting member, comprising a first fixed end and a first connecting end, wherein the first fixed end is connected to the first partition plate and / or the first side wall, and the first connecting end is used to be connected to the second noise reduction unit to achieve splicing; Wherein, the first partition plate is provided with a first connection structure for connecting the second noise reduction unit.

10. The noise reduction device according to claim 9, characterized in that: The second noise reduction unit also includes: A second connecting member, comprising a second fixed end and a second connecting end, wherein the second fixed end is connected to the second partition plate and / or the second side wall, and the second connecting end is used to connect to the first connecting structure to achieve the splicing; Wherein, the second partition plate is provided with a second connection structure for connection with the first connection end.

11. The noise reduction device according to claim 9, characterized in that: Two first connecting members are arranged opposite to each other, the first communicating flow channel is formed between the two first connecting members, and at least one of the two first connecting members is provided with a first communicating structure for connecting the first communicating flow channel with the second annular flow channel.

12. The noise reduction device according to claim 10, characterized in that: Two second connecting members are arranged opposite to each other, the second communicating flow channel is formed between the two second connecting members, and at least one of the two second connecting members is provided with a second communicating structure for connecting the second communicating flow channel with the third annular flow channel.

13. The noise reduction device according to claim 6 or 9, characterized in that: The first noise reduction unit also includes: A first top plate, disposed at one end of the first noise reduction tube and extending outwardly relative to an outer surface of the first side wall; Wherein, the first top plate and the first partition plate form the first annular flow channel.

14. The noise reduction device according to claim 7 or 10, characterized in that: The second noise reduction unit also includes: A second top plate, disposed at one end of the second noise reduction tube to extend outwardly relative to an outer surface of the first side wall; Wherein, the second top plate and the second partition plate form the third annular flow channel.

15. The noise reduction device according to any one of claims 1 to 12, characterized in that: The noise reduction device also includes: A shell body, which is used to be sleeved on the outside of the sound absorbing member, and the shell body is provided with an installation opening for the sound absorbing member to be installed; A cover plate is used to be fixed to the shell to cover the installation opening.

16. A clothes processing device, characterized in that: include: A noise reduction device as claimed in any one of claims 1 to 15; Fan; The fan sound insulation component is sleeved outside the fan to reduce the noise generated by the fan, and the noise reduction device is arranged at the air flow inlet of the fan sound insulation component.

17. The clothes treating device according to claim 16, characterized in that: The clothes processing device is a clothes washing device or a clothes washing and drying device, and the fan is used to blow air into the washing water to wash the clothes.

18. The clothes treating device according to claim 16, characterized in that: The clothes processing device is a clothes drying device or a clothes washing and drying device, and the fan is used for blowing air to dry clothes.

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