Silent vibration-damping exhaust unit

Abstract

The application relates to the technical field of exhaust machines, in particular to a mute and vibration-reducing exhaust machine set which comprises an outer shell, the inner part of the outer shell is provided with a storage cavity, the storage cavity is a cavity penetrating through the bottom, the inner part of the outer shell is provided with an exhaust fan, the exhaust fan comprises a shell, a space is arranged between the outer wall of the shell and the inner wall of the outer shell; a connecting assembly which comprises a mounting plate, a connecting piece and a connecting plate, the mounting plate is installed on the outer wall of the shell, one end of the connecting piece is connected to the side of the mounting plate far from the shell, the connecting plate is arranged on the inner wall of the outer shell, and the end of the connecting piece far from the mounting plate simultaneously penetrates through the connecting plate and the side wall of the outer shell; a damping sleeve is arranged on the end of the connecting piece close to the outer shell, the damping sleeve simultaneously penetrates through the connecting plate and the side wall of the outer shell, a first rubber pad is fixed to the outer wall of the damping sleeve, and the first rubber pad is located between the outer wall of the connecting plate and the inner wall of the outer shell; and a damping assembly which is arranged between the mounting plate and the connecting plate and can reduce the vibration transmission of the exhaust machine to the ceiling.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of exhaust machines, in particular to a mute and vibration-reducing exhaust machine set. BACKGROUND

[0002] The exhaust machine is one of common devices for ventilation, which is usually arranged in a bathroom to extract the air inside the bathroom, and then discharges the air to the outdoor to replace the new air, so that the exhaust machine can effectively improve the indoor air quality, adjust the indoor temperature and remove harmful gas and odor.

[0003] The exhaust machine comprises a shell, a motor and a fan blade, the motor and the fan blade are installed in the shell, the motor rotates to drive the fan blade to rotate, the rotation of the blade generates centrifugal force to diffuse the air outward to form an air flow, and at the same time, due to the movement of the air flow, the air in the bathroom is affected by the negative pressure of the exhaust fan and is sucked into the exhaust fan, and then is discharged to the outdoor through an exhaust port.

[0004] At present, the top surface of the shell is usually installed on the top surface of the ceiling, and during the rotation of the fan blade driven by the motor, vibration occurs, which is then transmitted to the ceiling through the shell, thereby affecting the residents upstairs. SUMMARY

[0005] In order to reduce the vibration of the exhaust machine transmitted to the ceiling, the application provides a mute and vibration-reducing exhaust machine set.

[0006] The mute and vibration-reducing exhaust machine set provided by the application adopts the following technical scheme:

[0007] The mute and vibration-reducing exhaust machine set comprises:

[0008] The shell has a storage cavity inside, and the storage cavity is a cavity penetrating through the bottom;

[0009] The exhaust fan is arranged in the shell and located in the storage cavity, and comprises a shell and a fan blade, the shell has an installation cavity inside, the fan blade is installed in the shell, and a space is arranged between the outer wall of the shell and the inner wall of the shell;

[0010] The connecting assembly comprises a mounting plate, a connecting piece and a connecting plate, the mounting plate is mounted on the outer wall of the shell, one end of the connecting piece is connected to the side of the mounting plate away from the shell, the connecting plate is arranged on the inner wall of the shell, and the end of the connecting piece away from the mounting plate penetrates through the connecting plate and the side wall of the shell at the same time;

[0011] The damping sleeve is arranged on the outer wall of the connecting piece close to the shell, and the damping sleeve passes through the connecting plate and the side wall of the shell at the same time.

[0012] The damping assembly is arranged between the mounting plate and the connecting plate.

[0013] By adopting the above technical scheme, the space is arranged between the outer wall of the shell and the inner wall of the shell, so that the contact between the shell and the shell can be reduced, and the vibration generated by the rotation of the fan blade can be reduced. The vibration is transmitted to the shell, and correspondingly, the damping sleeve passes through the connecting plate and the side wall of the shell at the same time, and under the action of the damping sleeve, the outer wall of the connecting piece can be directly contacted with the connecting plate and the shell. When the connecting piece is vibrated, under the action of the damping sleeve, the damping sleeve has high elasticity, and the damping sleeve will deform when subjected to external force, and can restore to the original shape after the external force is removed, so that the damping sleeve can absorb and release impact energy. The damping sleeve can consume energy in the deformation and recovery process, so as to reduce the transmission of vibration, and under the action of the first rubber pad, when the connecting plate is vibrated, the vibration of the connecting plate is transmitted to the shell. Therefore, when the fan blade rotates, the vibration can be reduced, so as to reduce the vibration transmitted to the ceiling.

[0014] Preferably, the outer wall of the connecting piece is sleeved with a nut, one side of the nut is pressed against the outer wall of the shell, and the outer wall of the damping sleeve is fixed with a second rubber pad, and the second rubber pad is located between the outer wall of the shell and the inner wall of the nut.

[0015] By adopting the above technical scheme, under the action of the nut, the connection stability between the connecting plate and the shell can be improved, and the connection between the connecting plate and the shell can be reinforced. Under the action of the second rubber pad, when the nut is vibrated, the vibration of the nut is transmitted to the shell.

[0016] Preferably, the damping assembly comprises a damping seat, and the damping seat is installed between the mounting plate and the connecting plate.

[0017] By adopting the above technical scheme, under the action of the damping seat, the shell vibrates to drive the mounting plate to vibrate. When the vibration of the mounting plate is transmitted to the damping seat, the damping seat has elasticity, and the damping seat consumes energy in the deformation and recovery process, so as to reduce the transmission of vibration. Correspondingly, the vibration of the connecting plate is consumed by the damping seat, so as to reduce the transmission of vibration of the connecting plate to the shell, and further reduce the transmission of vibration to the ceiling.

[0018] Preferably, the damping seat is internally provided with a storage groove, and the damping seat is internally provided with two inductors located in the storage groove.

[0019] By adopting the above technical scheme, under the action of the damping seat, the vibration in the shell can be slowed down to be transmitted to the outer shell, so that the user is less likely to observe the vibration in the shell through the outer shell. When the fan blades in the shell fail to rotate, the vibration will be intensified, and the user is less likely to observe the condition inside the shell through the outer shell, so that the user is less likely to know the failure in the first time. Under the action of the two inductors, when the vibration occurs, the horizontal distance between the two inductors will be shortened in the compression process of the damping seat, or the two inductors will move up and down staggered, so that the distance between the two inductors will be increased. Therefore, the distance between the two inductors can reflect the vibration condition caused by the rotation of the fan blades in the shell.

[0020] Preferably, the middle part of the mounting plate protrudes outward, and the connecting piece is located on the protruding part of the mounting plate.

[0021] By adopting the above technical scheme, the middle part of the mounting plate protrudes outward, so that the contact area between the mounting plate and the shell can be reduced, thereby reducing the area of the vibration of the shell transmitted to the mounting plate. At the same time, the direct contact of the connecting part with the vibration can also be reduced, thereby reducing the vibration of the connecting piece.

[0022] Preferably, the middle part of the connecting plate protrudes to one side of the outer shell, and the protruding part of the connecting plate abuts against the side wall of the first rubber pad.

[0023] By adopting the above technical scheme, the protruding part of the connecting plate abuts against the side wall of the first rubber pad, so that the contact area between the connecting plate and the inner wall of the first rubber pad can be reduced, thereby reducing the area of the vibration of the connecting plate transmitted to the first rubber pad. Then, the first rubber pad consumes the vibration, thereby reducing the vibration transmitted to the outer shell.

[0024] Preferably, the bottom surface of the outer shell is provided with a base, and the base is installed with a lamp panel on the bottom surface.

[0025] By adopting the above technical scheme, the bottom surface of the base is installed with a lamp panel, so that the application can provide lighting while solving the exhaust function, thereby improving the applicability of the exhaust machine. At the same time, the functions required in the bathroom are combined together, so that the installation space can be saved. After the airflow enters the installation cavity through the top of the lamp panel from the plurality of air holes, the airflow is discharged from the exhaust port, so that the heat emitted by the lamp panel can be taken away, thereby achieving the heat dissipation effect of the lamp panel, thereby prolonging the service life of the lamp panel.

[0026] Preferably, the shell is installed with a sound device on the bottom surface.

[0027] By adopting the above technical solution, a speaker is installed on the bottom of the casing, which increases the function of playing music and further improves the applicability of the exhaust machine.

[0028] Preferably, the outer wall of the base is provided with a vent hole, which communicates with the mounting cavity.

[0029] By adopting the above technical solution, the vent is connected to the mounting cavity, and the vent connects the outside to the mounting cavity. External airflow can flow into the mounting cavity through the vent and then be discharged from the exhaust port. At the same time, the sound of the speaker is transmitted through the vent.

[0030] Preferably, the outer wall of the housing is provided with an exhaust assembly, which is used to exhaust the gas drawn into the mounting cavity.

[0031] By adopting the above technical solution, the gas drawn into the installation cavity can be discharged under the action of the exhaust component.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. A gap is provided between the outer wall of the housing and the inner wall of the outer shell, thereby reducing the contact between the housing and the outer shell and reducing the transmission of vibration generated by the rotation of the fan blades to the outer shell. Correspondingly, the damping sleeve passes through both the connecting plate and the side wall of the outer shell. Under the action of the damping sleeve, the direct contact between the outer wall of the connector and the connecting plate and the outer shell is reduced. When the connector is subjected to vibration, the damping sleeve has high elasticity and deforms under the action of external force. After the external force is removed, it can return to its original shape, thereby absorbing and releasing impact energy. The damping sleeve can consume energy during deformation and recovery, thereby reducing the transmission of vibration. Under the action of the first rubber pad, when the connecting plate is subjected to vibration, the vibration of the connecting plate is reduced to the outer shell. Thus, when the fan blade vibrates during rotation, the vibration is reduced to the outer shell, thereby reducing the transmission of vibration to the ceiling.

[0034] 2, under the action of the damping seat, the vibration in the shell can be slowed down to the shell, so that the user is difficult to observe the vibration in the shell through the shell, and when the fan blade in the shell rotates failure, the vibration will be intensified, and the user is difficult to observe the condition inside the shell through the shell, so that it is difficult to know the failure in the first time, under the action of the two sensors, when the vibration occurs, the horizontal distance between the two sensors will be shortened in the process of compressing the damping seat, or the two sensors will move up and down staggered, so that the distance between the two sensors will increase, therefore, the distance between the two sensors can reflect the vibration of the fan blade rotation in the shell. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is the overall structure schematic diagram of the embodiment of the application.

[0036] Figure 2 is the plan view of the embodiment of the application.

[0037] Figure 3 is the cross-sectional view of the embodiment of the application.

[0038] Figure 4 is Figure 3 is the enlarged view of A in figure 6.

[0039] Figure 5 is the partial bottom view of the application.

[0040] Figure 6 is the cross-sectional view of the exhaust assembly in the embodiment of the application.

[0041] Explanation of reference signs: 1, shell; 11, storage cavity; 12, base; 2, exhaust fan; 21, shell; 22, fan blade; 23, mounting cavity; 3, connecting assembly; 31, mounting plate; 32, screw; 33, connecting plate; 34, nut; 35, damping sleeve; 36, first rubber pad; 37, second rubber pad; 4, damping assembly; 41, first mounting seat; 42, second mounting seat; 43, damping seat; 431, storage groove; 5, sensor; 6, sound; 7, lamp plate; 8, exhaust assembly; 81, exhaust pipe; 82, sound absorbing layer; 83, connecting cloth. DETAILED DESCRIPTION

[0042] The following will be combined with the Figures 1-6 The application is further described in detail.

[0043] The embodiment of the application discloses a mute damping exhaust unit.

[0044] Reference Figure 1 and Figure 2The utility model provides a mute shock absorption exhaust unit, including the shell 1, the shell 1 inside has the article storage cavity 11, the article storage cavity 11 is the cavity of bottom through, be provided with the exhaust fan 2 in the shell 1, the exhaust fan 2 is located in the article storage cavity 11, and the exhaust fan 2 includes the casing 21 and the fan blade 22, and the casing 21 inside has the installation cavity 23, and the installation cavity 23 is the cavity of bottom through, and the fan blade 22 is installed in the casing 21, and the fan blade 22 is located the top of installation cavity 23, and the outer wall of casing 21 is provided with the spacing between the inner wall of shell 1, to reduce the contact between casing 21 and shell 1, reduce the vibration transmission to shell 1 due to the rotation of fan blade 22, to reduce the vibration transmission to the ceiling, and the sidewall of shell 1 is provided with the exhaust port, and the casing 21 one end extends to the sidewall of shell 1, and the casing 21 extension part is provided with the opening, and the opening is opposite the exhaust port, and gas can flow to the exhaust port through the opening and be discharged.

[0045] Refer to Figure 3 And Figure 4 The outer wall of casing 21 is provided with connecting assembly 3 between the inner wall of shell 1, and connecting assembly 3 includes mounting plate 31, connecting piece and connecting plate 33, in the embodiment of the application, mounting plate 31 and connecting plate 33 are circular plates, mounting plate 31 is fixed on the outer wall of casing 21, and the middle part of mounting plate 31 protrudes outward, to reduce the contact between mounting plate 31 and casing 21, in the embodiment of the application, connecting piece is screw 32, one end of screw 32 is fixed on the side, away from casing 21, of mounting plate 31, screw 32 is located on the protruding part of mounting plate 31, connecting plate 33 is arranged on the side of the inner wall of shell 1, and correspondingly, the middle part of connecting plate 33 protrudes to the side of shell 1, and the protruding part of connecting plate 33 is located on the inner wall of shell 1, to reduce the contact area between the inner wall of shell 1, one end of screw 32, away from mounting plate 31, simultaneously penetrates the protruding part of connecting plate 33 and the sidewall of shell 1, and the outer wall of screw 32 is provided with nut 34, and nut 34 is pressed against the outer wall of casing 21, to fixedly connect casing 21 and shell 1.

[0046] Screw 32 is provided with damping sleeve 35 on the end close to shell 1, and damping sleeve 35 simultaneously penetrates the sidewall of connecting plate 33 and shell 1, under the action of damping sleeve 35, the outer wall of screw 32 can not directly contact connecting plate 33 and shell 1, damping sleeve 35 is rubber sleeve, when screw 32 is vibrated, under the action of damping sleeve 35, damping sleeve 35 has high elasticity, damping sleeve 35 can deform under external force, and can restore to the original shape after the external force is removed, to enable damping sleeve 35 to absorb and release impact energy, and damping sleeve 35 can consume energy in the deformation and recovery process, to reduce the transmission of vibration.

[0047] Correspondingly, the outer wall of the damping sleeve 35 is fixed with a first rubber pad 36 and a second rubber pad 37. The first rubber pad 36 is located between the outer wall of the connecting plate 33 and the inner wall of the shell 1, and the second rubber pad 37 is located between the outer wall of the shell 1 and the inner wall of the nut 34. Under the action of the first rubber pad 36, when the connecting plate 33 is vibrated, the vibration of the connecting plate 33 is reduced to the shell 1. Correspondingly, under the action of the second rubber pad 37, when the nut 34 is vibrated, the vibration of the nut 34 is reduced to the shell 1. Thus, when the fan blade 22 vibrates during rotation, the vibration can be reduced to the shell 1, thereby reducing the vibration to the ceiling.

[0048] Referring to Figure 4 , a damping assembly 4 is arranged between the mounting plate 31 and the connecting plate 33. The damping assembly 4 includes a first mounting seat 41, a second mounting seat 42, and a damping seat 43. The mounting plate 31 is provided with a mounting groove on the side close to the connecting plate 33. One end of the first mounting seat 41 is inserted into the mounting groove. The first mounting seat 41 is provided with a storage cavity 11 at the end away from the mounting plate 31. The shape of the first mounting seat 41 is consistent with that of the second mounting seat 42. The mounting form between the second mounting seat 42 and the connecting plate 33 is consistent with that between the first mounting seat 41 and the mounting plate 31. In the embodiment, the storage cavity of the first mounting seat 41 corresponds to the storage cavity of the second mounting seat 42. A storage space is formed between the first mounting seat 41 and the second mounting seat 42. The damping seat 43 is located in the storage space. One end of the damping seat 43 is inserted into the storage cavity of the first mounting seat 41, and the other end of the damping seat 43 is inserted into the storage cavity of the second mounting seat 42. Thus, the damping seat 43 is clamped between the first mounting seat 41 and the second mounting seat 42, so that the damping seat 43 is installed between the mounting plate 31 and the connecting plate 33.

[0049] In the embodiment, the damping seat 43 is a rubber seat. Under the action of the damping seat 43, the shell 21 vibrates and drives the mounting plate 31 to vibrate. When the vibration of the mounting plate 31 is transmitted to the damping seat 43, the damping seat 43 has elasticity. The damping seat 43 consumes energy in the process of deformation and recovery, thereby reducing the vibration transmitted to the connecting plate 33. Correspondingly, the vibration received by the connecting plate 33 is consumed by the damping seat 43, which can reduce the vibration transmitted to the shell 1, thereby reducing the vibration transmitted to the ceiling.

[0050] Referring to Figure 4 , the damping seat 43 is internally provided with a storage groove 431. The damping seat 43 is embedded with a sensor 5. The sensor 5 is located in the storage groove 431. There are two sensors 5, which are located at both ends of the storage groove 431. The output ends of the two sensors 5 are oppositely arranged, so that the two sensors 5 can sense the distance between each other, and thus the vibration in the shell 21 can be detected.

[0051] The damping seat 43 can slow down the vibration transmission in the shell 21 to the outer shell 1, so that the user is less likely to observe the vibration in the shell 21 through the outer shell 1. When the fan blade 22 in the shell 21 fails to rotate, the vibration will intensify, and the user is less likely to observe the inside of the shell 21 through the outer shell 1, so that the user is less likely to know the failure in the first time. Under the action of the two sensors 5, one sensor 5 is located at one end of the damping seat 43 close to the mounting plate 31, and the other sensor 5 is located at one end of the damping seat 43 close to the connecting plate 33. When the vibration occurs, the horizontal distance between the two sensors 5 will be shortened during the compression of the damping seat 43, or the two sensors 5 will move up and down staggered, so that the distance between the two sensors 5 will increase. Therefore, the distance between the two sensors 5 can reflect the vibration generated by the rotation of the fan blade 22 in the shell 21.

[0052] When the horizontal distance between the two sensors 5 is shortened by 5-8mm, or the distance between the two sensors 5 is increased by 5-8mm, and the duration is more than 3 seconds, the information will be fed back to the signal receiving device connected to the user, prompting the user that the vibration generated by the rotation of the fan blade 22 is larger and abnormal, which needs to be paid attention to. When the horizontal distance between the two sensors 5 is shortened by more than 8mm, or the distance between the two sensors 5 is increased by more than 8mm, and the duration is more than 3 seconds, the information will be fed back to the signal receiving device connected to the user, prompting the user that the abnormal vibration generated by the rotation of the fan blade 22 is more serious, which needs to be paid attention to or repaired, so as to reduce the situation that the user is less likely to detect the abnormality of the equipment.

[0053] Referring to Figure 2 , the damping seat 43 has a plurality of damping seats 43, and the plurality of damping seats 43 are distributed along the circumference of the mounting seat. Correspondingly, the connecting assembly 3 has a plurality of connecting assemblies 3, and the plurality of connecting assemblies 3 are distributed along the outer wall of the shell 21, so as to further improve the connection stability between the shell 21 and the outer shell 1 and reduce the disconnection between the shell 21 and the outer shell 1.

[0054] The outer shell 1 is fixedly connected with a base 12, and the outer wall of the base 12 is provided with a plurality of air holes. The plurality of air holes are arranged along the outer wall of the base 12. The air holes are in communication with the mounting cavity 23, and the air holes communicate the outside with the mounting cavity 23. The external airflow can flow into the mounting cavity 23 through the air holes and then be discharged from the air outlet.

[0055] Referring to Figure 3 and Figure 5The sound of the sounder 6 is transmitted through the plurality of air holes, and the lamp panel 7 is installed on the bottom surface of the base 12 and seals the bottom of the storage cavity 11. Therefore, the ventilation function is realized, and the functions of playing music and lighting are simultaneously achieved, the applicability of the ventilator is improved, the functions required in the bathroom are combined, the installation space is saved, and after the airflow enters from the plurality of air holes, the airflow enters the installation cavity 23 through the top of the lamp panel 7 and is then discharged from the air outlet, so that the heat emitted by the lamp panel 7 can be taken away, the heat dissipation effect of the lamp panel 7 is achieved, and the service life of the lamp panel 7 is improved.

[0056] With reference to Figure 6 The outer wall of the shell 1 is provided with the ventilation assembly 8, the ventilation assembly 8 comprises the ventilation pipe 81, the sound-absorbing layer 82 and the connecting cloth 83, the ventilation pipe 81 is aligned with the air outlet, one end of the ventilation pipe 81 is inserted into the opening of the shell 21, and the ventilation pipe 81 is fixed to the inner wall of the shell 21. In the embodiment, the sound-absorbing layer 82 is a sound-absorbing cotton layer, and according to different scenes, the sound-absorbing layer 82 can also be a foamed plastic layer or a glass fiber layer, so that the sound-absorbing layer 82 finally absorbs the sound wave energy propagating in the cavity of the ventilation pipe 81, converts the sound wave into tiny vibration or heat energy, thereby weakening the propagation of sound and achieving the effect of noise reduction. The connecting cloth 83 is sewn to the inner wall of the sound-absorbing layer 82, and the sound-absorbing layer 82 is located between the ventilation pipe 81 and the connecting cloth 83, so that the sound-absorbing layer 82 is wrapped therein, and the situation that the sound-absorbing layer 82 is loose and falls off is reduced.

[0057] The inner wall of the connecting cloth 83 is provided with a flow hole penetrating the sound-absorbing layer 82, external airflow flows into the installation cavity 23 through the air hole, and then the airflow enters the cavity of the connecting cloth 83 from the air outlet. Under the action of the flow hole, the sound-absorbing layer 82 can reduce the noise generated when the airflow passes through the connecting cloth 83 during the process of the airflow passing through the cavity of the connecting cloth 83. When the sounder 6 is in an open state, the influence of the noise generated when the airflow is discharged on the sounder 6 can be reduced, so that the user can better hear the sound emitted by the sounder 6.

[0058] The above are preferred embodiments of the present application, and the embodiments are only an explanation of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made according to the structure, shape and principle of the present application should be covered in the protection scope of the present application.

Claims

1. A quiet and vibration-damped exhaust unit, characterized in that Include: The shell (1): the shell (1) has a storage cavity (11) inside, the storage cavity (11) is a cavity with a bottom; The exhaust fan (2): the exhaust fan (2) is arranged inside the shell (1), the exhaust fan (2) is located in the storage cavity (11), the exhaust fan (2) includes a shell (21) and a fan blade (22), the shell (21) has an installation cavity (23) inside, the fan blade (22) is installed in the shell (21), the shell (21) outer wall and the inner wall of the shell (1) are provided with a spacing; The connecting assembly (3): the connecting assembly (3) includes a mounting plate (31), a connecting piece and a connecting plate (33), the mounting plate (31) is mounted on the outer wall of the shell (21), one end of the connecting piece is connected to the side of the mounting plate (31) away from the shell (21), the connecting plate (33) is arranged on the inner wall of the shell (1), and the end of the connecting piece away from the mounting plate (31) penetrates the connecting plate (33) and the side wall of the shell (1) at the same time; The damping sleeve (35): the damping sleeve (35) is arranged on the outer wall of the connecting piece close to the shell (1), the damping sleeve (35) penetrates the connecting plate (33) and the side wall of the shell (1) at the same time, the first rubber pad (36) is fixed on the outer wall of the damping sleeve (35), and the first rubber pad (36) is located between the outer wall of the connecting plate (33) and the inner wall of the shell (1); The damping assembly (4): the damping assembly (4) is arranged between the mounting plate (31) and the connecting plate (33); The damping assembly (4) includes a damping seat (43), and the damping seat (43) is mounted between the mounting plate (31) and the connecting plate (33); The damping seat (43) is internally provided with a storage groove (431), the damping seat (43) is internally provided with an inductor (5), the inductor (5) is located in the storage groove (431), and the inductor (5) has two, two inductors (5) are located at both ends of the storage groove (431); The bottom surface of the shell (1) is provided with a base (12), and the base (12) is provided with a lamp plate (7) on the bottom surface; The outer wall of the base (12) is provided with a ventilation hole, and the ventilation hole is in communication with the installation cavity (23); The outer wall of the shell (1) is provided with an exhaust assembly (8), and the exhaust assembly (8) is used for exhausting the gas sucked into the installation cavity (23).

2. The sound attenuated exhaust unit of claim 1, wherein, The outer wall of the connecting piece is sleeved with a nut (34), one side of the nut (34) abuts and presses the outer wall of the shell (21), the second rubber pad (37) is fixed on the outer wall of the damping sleeve (35), and the second rubber pad (37) is located between the outer wall of the shell (1) and the inner wall of the nut (34).

3. The sound attenuated exhaust unit of claim 1 further comprising, The mounting plate (31) is outwardly protruded in the middle, and the connecting piece is located on the protruding part of the mounting plate (31).

4. The sound attenuating and vibration isolating exhaust unit of claim 1, wherein The connecting plate (33) is protruded to one side of the shell (1) in the middle, and the protruding part of the connecting plate (33) abuts the side wall of the first rubber pad (36).

5. The sound attenuating and vibration isolating exhaust unit of claim 1, wherein The shell (21) is mounted with a sound (6) on the bottom surface.

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