CN111486134A - Silencer and silencing device - Google Patents

Silencer and silencing device Download PDF

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Publication number
CN111486134A
CN111486134A CN202010442884.1A CN202010442884A CN111486134A CN 111486134 A CN111486134 A CN 111486134A CN 202010442884 A CN202010442884 A CN 202010442884A CN 111486134 A CN111486134 A CN 111486134A
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CN
China
Prior art keywords
air
cavity
channel
suction
air inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010442884.1A
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Chinese (zh)
Inventor
邬锋华
谭剑辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Viper Cleaning Equipment Co Ltd
Original Assignee
Dongguan Viper Cleaning Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Viper Cleaning Equipment Co Ltd filed Critical Dongguan Viper Cleaning Equipment Co Ltd
Priority to CN202010442884.1A priority Critical patent/CN111486134A/en
Publication of CN111486134A publication Critical patent/CN111486134A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663Sound attenuation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/08Sealings
    • F04D29/083Sealings especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/582Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/584Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/70Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Exhaust Silencers (AREA)

Abstract

The invention relates to the technical field of silencing equipment, in particular to a silencer, which comprises an upper chamber, a lower chamber and a cover plate, wherein the upper chamber is provided with an upper air deflector, a first air inlet hole and a cavity, the upper air deflector is arc-shaped or spiral and is positioned in the cavity, the upper air deflector and the cavity enclose an arc-shaped or spiral upper silencing channel, the head end of the upper silencing channel is provided with an upper air inlet, the top surface of the lower chamber is provided with a first lower air inlet, the bottom of the lower chamber is provided with a circuitous lower silencing channel, and the tail end of the lower silencing channel is provided with a first lower air outlet. The invention prolongs the path stroke of the airflow flow, the noise generated by the airflow flow can be lost or offset due to turning interference and the like in the flowing process, the flow velocity of the airflow is reduced, and the aims of noise reduction and noise reduction are achieved; still provide a silencing device with muffler, its induced draft produced air current separates with the heat dissipation air current, has reduced the noise that the air current disturbed the production, has guaranteed the radiating effect.

Description

Silencer and silencing device
Technical Field
The invention relates to the technical field of silencing equipment, in particular to a silencer and a silencing device.
Background
At present, although different structures of silencers exist, the defects of complex structure, poor manufacturing manufacturability and high cost generally exist, and in addition, the existing silencers have the defect of poor silencing effect because the inherent defect exists in the structure, and the damping space and the diffusion space through which airflow passes in an effective space are generally limited. Therefore, the drawbacks are obvious, and a solution is needed.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a silencer and a silencing apparatus, which have simple structure and low cost, and greatly extend the path and stroke of the airflow flow by rotating and flowing the airflow in the upper air duct, the upper silencing channel and the lower silencing channel in sequence, and the noise generated by the airflow flow can be lost or offset due to turning interference and the like in the flowing process, so as to achieve the effects of silencing and reducing noise, and the silencing effect is obvious, and the airflow flow is stable, thereby preventing the generation of additional noise flocs, reducing the flow rate of the airflow, and achieving the purposes of silencing and reducing noise; the air flow generated by air suction is separated from the heat dissipation air flow, so that the noise generated by air flow interference is reduced, and the heat dissipation effect is ensured.
In order to achieve the purpose, the invention adopts the following technical scheme:
a silencer comprises an upper cavity, a lower cavity connected to the bottom of the upper cavity and a cover plate connected to the lower cavity, wherein the cover plate is used for covering the bottom of the lower cavity, the upper cavity is provided with an upper air deflector, a first air inlet and a cavity, the first air inlet is communicated with the top of the cavity, the upper air deflector is arc-shaped or spiral and is located in the cavity, an upper silencing channel which is arc-shaped or spiral is enclosed by the upper air deflector and the cavity, an upper air inlet is formed in the head end of the upper silencing channel, a first lower air inlet is formed in the top surface of the lower cavity, a circuitous lower silencing channel is arranged at the bottom of the lower cavity, the first lower air inlet is used for communicating the tail end of the upper silencing channel and the head end of the lower silencing channel, and a first lower air outlet is formed in the tail end of the lower silencing.
Further, a first sealing ring is arranged between the bottom of the upper cavity and the top surface of the lower cavity and used for sealing a gap between the upper cavity and the lower cavity, and a first through hole communicated with the first lower air inlet is formed in the first sealing ring.
Further, the middle part of cavity is provided with the installation core down, the bottom of installation core is located the central point that the noise elimination passageway put down, the lateral wall of installation core encloses with the inside wall of noise elimination passageway down and establishes into the heat dissipation passageway that has air outlet under the second, the middle part of installation core is concave to be equipped with the installation cavity, the louvre with heat dissipation passageway intercommunication is seted up to the lateral wall of installation cavity, the diapire of installation cavity is provided with air intake under the second, the apron is provided with the second fresh air inlet with air intake intercommunication under the second.
Further, the second lower air inlet is provided with a filter element, a first sealing ring is arranged between the filter element and the installation cavity, and the first sealing ring is used for sealing a gap between the filter element and the installation cavity.
Further, a second sealing ring is arranged between the cover plate and the bottom of the lower cavity and used for sealing a gap between the cover plate and the lower cavity, and a second through hole communicated with the second air inlet hole is formed in the second sealing ring.
The invention also provides a silencing device which comprises the suction motor and the silencer, wherein the air suction end of the suction motor extends into the cavity and is positioned at the central position of the upper silencing channel, the air suction end of the suction motor and the inner side wall of the upper silencing channel are enclosed to form an upper air channel, the upper air channel is communicated with the upper air inlet of the upper silencing channel, the heat dissipation end of the suction motor extends into the installation cavity in an protruding mode, the heat dissipation end of the suction motor and the inner side wall of the installation cavity are enclosed to form a lower air channel, the lower air channel is communicated with the heat dissipation holes, the air suction inlet of the air suction end of the suction motor is communicated with the first air inlet hole, and the heat dissipation inlet of the heat dissipation end of the suction motor is.
Furthermore, the top of the installation core protrudes into the cavity, a positioning ring is arranged in the middle of the cavity and is located at the center of the upper air deflector, the top of the installation core abuts against the bottom face of the air suction end of the suction motor, and the positioning ring is used for positioning the air suction end of the suction motor.
Furthermore, a second sealing ring is arranged between the air suction end of the suction motor and the positioning ring, and a second sealing ring is arranged between the bottom surface of the air suction end of the suction motor and the mounting core.
Furthermore, the heat dissipation end of the suction motor is convexly provided with a limiting portion, and the inner side wall of the installation cavity is concavely provided with a limiting groove for accommodating the limiting portion.
The invention also provides a silencing device which comprises the air extractor and the silencer, wherein the air extractor is positioned in the cavity, an air suction inlet of the air extractor is communicated with the first air inlet hole, the outer side wall of the air extractor and the inner side wall of the upper silencing channel are enclosed to form an upper air channel, and the upper air inlet of the upper silencing channel and the air suction outlet of the air extractor are both communicated with the upper air channel.
The invention has the beneficial effects that: the invention has simple and compact structure, reasonable design and low cost, greatly prolongs the path stroke of the air flow by rotating and flowing the air flow in the upper air duct, the upper silencing channel and the lower silencing channel in sequence, and the air flow can be lost or offset due to turning interference and the like in the flowing process, thereby achieving the effects of silencing and reducing noise, having obvious silencing effect, having stable air flow, preventing the generation of additional random noise, reducing the flow rate of the air flow and achieving the purposes of silencing and reducing noise; the air flow generated by air suction is separated from the heat dissipation air flow, so that the noise generated by air flow interference is reduced, and the heat dissipation effect is ensured.
Drawings
Fig. 1 is a schematic perspective view of a silencer according to the present invention.
Fig. 2 is a perspective view of another perspective of the silencer of the present invention.
Fig. 3 is an exploded view of the silencer of the present invention.
Fig. 4 is an exploded view of the muffler assembly of the present invention from another perspective.
Fig. 5 is a schematic perspective view of the upper chamber according to the present invention.
Fig. 6 is a schematic perspective view of the lower chamber of the present invention.
Fig. 7 is a perspective view of another perspective view of the lower chamber of the present invention.
Description of reference numerals:
1. an upper chamber; 11. an upper air deflector; 12. a first air inlet hole; 13. a cavity; 14. an upper vent channel; 15. an upper inlet; 16. a second seal ring; 17. a positioning ring; 2. a lower chamber; 20. a limiting groove; 21. a first lower air inlet; 22. a lower muffling channel; 23. a first lower air outlet; 24. installing a core; 25. a second lower air outlet; 26. a heat dissipation channel; 27. a mounting cavity; 28. heat dissipation holes; 29. a second lower air inlet; 3. a cover plate; 31. locking lugs; 32. a second air inlet hole; 33. a filter element; 34. a first seal ring; 35. a second seal ring; 4. a first seal ring; 41. a first through hole; 42. a positioning column; 43. positioning holes; 44. positioning a groove; 45. a second through hole; 5. a suction motor; 51. an air suction end; 53. an air suction inlet; 54. an air suction outlet; 55. a heat dissipation end; 57. a heat dissipation inlet; 58. a heat dissipation outlet; 59. a limiting part.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
As shown in fig. 1 to 7, the muffler provided by the present invention includes an upper chamber 1, a lower chamber 2 connected to the bottom of the upper chamber 1, and a cover plate 3 connected to the lower chamber 2, wherein the cover plate 3 is used for covering the bottom of the lower chamber 2, the upper chamber 1 is provided with an upper air deflector 11, a first air inlet 12, and a cavity 13, the first air inlet 12 is coaxially disposed with the cavity 13, the first air inlet 12 is communicated with the top of the cavity 13, the upper air deflector 11 is arc-shaped or spiral and is located in the cavity 13, the upper air deflector 11 and the cavity 13 enclose an upper sound absorbing channel 14 that is arc-shaped or spiral, the head end of the upper sound absorbing channel 14 is provided with an upper air inlet 15, the top surface of the lower chamber 2 is provided with a first lower air inlet 21, the bottom of the lower chamber 2 is provided with a circuitous lower sound absorbing channel 22, the first lower air inlet 21 is used for communicating the tail end of the upper sound absorbing channel 14 with the head end of the, and a first lower air outlet 23 is arranged at the tail end of the lower silencing channel 22. In this embodiment, it is described that the suction motor 5 is installed in the cavity 13, the suction inlet 53 of the suction motor 5 is communicated with the first air inlet 12, the suction end 51 of the suction motor 5 and the inner side wall of the upper sound channel 14 are enclosed to form an upper air duct, the upper air inlet 15 and the suction outlet 54 of the suction motor 5 are both communicated with the upper air duct, and the upper sound channel 14 is a one-turn or multi-turn air flow channel.
In actual operation, the air suction inlet 53 of the suction motor 5 sucks air into the external structure through the first air inlet hole 12, so that the external structure is in a vacuum state, the air suction outlet 54 of the suction motor 5 discharges air into the upper air duct, the air flows along the path of the upper air duct in a rotating manner, when the air flows to the upper air inlet 15, the air flows into the upper silencing channel 14 through the upper air inlet 15, so that the air flows along the path of the upper silencing channel 14 in a rotating manner, and when the air flows to the tail end of the upper silencing channel 14, the air flows to the lower silencing channel 22 through the first lower air inlet 21, so that the air flows circuitously along the path of the lower silencing channel 22 until the air flows out of the first lower air outlet 23. The invention has simple and compact structure, reasonable design, good manufacturing process and low cost, and the airflow rotates and flows in the upper air duct, the upper silencing passage 14 and the lower silencing passage 22 in sequence, so that the airflow rotates and flows from inside to outside, then flows from top to bottom, and finally rotates and flows from outside to inside, thereby greatly prolonging the path stroke of the airflow flow, and the airflow can be lost or offset due to turning interference and the like in the flowing process, thereby achieving the effects of silencing and reducing noise, having obvious silencing effect, stable airflow flow, preventing the generation of additional random noise, reducing the flow rate of the airflow, and achieving the purposes of silencing and reducing noise. The invention is particularly suitable for being applied to a floor washing machine.
Specifically, the upper chamber 1 and the lower chamber 2 can be made of sound-absorbing materials, so that the noise reduction effect of the invention is further improved.
Specifically, the cover plate 3 is detachably connected with the bottom of the lower chamber 2, and a plurality of locking lugs 31 are arranged on the circumferential direction of the cover plate 3, so that the locking and mounting of the invention on an external structure are facilitated by the arrangement of the locking lugs 31.
In this embodiment, a first sealing ring 4 is disposed between the bottom of the upper chamber 1 and the top surface of the lower chamber 2, the first sealing ring 4 is used to seal a gap between the upper chamber 1 and the lower chamber 2, the first sealing ring 4 is provided with a first through hole 41 communicated with the first lower air inlet 21, and the first through hole 41 is disposed corresponding to the first lower air inlet 21. The gap between the upper chamber 1 and the lower chamber 2 is sealed by adding the first sealing ring 4, so that noise caused by air flow leakage in the upper sound absorbing channel 14 can be avoided, and the air tightness between the upper chamber 1 and the lower chamber 2 is improved.
Specifically, the upper chamber 1 and the lower chamber 2 may be fixedly connected by screws, or may be connected by fastening, covering, or screwing.
Specifically, the top surface of the lower chamber 2 is provided with a positioning column 42, the first seal ring 4 is provided with a positioning hole 43, the positioning column 42 penetrates through the positioning hole 43, and the positioning column 42 is matched with the positioning hole 43 to position the first seal ring 4, so that the first seal ring 4 is convenient to mount, the position accuracy and stability of the first seal ring 4 are improved, and the phenomenon of air leakage caused by the deviation of the first seal ring 4 is avoided; the concave constant head tank 44 that is equipped with of top surface of cavity 2 down, first sealing washer 4 holds and locates in constant head tank 44 for go up the compact structure between cavity 1, first sealing washer 4 and the lower cavity 2, the inner wall of constant head tank 44 is contradicted spacingly to the lateral wall of first sealing washer 4, has further improved first sealing washer 4's stability, and has avoided going up cavity 1 and lower cavity 2 and extrude first sealing washer 4 and make first sealing washer 4 warp inefficacy, guarantees to go up the gas tightness between cavity 1 and the lower cavity 2.
In this embodiment, the middle of the lower chamber 2 is provided with an installation core 24, the bottom of the installation core 24 is located at the center of the lower muffling channel 22, the outer side wall of the installation core 24 and the inner side wall of the lower muffling channel 22 are surrounded to form a heat dissipation channel 26 with a second lower air outlet 25, the middle of the installation core 24 is concavely provided with an installation cavity 27, the side wall of the installation cavity 27 is provided with a heat dissipation hole 28 communicated with the heat dissipation channel 26, the bottom wall of the installation cavity 27 is provided with a second lower air inlet 29, and the cover plate 3 is provided with a second air inlet 32 communicated with the second lower air inlet 29; the suction end 51 of the suction motor 5 protrudes into the cavity 13 and is located at the center of the upper sound-absorbing channel 14, the suction end 51 of the suction motor 5 and the inner side wall of the upper sound-absorbing channel 14 are surrounded to form an upper air duct, the upper air duct is communicated with the upper air inlet 15 of the upper sound-absorbing channel 14, the heat dissipation end 55 of the suction motor 5 protrudes into the installation cavity 27, the heat dissipation end 55 of the suction motor 5 and the inner side wall of the installation cavity 27 are surrounded to form a lower air duct, the lower air duct is communicated with the heat dissipation holes 28, the suction inlet 53 of the suction end 51 of the suction motor 5 is communicated with the first air inlet 12, the heat dissipation inlet 57 of the heat dissipation end 55 of the suction motor 5 is communicated with the second lower air inlet 29, and the heat dissipation outlet 58 of the heat dissipation end 55 of the suction motor 5 is communicated with the lower.
During the process of evacuating the external structure by the air suction end 51 of the suction motor 5, the air in the external environment will enter the heat dissipation end 55 of the suction motor 5 through the second lower air inlet 29 and the heat dissipation inlet 57 of the heat dissipation end 55 of the suction motor 5 to form a heat dissipation airflow, the heat dissipation airflow in the heat dissipation end 55 of the suction motor 5 will flow into the lower air duct through the heat dissipation outlet 58 of the heat dissipation end 55 of the suction motor 5, the heat dissipation airflow will flow along the path of the lower air duct, when the heat dissipation airflow enters the heat dissipation channel 26 through the heat dissipation holes 28, the heat dissipation airflow will rotate along the path of the heat dissipation channel 26 until the heat dissipation airflow is discharged from the second lower air outlet 25, thereby dissipating the heat of the suction motor 5 is dissipated, the heat dissipation effect is good, and the flow path of the heat dissipation airflow is extended, so that the noise generated by the flow of the heat dissipation airflow will be lost or offset due to turning interference and the like during the flow process, thereby reach the effect of making an uproar that falls in the amortization, the noise cancelling effect is obvious, and the flow of heat dissipation air current is stable, has prevented that extra random noise from producing, has reduced the velocity of flow of heat dissipation air current, has reached the mesh of making an uproar that falls in the amortization. The heat dissipation airflow is separated from the airflow generated by the air suction, so that the noise generated by the airflow interference is reduced, and the heat dissipation effect of the suction motor 5 is ensured.
Specifically, the first lower air outlet 23 and the second lower air outlet 25 are both opened on the side wall of the lower chamber 2.
In this embodiment, the second lower air inlet 29 is provided with the filter element 33, the filter element 33 filters air in the external environment, so as to prevent impurities (such as dust and the like) from entering the suction motor 5, the lower air duct or/and the heat dissipation channel 26, thereby preventing blockage, reducing the failure probability of the present invention, and prolonging the service life of the present invention, the first sealing ring 34 is arranged between the filter element 33 and the installation cavity 27, the first sealing ring 34 is used for sealing a gap between the filter element 33 and the installation cavity 27, improving the air tightness between the filter element 33 and the installation cavity 27, and avoiding air leakage.
In this embodiment, a second sealing ring 35 is disposed between the cover plate 3 and the bottom of the lower chamber 2, the second sealing ring 35 is used for sealing a gap between the cover plate 3 and the lower chamber 2, and the second sealing ring 35 is provided with a second through hole 45 communicated with the second air inlet hole 32; this structural design has improved the gas tightness between the bottom of apron 3 and lower cavity 2, avoids the air current to leak and produce the noise from the clearance between the bottom of apron 3 and lower cavity 2, and second sealing washer 35 has certain elasticity moreover, plays buffering and absorbing effect.
In this embodiment, the second sealing ring 16 is sleeved on the outer side wall of the top of the upper chamber 1, and when the silencer is mounted on an external structure, the second sealing ring 16 is used for sealing a gap between the top of the upper chamber 1 and the external structure, so as to avoid air leakage and ensure silencing effect.
The invention also provides a silencer, which comprises a suction motor 5 and the silencer, wherein a suction end 51 of the suction motor 5 protrudes into the cavity 13 and is positioned at the center of the upper silencing channel 14, the suction end 51 of the suction motor 5 and the inner side wall of the upper silencing channel 14 are enclosed to form an upper air duct, the upper air duct is communicated with an upper air inlet 15 of the upper silencing channel 14, a heat dissipation end 55 of the suction motor 5 protrudes into the mounting cavity 27, the heat dissipation end 55 of the suction motor 5 and the inner side wall of the mounting cavity 27 are enclosed to form a lower air duct, the lower air duct is communicated with the heat dissipation holes 28, a suction inlet 53 of the suction end 51 of the suction motor 5 is communicated with the first air inlet hole 12, and a heat dissipation inlet 57 of the heat dissipation end 55 (cooling end) of the suction motor 5 is communicated with the second lower air inlet 29. The silencer has all the beneficial effects of the silencer, and the details are not repeated.
In this embodiment, the top of the mounting core 24 protrudes into the cavity 13, the middle of the cavity 13 is provided with a positioning ring 17, the positioning ring 17 is located at the center of the upper air deflector 11, the top of the mounting core 24 abuts against the bottom surface of the air suction end 51 of the suction motor 5, and the positioning ring 17 is used for positioning the air suction end 51 of the suction motor 5, so as to ensure the position accuracy and stability of the suction motor 5, and facilitate the assembly of the suction motor 5 and the upper chamber 1.
In this embodiment, the second sealing ring 16 is arranged between the air suction end 51 of the suction motor 5 and the positioning ring 17, and the second sealing ring 16 seals the gap between the air suction end 51 of the suction motor 5 and the positioning ring 17, so that the air tightness is good, and the air leakage phenomenon is avoided; the second sealing ring 16 is arranged between the bottom surface of the air suction end 51 of the suction motor 5 and the installation core 24, the second sealing ring 16 seals a gap between the bottom surface of the air suction end 51 of the suction motor 5 and the installation core 24, the communication between an upper air duct and a lower air duct is avoided, the air tightness is improved, and the upper air duct and the lower air duct are guaranteed not to be influenced by each other.
In this embodiment, the heat dissipating end 55 of the suction motor 5 is provided with a protruding limiting portion 59, and the inner sidewall of the mounting cavity 27 is provided with a concave limiting groove 20 for accommodating the limiting portion 59. Through the cooperation of spacing groove 20 and spacing portion 59, the lateral wall of spacing groove 20 is spacing to spacing portion 59 to guarantee the position accuracy and the stability of suction motor 5.
The invention also provides a silencing device, which comprises an air extractor and the silencer, wherein the air extractor is positioned in the cavity 13, an air suction inlet of the air extractor is communicated with the first air inlet hole 12, the outer side wall of the air extractor and the inner side wall of the upper sound absorbing channel 14 are enclosed to form an upper air channel, the upper air inlet 15 of the upper sound absorbing channel 14 and an air suction outlet of the air extractor are both communicated with the upper air channel, the middle part of the cavity 13 is provided with a positioning ring 17, the positioning ring 17 is used for positioning the air extractor, and a second sealing ring 16 is arranged between the top end of the air extractor and the positioning ring 17. The silencer has all the beneficial effects of the silencer, and the details are not repeated.
All the technical features in the embodiment can be freely combined according to actual needs.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.

Claims (10)

1. A muffler characterized by: the improved air conditioner is characterized by comprising an upper cavity, a lower cavity connected to the bottom of the upper cavity and a cover plate connected to the lower cavity, wherein the cover plate is used for covering the bottom of the lower cavity, the upper cavity is provided with an upper air deflector, a first air inlet and a cavity, the first air inlet is communicated with the top of the cavity, the upper air deflector is arc-shaped or spiral and is positioned in the cavity, the upper air deflector and the cavity are surrounded to form an arc-shaped or spiral upper silencing channel, an upper air inlet is formed in the head end of the upper silencing channel, a first lower air inlet is formed in the top surface of the lower cavity, a circuitous lower silencing channel is arranged at the bottom of the lower cavity, the first lower air inlet is used for communicating the tail end of the upper silencing channel and the head end of the lower silencing channel, and a first lower air outlet.
2. A muffler according to claim 1 wherein: a first sealing ring is arranged between the bottom of the upper cavity and the top surface of the lower cavity and used for sealing a gap between the upper cavity and the lower cavity, and a first through hole communicated with the first lower air inlet is formed in the first sealing ring.
3. A muffler according to claim 1 wherein: the middle part of cavity is provided with the installation core down, the bottom of installation core is located the central point of lower amortization passageway and puts, the lateral wall of installation core encloses with the inside wall of lower amortization passageway and establishes into the heat dissipation channel who has air outlet under the second, the concave installation cavity that is equipped with in middle part of installation core, the louvre with heat dissipation channel intercommunication is seted up to the lateral wall of installation cavity, the diapire of installation cavity is provided with air intake under the second, the apron is provided with the second fresh air inlet with air intake intercommunication under the second.
4. A muffler according to claim 3, wherein: the air inlet department has installed the filter core under the second, be provided with first sealing ring between filter core and the installation cavity, first sealing ring is used for the sealed clearance of crossing between filter core and the installation cavity.
5. A muffler according to claim 3, wherein: and a second sealing ring is arranged between the cover plate and the bottom of the lower chamber and used for sealing a gap between the cover plate and the lower chamber, and a second through hole communicated with the second air inlet hole is formed in the second sealing ring.
6. A silencing apparatus, characterized in that: the silencer comprises a suction motor and the silencer according to any one of claims 3 to 5, wherein a suction end of the suction motor extends into a cavity and is positioned in the center of an upper silencing channel, the suction end of the suction motor and the inner side wall of the upper silencing channel are enclosed to form an upper air channel, the upper air channel is communicated with an upper air inlet of the upper silencing channel, a heat dissipation end of the suction motor extends into an installation cavity in an protruding mode, a heat dissipation end of the suction motor and the inner side wall of the installation cavity are enclosed to form a lower air channel, the lower air channel is communicated with heat dissipation holes, a suction inlet of the suction end of the suction motor is communicated with a first air inlet hole, and a heat dissipation inlet of the heat dissipation end of the suction motor is communicated with a.
7. The acoustic abatement apparatus of claim 6, wherein: the top of the installation core protrudes into the cavity, a positioning ring is arranged in the middle of the cavity and is located at the center of the upper air deflector, the top of the installation core abuts against the bottom face of the air suction end of the suction motor, and the positioning ring is used for positioning the air suction end of the suction motor.
8. The acoustic abatement apparatus of claim 7, wherein: a second sealing ring is arranged between the air suction end of the suction motor and the positioning ring, and a second sealing ring is arranged between the bottom surface of the air suction end of the suction motor and the mounting core.
9. The acoustic abatement apparatus of claim 6, wherein: the heat dissipation end of the suction motor is convexly provided with a limiting portion, and the inner side wall of the installation cavity is concavely provided with a limiting groove for accommodating the limiting portion.
10. A silencing apparatus, characterized in that: the silencer comprises an air extractor and the silencer as claimed in any one of claims 1 to 5, wherein the air extractor is located in the cavity, an air suction inlet of the air extractor is communicated with the first air inlet hole, an upper air channel is formed by the outer side wall of the air extractor and the inner side wall of the upper sound channel in an enclosing mode, and the upper air inlet of the upper sound channel and an air suction outlet of the air extractor are communicated with the upper air channel.
CN202010442884.1A 2020-05-22 2020-05-22 Silencer and silencing device Pending CN111486134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010442884.1A CN111486134A (en) 2020-05-22 2020-05-22 Silencer and silencing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010442884.1A CN111486134A (en) 2020-05-22 2020-05-22 Silencer and silencing device

Publications (1)

Publication Number Publication Date
CN111486134A true CN111486134A (en) 2020-08-04

Family

ID=71813354

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010442884.1A Pending CN111486134A (en) 2020-05-22 2020-05-22 Silencer and silencing device

Country Status (1)

Country Link
CN (1) CN111486134A (en)

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