CN203516001U - Air suction pressure-stabilizing sound-reducing element for air compressor - Google Patents
Air suction pressure-stabilizing sound-reducing element for air compressor Download PDFInfo
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- CN203516001U CN203516001U CN201320579196.5U CN201320579196U CN203516001U CN 203516001 U CN203516001 U CN 203516001U CN 201320579196 U CN201320579196 U CN 201320579196U CN 203516001 U CN203516001 U CN 203516001U
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- sound
- expansion cavity
- expansion chamber
- end cover
- air compressor
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Abstract
The utility model discloses an air suction pressure-stabilizing sound-reducing element for an air compressor. The air suction pressure-stabilizing sound-reducing element comprises an expansion cavity, the two ends of the expansion cavity are provided with a front end cover and a rear end cover respectively, and the front end cover and the rear end cover can seal the two ends of the expansion cavity. A perforated internal inserting pipe which penetrates through the front end cover and the rear end cover is horizontally arranged in the expansion cavity. Penetrating holes are densely distributed in the part, located in the expansion cavity, of the perforated internal inserting pipe, and two supporting devices are arranged at the two ends of the outer portion of the expansion cavity respectively. The perforated internal inserting pipe replaces a traditional expansion cavity structure, the punching rate and the caliber are reasonably designed, air flow can only pass through a pipe section with holes in the wall and can not enter the expansion cavity, resistance loss is reduced, sound quality, acoustic compliance and acoustic resistance form a sound vibration system in an air flow channel, part of acoustic energy is converted to heat energy to be dissipated due to friction damping of a resonator, the other part of acoustic energy is reflected to a sound source, the effect of sound elimination is achieved, and the air suction pressure-stabilizing sound-reducing element is simple in structure, and convenient to install.
Description
Technical field
The utility model relates to a kind of used for air compressor air inlet voltage stabilizing silencer element.
Background technique
Passenger vehicle and truck adopt air compressor as car load air-pressure brake source of the gas conventionally at present, consider the reliability of air compressor and the convenience of layout, conventionally air compressor air intake system and diesel engine are shared to a set of gas handling system, though saved space but also buried the hidden danger that produces regenerated noise, during compressor operation, intake and exhaust valve block bounces, gear engagement all can produce noise, especially with suction pulsation noise, attach most importance to, it is even more serious when particularly air compressor air intake pulse and diesel engine air inlet system produce coupling, both there is narrow audio-frequency noise in this noise, also there is broadband noise composition, again it is longer to mate the car load gas handling system cycle, tend to cannot implement because of many reasons.
Air compressor noise comprises the narrow audio-frequency noises such as valve block slapping noise, air inlet intermittent noise, intermittent type suction pulsation and the coupling of car load gas handling system simultaneously produces broadband noise, the matching way of rotational speed of air compressor, Full Vehicle System etc. directly affects noise frequency, amplitude, this just requires air compressor air intake element should have voltage stabilizing ability, also to there is wider deadening frequency band to eliminate above-mentioned various noise, more conventional quarter-wave long tube on market, has high noise elimination amplitude and frequency selectivity; But this voltage stabilizing ability, wideband acoustical absorptivity is poor, versatility is low, need to accurately locates frequency of noise elimination for intrinsic vehicle and develop separately.Multiplex single resonance structure, often attends to one thing and lose sight of another at present, cannot finely take the acoustical behavior, voltage stabilizing function and the extremely low back pressure loss that under installing space, have guaranteed into account.
Model utility content
The technical problems to be solved in the utility model is for above-mentioned defect, and a kind of highly versatile, frequency of noise elimination is wide, exhaust back pressure is low, voltage stabilizing ability is strong used for air compressor air inlet voltage stabilizing silencer element are provided.
In order to solve the problems of the technologies described above, structural feature of the present utility model is to comprise expansion chamber, the two end part of described expansion chamber are provided with respectively can be by the front cover of its sealing and rear end cover, in described expansion chamber, be horizontally arranged with the perforation interpolation pipe that runs through front cover and rear end cover, the part that described perforation interpolation pipe is positioned at expansion chamber is densely covered with perforation, and the outside two ends of described expansion chamber are separately installed with two support devices.
Described support device comprises support and be fixed in the clip on support, and the joint of described clip opening portion is bolted.
On the inwall of described clip, be connected with vibration isolation rubber packing ring.
The two end part that described perforation interpolation pipe is positioned at outside expansion chamber are provided with respectively projection.
Described expansion chamber is cylindrical.
Adopt the used for air compressor air inlet voltage stabilizing silencer element of such scheme compared with prior art to have the following advantages: perforation interpolation pipe is laterally arranged in expansion chamber and with expansion chamber and forms silene system, perforation interpolation pipe on perforation, the similar piston of gas column of piercing aperture, has certain acoustical mass; The similar pneumatic spring of airtight expansion chamber, makes sound carry out back reflective between expansion chamber inwall and perforation interpolation pipe outer wall, has certain acoustic compliance; Air vibrates with perforation pore-throat wall and exists friction and damping function in aperture, has certain acoustic resistance.Acoustical mass, acoustic compliance and acoustic resistance just form acoustic vibration system at air-flow path like this, when the sound wave of some frequency during through perforation because acoustic impedance is undergone mutation, part acoustic energy loses because the frictional damping of resonator is converted into heat energy, another part sound energy reflection echogenicity, thus play the effect of noise elimination.
The utility model replaces traditional expansion cavity structure by perforation interpolation pipe, and appropriate design punching rate and aperture, makes air-flow not enter expansion chamber by one section of wall perforated pipe section, and its drag losses diminishes; For sound wave, because the punching rate of perforated pipe is enough large, still can be similar to the acoustic attenuation performance that keeps its off state, can improve by adjusting punching rate the selectivity of expansion chamber frequency of noise elimination simultaneously.The utility model is simple in structure in addition, easy for installation, and the air inlet pipeline that does not change air compressor is arranged, by increasing air inlet voltage stabilizing silencer element, when reducing gas, has also suppressed acoustic wave segment propagation, can also solve air compressor abnormal sound problem.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 be in Fig. 1 A-A to view.
Embodiment
As depicted in figs. 1 and 2, this used for air compressor air inlet voltage stabilizing silencer element comprises cylindrical expansion chamber 2, the two end part of expansion chamber 2 are provided with respectively can be by the front cover of its sealing 1 and rear end cover 5, in expansion chamber 2, be horizontally arranged with the perforation interpolation pipe 4 that runs through front cover 1 and rear end cover 5, on front and rear cover, be respectively equipped with the through hole that can pass for perforation interpolation pipe 4, the part that perforation interpolation pipe 4 is positioned at expansion chamber 2 is densely covered with perforation 3, the punching rate of perforation 3 is enough large, guarantee gas and sound wave is without hindrance passes through, can improve by adjusting punching rate the selectivity of expansion chamber frequency of noise elimination.The outside two ends of expansion chamber 2 are separately installed with two support devices, and support device comprises support 6 and be fixed in the clip 7 on support 6, and support 6 is bolted on diesel engine, and clip 7 is fixed on support 6 by two clamping bolts.The joint of clip 7 openings is fixing by bolt 9, and expansion chamber 2 is clamped in clip 7, and the external diameter of the internal diameter of clip 7 and expansion chamber 2 adapts, to expansion chamber 2 is clamped and is fixed on diesel engine body.On the inwall of clip 7, be connected with vibration isolation rubber packing ring 8, increase the friction between clip 7 and expansion chamber 2, guarantee the reliability in using process.The two end part that perforation interpolation pipe 4 is positioned at outside expansion chamber 2 are provided with respectively projection 10, and conveniently perforation interpolation pipe 4 is fixing.
During installation, support 6 is bolted on diesel engine body, again clip 7 is fixed on support 6 by clamping bolt, thereby expansion chamber 2 is fixed on diesel engine body, perforation interpolation pipe 4 is laterally arranged in expansion chamber 2 through the through hole of front and rear cover, and air-flow and sound wave enter and carry out from the outlet side of perforation interpolation pipe 4, discharging voltage stabilizing noise elimination from the inlet end of perforation interpolation pipe 4.
The utility model is not limited to above-mentioned embodiment, and those skilled in the art, not departing under the prerequisite of spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.
Claims (5)
1. a used for air compressor air inlet voltage stabilizing silencer element, it is characterized in that comprising expansion chamber (2), the two end part of described expansion chamber (2) are provided with respectively can be by the front cover of its sealing (1) and rear end cover (5), in described expansion chamber (2), be horizontally arranged with the perforation interpolation pipe (4) that runs through front cover (1) and rear end cover (5), the part that described perforation interpolation pipe (4) is positioned at expansion chamber (2) is densely covered with perforation (3), and the outside two ends of described expansion chamber (2) are separately installed with two support devices.
2. used for air compressor air inlet voltage stabilizing silencer element according to claim 1, is characterized in that described support device comprises support (6) and is fixed in the clip (7) on support (6), and the joint of described clip (7) opening portion is fixing by bolt (9).
3. used for air compressor air inlet voltage stabilizing silencer element according to claim 2, is characterized in that being connected with vibration isolation rubber packing ring (8) on the inwall of described clip (7).
4. used for air compressor air inlet voltage stabilizing silencer element according to claim 1, is characterized in that described perforation interpolation pipe (4) is positioned at the outer two end part of expansion chamber (2) and is provided with respectively projection (10).
5. according to the used for air compressor air inlet voltage stabilizing silencer element described in any one in claim 1-4, it is characterized in that described expansion chamber (2) is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320579196.5U CN203516001U (en) | 2013-09-18 | 2013-09-18 | Air suction pressure-stabilizing sound-reducing element for air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320579196.5U CN203516001U (en) | 2013-09-18 | 2013-09-18 | Air suction pressure-stabilizing sound-reducing element for air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516001U true CN203516001U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320579196.5U Expired - Lifetime CN203516001U (en) | 2013-09-18 | 2013-09-18 | Air suction pressure-stabilizing sound-reducing element for air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516001U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500402A (en) * | 2014-12-16 | 2015-04-08 | 广东美芝制冷设备有限公司 | Rotary compressor |
| WO2019109476A1 (en) * | 2017-12-08 | 2019-06-13 | 无锡小天鹅股份有限公司 | Clothes dryer and cooling air inlet structure therefor |
-
2013
- 2013-09-18 CN CN201320579196.5U patent/CN203516001U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500402A (en) * | 2014-12-16 | 2015-04-08 | 广东美芝制冷设备有限公司 | Rotary compressor |
| WO2019109476A1 (en) * | 2017-12-08 | 2019-06-13 | 无锡小天鹅股份有限公司 | Clothes dryer and cooling air inlet structure therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |