CN104141605A - A low-noise hydraulic device - Google Patents
A low-noise hydraulic device Download PDFInfo
- Publication number
- CN104141605A CN104141605A CN201410189575.2A CN201410189575A CN104141605A CN 104141605 A CN104141605 A CN 104141605A CN 201410189575 A CN201410189575 A CN 201410189575A CN 104141605 A CN104141605 A CN 104141605A
- Authority
- CN
- China
- Prior art keywords
- wall
- hole
- hydraulic equipment
- reflect sound
- hole wall
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/001—Noise damping
- F04B53/002—Noise damping by encapsulation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Compressor (AREA)
Abstract
A low-noise hydraulic device is provided. The low-noise hydraulic device comprises a motor pump unit. The motor pump unit comprises a pump, and a motor driving the pump. The motor pump unit is disposed in a closed shell formed by a plurality of walls. One or more of the walls form(s) a closed double-wall frame. The inner cavity of the frame is a storage container for a hydraulic pressure medium. One or more of other walls form(s) a sound insulation wall. The one or more of the walls has or have surfaces reflecting sounds. Before one or more of the surfaces reflecting the sounds, a hole wall completely or partially covers the surfaces reflecting the sounds are arranged at a distance, and is provided with a plurality of through holes having a hole cross section less than 0.3 mm<2> which are distributed in the surface of the hole wall.
Description
Technical field
The present invention relates to a kind of low noise hydraulic equipment, it has motor pump unit, described motor pump unit is by pump and drive described pump motor to form, wherein said motor pump unit is arranged in housing that be made up of multiple walls, sealing, and one or more wall in described wall forms the double-wall frame member of sealing, the inner chamber of described framework is the storage vessel for hydraulic pressure medium, and one or more wall in other walls is configured to sound-proof wall, and one or more wall in wherein said wall has the surface of reflect sound at its housing inner side place.
Background technique
In this low noise hydraulic equipment, remove to construct the framework of double-walled known U-shaped.Motor pump unit and if desired less pump and all produce strong noise for other assemblies cool cycles, that drive this pump motor and housing, this noise section is subdued in the time that it outwards transmits by the storage vessel that comprises hydraulic pressure medium.Other of described noise are subdued by sound-proof wall and are realized.Described sound-proof wall has foamed material or the lamination coating of many perforates, and these materials can be filled hydraulic pressure medium due to the leakage from storage vessel.Also there is thus fire hazard.
Summary of the invention
Task of the present invention is to realize the low noise hydraulic equipment of the type that a kind of beginning mentions, its avoided these defects and realized to by be arranged in noise that unit in housing and assembly produce effectively, inexpensively, few maintenance ground, enduringly and can be easy to supplement equipment and carry out sound insulation.
This task is solved in the following manner according to the present invention, before the surface of one or more reflect sound in the surface of described reflect sound, with a pitch arrangement the surperficial hole wall that completely or partially covers described reflect sound, described hole wall has multiple holes cross section with distributing and is approximately less than 0.3mm in its face
2through hole.Before sound-proof wall, also can arrange hole wall in the mode that completely or partially covers described sound-proof wall.This hole wall is also referred to as micropore shock absorber (mikroperforierte Absorber, MPA).The wall of described reflect sound may directly not apply described MPA in some cases, but packs if desired the wall of the reflection use that is coated with MPA into for better operation.
At this, described hole wall can be made up of the film of having time.
Described hole wall forms micropore shock absorber, and this micropore shock absorber works and obtains thus effective noise reduction in relatively wide frequency range.The viscous friction of the air of described sound-absorbing based in hole.
Because described sound insulation system can not be filled hydraulic pressure medium, avoid fire hazard.
Solution according to the present invention is effective, with low cost, few maintenance, durable and can be easy to supplement equipment.Described solution all has huge advantage aspect its Economy and the feature of environmental protection thereof.
The sound insulation that sound-proof wall has these advantages is realized by following mode, described sound-proof wall by the outer wall of the internal surface with reflect sound and inner hole wall sandwich-type form, wherein said hole wall has the about <0.3mm of multiple holes cross section
2through hole.
Can cause the sound to being sent by hydraulic equipment the sound insulation further reducing be, in one of described wall, be furnished with ventilating joint and in one of described wall, be furnished with exhaust joint, wherein said ventilating joint and/or exhaust joint form with the inner hole wall of a pitch arrangement by the outer wall of the internal surface with reflect sound with respect to described outer wall, and wherein said hole wall has the about <0.3mm of multiple holes cross section
2through hole.
Described hole can have different cross sections.Especially advantageously,, in the time that described hole has the cross section of slot-shaped cross section or circle, can manufacture simply.
For circular cross section, described hole preferably have large about 0.05mm to the diameter between 0.5mm.
In order to realize the high efficiency of sound insulation in the situation that spacing is different between sound source and hole wall, described hole wall can be with different pitch arrangement before the surface of described reflect sound.
In order to realize division pitch area, that improve sound insulation between surface and the hole wall of reflect sound, the cavity forming by the spacing between surface and the hole wall of reflect sound can be divided into multiple chambers by the division wall extending between the surface at described reflect sound and described hole wall.
At this, described chamber is preferably formed cellular structure.
Another improvement project of sound insulation is realized by following mode, in the cavity between surface and the hole wall of described reflect sound, be furnished with the second hole wall that one or more is arranged in parallel relative to each other, described the second hole wall has the about <0.3mm of multiple holes cross section
2through hole.
If described division wall is fixedly connected with described wall and/or hole wall, described division wall is formed for the supporting structure of hole wall simultaneously, and described hole wall is without self-supporting thus, but can construct very thinly, especially can be configured to film-form.
The simple fixing of described division wall realized by following mode, and described division wall is fixedly connected with described wall and/or hole wall by adhesive.
Described hole wall and/or divide that wall energy is enough to be made up of different, suitable material.Described hole wall and/or division wall are preferably made up of metal or plastics.
Brief description of the drawings
Embodiments of the invention are shown in the drawings and described in detail hereinafter.Wherein:
Fig. 1 shows the cross section of low noise hydraulic equipment;
Fig. 2 shows for according to the second embodiment's of the ventilating joint of the hydraulic equipment of Fig. 1 cross section;
Fig. 3 shows for according to another embodiment's of the wall construction of the hydraulic equipment of Fig. 1 perspective exploded view;
Fig. 4 shows the intercepting part according to the view of the hole wall of the hydraulic equipment of Fig. 1; And
Fig. 5 shows according to the intercepting part of the surperficial side view of the hole wall of the hydraulic equipment of Fig. 1 and reflect sound.
Embodiment
Hydraulic equipment shown in Figure 1 shows the storage vessel 1 for the U-shaped of hydraulic pressure medium, and this storage vessel is arranged on substrate 2.Described storage vessel forms three sidewalls 3,4 and 5 of rectangular frame, and the bottom of described framework is formed by substrate 2.Described sidewall 3,4 and 5 is configured to double-walled and welds together with described substrate 2.Produce thus the cavity for holding hydraulic pressure medium, described cavity additionally has the effect of noise reduction.Towards unshowned the 4th side, storage vessel 1 has the sound-proof wall of noise reduction.Towards upper, described storage vessel 1 seals by the sound-proof wall 6 of noise reduction.Form the housing 25 of sealing by described sidewall 3-5, unshowned sound-proof wall, substrate 2 and described sound-proof wall 6.
There is motor pump unit 7 in the internal placement of described housing 25, the pump 8 that this motor pump unit has air cooled motor and drives by this motor 9.Described motor 9 is arranged on motor bracket 10, and this motor bracket is fixed on described substrate 2 by vibration damper 11.
In order to carry the required cooling-air of motor 9 for outside ventilation to described motor pump unit 7, there is ventilating joint 12, this ventilating joint imports to the inside of described housing 25 from outside through sound-proof wall 6.
As clearly seen in Fig. 2, cooling-air aspirates by grid 13 and at the internal turn of described ventilating joint 12 and the described motor 9 that leads.
In addition, in described sound-proof wall 6, also arranged exhaust joint 14, the air being heated by motor 9 by described exhaust joint can flow out again from described housing 25.
The inwall of the inwall of described sidewall 3,4 and 5 and ventilating joint 12 and exhaust joint 14 has formed the surface 15 of reflect sound.Before the surface 15 of described reflect sound, be furnished with hole wall 19,20 and 21 with spacing 16,17 and 18, as it amplifies and illustrates in Figure 4 and 5.Described hole wall 19,20 and 21 has through hole 22, and this through hole has circular cross section and the diameter of 0.3mm.
Described spacing 16,17 and 18 can have different sizes.
Air in described housing 25 is because the vibration being produced by the sound sending in operating motor pump unit 17 can cause, the air in multiple holes that are arranged side by side 22 as mass body together with the air in the spacing 16,17 and 18 between surface 15 and the hole wall 19,20 and 21 of reflect sound as spring according to the type vibration of Helmholtz resonator and reduced thus the sound outwards penetrating.
As shown in Figure 3, in described spacing 16-18, can be furnished with the division wall that is configured to cellular structure 23, this division wall forms multiple chambers 24.Hole 22 in hole wall 19 does not illustrate in order to simplify diagram.
By adhesive, described cellular structure 23 is not only also connected and is connected with hole wall 19 with the surface 15 of reflect sound.
Claims (13)
1. low noise hydraulic equipment, there is motor pump unit (7), described motor pump unit comprises pump (8) and drives the motor (9) of described pump (8), wherein said motor pump unit (7) is arranged in and is made up of multiple walls, in the housing (25) of sealing, multiple walls (3 in wherein said wall, 4, 5, 6) or wall there is the surface (15) of reflect sound at its housing inner side place, it is characterized in that, before the surface of one or more reflect sound in the surface (15) of described reflect sound, with a pitch arrangement the surperficial hole wall (19 that completely or partially covers described reflect sound, 20, 21), described hole wall has the about <0.3mm of multiple holes cross section in its face with distributing
2through hole (22).
2. by low noise hydraulic equipment claimed in claim 1, multiple walls (3 in wherein said wall, 4, 5) or wall form the double-wall frame member of sealing, the inner chamber of described framework is the storage vessel (1) for hydraulic pressure medium, and the multiple walls in other walls or a wall are configured to sound-proof wall (6), and the multiple walls (3 in wherein said wall, 4, 5, 6) or wall there is the surface (15) of reflect sound at its housing inner side place, it is characterized in that, before the surface of one or more reflect sound in the surface (15) of described reflect sound, with a pitch arrangement the surperficial hole wall (19 that completely or partially covers described reflect sound, 20, 21), described hole wall has the about <0.3mm of multiple holes cross section in its face with distributing
2through hole (22).
3. by hydraulic equipment claimed in claim 2, it is characterized in that, described sound-proof wall by the outer wall of the internal surface with reflect sound and inner hole wall sandwich-type form, wherein said hole wall has the about <0.3mm of multiple holes cross section
2through hole.
4. by hydraulic equipment claimed in claim 3, it is characterized in that, in a wall (6) in described wall, be furnished with in ventilating joint (12) and the wall (6) in described wall and be furnished with air draft joint (14), wherein said ventilating joint (12) and/or described air draft joint (14) form with the inner hole wall (20,21) of a pitch arrangement by the outer wall of the internal surface with reflect sound (15) with respect to described outer wall, and wherein said hole wall (20,21) has the about <0.3mm of multiple holes cross section
2through hole.
5. by hydraulic equipment claimed in claim 4, it is characterized in that, described hole (22) have large about 0.05mm to the diameter between 0.5mm.
6. by hydraulic equipment in any one of the preceding claims wherein, it is characterized in that, described hole (22) have slot-shaped cross section or circular cross section.
7. by hydraulic equipment in any one of the preceding claims wherein, it is characterized in that, described hole wall (19,20,21) with different pitch arrangement on the surface (15) of described reflect sound before.
8. by hydraulic equipment in any one of the preceding claims wherein, it is characterized in that, the cavity forming by the spacing between surface (15) and the hole wall (19,20,21) of reflect sound is divided into multiple chambers (24) by the division wall extending between the surface at described reflect sound (15) and described hole wall (19,20,21).
9. by hydraulic equipment claimed in claim 8, it is characterized in that, described division wall is fixedly connected with described wall and/or described hole wall (19,20,21).
10. by hydraulic equipment claimed in claim 9, it is characterized in that, described division wall is fixedly connected with described wall and/or described hole wall (19,20,21) by adhesive.
11. by the hydraulic equipment described in claim 8,9 or 10, it is characterized in that, described chamber (24) forms cellular structure (23).
12. by hydraulic equipment in any one of the preceding claims wherein, it is characterized in that, in cavity between surface and the hole wall of described reflect sound, be furnished with the second hole wall that one or more is arranged in parallel relative to each other, described the second hole wall has the about <0.3mm of multiple holes cross section
2through hole.
13. by hydraulic equipment in any one of the preceding claims wherein, it is characterized in that, described hole wall (19,20,21) and/or described division wall are made up of metal or plastics.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201310208455 DE102013208455A1 (en) | 2013-05-08 | 2013-05-08 | Low noise hydraulic power unit |
| DE102013208455.2 | 2013-05-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104141605A true CN104141605A (en) | 2014-11-12 |
| CN104141605B CN104141605B (en) | 2018-11-13 |
Family
ID=51787526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410189575.2A Active CN104141605B (en) | 2013-05-08 | 2014-05-07 | The hydraulic test of low noise |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104141605B (en) |
| DE (1) | DE102013208455A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156160A (en) * | 2018-11-07 | 2020-05-15 | 宁波方太厨具有限公司 | Vibration and noise reduction structure of booster pump |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11680474B2 (en) | 2019-06-13 | 2023-06-20 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing apparatus and control method thereof, fracturing system |
| CN214247597U (en) * | 2020-12-11 | 2021-09-21 | 烟台杰瑞石油装备技术有限公司 | Fracturing device |
| US11746636B2 (en) | 2019-10-30 | 2023-09-05 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing apparatus and control method thereof, fracturing system |
| CN112983806A (en) * | 2019-12-17 | 2021-06-18 | 佛山市美的清湖净水设备有限公司 | Booster pump mounting structure and water purification unit |
| US11988234B2 (en) * | 2021-06-21 | 2024-05-21 | Nott Company | Electronic pump and methods of using the same |
| DE202022104291U1 (en) | 2022-07-28 | 2023-11-02 | Reinz-Dichtungs-Gmbh | Cover for a component of an electric drive system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850093A (en) * | 1987-02-09 | 1989-07-25 | Grumman Aerospace Corporation | Method of making an acoustic attenuating liner |
| JPH09195952A (en) * | 1996-01-24 | 1997-07-29 | Matsushita Electric Works Ltd | Pump device |
| DE10227017A1 (en) * | 2002-06-17 | 2003-12-24 | Bosch Rexroth Ag | Low noise hydraulic unit has inlet passage for supply of air to motor and pump assembly constructed as separate sub-assembly and fitted through cut-out in wall of frame and mounted on another wall |
| US20040191474A1 (en) * | 2001-06-21 | 2004-09-30 | Ichiro Yamagiwa | Porous soundproof structural body and method of manufacturing the structural |
| EP1413772B1 (en) * | 2002-10-22 | 2005-11-09 | Bosch Rexroth AG | Low noise hydraulic power unit |
| CN2844492Y (en) * | 2005-07-11 | 2006-12-06 | 福建省泉州市力达机械有限公司 | Composite-plated sound absorber of multi-stage compressor |
| CN101033741A (en) * | 2006-03-10 | 2007-09-12 | 中国科学院声学研究所 | Totally-enclosed refrigerant compressor housing having lumen coupled resonance sound absorption structure sandwich |
| DE102009017300A1 (en) * | 2008-09-03 | 2010-03-04 | Robert Bosch Gmbh | Low-noise hydraulic assembly, has motor and pump accommodated in common housing, which is formed as sound-proofing enclosure, and active sound absorption system arranged within sound-proofing enclosure |
-
2013
- 2013-05-08 DE DE201310208455 patent/DE102013208455A1/en not_active Ceased
-
2014
- 2014-05-07 CN CN201410189575.2A patent/CN104141605B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850093A (en) * | 1987-02-09 | 1989-07-25 | Grumman Aerospace Corporation | Method of making an acoustic attenuating liner |
| JPH09195952A (en) * | 1996-01-24 | 1997-07-29 | Matsushita Electric Works Ltd | Pump device |
| US20040191474A1 (en) * | 2001-06-21 | 2004-09-30 | Ichiro Yamagiwa | Porous soundproof structural body and method of manufacturing the structural |
| DE10227017A1 (en) * | 2002-06-17 | 2003-12-24 | Bosch Rexroth Ag | Low noise hydraulic unit has inlet passage for supply of air to motor and pump assembly constructed as separate sub-assembly and fitted through cut-out in wall of frame and mounted on another wall |
| EP1413772B1 (en) * | 2002-10-22 | 2005-11-09 | Bosch Rexroth AG | Low noise hydraulic power unit |
| CN2844492Y (en) * | 2005-07-11 | 2006-12-06 | 福建省泉州市力达机械有限公司 | Composite-plated sound absorber of multi-stage compressor |
| CN101033741A (en) * | 2006-03-10 | 2007-09-12 | 中国科学院声学研究所 | Totally-enclosed refrigerant compressor housing having lumen coupled resonance sound absorption structure sandwich |
| DE102009017300A1 (en) * | 2008-09-03 | 2010-03-04 | Robert Bosch Gmbh | Low-noise hydraulic assembly, has motor and pump accommodated in common housing, which is formed as sound-proofing enclosure, and active sound absorption system arranged within sound-proofing enclosure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156160A (en) * | 2018-11-07 | 2020-05-15 | 宁波方太厨具有限公司 | Vibration and noise reduction structure of booster pump |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013208455A1 (en) | 2014-11-13 |
| CN104141605B (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104141605A (en) | A low-noise hydraulic device | |
| US8919491B2 (en) | Silencer device for a fluid line and heating unit having a silencer device | |
| ES2781870T3 (en) | Fume extractor hood | |
| WO2008010554A1 (en) | Solid-borne sound reduction structure | |
| JP2012520962A5 (en) | ||
| US10334353B2 (en) | Loudspeaker module and electronic product | |
| CN110285495A (en) | A kind of vibration isolation sound arrester and air-conditioner outdoor unit | |
| JPH0297877A (en) | Silencer for cooling device | |
| CN105275782A (en) | Noise control device for air conditioner compressor | |
| CN104567229A (en) | Refrigerating device | |
| JP2010206338A (en) | Flat speaker | |
| CN105244015A (en) | Accommodation device with sound absorbing function | |
| JP2015227939A (en) | Resonant type sound absorber | |
| CN202008829U (en) | Multipurpose broadband sound absorber module | |
| CN220505265U (en) | Noise reduction structure, compressor and refrigeration equipment | |
| CN203145222U (en) | Compound resonance plane acoustical board | |
| WO2018121565A1 (en) | Refrigerator and compressor-bin denoising device thereof | |
| JP2013181714A (en) | Muffling device | |
| JP2010007720A (en) | Vacuum thermal-insulating material | |
| JP2013236197A (en) | Electrodynamic sound emitting body | |
| US20170061947A1 (en) | Charged Particle Radiation Apparatus | |
| JP5251590B2 (en) | Flat speaker | |
| JP2014119148A (en) | Air conditioner outdoor unit | |
| CN203771587U (en) | Noise prevention box of outdoor air exchange device | |
| CN216414572U (en) | Combined sound box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |