CN107178510A - Centrifugal compressor - Google Patents
Centrifugal compressor Download PDFInfo
- Publication number
- CN107178510A CN107178510A CN201710589323.2A CN201710589323A CN107178510A CN 107178510 A CN107178510 A CN 107178510A CN 201710589323 A CN201710589323 A CN 201710589323A CN 107178510 A CN107178510 A CN 107178510A
- Authority
- CN
- China
- Prior art keywords
- rotary shaft
- side rotary
- dividing plate
- housing
- motor
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
Abstract
The invention discloses a kind of centrifugal compressor, the centrifugal compressor includes housing section.Housing section includes support housing, volute, main dividing plate and motor section housing.Volute and motor section housing are respectively provided at the horizontal both sides of support housing, and lumen is limited between volute and support housing, and the bottom of lumen constitutes shoe cream room, and main dividing plate is located in lumen, and the part between main dividing plate and support housing constitutes separate space.Compressed side rotary shaft, compressed side rotary shaft is rotatably engaged in volute, and one end of compressed side rotary shaft is extend into separate space after sequentially passing through volute, main dividing plate.Motor side rotary shaft, motor side rotary shaft is rotatably engaged in motor section housing, and one end of motor side rotary shaft is through support housing and extend into separate space, and motor side rotary shaft is meshed transmission with compressed side rotary shaft in separate space.Centrifugal compressor according to embodiments of the present invention, reduces the noise that compression operation is outwards propagated, improves the usage comfort of user.
Description
Technical field
The present invention relates to compressor apparatus field, more particularly to a kind of centrifugal compressor.
Background technology
In large-scale heavy duty refrigeration centrifugal compressor, injury of the noise that the gear of rotation is produced at a high speed to people is very big
's.The body structure of existing centrifugal compressor can not reduce the noise of gear generation.The noise that gear engagement is produced directly leads to
Cross box body wall to transmit to surrounding, noise is larger, client's usage experience sense is poor.Existing technology is dropped using increase casing wall thickness
Low noise, but reduce the effect of noise and bad by the way of increase wall thickness, the rigidity of casing is also reduced, pressure is improved
The production cost of contracting machine.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention is directed to propose one
Centrifugal compressor is planted, the gear mesh gearing noise of the centrifugal compressor is smaller, and the rigidity of structure of casing is higher.
Centrifugal compressor according to embodiments of the present invention, including：Housing section, the housing section includes：Support housing, whirlpool
Shell, main dividing plate and motor section housing, the volute and the motor section housing are respectively provided at the horizontal both sides of the support housing,
Lumen is limited between the volute and the support housing, the bottom of the lumen constitutes shoe cream room, and the main dividing plate is located at
In the lumen, the part between the main dividing plate and the support housing constitutes separate space；Compressed side rotary shaft, the compressed side
Rotary shaft is rotatably engaged in the volute, and one end of the compressed side rotary shaft sequentially passes through the volute, the master
It is extend into after dividing plate in the separate space；Motor side rotary shaft, the motor side rotary shaft is rotatably engaged in the motor section
In housing, one end of the motor side rotary shaft passes through the support housing and extend into the separate space；In the separate space
The motor side rotary shaft is meshed transmission with the compressed side rotary shaft.
Centrifugal compressor according to embodiments of the present invention, due to being provided with main dividing plate between volute and support housing, and
And kept apart motor side rotary shaft with the compressed side rotary shaft place of being meshed using main dividing plate, greatly decayed engaged transmission
Noise, reduces the noise outwards propagated during compressor operating, improves the usage comfort of user.In addition, main dividing plate can also
Housing section to compressor plays booster action, improves the rigidity and reliability of housing section.
In certain embodiments, the main dividing plate is the axially spaced sandwich construction being arranged in the lumen of turning up the soil.
In certain embodiments, the centrifugal compressor also includes time dividing plate, and described dividing plate is located at the main dividing plate
On.
Specifically, described dividing plate is the radially spaced sandwich construction being arranged in the lumen of turning up the soil.
In certain embodiments, a part for the support housing is formed as bearing block, and the compressed side rotary shaft passes through
Spring bearing coordinates on the bearing block, and the motor side rotary shaft is located at the top of the compressed side rotary shaft, the master
Dividing plate is located at the top of the bearing block.
Specifically, the bearing block is provided with the oil duct for being used for lubricating the compressed side rotary shaft.
In certain embodiments, the centrifugal compressor also includes the heating dress for being used to heat the shoe cream room
Put.
Specifically, the heater is located on the support housing and positioned at the lower section of the motor section housing, described
The fire end of heater is extend into the shoe cream room.
In certain embodiments, the part being meshed with the motor side rotary shaft of the compressed side rotary shaft is formed as
Gear shaft, the part being meshed with the compressed side rotary shaft of the motor side rotary shaft is provided with travelling gear.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the structural representation of the centrifugal compressor of the embodiment of the present invention.
Fig. 2 is the part sectioned view along C-C directions in Fig. 1.
Reference：
Centrifugal compressor 100,
Housing section 1, support housing 11, bearing block 111, volute 12, main dividing plate 13, motor section housing 14,
Lumen 2, separate space 21, shoe cream room 22,
Compressed side rotary shaft 3,
Motor side rotary shaft 4,
Heater 5.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
The structure of centrifugal compressor 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 2.
As depicted in figs. 1 and 2, centrifugal compressor 100 according to embodiments of the present invention includes housing section 1, compression sidespin
Rotating shaft 3 and motor side rotary shaft 4.
Housing section 1 includes support housing 11, volute 12, main dividing plate 13 and motor section housing 14.Volute 12 and motor section shell
Body 14 is respectively provided at the horizontal both sides of support housing 11, and lumen 2, the bottom of lumen 2 are limited between volute 12 and support housing 11
Portion constitutes shoe cream room 22, and main dividing plate 13 is located in lumen 2, and the part between main dividing plate 13 and support housing 11 constitutes separate space 21.
Compressed side rotary shaft 3 is rotatably engaged in volute 12, and one end of compressed side rotary shaft 3 sequentially passes through volute 12, main dividing plate
It is extend into after 13 in separate space 21, motor side rotary shaft 4 is rotatably engaged in motor section housing 14, motor side rotary shaft 4
One end is through support housing 11 and extend into separate space 21, and motor side rotary shaft 4 is mutually nibbled with compressed side rotary shaft 3 in separate space 21
Close transmission.
It is understood that the place that motor side rotary shaft 4 is meshed with compressed side rotary shaft 3 is kept apart by separate space 21
Come, the noise of engaged transmission, which needs to sequentially pass through separate space 21, main dividing plate 13, lumen 2 and volute 12, gets to compressor housing
Outside, separate space 21 and main dividing plate 13 serve the effect of abatement and isolation to noise, so that engaged transmission noise is very big
Decay to limit, reduce injury of the engaged transmission noise to human body, improve the usage comfort of user.In addition, main dividing plate
13 can also play booster action to housing section 1, improve the rigidity and reliability of housing section 1.
Centrifugal compressor 100 according to embodiments of the present invention, due to being provided with master between volute 12 and support housing 11
Dividing plate 13, and kept apart motor side rotary shaft 4 with the place of being meshed of compressed side rotary shaft 3 using main dividing plate 13, greatly
The engaged transmission that decayed noise, reduces the noise outwards propagated during compressor operating, improves the usage comfort of user.This
Outside, main dividing plate 13 can also play booster action to the housing section 1 of compressor, improve the rigidity and reliability of housing section 1.
Alternatively, main dividing plate 13 and the cavity that the separate space 21 of the support formation of housing 11 is closing.Thus, it is possible to strengthen separate space
21 pairs of engaged transmission noise alleviation effects.
In certain embodiments, main dividing plate 13 is the axially spaced sandwich construction being arranged in lumen 2 of turning up the soil.Thus,
In the axial direction, main dividing plate 13 can form multiple axially spaced chambers in lumen 2, and multiple axially spaced chambers can be passed to engagement
Dynamic noise repeatedly cut down and isolate, and enhances engaged transmission noise alleviation amplitude so that propagate to the outside of housing section 1
Noise is smaller.
In certain embodiments, centrifugal compressor 100 also includes time dividing plate (not shown), and secondary dividing plate is located at main dividing plate
On 13.Here, secondary dividing plate can be arranged between main dividing plate 13 and support housing 11, and secondary dividing plate can also be arranged on main dividing plate 13
Between volute 12.When main dividing plate 13 is sandwich construction, secondary dividing plate can also be arranged between the sandwich construction of main dividing plate 13.
Specifically, secondary dividing plate can be the radially spaced sandwich construction being arranged in lumen 2 of turning up the soil.Thus, radially
On direction, secondary dividing plate can coordinate main dividing plate 13 and multiple separate spaces will be formed in lumen 2, and multiple separate spaces can increase to engagement
The abatement number of times and isolation effect of drive noise, enhance engaged transmission noise alleviation amplitude so that propagate to outside housing section 1
The noise of side is smaller.
In some alternatively embodiment, septum secundum plate shape into secondary separate space for closing cavity, thus, it is possible to further increase
Strong time separate space is acted on engaged transmission noise alleviation.
In the description of the invention, it is to be understood that the orientation or position relationship of the instruction such as term " axial direction ", " radial direction "
For based on orientation shown in the drawings or position relationship, be for only for ease of description the present invention and simplify description, rather than indicate or
Specific orientation must be had, with specific azimuth configuration and operation by implying the device or element of meaning, therefore it is not intended that
Limitation of the present invention.
In certain embodiments, a part for support housing 11 is formed as bearing block 111, and compressed side rotary shaft 3 passes through branch
Bearing fit is supportted on bearing block 111, motor side rotary shaft 4 is located at the top of compressed side rotary shaft 3, main dividing plate 13 is located at bearing
The top of seat 111.
It is understood that the lower section of bearing block 111 is provided with shoe cream room 22, when compressor is in normal operation, store up
Lubricating oil is filled with oil pocket 22, liquid inherently has good attenuation to noise, therefore can in the lower of bearing block 111
Main dividing plate 13 need not be set, it is only necessary to which the top for being located at bearing block 111 in main dividing plate 13 sets main dividing plate 13, thus reduces
The production cost of housing section 1.
Specifically, bearing block 111 is provided with the oil duct for being used for lubricating compressed side rotary shaft 3, so as to improve lubricant effect.
In certain embodiments, centrifugal compressor 100 also includes the heater for being used to heat shoe cream room 22
5。
Specifically, heater 5 is located on support housing 11 and positioned at the lower section of motor section housing 14, heater 5
Fire end is extend into shoe cream room 22.
It should be noted that when compressor is shut down needs for a long time and quickly started, compressor assembly lubricating oil needs full
The certain temperature requirement of foot, to reduce the refrigerant contained in lubricating oil to needing the harmful effect of the transmission system of oil lubrication,
Efficient, uniform heating is also carried out to oil in a short time simultaneously, to meet customer need.
Thus, support housing 11 on and positioned at motor section housing 14 lower section set directly go deep into shoe cream room 22 adding
Thermal 5, is conducive to quickly heating the lubricating oil in shoe cream room 22, especially after being sent a telegram in reply when compressor, heating dress
Putting 5 can quickly be heated to lubricating oil, it is ensured that the temperature of lubricating oil can relatively quickly reach use requirement in oil pocket.
In certain embodiments, the part being meshed with motor side rotary shaft 4 of compressed side rotary shaft 3 is formed as gear
Axle, the part being meshed with compressed side rotary shaft 3 of motor side rotary shaft 4 is provided with travelling gear.
Certainly, the structure of compressed side rotary shaft 3 and motor side rotary shaft 4 is not limited to aforesaid way, can also there is other
The part being meshed with motor side rotary shaft 4 of mode, such as compressed side rotary shaft 3 is formed as gear shaft, motor side rotary shaft 4
The part being meshed with compressed side rotary shaft 3 be formed as gear shaft.In another example compressed side rotary shaft 3 with motor side rotary shaft
4 parts being meshed are provided with travelling gear, and the part being meshed with compressed side rotary shaft 3 of motor side rotary shaft 4 is provided with transmission
Gear.
The centrifugal compressor 100 of a specific embodiment of the invention is described below with reference to Fig. 1-Fig. 2.
As Figure 1-Figure 2, the centrifugal compressor 100 of the present embodiment includes housing section 1, compressed side rotary shaft 3, motor
Sidespin rotating shaft 4 and heater 5.
Housing section 1 includes support housing 11, volute 12, main dividing plate 13 and motor section housing 14.Volute 12 and motor section shell
Body 14 is respectively provided at the horizontal both sides of support housing 11, and lumen 2, the bottom of lumen 2 are limited between volute 12 and support housing 11
Portion constitutes shoe cream room 22, and main dividing plate 13 is located in lumen 2, and the part between main dividing plate 13 and support housing 11 constitutes separate space 21.
A part for support housing 11 is formed as bearing block 111, and compressed side rotary shaft 3 is coordinated in bearing by spring bearing
On seat 111, motor side rotary shaft 4 is located at the top of compressed side rotary shaft 3, and main dividing plate 13 is located at the top of bearing block 111, bearing
Seat 111 is also provided with the oil duct for being used for lubricating compressed side rotary shaft 3
Compressed side rotary shaft 3 is rotatably engaged in volute 12, and one end of compressed side rotary shaft 3 sequentially passes through volute
12nd, motor side rotary shaft 4 in separate space 21 is extend into after main dividing plate 13 to be rotatably engaged in motor section housing 14.
One end of motor side rotary shaft 4 is through support housing 11 and extend into separate space 21, the motor sidespin in separate space 21
Rotating shaft 4 is meshed transmission with compressed side rotary shaft 3.The part being meshed with motor side rotary shaft 4 of compressed side rotary shaft 3 is formed
For gear shaft.
Heater 5 is located on support housing 11 and positioned at the lower section of motor section housing 14, and the fire end of heater 5 is stretched
Enter into shoe cream room 22.The part being meshed with compressed side rotary shaft 3 of motor side rotary shaft 4 is provided with travelling gear.
The centrifugal compressor 100 of the present embodiment is repeatedly effective by setting main dividing plate 13 to carry out gear engagement noise
Abatement and isolate, by gear engagement noise Restraining seal in box system, its noise to external radiation is decayed to greatest extent,
So as to reduce injury of the compressor gear engagement noise to people, customer experience is improved.With after mainboard to compressor housing
Intensity has structural strengthening effect, improves the rigidity and reliability in compressor housing portion 1.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (9)
1. a kind of centrifugal compressor, it is characterised in that including：
Housing section, the housing section includes：Support housing, volute, main dividing plate and motor section housing, the volute and the motor
Portion's housing is respectively provided at the horizontal both sides of the support housing, limits lumen between the volute and the support housing, institute
The bottom for stating lumen constitutes shoe cream room, and the main dividing plate is located in the lumen, between the main dividing plate and the support housing
Part constitute separate space；
Compressed side rotary shaft, the compressed side rotary shaft is rotatably engaged in the volute, the compressed side rotary shaft
One end is extend into the separate space after sequentially passing through the volute, the main dividing plate；
Motor side rotary shaft, the motor side rotary shaft is rotatably engaged in the motor section housing, the motor sidespin
One end of rotating shaft is through the support housing and extend into the separate space；
The motor side rotary shaft is meshed transmission with the compressed side rotary shaft in the separate space.
2. centrifugal compressor according to claim 1, it is characterised in that the main dividing plate is that axially spaced turn up the soil sets
Put the sandwich construction in the lumen.
3. the centrifugal compressor according to claims 1 or 2, it is characterised in that also including secondary dividing plate, described dividing plate
It is located on the main dividing plate.
4. centrifugal compressor according to claim 3, it is characterised in that described dividing plate is that radially spaced turn up the soil sets
Put the sandwich construction in the lumen.
5. centrifugal compressor according to claim 1 a, it is characterised in that part for the support housing is formed as axle
Bearing, the compressed side rotary shaft is coordinated on the bearing block by spring bearing, and the motor side rotary shaft is located at described
The top of compressed side rotary shaft, the main dividing plate is located at the top of the bearing block.
6. centrifugal compressor according to claim 5, it is characterised in that the bearing block, which is provided with, to be used for the pressure
The oil duct of contracting sidespin rotating shaft lubrication.
7. centrifugal compressor according to claim 1, it is characterised in that also including for being added to the shoe cream room
The heater of heat.
8. centrifugal compressor according to claim 7, it is characterised in that the heater is located at the support housing
Lower section upper and positioned at the motor section housing, the fire end of the heater is extend into the shoe cream room.
9. centrifugal compressor according to claim 1, it is characterised in that the compressed side rotary shaft with the motor
The part that sidespin rotating shaft is meshed is formed as gear shaft, and the motor side rotary shaft is meshed with the compressed side rotary shaft
Part is provided with travelling gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710589323.2A CN107178510A (en) | 2017-07-19 | 2017-07-19 | Centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710589323.2A CN107178510A (en) | 2017-07-19 | 2017-07-19 | Centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107178510A true CN107178510A (en) | 2017-09-19 |
Family
ID=59838417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710589323.2A Pending CN107178510A (en) | 2017-07-19 | 2017-07-19 | Centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107178510A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202381140U (en) * | 2011-11-27 | 2012-08-15 | 何良智 | Elastic pneumatic buffering baffle plate in silencer |
| CN202441450U (en) * | 2012-02-08 | 2012-09-19 | 河北华强科技开发有限公司 | Muffler |
| CN203516222U (en) * | 2013-09-06 | 2014-04-02 | 乐金空调(山东)有限公司 | Noise reduction device of centrifugal compressor |
| CN204402923U (en) * | 2014-12-29 | 2015-06-17 | 西安航志机电设备科技有限公司 | A kind of low noise liquid-ring vacuum pump |
| US9200567B2 (en) * | 2009-07-23 | 2015-12-01 | Cummins Turbo Technologies Limited | Compressor, turbine and turbocharger |
| CN105298871A (en) * | 2014-06-23 | 2016-02-03 | 重庆美的通用制冷设备有限公司 | Cantilever centrifugal compressor |
| CN105458262A (en) * | 2016-02-01 | 2016-04-06 | 哈尔滨工程大学 | Multi-layer noise elimination/vibration reduction structure and method for manufacturing noise elimination/vibration reduction structure through 3D printing technology |
| US20170022999A1 (en) * | 2015-03-27 | 2017-01-26 | Dresser-Rand Company | Electrically heated balance piston seal |
| CN106555638A (en) * | 2015-09-25 | 2017-04-05 | 石家庄博鼎机电设备有限公司 | A kind of iris type casing muffler |
-
2017
- 2017-07-19 CN CN201710589323.2A patent/CN107178510A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9200567B2 (en) * | 2009-07-23 | 2015-12-01 | Cummins Turbo Technologies Limited | Compressor, turbine and turbocharger |
| CN202381140U (en) * | 2011-11-27 | 2012-08-15 | 何良智 | Elastic pneumatic buffering baffle plate in silencer |
| CN202441450U (en) * | 2012-02-08 | 2012-09-19 | 河北华强科技开发有限公司 | Muffler |
| CN203516222U (en) * | 2013-09-06 | 2014-04-02 | 乐金空调(山东)有限公司 | Noise reduction device of centrifugal compressor |
| CN105298871A (en) * | 2014-06-23 | 2016-02-03 | 重庆美的通用制冷设备有限公司 | Cantilever centrifugal compressor |
| CN204402923U (en) * | 2014-12-29 | 2015-06-17 | 西安航志机电设备科技有限公司 | A kind of low noise liquid-ring vacuum pump |
| US20170022999A1 (en) * | 2015-03-27 | 2017-01-26 | Dresser-Rand Company | Electrically heated balance piston seal |
| CN106555638A (en) * | 2015-09-25 | 2017-04-05 | 石家庄博鼎机电设备有限公司 | A kind of iris type casing muffler |
| CN105458262A (en) * | 2016-02-01 | 2016-04-06 | 哈尔滨工程大学 | Multi-layer noise elimination/vibration reduction structure and method for manufacturing noise elimination/vibration reduction structure through 3D printing technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1887197B1 (en) | A generator set | |
| CN105378290B (en) | The use of Axial Flow Compressor and Axial Flow Compressor | |
| CN206517235U (en) | Motor structure with heat radiation function | |
| CN104929956B (en) | Motor-driven turbo compressor | |
| CN107848398A (en) | In-wheel motor drive unit | |
| CN107178510A (en) | Centrifugal compressor | |
| CN106838267A (en) | A kind of good damping effect and the convenient reductor installed | |
| CN103629333A (en) | Lubricating device for speed reducer | |
| CN103649550B (en) | Turbo-compressor | |
| CN107709788B (en) | Encapsulation type air-cooled type screw compressor | |
| CN106122459A (en) | A kind of sewage disposal turbine gear-box | |
| CN107178808B (en) | Integrated kitchen | |
| CN110529581A (en) | A kind of wall-breaking machine Dual-spindle linked gear-box | |
| CN206112037U (en) | Sewage treatment turbine gear box | |
| CN102808794B (en) | Tower type transversely-swinging electric fan | |
| CN205956059U (en) | Automotive water pump | |
| CN210246409U (en) | Motor assembling structure and compressor | |
| CN209131282U (en) | Wildness hazel-mushroom air-drying device | |
| CN204591819U (en) | Electric rocking fan | |
| CN107476976A (en) | Scroll compressor and compressor system | |
| CN106609756B (en) | A kind of compressor | |
| CN206507818U (en) | A kind of inner cylinder reversible type beater | |
| CN207634618U (en) | Reduction box of massage chair | |
| CN206682009U (en) | The tower electric fan of double wind wheel | |
| CN106460843B (en) | Two-stage screw compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170919 |
|
| RJ01 | Rejection of invention patent application after publication |