CN112594198A - Small-sized high-pressure-ratio centrifugal compressor - Google Patents
Small-sized high-pressure-ratio centrifugal compressor Download PDFInfo
- Publication number
- CN112594198A CN112594198A CN202110038164.3A CN202110038164A CN112594198A CN 112594198 A CN112594198 A CN 112594198A CN 202110038164 A CN202110038164 A CN 202110038164A CN 112594198 A CN112594198 A CN 112594198A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- main body
- compressor main
- pressure ratio
- high pressure
- 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
Images
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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/90—Devices for taking out of action one or more units of multi-unit filters, e.g. for regeneration or maintenance
-
- 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
- F04D29/40—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
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of centrifugal compressors, in particular to a small-sized high-pressure-ratio centrifugal compressor which comprises a compressor main body, wherein an air inlet is formed in the inner side of the front end of the compressor main body, an adjusting and connecting device is communicated with the outlet end of the compressor main body, and a filtering device is fixedly connected with the front end of the compressor main body. And when one filter screen is cleaned, the other filter screen can also work normally.
Description
Technical Field
The invention relates to the technical field of centrifugal compressors, in particular to a small-sized high-pressure-ratio centrifugal compressor.
Background
The centrifugal compressor with high pressure ratio is divided into radial flow type (centrifugal type) and axial flow type, the centrifugal compressor is suitable for medium and small production quantity, has high rotating speed but low efficiency, has the characteristics of small volume, high single-stage supercharging ratio and the like, is widely applied to power systems in the fields of aviation, ships and the like, and the axial flow type compressor has compact structure, is convenient to arrange more stages, has high efficiency and is suitable for occasions with large flow.
Most of the high-pressure ratio centrifugal compressors existing in the market at present are simple in structure and single in function, the connecting direction of the air outlets of the general high-pressure ratio centrifugal compressors is fixed and unchangeable, the general high-pressure ratio centrifugal compressors cannot be adjusted according to actual installation conditions, and foreign matters cannot be filtered because the inlet of the general high-pressure ratio centrifugal compressors is not provided with a filtering device, so that the small-sized high-pressure ratio centrifugal compressors are provided for solving the problems.
Disclosure of Invention
The invention aims to provide a small-sized high-pressure-ratio centrifugal compressor to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a small-sized high-pressure-ratio centrifugal compressor comprises a compressor main body, wherein an air inlet is formed in the inner side of the front end of the compressor main body, the outlet end of the compressor main body is communicated with an adjusting and connecting device, a filtering device is fixedly connected to the front end of the compressor main body and arranged at the front end of the air inlet, and an installation device is fixedly connected to the outer side of the compressor main body.
Preferably, adjust connecting device and include guide bar, spacing seat, first dead screw, set casing, sealing ring, spherical shell and connecting pipe, the exit end intercommunication of compressor main part has the set casing, the inboard fixedly connected with sealing ring of set casing, the inboard rotation of sealing ring is connected with the spherical shell, the other end intercommunication of spherical shell has the connecting pipe.
Preferably, the top of set casing rotates and is connected with spacing seat, the inboard sliding connection of spacing seat has the guide bar, the inboard screwed connection in top of spacing seat has first dead screw of lock, and first dead screw and guide bar laminating, and guide bar and connecting pipe fixed connection.
Preferably, the center of the rotation circle of the guide rod is the same as the center of the rotation circle of the spherical shell.
Preferably, filter equipment includes intake pipe, fixed frame, motor, bearer bar, adjusting screw, slide, first fixed plate, filter screen and second fixed plate, the front end fixedly connected with intake pipe of compressor main part, the fixed frame of the equal fixedly connected with in both ends of intake pipe, the rear end fixedly connected with bearer bar of fixed frame, the inboard fixedly connected with motor of bearer bar, the terminal fixedly connected with adjusting screw of main shaft of motor, and adjusting screw rotate with the intake pipe to be connected, adjusting screw's outside screwed connection has the slide, the first fixed plate of one end fixedly connected with of slide, the other end fixedly connected with filter screen of first fixed plate, and filter screen and intake pipe sliding connection, the other end fixedly connected with second fixed plate of filter screen.
Preferably, the number of the filter screens is two in total, and the filter screens are distributed in a staggered manner from front to back.
Preferably, the installation device includes mount pad, stopper, the dead screw of second lock, connecting axle and installation piece, the outside fixedly connected with mount pad of compressor main part, the inboard sliding connection of mount pad has the installation piece, the one end fixedly connected with connecting axle of installation piece, the other end fixedly connected with stopper of connecting axle, the inboard screwed connection of stopper has the dead screw of second lock, and the dead screw of second lock and the laminating of mount pad.
Preferably, the number of the mounting blocks is three in total, and the mounting blocks are uniformly distributed on the periphery of the compressor main body.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the guide rod, the limiting seat, the first locking screw, the fixing shell, the sealing ring, the spherical shell and the connecting pipe, a worker can adjust the connecting direction of the connecting pipe according to the actual connecting requirement of the connecting pipe, so that the connecting pipe can be adjusted to any direction, and the using requirement of the worker is met.
2. According to the invention, through the arrangement of the air inlet pipe, the fixing frame, the motor, the protection frame, the adjusting screw rod, the sliding plate, the first fixing plate, the filter screen and the second fixing plate, on one hand, foreign matters can be intercepted through the filter screen, on the other hand, the filter screen can be cleaned through adjusting the position of the filter screen, and when one filter screen is cleaned, the other filter screen can also work normally.
3. According to the invention, through the arrangement of the mounting seat, the limiting block, the second locking screw, the connecting shaft and the mounting block, a worker can adjust the position of the mounting seat according to the position of the mounting hole on the equipment, so that the mounting seat is aligned with the mounting hole, the adaptability of the invention is improved, the operation is simple, and the use by the worker is convenient.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal mounting structure of the adjusting linkage of the present invention;
FIG. 3 is a schematic view of the internal side view mounting arrangement of the filter apparatus of the present invention;
FIG. 4 is a schematic side view of the limiting block of the present invention;
FIG. 5 is a schematic view of the structure at A of FIG. 1 according to the present invention.
In the figure: 1-adjusting connecting device, 101-guide rod, 102-limiting seat, 103-first locking screw, 104-fixing shell, 105-sealing ring, 106-spherical shell, 107-connecting pipe, 2-filtering device, 201-air inlet pipe, 202-fixing frame, 203-motor, 204-protecting frame, 205-adjusting screw, 206-sliding plate, 207-first fixing plate, 208-filtering net, 209-second fixing plate, 3-mounting device, 301-mounting seat, 302-limiting block, 303-second locking screw, 304-connecting shaft, 305-mounting block, 4-compressor main body and 5-air inlet.
Detailed Description
Referring to fig. 1-5, the present invention provides a technical solution:
a small-sized high-pressure-ratio centrifugal compressor comprises a compressor main body 4, wherein an air inlet 5 is formed in the inner side of the front end of the compressor main body 4, an adjusting and connecting device 1 is communicated with the outlet end of the compressor main body 4, a filtering device 2 is fixedly connected to the front end of the compressor main body 4, the filtering device 2 is arranged at the front end of the air inlet 5, and a mounting device 3 is fixedly connected to the outer side of the compressor main body 4.
The adjusting and connecting device 1 comprises a guide rod 101, a limiting seat 102, a first locking screw 103, a fixed shell 104, a sealing ring 105, a spherical shell 106 and a connecting pipe 107, the outlet end of the compressor main body 4 is communicated with the fixed shell 104, the inner side of the fixed shell 104 is fixedly connected with the sealing ring 105, the inner side of the sealing ring 105 is rotatably connected with the spherical shell 106, the other end of the spherical shell 106 is communicated with the connecting pipe 107, the sealing performance between the fixed shell 104 and the spherical shell 106 can be ensured through the sealing ring 105, the top end of the fixed shell 104 is rotatably connected with the limiting seat 102, the inner side of the limiting seat 102 is slidably connected with the guide rod 101, the inner side of the top end of the limiting seat 102 is spirally connected with the first locking screw 103, the first locking screw 103 is attached to the guide rod 101, the guide rod 101 is fixedly connected with the connecting pipe 107, and the guide rod 101 and the limiting seat 102 can be fixed through the, the rotation centre of a circle of guide bar 101 is the same with the rotation centre of a circle of spherical shell 106, guarantees the normal slip of guide bar 101 at spacing seat 102 inboard, filter equipment 2 includes intake pipe 201, fixed frame 202, motor 203, bearer bar 204, adjusting screw 205, slide 206, first fixed plate 207, filter screen 208 and second fixed plate 209, the front end fixedly connected with intake pipe 201 of compressor main part 4, the both ends of intake pipe 201 all fixedly connected with fixed frame 202, the rear end fixedly connected with bearer bar 204 of fixed frame 202, the inboard fixedly connected with motor 203 of bearer bar 204, the terminal fixedly connected with adjusting screw 205 of main shaft of motor 203, and adjusting screw 205 and intake pipe 201 rotate and be connected, the outside screwed connection of adjusting screw 205 has slide 206, the one end fixedly connected with first fixed plate 207 of slide 206, the other end fixedly connected with filter screen 208 of first fixed plate 207, and the filter screen 208 is connected with the air inlet pipe 201 in a sliding manner, the other end of the filter screen 208 is fixedly connected with a second fixing plate 209, the number of the filter screens 208 is two, the filter screens 208 are distributed in a front-back staggered manner, foreign matters can be intercepted through the filter screen 208, and when one of the filter screens 208 is cleaned, the other filter screen 208 can normally work, the mounting device 3 comprises a mounting seat 301, a limiting block 302, a second locking screw 303, a connecting shaft 304 and a mounting block 305, the outer side of the compressor main body 4 is fixedly connected with the mounting seat 301, the inner side of the mounting seat 301 is connected with the mounting block 305 in a sliding manner, one end of the mounting block 305 is fixedly connected with the connecting shaft 304, the other end of the connecting shaft 304 is fixedly connected with the limiting block 302, the inner side of the limiting block 302 is spirally connected with the second locking screw 303, and the, the number of the mounting blocks 305 is three, and the mounting blocks are uniformly distributed around the compressor main body 4, so that the compressor main body 4 can be conveniently mounted and fixed.
The working process is as follows: when the invention is used, firstly, an external power supply supplies power, firstly, the compressor body 4 is fixed on external equipment through the mounting device 3, a worker firstly adjusts the position of the mounting block 305, the worker drives the connecting shaft 304 and the mounting block 305 to rotate on the inner side of the mounting seat 301 through the limiting block 302 until the mounting seat 301 is in a proper position, then the limiting block 302 is connected with the mounting seat 301 through the second locking screw 303 to ensure that the limiting block 302 and the mounting seat 301 cannot slide relatively, then the mounting block 305 is fixedly connected with the external equipment through the external bolt, then the worker adjusts the connecting direction of the connecting pipe 107, the worker drives the spherical shell 106 to rotate on the inner side of the sealing ring 105 through the connecting pipe 107, simultaneously, the connecting pipe 107 also drives the guide rod 101 to slide on the inner side of the limiting seat 102, and simultaneously, the limiting seat 102 also rotates on the outer side of the fixed shell 104, until the connecting pipe 107 is at a proper connecting angle, then a worker is attached to the guide rod 101 through the first locking screw 103 to limit and fix the guide rod 101, then the air compressor is fixedly connected with external equipment through the connecting pipe 107, foreign matters can be intercepted through the filter screen 208 in the using process, and can be prevented from entering the inner side of the air compressor main body 4, when the filter screen 208 on the inner side of the air inlet pipe 201 needs to be cleaned, the worker firstly extends the filter screen 208 on the outer side of the air inlet pipe 201 into the inner side of the air inlet pipe 201, the worker drives the adjusting screw 205 to spirally rotate on the inner side of the sliding plate 206 through the corresponding motor 203, so that the sliding block 206 drives the filter screen 208 and the second fixing plate 209 to slide towards the inner side of the air inlet pipe 201 through the first fixing plate 207 until the filter screen 208 is clamped with the air inlet pipe 201 through the second fixing, work is carried out through the filter screen 208, then the filter screen 208 on the inner side of the air inlet pipe 201 is taken out from the inner side of the air inlet pipe 201 to be cleaned according to the opposite steps, the operation is simple, and the use of workers is convenient.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (8)
1. A small-sized high pressure ratio centrifugal compressor comprises a compressor main body (4), and is characterized in that: the air inlet (5) is formed in the inner side of the front end of the air compressor main body (4), the outlet end of the air compressor main body (4) is communicated with the adjusting and connecting device (1), the filtering device (2) is fixedly connected to the front end of the air compressor main body (4), the filtering device (2) is arranged at the front end of the air inlet (5), and the mounting device (3) is fixedly connected to the outer side of the air compressor main body (4).
2. A compact high pressure ratio centrifugal compressor as claimed in claim 1 wherein: adjusting connecting device (1) and including guide bar (101), spacing seat (102), first dead screw (103), set casing (104), sealing ring (105), spherical shell (106) and connecting pipe (107), the exit end intercommunication of compressor main part (4) has set casing (104), the inboard fixedly connected with sealing ring (105) of set casing (104), the inboard rotation of sealing ring (105) is connected with spherical shell (106), the other end intercommunication of spherical shell (106) has connecting pipe (107).
3. A compact high pressure ratio centrifugal compressor as claimed in claim 2 wherein: the top of set casing (104) rotates and is connected with spacing seat (102), the inboard sliding connection of spacing seat (102) has guide bar (101), the inboard spiral connection in top of spacing seat (102) has first dead screw (103), and first dead screw (103) and guide bar (101) laminating, and guide bar (101) and connecting pipe (107) fixed connection.
4. A compact high pressure ratio centrifugal compressor as claimed in claim 2 wherein: the rotating circle center of the guide rod (101) is the same as that of the spherical shell (106).
5. A compact high pressure ratio centrifugal compressor as claimed in claim 1 wherein: the filter device (2) comprises an air inlet pipe (201), a fixed frame (202), a motor (203), a protection frame (204), an adjusting screw rod (205), a sliding plate (206), a first fixing plate (207), a filter screen (208) and a second fixing plate (209), wherein the air inlet pipe (201) is fixedly connected with the front end of the air compressor main body (4), the fixed frame (202) is fixedly connected with the two ends of the air inlet pipe (201), the protection frame (204) is fixedly connected with the rear end of the fixed frame (202), the motor (203) is fixedly connected with the inner side of the protection frame (204), the adjusting screw rod (205) is fixedly connected with the tail end of a main shaft of the motor (203), the adjusting screw rod (205) is rotatably connected with the air inlet pipe (201), the sliding plate (206) is spirally connected with the outer side of the adjusting screw rod (205), and the first, the other end fixedly connected with filter screen (208) of first fixed plate (207), and filter screen (208) and intake pipe (201) sliding connection, the other end fixedly connected with second fixed plate (209) of filter screen (208).
6. A compact high pressure ratio centrifugal compressor as claimed in claim 5 wherein: the number of the filter screens (208) is two in total, and the filter screens are distributed in a staggered way from front to back.
7. A compact high pressure ratio centrifugal compressor as claimed in claim 1 wherein: installation device (3) are including mount pad (301), stopper (302), the dead screw of second lock (303), connecting axle (304) and installation piece (305), outside fixedly connected with mount pad (301) of compressor main part (4), the inboard sliding connection of mount pad (301) has installation piece (305), the one end fixedly connected with connecting axle (304) of installation piece (305), the other end fixedly connected with stopper (302) of connecting axle (304), the inboard screwed connection of stopper (302) has the dead screw of second lock (303), and the dead screw of second lock (303) and the laminating of mount pad (301).
8. A compact high pressure ratio centrifugal compressor as claimed in claim 7 wherein: the number of the mounting blocks (305) is three in total, and the mounting blocks are uniformly distributed around the compressor main body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110038164.3A CN112594198A (en) | 2021-01-12 | 2021-01-12 | Small-sized high-pressure-ratio centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110038164.3A CN112594198A (en) | 2021-01-12 | 2021-01-12 | Small-sized high-pressure-ratio centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112594198A true CN112594198A (en) | 2021-04-02 |
Family
ID=75208062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110038164.3A Pending CN112594198A (en) | 2021-01-12 | 2021-01-12 | Small-sized high-pressure-ratio centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112594198A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001086152A1 (en) * | 2000-05-08 | 2001-11-15 | Abb Turbo Systems Ag | Filter silencer |
| CN207363955U (en) * | 2017-09-05 | 2018-05-15 | 江苏正驰机电有限公司 | Turbocharger air compressor shell |
| CN207974990U (en) * | 2017-12-06 | 2018-10-16 | 黄石市宏扬通风设备制造有限公司 | A kind of air blower for chemical field |
| CN209060747U (en) * | 2018-11-13 | 2019-07-05 | 重庆元朔机电有限公司 | A kind of filtering air inlet pipe |
| CN211754995U (en) * | 2020-02-23 | 2020-10-27 | 永创(天津)科技发展有限公司 | Reactor convenient to assembly |
| CN112164554A (en) * | 2020-09-16 | 2021-01-01 | 华翔翔能科技股份有限公司 | Movable transformer oil filter |
-
2021
- 2021-01-12 CN CN202110038164.3A patent/CN112594198A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001086152A1 (en) * | 2000-05-08 | 2001-11-15 | Abb Turbo Systems Ag | Filter silencer |
| CN207363955U (en) * | 2017-09-05 | 2018-05-15 | 江苏正驰机电有限公司 | Turbocharger air compressor shell |
| CN207974990U (en) * | 2017-12-06 | 2018-10-16 | 黄石市宏扬通风设备制造有限公司 | A kind of air blower for chemical field |
| CN209060747U (en) * | 2018-11-13 | 2019-07-05 | 重庆元朔机电有限公司 | A kind of filtering air inlet pipe |
| CN211754995U (en) * | 2020-02-23 | 2020-10-27 | 永创(天津)科技发展有限公司 | Reactor convenient to assembly |
| CN112164554A (en) * | 2020-09-16 | 2021-01-01 | 华翔翔能科技股份有限公司 | Movable transformer oil filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8021104B2 (en) | Compressor apparatus with recirculation and method therefore | |
| US20150050128A1 (en) | Compact multi-stage turbo pump | |
| EP1947299A2 (en) | Exhaust gas turbocharger for a combustion engine | |
| CN111963465B (en) | Two-stage axial flow non-circulation air-out low-noise fan | |
| JPH0130571Y2 (en) | ||
| CN1086770C (en) | Axial-flow turbine of waste gas turbine booster | |
| CN112594198A (en) | Small-sized high-pressure-ratio centrifugal compressor | |
| US7310947B2 (en) | Internal combustion engine with waste gas turbo-chargers | |
| CN211116811U (en) | Intake distortion restraint device and centrifugal compressor with same | |
| CN109356866B (en) | Flexible casing treatment centrifugal compressor | |
| CN216691564U (en) | Centrifugal fan convenient to nimble amount of wind of adjusting | |
| CN201173197Y (en) | High pressure volution blast engine | |
| CN104612983B (en) | Uniaxial tandem type two-stage compressor | |
| CN102777256A (en) | Impeller gas-compression gas compressor | |
| CN208138142U (en) | Compressor and air-conditioner set | |
| CN207892843U (en) | Compressor and refrigeration system | |
| CN213899294U (en) | Directly-connected driving energy-saving vacuum pump system | |
| CN221195446U (en) | Ternary flow energy-saving centrifugal ventilator | |
| CN213953739U (en) | Novel turbocharger | |
| CN217502019U (en) | Low-noise vortex air pump | |
| CN221074430U (en) | Combined air inlet valve of air compressor | |
| CN214007509U (en) | Permanent magnet horizontal two-stage compression high-efficiency mute screw air compressor | |
| CN208057468U (en) | A kind of air pump pressurizing device | |
| CN211174805U (en) | Noise reduction device and axial flow fan | |
| CN212508897U (en) | Air inlet and outlet integrated fan |
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: 20210402 |
|
| RJ01 | Rejection of invention patent application after publication |