CN110821872A - Air inlet channel and impeller clearance adjusting structure - Google Patents
Air inlet channel and impeller clearance adjusting structure Download PDFInfo
- Publication number
- CN110821872A CN110821872A CN201911260310.6A CN201911260310A CN110821872A CN 110821872 A CN110821872 A CN 110821872A CN 201911260310 A CN201911260310 A CN 201911260310A CN 110821872 A CN110821872 A CN 110821872A
- Authority
- CN
- China
- Prior art keywords
- air inlet
- inlet channel
- impeller
- nut
- clearance
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
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- 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
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- 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
Abstract
The invention discloses a clearance adjusting structure of an air inlet channel and an impeller, which comprises a volute, the air inlet channel, the impeller, a displacement sensor, a servo screw motor and a nut, wherein the volute is arranged on the top of the volute; wherein, the spiral case hole sets up the intake duct, keeps certain clearance between intake duct and the impeller, and the intake duct is coaxial with spiral case, impeller, sets up displacement sensor in the intake duct, sets up the nut on the intake duct, and the spiral case up end sets up servo screw motor, and servo screw motor's screw rod outer end is connected with the nut. According to the invention, the motor rotates forwards and backwards to drive the nut to rise or fall, the nut drives the air inlet channel to rise or fall, the rising clearance of the air inlet channel is enlarged, and the reducing clearance of the air inlet channel is reduced, so that the air input is controlled, and the system surge is controlled, and the method is simple and effective.
Description
Technical Field
The invention belongs to magnetic suspension air compressors, blowers and refrigeration compressors, and particularly relates to a structure for adjusting a gap between an air inlet channel and an impeller.
Background
The size of the clearance between the air inlet channel and the impeller blade influences the air inflow of the impeller, the large leakage amount of the clearance is large, the small leakage amount of the clearance is small, the air inflow is influenced by the leakage amount, the air inflow of an impeller inlet can be changed by changing the clearance between the air inlet channel and the impeller, the clearance between the air inlet channel and the impeller is reduced when surging occurs, the air inflow is increased, and surging is controlled.
Utility model patent No. CN208816405U discloses an adjustment piece structure that is arranged in air inlet duct and impeller clearance among the magnetic suspension air-blower, including a body, the body is the rectangle form, and 90 degrees adjustment portions of bending and forming the platform form in the bottom of body, the adjustment portion is the U shape. The utility model improves the utilization rate of the material of the adjusting pad; the universality of the adjusting pad is improved, and the stock specification is reduced; the assembly difficulty is reduced, the damage of the matching surface of the air inlet channel and the volute is reduced, and the assembly precision is improved; the labor intensity is reduced, and the independent operation of one person can be realized. However, when the air inlet channel is assembled, the adjusting shim is added to adjust the clearance between the air inlet channel and the blade, so that the measurement is not easy, and the clearance cannot be adjusted in the using process.
Disclosure of Invention
The technical purpose is as follows: aiming at the problems in the prior art, the invention discloses a new technical scheme which comprises the following steps: the utility model provides an intake duct and impeller clearance adjustment structure, the clearance size is measured easily, can adjust the clearance size at any time in the use.
The technical scheme is as follows: the invention adopts the following technical scheme: a clearance adjusting structure for an air inlet channel and an impeller comprises a volute, the air inlet channel, the impeller, a displacement sensor, a servo screw motor and a nut; wherein, the spiral case hole sets up the intake duct, keeps certain clearance between intake duct and the impeller, and the intake duct is coaxial with spiral case, impeller, sets up displacement sensor in the intake duct, sets up the nut on the intake duct, and the spiral case up end sets up servo screw motor, and servo screw motor's screw rod outer end is connected with the nut.
Preferably, the motor support is arranged on the upper end face of the volute, the servo screw motor is arranged on the motor support, and the volute is connected with the motor support through the positioning stud.
Preferably, the motor support and the positioning stud are connected through a compression nut, and the volute and the positioning stud are in threaded connection.
Preferably, the screw rod penetrates through the motor support and can rotate in the motor support, and the screw rod is in threaded connection with the nut.
Preferably, the air inlet channel and the nut are connected through a screw.
Preferably, when the servo screw motor rotates forwards, the screw is driven to rotate forwards, the screw drives the nut to rise, the nut drives the air inlet channel to rise, and the gap between the air inlet channel and the impeller is enlarged;
when the servo screw motor rotates reversely, the screw is driven to rotate reversely, the screw drives the nut to descend, the nut drives the air inlet channel to descend, and the gap between the air inlet channel and the impeller is reduced.
Has the advantages that: the invention has the following beneficial effects:
(1) the air inlet channel is driven to ascend or descend by the servo screw motor, and the gap between the air inlet channel and the impeller is adjusted, so that the air input is controlled, the system surge is controlled, and the method is simple and effective;
(2) the invention adopts the displacement sensor, can accurately measure the size of the clearance between the air inlet channel and the impeller in the using process and adjust the clearance;
(3) the air inlet channel can be stopped at any position under the control of the servo screw motor, and the clearance can be adjusted at will.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of the invention at A in FIG. 1;
FIG. 3 is an enlarged view of a portion of the invention at B in FIG. 1;
FIG. 4 is a top view of FIG. 3 of the present invention;
the device comprises a volute 1, an air inlet channel 2, an impeller 3, a displacement sensor 4, an air inlet channel and impeller gap 5, a servo screw motor 6, a motor support 7, a screw 8 and a nut 9.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The invention discloses an air inlet channel and impeller clearance adjusting structure, wherein the size of an air inlet channel and impeller clearance 5 is detected by a displacement sensor 4 and is adjusted by a servo screw motor 6, and as shown in figures 1 and 2, the air inlet channel and impeller clearance adjusting structure comprises a volute 1, an air inlet channel 2, an impeller 3, the displacement sensor 4, the servo screw motor 6, a motor support 7 and a nut 9.
Wherein, 1 hole of spiral case sets up intake duct 2, keep certain clearance between intake duct 2 and the impeller 3, intake duct 2 and spiral case 1, impeller 3 is coaxial, set up displacement sensor 4 in the intake duct 2, displacement sensor 4 detects intake duct and impeller clearance 5's size, through two nut 9 of screw fixation on the intake duct 2, bilateral symmetry arranges, 1 up end of spiral case sets up servo screw motor 6, servo screw motor 6's screw rod 8 runs through motor support 7 and can rotate in motor support 7, 8 outer ends of screw rod and nut 9 threaded connection.
As shown in fig. 3 and 4, a motor support 7 is fixed on the upper end face of the volute 1, the servo screw motor 6 is installed on the motor support 7, the volute 1 is in threaded connection with one end of each of two positioning studs, and the motor support 7 is connected with the other end of each of the two positioning studs through a compression nut.
In the invention, when the position of the air inlet 2 needs to be adjusted, 2 servo screw motors 6 are started simultaneously to jack up or pull down the air inlet 2, the position is controlled by the servo screw motors 6, and the air inlet 2 is matched with the inner hole of the volute 1 to be radially positioned: when the servo screw motor 6 rotates forwards, the screw 8 is driven to rotate forwards, the screw 8 drives the nut 9 to rise, the nut 9 drives the air inlet channel 2 to rise, and the gap 5 between the air inlet channel and the impeller is enlarged; when the servo screw motor 6 rotates reversely, the screw rod 8 is driven to rotate reversely, the screw rod 8 drives the nut 9 to descend, the nut 9 drives the air inlet channel 2 to descend, and the gap between the air inlet channel and the impeller 5 is reduced.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (6)
1. A clearance adjusting structure for an air inlet channel and an impeller is characterized by comprising a volute (1), an air inlet channel (2), an impeller (3), a displacement sensor (4), a servo screw motor (6) and a nut (9); wherein, spiral case (1) hole sets up intake duct (2), keeps certain clearance between intake duct (2) and impeller (3), and intake duct (2) are coaxial with spiral case (1), impeller (3), set up displacement sensor (4) in intake duct (2), set up nut (9) on intake duct (2), spiral case (1) up end sets up servo screw motor (6), screw rod (8) outer end and the nut (9) of servo screw motor (6) are connected.
2. The air inlet channel and impeller clearance adjusting structure of claim 1, wherein a motor support (7) is arranged on the upper end face of the volute (1), the servo screw motor (6) is arranged on the motor support (7), and the volute (1) is connected with the motor support (7) through a positioning stud.
3. The air inlet channel and impeller clearance adjusting structure as claimed in claim 2, wherein the motor support (7) is connected with the positioning stud through a compression nut, and the volute (1) is in threaded connection with the positioning stud.
4. The air inlet channel and impeller clearance adjusting structure is characterized in that the screw (8) penetrates through the motor support (7) and can rotate in the motor support (7), and the screw (8) is in threaded connection with the nut (9).
5. The adjusting structure of the clearance between the air inlet channel and the impeller is characterized in that the air inlet channel (2) is connected with the nut (9) through a screw.
6. The adjusting structure for the clearance between the air inlet channel and the impeller is characterized in that when the servo screw motor (6) rotates forwards, the screw rod (8) is driven to rotate forwards, the screw rod (8) drives the nut (9) to rise, the nut (9) drives the air inlet channel (2) to rise, and the clearance between the air inlet channel and the impeller (5) is enlarged;
when servo screw motor (6) reversal, drive screw rod (8) reversal, screw rod (8) drive nut (9) descend, and nut (9) drive intake duct (2) descend, and intake duct and impeller clearance (5) diminish.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911260310.6A CN110821872A (en) | 2019-12-10 | 2019-12-10 | Air inlet channel and impeller clearance adjusting structure |
| PCT/CN2020/076885 WO2021114486A1 (en) | 2019-12-10 | 2020-02-27 | Structure for adjusting gap between air inlet passage and impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911260310.6A CN110821872A (en) | 2019-12-10 | 2019-12-10 | Air inlet channel and impeller clearance adjusting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110821872A true CN110821872A (en) | 2020-02-21 |
Family
ID=69544466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911260310.6A Pending CN110821872A (en) | 2019-12-10 | 2019-12-10 | Air inlet channel and impeller clearance adjusting structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110821872A (en) |
| WO (1) | WO2021114486A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963470A (en) * | 2020-08-07 | 2020-11-20 | 中国北方发动机研究所(天津) | Turbocharger compressor clearance control device |
| WO2021114486A1 (en) * | 2019-12-10 | 2021-06-17 | 南京磁谷科技股份有限公司 | Structure for adjusting gap between air inlet passage and impeller |
| CN113935126A (en) * | 2021-09-10 | 2022-01-14 | 南京磁谷科技股份有限公司 | Magnetic suspension fan working efficiency optimization method |
| CN115030889A (en) * | 2022-06-30 | 2022-09-09 | 势加透博（北京）科技有限公司 | Air compressor |
Citations (5)
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| CN1745253A (en) * | 2002-12-06 | 2006-03-08 | 约克国际公司 | Variable geometry diffuser mechanism |
| CN204591750U (en) * | 2015-05-04 | 2015-08-26 | 亿昇(天津)科技有限公司 | The real-time measuring and adjustation device of a kind of blower wheel air gap |
| KR20160103226A (en) * | 2015-02-23 | 2016-09-01 | 한국기계연구원 | Adjusting apparatus of shroud clearance of rotary fluid handling machine |
| CN208816405U (en) * | 2018-08-30 | 2019-05-03 | 南京磁谷科技有限公司 | A kind of adjustment chip architecture for air intake duct in magnetic suspension air blower and impeller clearance |
| CN211230939U (en) * | 2019-12-10 | 2020-08-11 | 南京磁谷科技有限公司 | Air inlet channel and impeller clearance adjusting structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4629396A (en) * | 1984-10-17 | 1986-12-16 | Borg-Warner Corporation | Adjustable stator mechanism for high pressure radial turbines and the like |
| CN1171020C (en) * | 1997-08-06 | 2004-10-13 | 运载器有限公司 | Drive positioning mechanism with backlash adjustment for variable pipe diffuser |
| WO2014030248A1 (en) * | 2012-08-24 | 2014-02-27 | 三菱重工業株式会社 | Centrifugal compressor |
| US9822698B2 (en) * | 2015-02-06 | 2017-11-21 | Honeywell International Inc. | Passive and semi-passive inlet-adjustment mechanisms for compressor, and turbocharger having same |
| CN110821872A (en) * | 2019-12-10 | 2020-02-21 | 南京磁谷科技有限公司 | Air inlet channel and impeller clearance adjusting structure |
-
2019
- 2019-12-10 CN CN201911260310.6A patent/CN110821872A/en active Pending
-
2020
- 2020-02-27 WO PCT/CN2020/076885 patent/WO2021114486A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1745253A (en) * | 2002-12-06 | 2006-03-08 | 约克国际公司 | Variable geometry diffuser mechanism |
| KR20160103226A (en) * | 2015-02-23 | 2016-09-01 | 한국기계연구원 | Adjusting apparatus of shroud clearance of rotary fluid handling machine |
| CN204591750U (en) * | 2015-05-04 | 2015-08-26 | 亿昇(天津)科技有限公司 | The real-time measuring and adjustation device of a kind of blower wheel air gap |
| CN208816405U (en) * | 2018-08-30 | 2019-05-03 | 南京磁谷科技有限公司 | A kind of adjustment chip architecture for air intake duct in magnetic suspension air blower and impeller clearance |
| CN211230939U (en) * | 2019-12-10 | 2020-08-11 | 南京磁谷科技有限公司 | Air inlet channel and impeller clearance adjusting structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114486A1 (en) * | 2019-12-10 | 2021-06-17 | 南京磁谷科技股份有限公司 | Structure for adjusting gap between air inlet passage and impeller |
| CN111963470A (en) * | 2020-08-07 | 2020-11-20 | 中国北方发动机研究所(天津) | Turbocharger compressor clearance control device |
| CN113935126A (en) * | 2021-09-10 | 2022-01-14 | 南京磁谷科技股份有限公司 | Magnetic suspension fan working efficiency optimization method |
| CN113935126B (en) * | 2021-09-10 | 2023-03-07 | 南京磁谷科技股份有限公司 | Magnetic suspension fan working efficiency optimization method |
| CN115030889A (en) * | 2022-06-30 | 2022-09-09 | 势加透博（北京）科技有限公司 | Air compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021114486A1 (en) | 2021-06-17 |
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