CN215830756U - Self-suction cooling type air-floating direct-drive centrifugal blower - Google Patents
Self-suction cooling type air-floating direct-drive centrifugal blower Download PDFInfo
- Publication number
- CN215830756U CN215830756U CN202121064480.XU CN202121064480U CN215830756U CN 215830756 U CN215830756 U CN 215830756U CN 202121064480 U CN202121064480 U CN 202121064480U CN 215830756 U CN215830756 U CN 215830756U
- Authority
- CN
- China
- Prior art keywords
- air
- annular cavity
- suction
- motor
- permanent magnet
- 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.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses a self-absorption cooling type air-floating direct-drive centrifugal blower, which comprises an air inlet pipeline, a centrifugal impeller, an exhaust volute, a permanent magnet synchronous motor main shaft, an air-floating thrust disc, an air-floating radial bearing, a motor cold air inlet annular cavity, a suction pipeline, a stator core, a stator winding, a fixed structure, a permanent magnet synchronous motor shell, a motor cold air outlet annular cavity, a suction annular cavity and the like, wherein the suction force generated by the centrifugal impeller of the blower is utilized, the cooling air flow rate and the flow rate between a rotor and a stator of a high-speed direct-drive motor are increased to the maximum extent through the structural arrangement of the air inlet pipeline, the suction pipeline, the motor cold air outlet annular cavity and the suction annular cavity, the cooling efficiency of the rotor and the stator of the high-speed direct-drive motor is increased, and the method can effectively take away the heat generated by the motor in the long-time running process of the air-floating direct-drive centrifugal blower under the condition that the centrifugal impeller is not additionally cooled, the accident that the motor burns out is prevented from happening to the air flotation direct-drive centrifugal blower.
Description
Technical Field
The utility model relates to the technical field of gas compression and dust conveying, in particular to a self-absorption cooling type air floatation direct-drive centrifugal blower.
Background
The power consumption of equipment such as a blower, a compressor, a pump and the like accounts for about one third of the annual generated energy, the energy efficiency of the equipment is improved, and the power consumption expenditure and carbon emission indexes of enterprises are directly reduced. In the existing blower with the power of less than 300kW, the air floatation direct-drive blower has the advantages of high efficiency and oil-free lubrication, and becomes a second choice for replacing the traditional Roots blower widely used, but the air floatation direct-drive blower has the problem that a high-speed direct-drive motor is unsmooth in heat dissipation after long-time operation. Because the heat dissipation technology of the air floatation direct-drive blower is not mature, the accident that the air floatation direct-drive centrifugal blower is burnt due to the over-temperature of the high-speed direct-drive motor occurs too much, and certain economic loss is brought to users. The fundamental reason for poor heat dissipation is that the limited vacuum degree is not utilized, the maximum suction pressure difference is formed at the key cooling position of the motor, which requires the designer of the motor cooling structure to reduce the resistance of the rest positions on the cooling gas flow to the maximum extent, and how to arrange the internal structure of the air-floatation direct-drive centrifugal blower realizes the matching of the cooling air volume and the maximum motor heat productivity under the condition of not additionally increasing the cooling impeller, thus becoming the difficult problem of the design of the air-floatation direct-drive centrifugal blower. At present, no effective technical scheme for solving the problems is available.
Disclosure of Invention
The present invention is directed to solving the above problems and providing a self-suction cooling type air-floating direct-drive centrifugal blower.
The utility model realizes the purpose through the following technical scheme:
a self-absorption cooling type air-flotation direct-drive centrifugal blower comprises an air inlet pipeline 1, a centrifugal impeller 2, an exhaust volute 3, a permanent magnet synchronous motor spindle 4, an air-flotation thrust disc 5, a first air-flotation radial bearing 6, a second air-flotation radial bearing 7, a motor air-cooling inlet annular cavity 8, a suction pipeline 9, a stator core 10, a stator winding 11, a fixed structure 12, a permanent magnet synchronous motor shell 13, a motor air-cooling outlet annular cavity 14 and a suction annular cavity 15, wherein the centrifugal impeller 2 and the air-flotation thrust disc 5 are fixed on the permanent magnet synchronous motor spindle 4, radial bearing supporting positions of the permanent magnet synchronous motor spindle 4 are respectively supported by the first air-flotation radial bearing 6 and the second air-flotation radial bearing 7, one end of the air inlet pipeline 1 is connected with the exhaust volute 3 through an external pipeline of the centrifugal impeller 2, and the motor air-cooling outlet annular cavity 14 and the air-cooling motor inlet annular cavity 8 are both positioned on the inner side of the permanent magnet synchronous motor shell 13, the motor cold air outlet annular cavity 14 and the motor cold air inlet annular cavity 8 are respectively arranged at two sides of the stator winding 11, the motor cold air inlet annular cavity 8 and the motor cold air outlet annular cavity 14 are both communicated with a cavity formed by the permanent magnet synchronous motor shell 13, one end of the suction pipeline 9 is connected with an inlet of the suction annular cavity 15, the other end of the suction pipeline is communicated with the motor cold air outlet annular cavity 14, the stator winding 11 is fixed on the stator iron core 10, the stator iron core 10 is fixed on the permanent magnet synchronous motor shell 13 through the fixing structure 12, and the central line of the main shaft of the permanent magnet synchronous motor main shaft 4 is coincided with the central lines of the stator iron core 10 and the stator winding 11.
The flow cross-sectional area of the suction ring cavity 15 gradually increases from the inlet to the outlet, and the inner surface of the suction ring cavity 15 is in smooth gradual transition with the outlet surface of the suction pipeline 9 and the side surface of the air inlet pipeline 1 respectively.
The first air-floatation radial bearing 6 and the second air-floatation radial bearing 7 are dynamic pressure air suspension bearings.
The permanent magnet synchronous motor spindle 4 is composed of a spindle supporting section, a permanent magnet and a high-temperature alloy sheath, and the high-temperature alloy sheath is located on the outer side of the permanent magnet.
The utility model has the beneficial effects that:
the utility model provides a self-absorption cooling type air floatation direct-drive centrifugal blower with low manufacturing cost and high operability, which does not need to increase a motor cooling centrifugal impeller, only utilizes the suction force generated by one blower centrifugal impeller, and improves the cooling air flow rate and flow rate between a rotor and a stator of a high-speed direct-drive motor to the maximum extent through a channel structure formed by an air inlet pipeline, a suction pipeline, a motor cold air outlet annular cavity and a suction annular cavity, thereby increasing the cooling efficiency of the rotor and the stator of the high-speed direct-drive motor. The air floatation direct-drive centrifugal blower heat dissipation device can effectively take away heat generated by a motor in the long-time running process of the air floatation direct-drive centrifugal blower, and prevents the air floatation direct-drive centrifugal blower from being burnt out. In addition, the flow loss can be reduced by gradually increasing the flow cross-sectional area of the suction ring cavity from the inlet to the outlet and by smoothly and gradually transitioning the inner surface of the suction ring cavity with the surface of the outlet of the suction pipeline and the side surface of the air inlet pipeline respectively, so that the suction effect on cold air is enhanced; the utility model adopts the dynamic pressure air suspension bearing, reduces the friction loss in the operation process of the equipment to the maximum extent, and does not increase an air supply device; the permanent magnet synchronous motor spindle fixes and protects the permanent magnet by the high-temperature alloy sheath, so that the safety of equipment is improved.
Drawings
FIG. 1 is a schematic view of a self-suction cooling type air-floatation direct-drive centrifugal blower according to the present invention.
Detailed Description
The utility model will be further described with reference to the accompanying drawings in which:
as shown in FIG. 1, the self-absorption cooling type air-flotation direct-drive centrifugal blower comprises an air inlet pipeline 1, a centrifugal impeller 2, an exhaust volute 3, a permanent magnet synchronous motor spindle 4, an air-flotation thrust disc 5, a first air-flotation radial bearing 6, a second air-flotation radial bearing 7, a motor cold air inlet annular cavity 8, a suction pipeline 9, a stator core 10, a stator winding 11, a fixed structure 12, a permanent magnet synchronous motor shell 13, a motor cold air outlet annular cavity 14 and a suction annular cavity 15, wherein the centrifugal impeller 2 and the air-flotation thrust disc 5 are fixed on the permanent magnet synchronous motor spindle 4, radial bearing supports of the permanent magnet synchronous motor spindle 4 are respectively supported by the first air-flotation radial bearing 6 and the second air-flotation radial bearing 7, one end of the air inlet pipeline 1 is connected with the exhaust volute 3 through an external pipeline of the centrifugal impeller 2, and the motor cold air outlet annular cavity 14 and the motor cold air inlet annular cavity 8 are both positioned inside the permanent magnet synchronous motor shell 13, the motor cold air outlet annular cavity 14 and the motor cold air inlet annular cavity 8 are respectively arranged at two sides of the stator winding 11, the motor cold air inlet annular cavity 8 and the motor cold air outlet annular cavity 14 are both communicated with a cavity formed by the permanent magnet synchronous motor shell 13, one end of the suction pipeline 9 is connected with an inlet of the suction annular cavity 15, the other end of the suction pipeline is communicated with the motor cold air outlet annular cavity 14, the stator winding 11 is fixed on the stator iron core 10, the stator iron core 10 is fixed on the permanent magnet synchronous motor shell 13 through the fixing structure 12, and the central line of the main shaft of the permanent magnet synchronous motor main shaft 4 is coincided with the central lines of the stator iron core 10 and the stator winding 11.
As a preferred embodiment of the utility model, the flow cross-sectional area of the suction ring cavity 15 gradually increases from the inlet to the outlet, and the inner surface of the suction ring cavity 15 is smoothly and gradually transited with the outlet surface of the suction pipeline 9 and the side surface of the air inlet pipeline 1 respectively.
In a preferred embodiment of the present invention, the first and second air-bearing radial bearings 6 and 7 are hydrodynamic air-bearing bearings.
As a preferred embodiment of the present invention, the permanent magnet synchronous motor spindle 4 is composed of a spindle support section, a permanent magnet, and a high temperature alloy sheath, and the high temperature alloy sheath is located outside the permanent magnet.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (4)
1. From inhaling cooling type air supporting and directly driving centrifugal blower, its characterized in that: comprises an air inlet pipeline (1), a centrifugal impeller (2), an exhaust volute (3), a permanent magnet synchronous motor main shaft (4), an air floatation thrust disc (5), a first air floatation radial bearing (6), a second air floatation radial bearing (7), a motor cold air inlet annular cavity (8), a suction pipeline (9), a stator core (10), a stator winding (11), a fixed structure (12), a permanent magnet synchronous motor shell (13), a motor cold air outlet annular cavity (14) and a suction annular cavity (15), wherein the centrifugal impeller (2) and the air floatation thrust disc (5) are fixed on the permanent magnet synchronous motor main shaft (4), the radial bearing supporting parts of the permanent magnet synchronous motor main shaft (4) are respectively supported by the first air floatation radial bearing (6) and the second air floatation radial bearing (7), one end of the air inlet pipeline (1) is connected with the exhaust volute (3) through an external pipeline of the centrifugal impeller (2), the motor cold air outlet annular cavity (14) and the motor cold air inlet annular cavity (8) are located on the inner side of the permanent magnet synchronous motor shell (13), the motor cold air outlet annular cavity (14) and the motor cold air inlet annular cavity (8) are respectively located on two sides of the stator winding (11), the motor cold air inlet annular cavity (8) and the motor cold air outlet annular cavity (14) are communicated with a cavity formed by the permanent magnet synchronous motor shell (13), one end of a suction pipeline (9) is connected with an inlet of the suction annular cavity (15), the other end of the suction pipeline is communicated with the motor cold air outlet annular cavity (14), the stator winding (11) is fixed on the stator core (10), the stator core (10) is fixed on the permanent magnet synchronous motor shell (13) through a fixing structure (12), and the center line of a main shaft (4) of the permanent magnet synchronous motor coincides with the center lines of the stator core (10) and the stator winding (11).
2. The self-suction cooling type air-floating direct-drive centrifugal blower as claimed in claim 1, characterized in that: the flow cross section area of the suction ring cavity (15) is gradually increased from the inlet to the outlet, and the inner surface of the suction ring cavity (15) is in smooth gradual transition with the outlet surface of the suction pipeline (9) and the side surface of the air inlet pipeline (1) respectively.
3. The self-suction cooling type air-floating direct-drive centrifugal blower as claimed in claim 1, characterized in that: the first air-floatation radial bearing (6) and the second air-floatation radial bearing (7) are dynamic pressure air suspension bearings.
4. The self-suction cooling type air-floating direct-drive centrifugal blower as claimed in claim 1, characterized in that: the permanent magnet synchronous motor spindle (4) is composed of a spindle supporting section, a permanent magnet and a high-temperature alloy sheath, and the high-temperature alloy sheath is located on the outer side of the permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121064480.XU CN215830756U (en) | 2021-05-19 | 2021-05-19 | Self-suction cooling type air-floating direct-drive centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121064480.XU CN215830756U (en) | 2021-05-19 | 2021-05-19 | Self-suction cooling type air-floating direct-drive centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215830756U true CN215830756U (en) | 2022-02-15 |
Family
ID=80188816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121064480.XU Active CN215830756U (en) | 2021-05-19 | 2021-05-19 | Self-suction cooling type air-floating direct-drive centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215830756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114552887A (en) * | 2022-03-09 | 2022-05-27 | 精效悬浮(苏州)科技有限公司 | Air gap cooling structure of stator and rotor of water-cooled motor for blower |
-
2021
- 2021-05-19 CN CN202121064480.XU patent/CN215830756U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114552887A (en) * | 2022-03-09 | 2022-05-27 | 精效悬浮(苏州)科技有限公司 | Air gap cooling structure of stator and rotor of water-cooled motor for blower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022105209A1 (en) | Air-cooled compressor | |
| CN108775289A (en) | A kind of self-cooling type air suspension compressor with gas storage function | |
| CN207538866U (en) | Two-stage cantilevered axis stream expanding machine | |
| WO2022105207A1 (en) | Closed impeller and compressor | |
| CN115370595A (en) | Bilateral self-suction cooling double-impeller air-floatation high-speed direct-drive centrifugal blower and working method | |
| CN215830756U (en) | Self-suction cooling type air-floating direct-drive centrifugal blower | |
| CN114165462B (en) | Centrifugal air compressor and fuel cell system | |
| CN214577793U (en) | Air-cooled compressor | |
| CN115370594A (en) | Self-suction cooling type air floatation direct-drive centrifugal blower and working method | |
| CN220956099U (en) | Self-balancing air flue structure around air suspension centrifugal vacuum pump impeller | |
| CN219068012U (en) | Air suspension centrifugal blower and negative pressure air cooling high-speed permanent magnet motor | |
| CN215830748U (en) | High-performance single-side double-impeller air-floatation high-speed direct-drive turbo compressor | |
| CN211266681U (en) | Forced cooling type solid rotor motor | |
| CN115370591A (en) | Pressurizing suction cooling type air flotation centrifugal air compressor and working method | |
| CN113294359B (en) | High-performance single-side double-impeller magnetic levitation high-speed direct-drive turbine compressor and working mechanism | |
| CN215830755U (en) | Bilateral self-suction cooling double-impeller air-floatation high-speed direct-drive centrifugal blower structure | |
| CN218376590U (en) | Bearing cooling device of air bearing turbocharger | |
| CN213953970U (en) | Axial temperature balancing structure of small high-speed two-stage centrifugal air pump for fuel cell | |
| CN201810353U (en) | Sweepforward type shaft seal structure | |
| CN115030784A (en) | Bearing cooling device of air bearing turbocharger | |
| CN217783802U (en) | Pressurizing suction cooling type air-float centrifugal air compressor | |
| CN113250981B (en) | High-performance single-side double-impeller air-floatation high-speed direct-drive turbine compressor and working method | |
| CN112177967A (en) | Axial temperature balancing structure of small high-speed two-stage centrifugal air pump for fuel cell | |
| CN215830749U (en) | High-performance unilateral double-impeller magnetic levitation high-speed direct-drive turbine compressor structure | |
| CN112096509A (en) | Streamline tunnel type turbocharger adopting outline type air bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |