Cooling structure of air suspension high-speed centrifugal blower

Abstract

The utility model discloses a cooling structure of an air suspension high-speed centrifugal blower, which comprises a volute, a casing is arranged at the outer end of the volute, a support cylinder is arranged at the inner end of the casing, a stator and a rotor are arranged in the support cylinder, and rotating shafts are arranged on two sides of the rotor. The outer end surface of the rotating shaft is connected to the inner side surface of the volute and the inner side surface of the machine shell through radial air bearings, an impeller is arranged at the outer end of the rotating shaft, cooling fins are fixed to the inner side surface of the volute, an air inlet is formed in the outer end of the machine shell, first fan blades are fixed to the rear end of the rotating shaft, and second fan blades are fixed to the front end of the rotating shaft. A bent flow guide pipe is fixed to the surface of the inner side of the upper end of the machine shell, the upper end of the bent flow guide pipe is fixedly connected to the surface of the inner side of the volute, reverse fan blades are arranged at a rotating shaft of the rotor, air can be sucked and guided from the right end, enters the machine shell to be cooled and directly reaches an air bearing and a stator, the cooling degree can be improved, and the size is reduced. And later installation and use are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of air suspension high-speed centrifugal blowers, and more specifically to a cooling structure of an air suspension high-speed centrifugal blower. Background Art

[0002] The air-floating centrifugal blower combines a number of advanced technologies such as dynamic pressure air bearings, high-speed permanent magnet synchronous motors, three-dimensional flow centrifugal compressors, and high-speed frequency conversion systems. Compared with traditional Roots blowers, it has made a huge leap in energy saving and noise reduction. It has been widely used in sewage treatment, aquaculture, pneumatic transportation, etc.

[0003] When cooling, air cooling and water cooling are usually used. In the prior art, such as CN220358932U, a cooling structure of an air suspension centrifugal blower is disclosed, which relates to the technical field of blowers and includes a motor and a compressor; wherein the air outlet of the compressor is connected to the fan pipeline, the motor includes a motor housing, a stator, and a rotor, there is a gap between the rotor and the stator, both ends of the rotor are installed on the bearing seat through radial air bearings, and the bearing seat is fixedly connected to the motor housing; an air inlet and an exhaust port are opened on the motor housing;

[0004] The above patent uses internal and external flow guide mechanisms to communicate with each other, increase air flow for cooling, but requires external connection of multiple duct structures, which increases the overall volume, increases the difficulty of installation, is inconvenient to use, has low directness of cooling the air bearing, and has a low cooling degree. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a cooling structure for an air-suspended high-speed centrifugal blower. Reverse fan blades are arranged at the rotating shaft of the rotor, which can draw air from the right end and guide it into the casing for cooling, directly reaching the air bearing and the stator, thereby improving the cooling degree, reducing the volume, and facilitating later installation and use.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A cooling structure of an air-suspended high-speed centrifugal blower comprises a volute, a casing is arranged at the outer end of the volute, a support tube is arranged at the inner end of the casing, a stator and a rotor are arranged in the support tube, a rotating shaft is arranged on both sides of the rotor, the outer end surface of the rotating shaft is connected to the volute and the inner surface of the casing through a radial air bearing, an impeller is arranged at the outer end of the rotating shaft, a heat sink is fixed on the inner surface of the volute, an air inlet is arranged at the outer end of the casing, a first fan blade is fixed at the rear end of the rotating shaft, and a second fan blade is fixed at the front end, a curved guide tube is fixed on the inner surface of the upper end of the casing, the upper end of the curved guide tube is fixedly connected to the inner surface of the volute, and a reverse fan blade is arranged at the rotating shaft of the rotor, which can inhale and guide air from the right end, enter the casing for cooling, and directly reach the air bearing and the stator, so as to improve the cooling degree, reduce the volume, and facilitate later installation and use.

[0008] Furthermore, the heat sink is made of brass sheet material with a thickness of no more than one millimeter, and the heat sink is evenly distributed on the inner surface of the volute.

[0009] Furthermore, the bracket tube adopts a circular sleeve structure, and a support sheet is arranged at the outer end thereof, and the support sheet is fixed to the inner surface of the casing.

[0010] Furthermore, the air inlets are evenly distributed on the outer end surface of the casing.

[0011] Furthermore, the first blade and the second blade are made of steel sheets, which is a reverse blade structure.

[0012] Furthermore, the heat sink is arranged on the inner surface of the radial air bearing at the front end of the rotating shaft.

[0013] Furthermore, the curved flow guide pipe is made of a copper tube, which is arranged in a curved state, and the flow guide portion at the upper end of the curved flow guide pipe is fixed on the inner surface of the air outlet of the volute.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) Reverse blades are set at the rotor shaft to draw air from the right end and guide it into the casing for cooling, directly reaching the air bearing and stator, which can improve the cooling degree, reduce the volume, and facilitate later installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a left side cross-sectional view of the distribution of the heat sinks in the volute of the utility model;

[0018] Figure 3 It is a right side view of the overall structure of the utility model;

[0019] Figure 4 It is a side cross-sectional view of the connection relationship between the casing and the bracket tube of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1 volute, 2 casing, 3 support tube, 4 stator, 5 rotor, 6 rotating shaft, 7 radial air bearing, 8 impeller, 9 heat sink, 10 air inlet, 11 first fan blade, 12 second fan blade, 13 curved guide pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1-4 , a cooling structure of an air suspension high-speed centrifugal blower, comprising a volute 1, a casing 2 is arranged at the outer end of the volute 1, a bracket tube 3 is arranged at the inner end of the casing 2, the bracket tube 3 adopts a circular sleeve structure, a support sheet is arranged at the outer end thereof, and the support sheet is fixed to the inner surface of the casing 2 for supporting the stator 4, and the support sheet allows airflow to pass through, a stator 4 and a rotor 5 are arranged in the bracket tube 3, a rotating shaft 6 is arranged on both sides of the rotor 5, the outer end surface of the rotating shaft 6 is connected to the volute 1 and the inner surface of the casing 2 through a radial air bearing 7, an impeller 8 is arranged at the outer end of the rotating shaft 6, a heat sink 9 is fixed to the inner surface of the volute 1, an air inlet 10 is arranged at the outer end of the casing 2, and a first fan blade 11 is fixed to the rear end of the rotating shaft 6, and a second fan blade 12 is fixed to the front end, a curved guide tube 13 is fixed to the inner surface of the upper end of the casing 2, and the upper end of the curved guide tube 13 is fixedly connected to the inner surface of the volute 1;

[0025] The heat sink 9 is made of brass sheet material, and its thickness is not more than one millimeter. The heat sink 9 is evenly distributed on the inner surface of the volute 1. The heat sink 9 is arranged on the inner surface of the radial air bearing 7 at the front end of the rotating shaft 6.

[0026] The curved guide tube 3 is made of copper tube, which is set in a curved state. The upper end of the curved guide tube 3 is fixed to the inner surface of the air outlet of the volute 1, which is used for heat absorption and heat dissipation. The airflow is introduced into the air outlet, and can be carried out by the wind blown by the impeller 8, which can increase the fluidity of the airflow and become a fast-flowing air heat dissipation.

[0027] When in use, the rotor 5 rotates, which can drive the rotating shaft 6 to rotate, and can drive the impeller 8 to rotate for normal blowing work, and at the same time drive the first fan blade 11 and the second fan blade 12 to rotate. Since the first fan blade 11 and the second fan blade 12 adopt a reverse fan blade structure, when rotating, they can absorb air from the right end and transmit it to the left end, and take in air through the air inlet 10, and flow into the casing 2 through the overhead bracket tube 3, which can dissipate heat to the radial air bearings 7 on both sides. At the same time, the heat sink 9 can absorb the heat from the front radial air bearing 7, which is convenient for rapid heat dissipation and improves efficiency. At the same time, the volume is not increased, which is convenient for subsequent installation and use.

[0028] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A cooling structure for an air-suspended high-speed centrifugal blower, comprising a volute (1), Features: A casing (2) is arranged at the outer end of the volute (1), a support tube (3) is arranged at the inner end of the casing (2), a stator (4) and a rotor (5) are arranged inside the support tube (3), a rotating shaft (6) is arranged on both sides of the rotor (5), the outer end surface of the rotating shaft (6) is connected to the volute (1) and the inner surface of the casing (2) through a radial air bearing (7), an impeller (8) is arranged at the outer end of the rotating shaft (6), a heat sink (9) is fixed to the inner surface of the volute (1), an air inlet (10) is arranged at the outer end of the casing (2), a first fan blade (11) is fixed at the rear end of the rotating shaft (6), and a second fan blade (12) is fixed at the front end, a curved guide tube (13) is fixed to the inner surface of the upper end of the casing (2), and the upper end of the curved guide tube (13) is fixedly connected to the inner surface of the volute (1).

2. The cooling structure of an air suspension high-speed centrifugal blower according to claim 1, Features: The heat sink (9) is made of brass sheet material with a thickness of no more than one millimeter, and the heat sink (9) is evenly distributed on the inner surface of the volute (1).

3. The cooling structure of an air suspension high-speed centrifugal blower according to claim 1, Features: The support tube (3) adopts a circular sleeve structure, and a support sheet is arranged at the outer end thereof, and the support sheet is fixed to the inner surface of the casing (2).

4. The cooling structure of an air suspension high-speed centrifugal blower according to claim 1, Features: The air inlets (10) are evenly distributed on the outer end surface of the casing (2).

5. The cooling structure of an air suspension high-speed centrifugal blower according to claim 1, Features: The first fan blade (11) and the second fan blade (12) are made of steel sheets and have a reverse fan blade structure.

6. The cooling structure of an air suspension high-speed centrifugal blower according to claim 1, Features: The heat sink (9) is arranged on the inner surface of the radial air bearing (7) at the front end of the rotating shaft (6).

7. The cooling structure of an air suspension high-speed centrifugal blower according to claim 1, Features: The curved flow guide tube (13) is made of a copper tube and is arranged in a curved state. The flow guide portion at the upper end of the curved flow guide tube (13) is fixed to the inner surface of the air outlet of the volute (1).

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