High-power air suspension centrifugal blower with double cooling systems

Abstract

The utility model discloses a high-power air suspension centrifugal blower with double cooling systems, which comprises a main machine shell, a first air compressor shell and a second air compressor shell, one end of the main machine shell is fixedly connected with the second air compressor shell, and the other end of the main machine shell is fixedly connected with one end of an air inlet cover. The other end of the air inlet cover is fixedly connected to the first air compressor shell, a cooling water jacket provided with diversion trenches communicating with each other is fixedly installed on the inner side of the main machine shell, a water inlet pipe and a water outlet pipe communicating to the diversion trenches are arranged on the main machine shell, a motor is fixedly installed on the inner side of the cooling water jacket, and a motor rotor is arranged in the middle of the motor. Compressor impellers are installed at the two ends of the motor rotor, a cooling cavity communicated with the outside and the motor installation position is formed in the main machine shell, the motor installation position is communicated with an air inlet cover inner cavity in the air inlet cover, and a cooling air outlet communicated with the air inlet cover inner cavity is formed in the air inlet cover. Through the arrangement, double cooling of air cooling and water cooling can be achieved, and the heat dissipation performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blowers, in particular to a high-power air suspension centrifugal blower with a double cooling system. Background Art

[0002] The air suspension centrifugal blower is mainly composed of a casing, an air suspension bearing, a motor, turbine blades and a control system. The special thing about it is that the lubrication method during operation is oil-free lubrication, that is, by using forced air cooling and internal airflow control technology to provide the required cooling and lubrication for the turbine and bearings.

[0003] The working principle of the air suspension centrifugal blower is that the electric motor drives the turbine to rotate, generating a strong centrifugal force, sucking air from the air inlet, and after expansion through the mass expansion chamber, pressurized by the centrifugal compressor. At the same time, the centrifugal force of the high-speed centrifuge is encapsulated inside the bearing through the suspension guide shaft air film, separating it from the turbine and maintaining stable operation.

[0004] During high-speed operation, the motor will generate heat due to current conversion and other reasons. Long-term operation at high temperature can easily reduce the service life of the centrifugal blower. At present, most of the heat dissipation methods of air suspension centrifugal blowers are air cooling, which is effective in low-power blowers, but has poor heat dissipation effect for long-term operation of high-power blowers. Utility Model Content

[0005] In view of the above-mentioned defects, the utility model provides a high-power air-suspended centrifugal blower with a dual cooling system, which can realize dual cooling of air cooling and water cooling and improve the heat dissipation performance of the air-suspended centrifugal blower.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a high-power air suspension centrifugal blower with a dual cooling system, comprising a main engine casing, a first compressor casing, and a second compressor casing, wherein one end of the main engine casing is fixedly connected to the second compressor casing, the other end of the main engine casing is fixedly connected to one end of an air intake hood, and the other end of the air intake hood is fixedly connected to the first compressor casing, a cooling water jacket provided with mutually connected guide grooves is fixedly installed on the inner side of the main engine casing, a water inlet pipe and a water outlet pipe connected to the guide grooves are provided on the main engine casing, a motor is fixedly installed on the inner side of the cooling water jacket, a motor rotor is provided in the middle part of the motor, compressor impellers are installed at both ends of the motor rotor, a cooling cavity connected to the outside and a motor installation location is provided inside the main engine casing, the motor installation location is connected to an inner cavity of the air intake hood inside the air intake hood, and a cooling air outlet connected to the inner cavity of the air intake hood is provided on the air intake hood.

[0007] As a further improvement of the utility model, a cooling fan is installed at one end of the motor rotor, and the cooling fan is located in the inner cavity of the air intake hood.

[0008] As a further improvement of the utility model, a gap is left between the cooling fan and the inner wall of the inner cavity of the air intake hood.

[0009] As a further improvement of the present invention, gaps are provided between adjacent guide grooves.

[0010] As a further improvement of the present invention, air suspension bearings are installed at both ends of the motor rotor, and the air suspension bearing on the side close to the first compressor casing cooperates with the rear radial bearing seat.

[0011] As a further improvement of the present invention, the rear radial bearing seat is fixedly connected between the main engine casing and the first compressor casing, and a vent hole is provided on the rear radial bearing seat.

[0012] Beneficial effects of the utility model:

[0013] By setting up a dual cooling system of air cooling and water cooling, the heat dissipation effect is guaranteed, and the motor temperature can be kept stable during operation. The main engine air cooling system draws external cooling air into the cooling channel, and the cooling air cools the motor and the motor rotor temperature; the cooling water of the water cooling system enters through the water inlet pipe, circulates in the cooling water jacket and is discharged through the water outlet pipe. The cooling water takes away the temperature of the motor stator during the circulation of the cooling water jacket. The double cooling achieves the effect of motor heat dissipation when the high-power motor is running in the air suspension centrifugal blower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a high-power air suspension centrifugal blower with a dual cooling system of the utility model;

[0015] Figure 2 It is a schematic diagram of the cooling water jacket structure;

[0016] Figure 3 It is a schematic diagram of the air cooling system cycle.

[0017] In the figure: 1-first compressor casing, 100-first casing air inlet flow passage, 101-first casing air outlet flow passage;

[0018] 2- air intake hood, 200- air intake hood inner cavity, 201- cooling air outlet;

[0019] 3-rear radial bearing seat, 300-vent;

[0020] 4-main body housing, 400-water outlet pipe, 401-water inlet pipe, 402-cooling air inlet, 403-cooling cavity, 404-first through hole;

[0021] 5-cooling water jacket, 500-guide groove, 501-notch;

[0022] 6-motor; 7-motor rotor;

[0023] 8 - second compressor casing, 800 - second casing air inlet passage, 801 - second casing air outlet passage; 9 - cooling fan. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referenced to the directions of the accompanying drawings. Therefore, the directional terms used are used to illustrate and are not used to limit the utility model. In addition, in all embodiments, the same figure numbers represent the same elements.

[0025] like Figure 1 , Figure 2 , Figure 3 A high-power air suspension centrifugal blower with a dual cooling system is shown, comprising a main engine casing 4, a first compressor casing 1, and a second compressor casing 8. One end of the main engine casing 4 is fixedly connected to the second compressor casing 8, one side of the second compressor casing 8 is provided with a second casing air inlet channel 800, and the other side of the second compressor casing 8 is provided with a second casing air outlet channel 801.

[0026] A first compressor casing 1 is provided at the other end of the main engine casing 4, an air intake hood 2 is provided between the main engine casing 4 and the first compressor casing 1, an air intake hood inner cavity 200 is provided inside the air intake hood 2, a first casing air inlet passage 100 is provided at one end of the first compressor casing 1, and a first casing air outlet passage 101 is provided at one side of the first compressor casing 1.

[0027] A cooling water jacket 5 is fixedly installed on the inner side of the main engine housing 4. A plurality of guide grooves 500 are provided on the cooling water jacket 5. Adjacent guide grooves 500 are interconnected through notches 501 provided at different positions. The cooling water jacket 5 and the inner side of the main engine housing 4 are tightly fitted to form a closed waterway. A water inlet pipe 401 is provided on the side of the main engine housing 4 close to the second compressor housing 8. The water inlet pipe 401 is interconnected with the formed closed waterway. A water outlet pipe 400 is provided on the side of the main engine housing 4 close to the first compressor housing 1. The water outlet pipe 400 is interconnected with the formed closed waterway.

[0028] As a further illustration of this example, the water inlet pipe 401 is connected to the water tank and the water pump. The water pump can press the coolant in the water tank into the water channel between the cooling water jacket 5 and the main body housing 4 through the water inlet pipe 401. The coolant circulates between the water channels through the notch 501 and is then discharged through the water outlet pipe 400 at the other end.

[0029] A motor 6 is fixedly mounted on the inner side of the cooling water jacket 5, a motor rotor 7 is arranged in the middle of the motor 6, a gap cooling channel is left between the motor stator and the motor rotor 7, compressor impellers (not shown) are installed at both ends of the motor rotor 7 in the middle of the motor 6, and air suspension bearings are also installed at both ends of the motor rotor 7, one of which is matched with the rear radial bearing seat 3, and the rear radial bearing seat 3 is fixedly connected between the main engine housing 4 and the first compressor housing 1. A cooling fan 9 is also installed at one end of the motor rotor 7, and the cooling fan 9 is located in the air intake cover inner cavity 200, and a gap is left between the cooling fan 9 and the inner wall of the air intake cover inner cavity 200.

[0030] As a further illustration of this example, the cooling fan 9 can generate wind force that can not only cool the heat generated by the motor rotor 7 but also accelerate the flow of cooling wind in the inner cavity 200 of the air intake hood.

[0031] A cooling cavity 403 is provided inside the main engine housing 4, and a cooling air inlet 402 is provided on the main engine housing 4. The cooling air inlet 402 is located on a side close to the rear radial bearing seat 3, and the cooling air inlet 402 is connected to one end of the cooling cavity 403. A first through hole 404 is provided on the side of the cooling cavity 403 away from the rear radial bearing seat 3, and the first through hole 404 is connected to one end of the motor installation inside the main engine housing 4. A mesh vent 300 is provided on the rear radial bearing seat 3 at the other end of the motor installation, and the vent 300 is connected to the air intake hood inner cavity 200 inside the air intake hood 2. A cooling air outlet 201 is provided on one side of the air intake hood 2, and the cooling air outlet 201 is connected to the air intake hood inner cavity 200.

[0032] As a further illustration of this example, the cooling air inlet 402 is externally connected to a fan, which blows the cooling air from the cooling air inlet 402 into one side of the cooling cavity 403, and the cooling air enters the motor 6 installation location on the inner side of the main housing 4 through the first through hole 404 on the other side of the cooling cavity 403, and flows inside the motor 6 installation location through a cooling channel with a gap between the stator of the motor 6 and the motor rotor 7, and then the cooling air enters the air intake hood inner cavity 200 inside the air intake hood 2 through the air vent 300 on the rear radial bearing seat 3, and is finally discharged from the cooling air outlet 201.

[0033] The working principle and use process of the utility model are as follows: when the motor 6 is started to supply high-pressure air, the air-cooling and water-cooling dual cooling system is started, and the fan presses the cooling air from the cooling air inlet 402 through the cooling cavity 403 and the first through hole 404 into the motor 6 installation position inside the main housing 4, and the cooling air passes through the cooling channel with a gap between the motor 6 stator and the motor rotor 7, and takes away the heat generated by the electronic rotor and enters the air inlet hood cavity 200, and is finally discharged from the cooling air outlet 201;

[0034] At the same time, the water pump presses the coolant in through the water inlet pipe 401, and the coolant circulates in the water channel between the cooling water jacket 5 and the main engine housing 4, taking away the heat generated by the motor 6 during the operation of the motor 6 stator, and finally the coolant is discharged from the water outlet pipe 400.

[0035] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above implementation measures. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A high-power air suspension centrifugal blower with a dual cooling system, characterized in that: The invention comprises a main engine casing (4), a first compressor casing (1), and a second compressor casing (8), wherein one end of the main engine casing (4) is fixedly connected to the second compressor casing (8), the other end of the main engine casing (4) is fixedly connected to one end of an air intake cover (2), the other end of the air intake cover (2) is fixedly connected to the first compressor casing (1), a cooling water jacket (5) provided with mutually communicating guide grooves (500) is fixedly installed on the inner side of the main engine casing (4), and a water inlet pipe (500) connected to the guide groove (500) is provided on the main engine casing (4). 401), a water outlet pipe (400), a motor (6) is fixedly mounted on the inner side of the cooling water jacket (5), a motor rotor (7) is arranged in the middle of the motor (6), compressor impellers are arranged at both ends of the motor rotor (7), a cooling cavity (403) connected to the outside and the motor (6) installation location is arranged inside the main engine housing (4), the motor (6) installation location is connected to the air intake hood inner cavity (200) inside the air intake hood (2), and a cooling air outlet (201) connected to the air intake hood inner cavity (200) is arranged on the air intake hood (2).

2. The high-power air suspension centrifugal blower with dual cooling system according to claim 1 is characterized in that: A cooling fan (9) is installed at one end of the motor rotor (7), and the cooling fan (9) is located in the inner cavity (200) of the air intake hood.

3. The high-power air suspension centrifugal blower with dual cooling system according to claim 2 is characterized in that: A gap is left between the cooling fan (9) and the inner wall of the air intake hood inner cavity (200).

4. The high-power air suspension centrifugal blower with dual cooling system according to claim 1 is characterized in that: A gap (501) is provided between adjacent guide grooves (500).

5. The high-power air suspension centrifugal blower with dual cooling system according to claim 1 is characterized in that: Air suspension bearings are installed at both ends of the motor rotor (7), and the air suspension bearing on the side close to the first compressor housing (1) cooperates with the rear radial bearing seat (3).

6. The high-power air suspension centrifugal blower with dual cooling system according to claim 5 is characterized in that: The rear radial bearing seat (3) is fixedly connected between the main engine casing (4) and the first compressor casing (1), and a vent hole (300) is provided on the rear radial bearing seat (3).

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