CN215566893U

CN215566893U - High-speed centrifugal air compressor based on air dynamic pressure bearing

Info

Publication number: CN215566893U
Application number: CN202121996191.3U
Authority: CN
Inventors: 彭军; 顾奚斌; 王荣奎
Original assignee: Shanghai Rongentropy Power Technology Co ltd
Current assignee: Shanghai Rongentropy Power Technology Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-01-18
Anticipated expiration: 2031-08-24

Abstract

The utility model relates to the technical field of air compressors, and particularly discloses a high-speed centrifugal air compressor based on an air dynamic pressure bearing, which comprises an air compressor main body and a radiating shell, wherein the air compressor main body is provided with a heat radiating shell; the heat dissipation shell is sleeved outside the air compressor main body; the inner part of the radiating shell is provided with a water cooling pipeline with a spiral structure in a surrounding manner, one end of the water cooling pipeline is provided with a water inlet, the other end of the water cooling pipeline is provided with a water outlet, a plurality of radiating fins are arranged on the inner side wall of the water cooling pipeline at intervals, and one ends of the radiating fins, far away from the water cooling pipeline, are inserted into the radiating shell; the radiator is provided with a connecting through hole, the inside of the connecting through hole is provided with an air duct in a penetrating mode, one end of the air duct is provided with an air inlet, and the other end of the air duct is provided with an air outlet. The heat dissipation shell is sleeved outside the air compressor, the energy-saving heat dissipation mechanism is installed inside the heat dissipation shell, and the air compressor main body is cooled in an auxiliary mode through the matching of the ventilating pipeline and the cooling fins, so that the purpose of uniform heat dissipation of the air compressor main body is achieved.

Description

High-speed centrifugal air compressor based on air dynamic pressure bearing

Technical Field

The utility model relates to the technical field of air compressors, in particular to a high-speed centrifugal air compressor based on an air dynamic pressure bearing.

Background

In the aspect of new energy, the automobile powered by the hydrogen fuel cell has high power performance, quick hydrogenation and long endurance, and is the most strategic breakthrough of the new energy automobile in the 21 st century. The air compressor can provide high-pressure air source for the fuel cell system, and compared with a screw compressor and a scroll compressor, the centrifugal air compressor can provide air source with higher pressure ratio, and power density and overall performance of the electric pile are obviously improved.

In order to match the performance of a fuel cell system, the rotating speed of the small centrifugal compressor is high, the rotor and ambient air generate violent friction to generate a large amount of heat energy, so that the temperature of the rotor is increased and deformed, and the heat is also transferred to the bearing, which can cause the high-temperature failure of the bearing; under the effect of superspeed, the temperature of the motor stator can also rise rapidly, if the motor stator cannot be cooled in time, the service life of the insulating material is affected by excessive heat, the output power of the motor is reduced, and the motor is burnt in severe cases.

For the above situation, the prior patent application numbers are: CN202022296068.2, patent name: the utility model provides a centrifugal permanent-magnet machine of two-stage air suspension directly drives cooling system's of air compressor machine utility model patent, this scheme is through setting up the forced air cooling induced air joint on the arbitrary position between the throat of one-level spiral case and one-level spiral case outlet side, introduces the motor casing with partial compressed gas as cooling gas, realizes cooling motor casing, rotor, motor stator, the first and second grade seal receptacle, the first and second grade bearing frame, journal bearing, footstep bearing and thrust disc. When the cooling system is actually used, the structure is complex, so that uneven heat dissipation is easily caused, and the energy consumption of the cooling mode is large, so that the economic benefit is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-speed centrifugal air compressor based on an air dynamic pressure bearing, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-speed centrifugal air compressor based on an air dynamic pressure bearing comprises an air compressor main body and a heat dissipation shell; the air compressor comprises an air compressor main body, a heat dissipation shell, a main shaft and a main shaft, wherein the heat dissipation shell is sleeved outside the air compressor main body, the air compressor main body comprises a stator and a rotor which are arranged inside the heat dissipation shell, the main shaft is arranged at the left end and the right end of the rotor, and an air bearing is arranged on the main shaft; the inner part of the radiating shell is provided with a water cooling pipeline with a spiral structure in a surrounding manner, one end of the water cooling pipeline is provided with a water inlet, the other end of the water cooling pipeline is provided with a water outlet, a plurality of radiating fins are arranged on the inner side wall of the water cooling pipeline at intervals, and one ends of the radiating fins, far away from the water cooling pipeline, are inserted into the radiating shell; the radiator is provided with a connecting through hole, the inside of the connecting through hole is provided with an air duct in a penetrating mode, one end of the air duct is provided with an air inlet, and the other end of the air duct is provided with an air outlet.

Preferably, the water inlet, the water outlet, the air inlet and the air outlet are all arranged on the outer side of the heat dissipation shell.

Preferably, the air inlet is arranged on the inner side of the water inlet, and the air outlet is arranged on the inner side of the water outlet.

Preferably, the air pipe comprises a plurality of pipeline of buckling, and the outlet has all been seted up to the bottom of each pipeline of buckling, and the bottom of outlet passes through branch pipe intercommunication drain pipe.

Preferably, one end of the drain pipe, which is far away from the ventilation pipeline, is arranged at the bottom of the outer side of the heat dissipation shell, and a sealing cover is installed in a threaded manner.

Preferably, one end of the radiating fin close to the water cooling pipeline is fixedly provided with a heat conduction hoop made of the same material as the radiating fin, and the heat conduction hoop is fixedly sleeved on the water cooling pipeline.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a high-speed centrifugal air compressor based on an air dynamic pressure bearing, wherein a heat dissipation shell is sleeved outside the air compressor, an energy-saving heat dissipation mechanism is arranged inside the heat dissipation shell, the heat dissipation mechanism mainly comprises a water cooling pipeline and a ventilation pipeline which are arranged in the heat dissipation shell in a surrounding mode, the air compressor main body is cooled through the water cooling pipeline, the air compressor main body is cooled in an auxiliary mode through the matching of the ventilation pipeline and a heat dissipation sheet, the purpose of uniformly dissipating heat of the air compressor main body is achieved through the combination of air cooling and water cooling, the service life of the air compressor main body is prolonged, and the cooling mode has the characteristics of low energy consumption, low cost, energy conservation, environmental protection and the like.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a front view of the ventilation duct and water-cooled duct of the present invention;

FIG. 3 is a side view of the ventilation duct and water-cooled duct of the present invention;

fig. 4 is a schematic structural diagram of the heat sink of the present invention.

In the figure: 1. a heat dissipating housing; 2. a stator; 3. a rotor; 4. a main shaft; 5. an air bearing; 6. a water-cooled pipeline; 7. a water inlet; 8. a sealing cover; 9. a heat-conducting embracing ring; 10. a water outlet; 11. a heat sink; 12. a connecting through hole; 13. a ventilation duct; 14. an air inlet; 15. an air outlet; 16. and a water discharge pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-4, the present invention provides a technical solution: a high-speed centrifugal air compressor based on an air dynamic pressure bearing comprises an air compressor main body and a heat dissipation shell 1; the heat dissipation shell 1 is sleeved outside the air compressor main body, the air compressor main body comprises a stator 2 and a rotor 3 which are arranged inside the heat dissipation shell 1, main shafts 4 are arranged at the left end and the right end of the rotor 3, and air bearing bearings 5 are arranged on the main shafts 4; a water cooling pipeline 6 with a spiral structure is arranged in the radiating shell 1 in a surrounding manner, one end of the water cooling pipeline 6 is provided with a water inlet 7, the other end of the water cooling pipeline 6 is provided with a water outlet 10, a plurality of radiating fins 11 are arranged on the inner side wall of the water cooling pipeline 6 at intervals, and one ends of the radiating fins 11 far away from the water cooling pipeline 6 are inserted into the radiating shell 1; the heat sink 11 is provided with a connecting through hole 12, a ventilation duct 13 penetrates through the connecting through hole 12, one end of the ventilation duct 13 is provided with an air inlet 14, and the other end of the ventilation duct is provided with an air outlet 15.

Further, the water inlet 7, the water outlet 10, the air inlet 14 and the air outlet 15 are all arranged on the outer side of the heat dissipation shell 1.

Further, the air inlet 14 is arranged at the inner side of the water inlet 7, and the air outlet 15 is arranged at the inner side of the water outlet 10.

Further, the ventilation duct 13 is composed of a plurality of bent ducts, a water outlet is formed in the bottom end of each bent duct, and the bottom end of the water outlet is communicated with a water discharge pipe 16 through a branch pipe.

Further, an end of the drain pipe 16 remote from the ventilation duct 13 is provided at the bottom outside the heat radiation housing 1, and the sealing cover 8 is screw-fitted.

Furthermore, one end of the radiating fin 11 close to the water cooling pipeline 6 is fixedly provided with a heat conduction hoop 9 which is made of the same material as the radiating fin, and the heat conduction hoop 9 is fixedly sleeved on the water cooling pipeline 6.

The working principle is as follows: when the temperature of the air compressor main body is high, cooling water is introduced into the water cooling pipeline 6 through the water inlet 7, so that the air compressor main body can be cooled by water, air is introduced into the ventilating pipeline 13 through the air inlet 14, the ventilating pipeline 13 is nested in the radiating fin 11, and the radiating fin 11 is sleeved on the outer wall of the water cooling pipeline 6 through the heat conduction hoop 9, so that the radiating fin 11 can transmit the low temperature on the water cooling pipeline 6 to the deep part of the radiating shell 1 and the ventilating pipeline 13, the air introduced into the ventilating pipeline 13 can be rapidly cooled, and the purpose of auxiliary heat radiation of the air compressor main body is further realized; and because outside high temperature air gets into microthermal air pipe 13 after for the water vapour in the air condenses into the water droplet easily, can collect it to drain pipe 16 through the outlet of air pipe 13 bottom, concentrates it to discharge, avoids causing adverse effect to the air compressor main part.

It is worth noting that: the whole device realizes control to the device through the controller, and the controller is common equipment and belongs to the existing mature technology, and the electrical connection relation and the specific circuit structure of the controller are not repeated herein.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high-speed centrifugal air compressor machine based on air dynamic pressure bearing which characterized in that: comprises an air compressor main body and a heat dissipation shell (1); the air compressor comprises a heat dissipation shell (1), an air compressor main body and a control system, wherein the heat dissipation shell (1) is sleeved outside the air compressor main body, the air compressor main body comprises a stator (2) and a rotor (3) which are arranged inside the heat dissipation shell (1), main shafts (4) are arranged at the left end and the right end of the rotor (3), and air bearing bearings (5) are arranged on the main shafts (4); a water cooling pipeline (6) with a spiral structure is arranged in the radiating shell (1) in a surrounding mode, one end of the water cooling pipeline (6) is provided with a water inlet (7), the other end of the water cooling pipeline is provided with a water outlet (10), a plurality of radiating fins (11) are arranged on the inner side wall of the water cooling pipeline (6) at intervals, and one ends, far away from the water cooling pipeline (6), of the radiating fins (11) are inserted into the radiating shell (1); connecting through holes (12) are formed in the radiating fins (11), ventilating pipelines (13) penetrate through the connecting through holes (12), air inlets (14) are formed in one ends of the ventilating pipelines (13), and air outlets (15) are formed in the other ends of the ventilating pipelines.

2. The high-speed centrifugal air compressor based on aerodynamic bearing as claimed in claim 1, wherein: the water inlet (7), the water outlet (10), the air inlet (14) and the air outlet (15) are all arranged on the outer side of the heat dissipation shell (1).

3. The high-speed centrifugal air compressor based on aerodynamic bearing as claimed in claim 1, wherein: the air inlet (14) is arranged on the inner side of the water inlet (7), and the air outlet (15) is arranged on the inner side of the water outlet (10).

4. The high-speed centrifugal air compressor based on aerodynamic bearing as claimed in claim 1, wherein: the ventilation pipeline (13) is composed of a plurality of bent pipelines, a water outlet is formed in the bottom end of each bent pipeline, and the bottom end of the water outlet is communicated with a water discharge pipe (16) through a branch pipe.

5. The high-speed centrifugal air compressor based on aerodynamic bearing as claimed in claim 4, wherein: one end of the drain pipe (16) far away from the ventilation pipeline (13) is arranged at the bottom of the outer side of the heat dissipation shell (1), and a sealing cover (8) is installed in a threaded mode.

6. The high-speed centrifugal air compressor based on aerodynamic bearing as claimed in claim 1, wherein: one end of the radiating fin (11) close to the water cooling pipeline (6) is fixedly provided with a heat conduction hoop (9) which is made of the same material as the water cooling pipeline, and the heat conduction hoop (9) is fixedly sleeved on the water cooling pipeline (6).