Oil-free air suspension high-speed motor for fuel cell air compressor

Abstract

The application discloses an oil-free air suspension high-speed motor for a fuel cell air compressor, which comprises a machine shell, a volute, a motor spindle, an end cover, a high-speed rotor and an intelligent air inlet filtering system, the volute is arranged on the machine shell and the end cover is arranged at the end of the volute, the volute comprises a low-pressure volute and a high-pressure volute which are connected in series, wherein the inner sides of the low-pressure volute and the high-pressure volute are respectively provided with a low-pressure impeller and a high-pressure impeller through pull rods; the intelligent air inlet filtering system is arranged at an air inlet of the machine shell, and the intelligent air inlet filtering system comprises an environment acquisition module, an air inlet filtering module and a control mainboard 15, wherein the environment acquisition module is used for acquiring the external environment of the high-speed motor, the environment acquisition module acquires the dust and particulate matter concentration of the external environment and feeds back the dust and particulate matter concentration to the control mainboard 15, and the control mainboard 15 controls the opening and closing of the air inlet filtering module and the filtering mode switching. The air compressor of the application adopts a switching type intelligent air inlet filtering system, which can save filter plate consumption and can cope with harsh environments.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air compressors, in particular to an oil-free air suspension high-speed motor for fuel cell air compressors. BACKGROUND

[0002] With the increasing consumption of global fossil fuels and the decreasing oil reserves, the demand for clean and sustainable new energy applications is increasing. Hydrogen fuel cell technology, as an important branch of clean new energy solutions, has been rapidly developed and applied. The air compressor for hydrogen fuel cells is an important component of the air supply system in the fuel cell system, and belongs to the front-end mechanism of the hydrogen fuel cell reactor. The air compressor is a device used to compress gas. The air compressor is similar in structure to a water pump. Most air compressors are reciprocating piston, rotating vane or rotating screw. Centrifugal compressors are very large applications. Currently, there are various forms of hydrogen fuel cell air compressors, including centrifugal and screw type air compressors.

[0003] Air compressor intake filtration is a necessary procedure for air compressors. Traditional air compressors filter air only by placing a layer of filter screen at the air inlet, which has poor adsorption and filtration effect, resulting in more impurities being absorbed onto the inner wall of the machine equipment, causing damage to the equipment. Moreover, the traditional air compressor filtration mode is constant, and when the external environment deteriorates, it cannot achieve better switching filtration, consumes filter plates, and has poor filtration effect. SUMMARY

[0004] The present application aims to provide an oil-free air suspension high-speed motor for fuel cell air compressors to solve the problems raised in the background.

[0005] In order to achieve the above object, the present application provides the following technical scheme: the fuel cell air compressor oil-free air suspension high-speed motor, including the casing, volute, motor spindle, end cover, high-speed rotor and intelligent air inlet filter system, the volute is installed on the casing and its end is equipped with the end cover, the volute includes the low-pressure volute, high-pressure volute that are connected with each other, wherein the low-pressure volute, high-pressure volute inside is equipped with low-pressure impeller, high-pressure impeller through draw bar respectively;The motor spindle is supported with support structure, and the high-speed rotor is arranged on the motor spindle;The support structure includes the low-pressure side support unit and high-pressure side support unit distributed in both ends of the motor spindle, wherein the low-pressure side support unit includes low-pressure side radial air bearing, low-pressure side radial air bearing seat and low-pressure side radial air bearing sleeve, wherein the low-pressure side radial air bearing sleeve is arranged around the outside of the motor spindle, the low-pressure side radial air bearing is arranged in the low-pressure side radial air bearing seat and around the outside of the low-pressure side radial air bearing sleeve, and the low-pressure side radial air bearing seat is arranged on the end cover through screws;The high-pressure side support unit includes high-pressure side radial air bearing, air thrust bearing and high-pressure side radial air bearing sleeve, and the high-pressure side radial air bearing is arranged around the outside of the motor spindle;The intelligent air inlet filter system is installed at the air inlet of the casing, and the intelligent air inlet filter system includes environment acquisition module, air inlet filter module and control mainboard, wherein the environment acquisition module is used to acquire the external environment of the high-speed motor, the dust and particulate matter concentration of the external environment are acquired by the environment acquisition module, and are fed back to the control mainboard, and the opening and closing of the air inlet filter module and the filter mode switching are controlled by the control mainboard;The air inlet filter module is installed at the air inlet of the casing, and the air inlet filter module includes filter housing, drive actuator and filter unit, wherein the filter housing is a rectangular housing, and the top right side and the bottom right side of the filter housing are respectively provided with air inlet and air outlet;A rotating shaft is arranged in the cavity of the filter housing, the rotating shaft is provided with a sleeve, and the end of the sleeve is connected with the filter unit, and the filter unit includes blocking plate, filter plate A, filter plate B and filter plate C distributed around the end of the sleeve, wherein the blocking plate, filter plate A, filter plate B and filter plate C divide the inner cavity of the filter housing into four equal cavities, and the external air enters the cavity surrounded by the blocking plate, filter plate A, filter plate B and filter plate C through the air inlet, and is discharged to the air inlet of the casing through the air outlet after filtration;The drive actuator is in transmission connection with the rotating shaft, and the position of the blocking plate, filter plate A, filter plate B and filter plate C can be switched during operation of the drive actuator, so as to realize the switching of the filter mode.

[0006] Preferably, the casing includes an outer casing, an inner casing and a water cooling assembly, and the outer surface of the inner casing and the inner surface of the outer casing are provided with a water cooling channel, and the water cooling assembly is connected with the water cooling channel, and the water cooling assembly includes a water inlet connector and a water outlet connector arranged on the outside of the outer casing.

[0007] Compared with the prior art, the present application has the following beneficial effects:

[0008] The air compressor of the present application adopts a switching type intelligent air inlet filtering system, which can switch modes according to the external dust and particulate matter concentration collected by the environment collection module, namely, when the external workshop environment is poor, one set of mode is switched, and when the external workshop environment is good, another set of mode is switched. This kind of mode can save filter plate consumption and can cope with harsh environment. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the present application;

[0010] Figure 2 It is a structural schematic diagram of the intelligent air inlet filtering system of the present application;

[0011] Figure 3 It is a structural schematic diagram of mode A in the embodiment of the present application;

[0012] Figure 4 It is a structural schematic diagram of mode B in the embodiment of the present application.

[0013] In the figure: 1, low pressure volute; 2, high pressure volute; 3, machine shell; 301, air inlet; 4, low pressure impeller; 5, high pressure impeller; 6, motor main shaft; 7, low pressure side radial air bearing; 8, high pressure side radial air bearing; 9, air thrust bearing; 10, water inlet joint; 11, water outlet joint; 12, environment collection module; 13, filter housing; 131, air inlet; 132, air outlet; 14, driving actuator; 15, control mainboard; 16, plugging plate; 17, filter plate A; 18, filter plate B; 19, filter plate C. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0015] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms “vertical”, “upper”, “lower”, “horizontal” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0016] In the description of the present application, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0017] Please refer to Figures 1-4 The present application provides a technical solution: fuel cell air compressor with oil-free air suspension high-speed motor, including shell 3, volute, motor spindle 6, end cover, high-speed rotor and intelligent air inlet filter system, the volute is installed on the shell 3 and its end is provided with end cover, the volute includes low pressure volute 1, high pressure volute 2 which are connected in series, wherein the inner side of low pressure volute 1, high pressure volute 2 is respectively provided with low pressure impeller 4, high pressure impeller 5 through pull rod; The motor spindle 6 is supported by a support structure, and the high-speed rotor is arranged on the motor spindle 6; The support structure includes low pressure side support unit and high pressure side support unit distributed on both ends of the motor spindle 6, wherein the low pressure side support unit includes low pressure side radial air bearing 7, low pressure side radial air bearing seat and low pressure side radial air bearing sleeve, wherein the low pressure side radial air bearing sleeve is arranged on the outside of the motor spindle 6, the low pressure side radial air bearing 7 is arranged in the low pressure side radial air bearing seat and around the outside of the low pressure side radial air bearing sleeve, and the low pressure side radial air bearing seat is arranged on the end cover through screws; The high pressure side support unit includes high pressure side radial air bearing 8, air thrust bearing 9 and high pressure side radial air bearing sleeve, and the high pressure side radial air bearing 8 is arranged on the outside of the motor spindle 6; The intelligent air inlet filter system includes environment acquisition module 12, air inlet filter module and control mainboard 15, wherein the environment acquisition module 12 is used for acquiring the external environment of the high-speed motor, the environment acquisition module 12 acquires the dust and particulate matter concentration of the external environment, and feeds back to the control mainboard 15, and the control mainboard 15 controls the opening and closing of the air inlet filter module and the switching of the filtering mode; The air inlet filter module is arranged at the air inlet 301 of the shell 3, and the air inlet filter module includes a filter housing 13, a drive actuator 14 and a filter unit, wherein the filter housing 13 is a rectangular housing, and the top right side and the bottom right side of the filter housing 13 are respectively provided with an air inlet 131 and an air outlet 132. A rotating shaft is arranged in the cavity of the filter housing 13, the rotating shaft is provided with a sleeve, and the end of the sleeve is connected with the filter unit, and the filter unit includes a plurality of blocking plates 16, filter plates A 17, filter plates B 18 and filter plates C 19 distributed around the end of the sleeve.

[0018] In the embodiment, the casing 3 comprises an outer casing, an inner casing and a water cooling assembly, the outer surface of the inner casing and the inner surface of the outer casing are provided with water cooling channels, the water cooling assembly is connected with the water cooling channels, and the water cooling assembly comprises a water inlet joint 10 and a water outlet joint 11 arranged on the outer side of the outer casing.

[0019] In the embodiment, the blocking plate 16, the filter plate A 17, the filter plate B 18 and the filter plate C 19 divide the inner cavity of the filter housing 13 into four equal cavities, external air enters the cavity surrounded by the blocking plate 16, the filter plate A 17, the filter plate B 18 and the filter plate C 19 through the air inlet 131, and is filtered and then discharged to the air inlet 301 of the casing 3 through the air outlet 132.

[0020] In the embodiment, the driving actuator 14 can be in transmission connection with the rotating shaft rod, and the driving actuator can switch the positions of the blocking plate 16, the filter plate A 17, the filter plate B 18 and the filter plate C 19 during operation to realize the switching of the filtering mode.

[0021] In the embodiment, the filtering mode A is as shown in Figure 3 , the filtering mode B is as shown in Figure 4 , the filtering mode A is that the blocking plate 16 is arranged transversely, and the blocking plate 16 blocks the vertical air inlet, so that the external air has to pass through the filter plate A 17, the filter plate B 18 and the filter plate C 19 in sequence to the air outlet 132, and the filtering mode A can filter the external environment when the concentration of dust and particulate matter is large, that is, the filtering mode A adopts the multi-stage filtering structure composed of the filter plate A 17, the filter plate B 18 and the filter plate C 19; and the filtering mode B is that the blocking plate 16 is arranged vertically in the filtering mode B, and the blocking plate 16 blocks the lateral air inlet, so that the air directly passes through the air inlet 131 to the air outlet 132, and the filter plate C 19 filters the air in the process.

[0022] It is worth noting that the entire device is controlled by the total control button, and since the control button is matched with a commonly used device, it belongs to the existing mature technology, and the electrical connection relationship and the specific circuit structure are not described here.

[0023] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An oil-free air bearing high speed motor for fuel cell air compressor, characterized by, The utility model relates to a kind of high-speed motor, including shell (3), volute, motor spindle (6), end cover, high-speed rotor and intelligent intake filter system, the volute is installed on shell (3) and its end is equipped with end cover, volute includes low pressure volute (1), high pressure volute (2) being connected with each other, wherein low pressure volute (1), high pressure volute (2) inside is equipped with low pressure impeller (4), high pressure impeller (5) by pull rod respectively;The motor spindle (6) is supported with support structure, and high-speed rotor is equipped on motor spindle (6);The support structure includes low pressure side support unit and high pressure side support unit distributed in both ends of motor spindle (6), wherein low pressure side support unit includes low pressure side radial air bearing (7), low pressure side radial air bearing seat and low pressure side radial air bearing sleeve, wherein low pressure side radial air bearing sleeve is around the outside of motor spindle (6), low pressure side radial air bearing (7) is equipped in low pressure side radial air bearing seat, and around the outside of low pressure side radial air bearing sleeve, low pressure side radial air bearing seat is equipped on end cover by screw;The high pressure side support unit includes high pressure side radial air bearing (8), air thrust bearing (9) and high pressure side radial air bearing sleeve, and high pressure side radial air bearing (8) is around the outside of motor spindle (6);The intelligent intake filter system includes environment acquisition module (12), intake filter module and control mainboard (15), wherein environment acquisition module (12) is used to collect the external environment where high-speed motor is located, and the dust and particulate matter concentration of external environment are collected, and are fed back to control mainboard (15), and the opening and closing of intake filter module and the filter mode switching are controlled by control mainboard (15);Intake filter module is installed at air inlet (301) of shell (3), and intake filter module includes filter housing (13), drive actuator (14) and filter unit, wherein filter housing (13) is a rectangular housing, and the top right side and the bottom right side of filter housing (13) are equipped with air inlet (131), air outlet (132) respectively; The shell (3) includes outer shell, inner shell and water cooling assembly, and the outer surface of the inner shell and the inner surface of the outer shell are provided with water cooling channels, and the water cooling assembly is connected with the water cooling channels, and the water cooling assembly includes water inlet connector (10) and water outlet connector (11) provided on the outer side of the outer shell; The filter housing (13) cavity inside is provided with a rotating shaft, the rotating shaft is provided with a shaft sleeve, and the end of the shaft sleeve is connected with a filter unit, and the filter unit includes a blocking plate (16), a filter plate A (17), a filter plate B (18) and a filter plate C (19) distributed around the end of the shaft sleeve; The blocking plate (16), the filter plate A (17), the filter plate B (18) and the filter plate C (19) divide the inner cavity of the filter housing (13) into four equal cavities, and the external air enters the cavity surrounded by the blocking plate (16), the filter plate A (17), the filter plate B (18) and the filter plate C (19) through the air inlet (131), and is discharged to the air inlet (301) of the shell (3) through the air outlet (132) after filtration. The driving actuator (14) can be in transmission connection with a rotating shaft, and the driving actuator can drive the position of the blocking plate (16), the filter plate A (17), the filter plate B (18) and the filter plate C (19) to switch during operation, so as to realize the filter mode switching.

Images