CN111173779B - Fuel cell vehicle air filter for extremely cold environment and air filtering method - Google Patents
Fuel cell vehicle air filter for extremely cold environment and air filtering method Download PDFInfo
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- CN111173779B CN111173779B CN202010036407.5A CN202010036407A CN111173779B CN 111173779 B CN111173779 B CN 111173779B CN 202010036407 A CN202010036407 A CN 202010036407A CN 111173779 B CN111173779 B CN 111173779B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04253—Means for solving freezing problems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0446—Means for feeding or distributing gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4263—Means for active heating or cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
Abstract
The invention discloses a fuel cell vehicle air filter for an extremely cold environment and an air filtering method, wherein the fuel cell vehicle air filter comprises a double-rotor disc type motor, wherein the axis of the disc type motor is an inner wall shell, and the inner wall shell is used for air inlet and exhaust, grading dehumidification and harmful gas adsorption; the disc type motor is fixedly connected with the middle wall shell, and the inner side of the middle wall shell is provided with a spiral ridge protrusion; the disc type motor is further fixedly connected with the outer wall shell, a resistance wire heating assembly is arranged between the outer wall and the middle wall and used for melting ice and snow to prevent the ice and snow from accumulating to block an air channel, a plurality of holes are formed in the bottom end of the outer wall shell, and a leaf protrusion is arranged on the inner side of the bottom surface. Air containing various impurities downwards passes through the spiral channel, so that the impurities are centrifugally moved and fall on the bottom surface of the outer wall shell, and the lobes rotate to discharge large-particle impurities out of gaps; and then the air enters the inner wall shell, is subjected to graded dehumidification and harmful gas absorption and then is discharged. The invention solves the problems that the prior air filter has weak self-cleaning performance, the filter element is blocked by condensed liquid drops and an air passage is blocked by ice and snow.
Description
Technical Field
The invention belongs to the technical field of air supply system design of fuel cell vehicles, and relates to an air filter and an air filtering method for a fuel cell vehicle in an extremely cold environment.
Background
The current use of fossil fuels meets 80% of the world's energy needs, but there are two serious problems with the continued use of fossil fuels: firstly, the reserves are limited and will be exhausted sooner or later; secondly, the use of fossil fuel has caused a series of serious environmental problems such as global warming, ozone depletion, acid rain, and the like, and the adoption of a novel clean and efficient energy source is urgent. Hydrogen is the lightest, cleanest, most efficient fuel, which can directly convert chemical energy into electrical energy in a fuel cell, with extremely high energy utilization. The proton exchange membrane fuel cell is the first choice of the vehicle fuel cell by virtue of the advantages of high power density, low working temperature, small volume, quick start and the like. However, the proton exchange membrane fuel cell has extremely high requirements on air during operation, and toxic and harmful substances such as sulfur, carbon monoxide and the like can cause catalyst poisoning and inactivation. In addition, to increase the power of the fuel cell stack, the fuel cell needs to be operated at a higher pressure, which is provided by a centrifugal compressor. The requirements of the centrifugal compressor on air suction are also strict, and the blades of the air compressor rotating at high speed can generate abnormal vibration due to particles, liquid drops and the like in the air, and even the air compressor can be damaged in serious cases; therefore, the air filter must effectively block and trap various liquid drops and particles in the sucked air, and preferably absorb toxic and harmful gases in the air, so as to strictly and thoroughly filter the air entering the air compressor and the fuel cell stack. Due to the influence of industrial areas, construction sites and other areas, various pollutants, including various toxic and harmful gases and dust such as PM2.5 and the like, exist in the air in large quantities in cities. In addition, if the application range of the fuel cell vehicle is to be expanded, the fuel cell vehicle can be comprehensively replaced in the future, and the fuel cell vehicle still needs to be moved out of a city, and normally operates and completes various works under severe air conditions such as a high-altitude mountain area, a damp and hot rainforest area, a sandy desert area and the like. The filter element of the air filter of the existing fuel cell vehicle mainly comprises microporous filter paper, non-woven fabric, fiber filter element and the like which are processed by resin, and a composite filter element which combines the filter elements, and impurities in the air are separated by the principles of screening, precipitation, interception and percolation. For traditional fuel oil mine vehicles, heavy-duty trucks and the like working in the environment with much sand and dust, a cyclone prefilter is additionally arranged in front of a main filter element using microporous filter paper to remove large-particle impurities in inlet air, so that the burden of the main filter element is reduced. Although filter elements such as filter paper, woven cloth, fibers and the like operate well in a dry environment, once a large amount of liquid drops or ice crystals are entrained in air, water melted by the liquid drops and the ice crystals is continuously condensed on the fibers of the filter elements to block micropores among the fibers, so that air inlet resistance is greatly increased; the cyclone prefilter works well in a dusty environment, but in a wind and snow environment in a severe cold area, when a large amount of ice and snow fragments enter a cyclone channel, ice and snow are accumulated in the channel at a very high speed to block the channel, so that air inlet resistance is increased, and even air cannot be introduced. Meanwhile, the existing air filter has less self-cleaning function, and the scheme of the filter cannot remove toxic and harmful gases in the air.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an air filter of a fuel cell vehicle for an extremely cold environment and an air filtering method, which are used for improving the limitations that the air filter of the existing fuel cell vehicle is easy to be blocked by ice and snow, has weak self-cleaning force and cannot remove harmful gases harmful to a fuel cell pack.
A fuel cell vehicle air filter for extremely cold environment is sequentially provided with an inner wall shell, a middle wall shell and an outer wall shell which are coaxial and cylindrical from inside to outside, wherein the outer side of the upper part of the inner wall shell is rotatably connected with the middle wall shell and the outer wall shell, and a double-rotor disc type motor is arranged between the middle wall shell and the outer wall shell; a bent inner wall clapboard is arranged inside the inner wall shell, and an opening is arranged at the joint of the inner wall shell and the inner wall clapboard; the inner wall partition board is provided with a lifting rod, the bottom end of the lifting rod is sequentially provided with an annular partition cylinder and a horizontal partition board, the bottom of the horizontal partition board is provided with a humidity sensor, the outer wall of the annular partition cylinder is tightly attached to the water absorbing material partition cylinder, the water absorbing material partition cylinder is fixedly connected with the inner wall shell, and a gap is arranged at the fixedly connected position; the upper end of the water absorbing material separating cylinder is provided with a long through hole; and a water absorbing material is filled between the water absorbing material separating cylinder and the inner wall shell, and a harmful gas adsorbing material is filled between the inner wall shell and the inner wall separating plate.
In the technical scheme, the inner wall of the middle wall shell is provided with a spiral ridge.
In the technical scheme, the resistance wire heating component is attached to the outer wall of the middle-wall shell.
In the technical scheme, the top end of the lifting rod is connected with the servo motor, and the servo motor is controlled by the controller.
In the technical scheme, the inner side of the bottom of the outer wall shell is provided with the lobe, and the bottom of the outer wall shell is also provided with a gap.
Air containing various impurities enters a spiral channel at an opening of an inner wall shell, separated air enters the inner wall shell, enters different flow directions according to different air humidity and finally flows out of a filter device.
Further, the air humidity includes that the air is not humid, the air is relatively humid, and the air is extremely humid.
Furthermore, when the air is not humid, the air is separated from the inner wall channel of the cylinder by the water absorption material, flows through the harmful gas adsorption material and flows out of the filter device.
Furthermore, when the air is moist, the air passes through a part of the water absorbing material, enters the channel on the inner wall of the water absorbing material separating cylinder through the long through hole, flows through the harmful gas adsorbing material and flows out of the filter device.
Further, when the air is extremely humid, the air passes through the water absorbing material, passes through the harmful gas adsorbing material, and flows out of the filter device.
The invention has the beneficial effects that:
(1) the filter is provided with the spiral channel, the water absorbing material and the harmful gas adsorbing material, small particle impurities, ice crystals and liquid drops are filtered by means of the compact porous structure of the water absorbing material and the harmful gas adsorbing material fibers, and the water absorbing material and the harmful gas adsorbing material are compact porous fiber structures, so that high-frequency noise generated when the air compressor runs can be effectively reduced, and the driving experience of a fuel cell vehicle is greatly improved.
(2) The filter disclosed by the invention abandons the traditional filter paper, realizes the combination of rotational flow rough filtration and fiber micropore fine filtration by virtue of the spiral channel, the water absorbing material and the harmful gas absorbing material, integrates various impurity removal modes of centrifugal separation, inertial separation, screening filtration and interception filtration into a whole, has a remarkable filtering effect, can remove components harmful to a fuel cell stack in inlet air, improves the operating environment of the fuel cell stack, and prolongs the service life of the fuel cell stack. Meanwhile, the rotational flow rough filtering section and the fiber micropore fine filtering section are coaxially nested, so that the device is compact in structure, small in occupied space and beneficial to installation and use of vehicles.
(3) The filter adopts a double-rotor disc type motor (composed of a stator magnet 7, a rotor coil 8, a stator magnet support 9 and a rotor iron core 23) with compact and efficient structure, the middle-wall shell and the outer-wall shell are driven by the double-rotor disc type motor and can operate respectively or simultaneously, the flow of air in the device is accelerated, the filtering effect is further improved, meanwhile, the device has self-cleaning capability, and the working effect of the device in a severe environment is further ensured.
(4) The resistance wire heating component is arranged in the filter, when the device works in a wind and snow environment, the resistance wire heating component can timely melt ice and snow which enter along with air and are accumulated in the air channel, the condition that air inlet resistance is increased or air cannot be introduced due to the fact that the air channel is blocked by the ice and snow is avoided, normal operation of the fuel cell vehicle in the wind and snow environment is guaranteed, the operation range of the fuel cell vehicle is expanded, the fuel cell process of vehicle power is promoted, and the current energy shortage and the environmental problem are relieved.
(5) The gas dehumidification function of the filter is adjustable and controllable graded dehumidification, the passing length of gas in the water absorbing material can be controlled according to different gas humidity, the water absorbing material is prevented from being insufficiently utilized, and meanwhile, the air inlet resistance under different dehumidification requirements is reduced to the greatest extent.
Drawings
FIG. 1 is a schematic view of an air cleaner for a fuel cell vehicle for use in an extremely cold environment according to the present invention;
FIG. 2 is a schematic view of the bottom surface and the lobe of the outer wall casing of the present invention;
FIG. 3 is a schematic diagram of different positions of the lift lever of the present invention, wherein FIG. 3(a) is a schematic diagram of the lift lever of the present invention in the highest position, FIG. 3(b) is a schematic diagram of the lift lever of the present invention in the middle position, and FIG. 3(c) is a schematic diagram of the lift lever of the present invention in the lowest position;
FIG. 4 is a schematic view of the air flow path and the impurity removal process of the apparatus of the present invention;
fig. 5 is a flow chart illustrating the operation of an air cleaner for a fuel cell vehicle for an extremely cold environment according to the present invention.
The device comprises a servo motor 1, a lifting rod 2, an inner wall shell 3, a middle wall shell 4, an outer wall shell 5, a resistance wire heating component 6, a stator magnet 7, a rotor coil 8, a stator magnet support 9, a deep groove ball bearing 10, a horizontal partition plate 11, a water absorption material partition cylinder 12, a water absorption material partition cylinder 13, a spiral ridge projection 14, a harmful gas adsorption material 15, a long through hole 16, a leaf projection 17, a partition cylinder support A18, an annular partition cylinder 19, a humidity sensor 20, a partition cylinder support B21, an inner wall partition plate 22 and a rotor iron core 23.
Detailed Description
The technical solution of the present invention will be further described with reference to the accompanying drawings, but the scope of the present invention is not limited thereto.
As shown in fig. 1, the air cleaner for the fuel cell vehicle in the extremely cold environment comprises a servo motor 1, a lifting rod 2, an inner wall shell 3, a middle wall shell 4, an outer wall shell 5, a resistance wire heating component 6, a stator magnet 7, a rotor coil 8, a stator magnet support 9, a deep groove ball bearing 10, a horizontal partition plate 11, a water absorbing material partition barrel 12, a water absorbing material 13, a spiral ridge protrusion 14, a harmful gas adsorbing material 15, a long through hole 16, a lobe 17, a partition barrel support A18, an annular partition barrel 19, a humidity sensor 20, a partition barrel support B21, an inner wall partition plate 22 and a rotor iron core 23. The resistance wire heating component 6 and the rotor coil 8 are both connected with an external power supply, and the on-off of the external power supply is controlled by the controller; the servo motor 1 is controlled by a controller, and the humidity sensor 20 is in signal connection with the controller. The water absorbing material 13 and the harmful gas adsorbing material 15 are both of a dense porous fiber structure.
The device is wholly three-layer coaxial cylinder shell structure, be inner wall casing 3 from inside to outside in proper order, well wall casing 4 and outer wall casing 5, outer wall casing 5 and well wall casing 4 are fixed respectively through upper and lower two deep groove ball bearing 10 in the 3 upper portion outsides of inner wall casing, the inside inner wall baffle 22 that is equipped with the form of bending that is equipped with of inner wall casing 3, inner wall baffle 22 bottom is as an organic whole with the processing of inner wall casing 3, and be equipped with the opening on the inner wall casing 3 of inner wall baffle 22 bottom and the junction of inner wall casing 3. The inner wall partition plate 22 is provided with a through hole for the lifting rod 2 to pass through, the top end of the lifting rod 2 is connected with the output shaft of the servo motor 1, and the bottom end of the lifting rod is fixedly connected with the horizontal partition plate 11 into a whole; the lifting rod 2 above the horizontal partition plate 11 is fixedly connected with an annular partition cylinder 19 through a partition cylinder support A18, the bottom of the horizontal partition plate 11 is connected with a humidity sensor 20 in an adhesive manner, the outer wall of the annular partition cylinder 19 is tightly attached to the inner wall of a water absorbing material partition cylinder 12, the lower end of the water absorbing material partition cylinder 12 is fixedly connected with the inner wall shell 3 into a whole through a partition cylinder support B21, the upper end of the water absorbing material partition cylinder 12 is provided with a long through hole 16, and air can pass through the water absorbing material partition cylinder support 21; the water absorbing material 13 is filled between the water absorbing material separating cylinder 12 and the inner wall shell 3, the harmful gas absorbing material 15 is arranged above the water absorbing material 13, the harmful gas absorbing material 15 is filled between the inner wall shell 3 and the inner wall separating plate 22 and is used for absorbing harmful gas possibly damaging the fuel cell stack in the air, and meanwhile, the compact porous structure of the harmful gas absorbing material 15 can realize the filtration of fine ice crystals and fine impurities; one side filled with the harmful gas adsorbing material 15 is an air outflow passage, and the other side is an air intake passage. A stator magnet support 9 is fixed on the outer side of the inner wall shell 3, the stator magnet support 9 is positioned between the middle wall shell 4 and the outer wall shell 5, stator magnets 7 are respectively fixed on the upper side and the lower side of the stator magnet support 9, stator iron cores 23 are respectively embedded in the outer wall shell 5 and the middle wall shell 4, rotor coils 8 are wound on the outer sides of the stator iron cores 23, and the stator magnets 7 are vertically aligned with the rotor coils 8; the stator magnet 7, the rotor coil 8, the stator magnet holder 9, and the rotor core 23 constitute a double-rotor disk motor.
The inner wall of the middle wall shell 4 is provided with a spiral ridge 14, so that a spiral channel is formed in the space between the middle wall shell 4 and the inner wall shell 3, air is guided to do spiral motion in the downward flowing process, and further, impurities, ice crystals and liquid drops in the air are centrifugally separated. The resistance wire heating component 6 is attached to the outer wall of the middle wall shell 4, when the resistance wire heating component 6 is powered on, the middle wall shell 4 and the space between the middle wall shell 4 and the outer wall shell 5 are heated, and the generated heat is conducted to the inner side of the middle wall shell 4 and the spiral ridge 14, so that ice crystals entering along with air and attached to and accumulated in a channel between the middle wall shell 4 and the inner wall shell 3 are melted in a wind and snow environment, and the ice crystals are prevented from being continuously accumulated to block the air channel. Meanwhile, the spiral ridge 14 can guide the liquid drops condensed on the middle wall shell 4 and the spiral ridge 14 downwards and drop on the outer wall shell 5 during the rotation process.
A plurality of lobes 17 (fig. 2) perpendicular to the bottom of the outer wall shell 5 are processed on the inner side of the bottom of the outer wall shell 5, and a plurality of gaps are arranged on the outer wall shell 5 at the lobes 17.
As shown in fig. 3, the lifting rod 2 of this embodiment can drive the annular partition cylinder 19 and the horizontal partition plate 11 to slide up and down in the water-absorbing material partition cylinder 12 under the control of the servo motor 1, the annular partition cylinder 19 can block the long through hole 16 during the sliding process, and the horizontal partition plate 11 can block the pipeline in the water-absorbing material partition cylinder 12. Because the length of the long through hole 16 changes in the up-and-down sliding process of the annular partition cylinder 19, air flows out from different positions of the long through hole 16 through the water absorbing material 13 to form a gas channel with variable length, and further, the gas is dehumidified in a grading manner.
When current is introduced into the rotor coil 8, the rotor core 23 generates a magnetic field, and the stator magnet 7 rotates in the magnetic field, so that the outer wall shell 5 and the middle wall shell 4 are driven to rotate around the inner wall shell 3 respectively or simultaneously. When the middle wall shell 4 rotates, the spiral channel between the middle wall shell 4 and the inner wall shell 3 becomes a rotating channel, the flow speed of air in the channel is accelerated, and further the centrifugal separation efficiency of large-diameter impurities, ice crystals and liquid drops is improved; when the outer wall shell 5 rotates, the lobe 17 rotates along with the outer wall shell 5, so that the centrifugal action is generated on impurities, liquid and ice crystals accumulated on the inner side of the bottom surface of the shell 5, the impurities, the liquid and the ice crystals are promoted to be discharged out of the filter from a gap on the shell 5, and the self-cleaning of the filter is realized; when the middle wall shell 4 and the outer wall shell 5 rotate simultaneously, the separated impurities are discharged out of the filter in time while the impurity separation effect is enhanced, and the normal and efficient operation of the filter is ensured.
The working process of the air filter of the fuel cell vehicle for the extremely cold environment is as follows:
as shown in fig. 4 and 5, the air containing various impurities enters from the air inlet channel, enters into the space between the middle wall shell 4 and the inner wall shell 3 at the opening of the inner wall shell 3, and the air in the space is guided by the spiral ridge 14 to flow downwards spirally, at this time, large-diameter impurities, ice crystals and liquid drops in the air are thrown out by the centrifugal force and fall along the cylinder wall, and finally fall onto the inner side of the bottom surface of the outer wall shell 5. Air below the spiral channel is sucked into the inner wall shell 3 upwards under the action of the air compressor, the air flow direction is sharply deflected from lower to upper in the process, and the deflection process also plays a role in realizing inertial separation of various impurities in the air. The air entering the inner wall housing 3 has three selectable flow directions, the specific flow direction depends on the air humidity at the moment, and the air humidity is collected by the humidity sensor 20 and transmitted to the controller.
When the air is not humid (the relative humidity of the air is less than 50%), the controller controls the servo motor 1 to drive the lifting rod 2 to completely descend (fig. 3(c)), so that the horizontal partition plate 11 is separated from the water absorbing material partition cylinder 12 downwards, the air enters the inner wall channel of the partition cylinder 12 through the gap between the horizontal partition plate 11 and the water absorbing material partition cylinder 12, flows upwards without obstruction, is filtered by the harmful gas adsorption material 15, and then flows out of the air outflow channel in the inner wall shell 3 to enter the fuel cell air compressor.
When the air is relatively humid (the relative humidity of the air is 50% -80%), the rotor coil 8 on the outer wall shell 5 is electrified, the outer wall shell 5 rotates, the controller controls the servo motor 1 to drive the lifting rod 2 to moderately rise, at the moment, the horizontal partition plate 11 blocks the inner wall channel of the water absorbing material partition cylinder 12, but the annular partition cylinder 19 does not completely block the long through hole 16, the relatively humid air only passes through a part of the water absorbing material 13, impurities with small particle sizes, ice crystals and liquid drops are absorbed, the air enters the inner wall channel of the water absorbing material partition cylinder 12 through the long through hole 16, enters the harmful gas adsorbing material 15 upwards without obstruction, and then flows out of the filter, so that the unnecessary resistance generated by the insufficient utilization of the water absorbing material 13 and the air flowing in the water absorbing material 13 is avoided, and the air dehumidification efficiency is improved.
When the air pole is moist (the relative humidity of air is greater than 80%), the rotor coils 8 on the middle wall shell 4 and the outer wall shell 5 are both electrified, the middle wall shell 4 and the outer wall shell 5 rotate simultaneously, the controller controls the servo motor 1 to drive the lifting rod 2 to completely lift (fig. 3(a)), then the horizontal partition plate 11 rises to block the inner wall channel of the water absorbing material partition cylinder 12, and meanwhile the annular partition cylinder 19 also rises to completely block the long through hole 16. The moisture air blocked by the multiple directions can only pass through the water absorbing material 13 completely, impurities with small particle sizes, ice crystals and liquid drops are absorbed, and then the dry air flows out of the air outflow channel in the inner wall shell 3 after being filtered by the harmful gas adsorbing material 15 and enters the fuel cell air compressor.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, as will be appreciated by those skilled in the art, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments.
Claims (10)
1. The fuel cell vehicle air filter for the extremely cold environment is characterized by comprising an inner wall shell (3), a middle wall shell (4) and an outer wall shell (5) which are coaxial and cylindrical from inside to outside in sequence, wherein the outer side of the upper part of the inner wall shell (3) is rotatably connected with the middle wall shell (4) and the outer wall shell (5), and a double-rotor disc type motor is arranged between the middle wall shell (4) and the outer wall shell (5); a bent inner wall partition plate (22) is arranged inside the inner wall shell (3), and an opening is formed at the joint of the inner wall shell (3) and the inner wall partition plate (22); the inner wall partition plate (22) is provided with a lifting rod (2), the bottom end of the lifting rod (2) is sequentially provided with an annular partition cylinder (19) and a horizontal partition plate (11), the bottom of the horizontal partition plate (11) is provided with a humidity sensor (20), the outer wall of the annular partition cylinder (19) is tightly attached to a water absorbing material partition cylinder (12), the water absorbing material partition cylinder (12) is fixedly connected with the inner wall shell (3), and a gap is arranged at the fixedly connected position; the upper end of the water absorption material separating cylinder (12) is provided with a long through hole (16); and a water absorbing material (13) is filled between the water absorbing material separating cylinder (12) and the inner wall shell (3), and a harmful gas adsorbing material (15) is filled between the inner wall shell (3) and the inner wall separating plate (22).
2. The fuel cell vehicle air cleaner for extremely cold environments as set forth in claim 1, wherein a spiral ridge (14) is formed on an inner wall of the middle wall case (4).
3. The fuel cell vehicle air cleaner for extremely cold environments as claimed in claim 1 or 2, wherein the outer wall of the middle wall case (4) is affixed with a resistive wire heating assembly (6).
4. The air cleaner for the fuel cell vehicle in the extremely cold environment according to claim 1, wherein the top end of the lift lever (2) is connected to a servo motor (1), and the servo motor (1) is controlled by a controller.
5. The fuel cell vehicle air cleaner for extremely cold environments as claimed in claim 1, wherein the inner side of the bottom of the outer wall case (5) is provided with a lobe (17), and the bottom of the outer wall case (5) is further provided with a gap.
6. An air filtering method of an air filter of a fuel cell vehicle according to any one of claims 1-2 and 4-5, characterized in that air containing various impurities enters the spiral passage at the opening of the inner wall case (3), and separated air enters the inner wall case (3), enters different flow directions according to the humidity of the air, and finally flows out of the filter device.
7. The air cleaner method of claim 6, wherein the air humidity comprises no humidity, more humidity, and extremely humidity.
8. An air cleaner method according to claim 7, wherein when the air is not moist, the air passes through the harmful gas adsorbent material (15) via the inner wall of the moisture absorbent material separating cartridge (12) and flows out of the cleaner device.
9. An air cleaner method according to claim 7, wherein when the air is relatively humid, the air passes through a portion of the water-absorbent material (13), enters the passage of the inner wall of the water-absorbent material cartridge (12) through the elongated through-holes (16), passes through the harmful gas adsorbent material (15), and exits the cleaner device.
10. An air cleaner method according to claim 7, wherein when the air is extremely humid, the air passes entirely through the water absorbent material (13), passes through the noxious gas absorbent material (15), and exits the cleaner device.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010036407.5A CN111173779B (en) | 2020-01-14 | 2020-01-14 | Fuel cell vehicle air filter for extremely cold environment and air filtering method |
| CH01524/20A CH717534B1 (en) | 2020-01-14 | 2020-03-13 | Air filter device of fuel cell vehicle for extremely cold environment and air filter method thereof. |
| PCT/CN2020/079246 WO2021142909A1 (en) | 2020-01-14 | 2020-03-13 | Air filter device for fuel cell vehicle in extremely cold environment and air filtration method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010036407.5A CN111173779B (en) | 2020-01-14 | 2020-01-14 | Fuel cell vehicle air filter for extremely cold environment and air filtering method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111173779A CN111173779A (en) | 2020-05-19 |
| CN111173779B true CN111173779B (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010036407.5A Active CN111173779B (en) | 2020-01-14 | 2020-01-14 | Fuel cell vehicle air filter for extremely cold environment and air filtering method |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN111173779B (en) |
| CH (1) | CH717534B1 (en) |
| WO (1) | WO2021142909A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11618583B2 (en) * | 2020-06-19 | 2023-04-04 | Pall Corporation | Aircraft fuel ice capturing filter housing, aircraft fuel ice capturing filter device, and method of use |
| CN112246018B (en) * | 2020-07-23 | 2022-11-18 | 池州市金能供热有限公司 | Battery car tail gas processor |
| CN114887414B (en) * | 2022-06-13 | 2023-12-29 | 常熟市飞奥压力容器制造有限公司 | Anti-ice blocking gas filter |
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- 2020-01-14 CN CN202010036407.5A patent/CN111173779B/en active Active
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- 2020-03-13 CH CH01524/20A patent/CH717534B1/en not_active IP Right Cessation
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Also Published As
| Publication number | Publication date |
|---|---|
| CH717534B1 (en) | 2022-06-30 |
| CN111173779A (en) | 2020-05-19 |
| WO2021142909A1 (en) | 2021-07-22 |
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