CN111536057A - Two-stage compressor of hydrogen fuel turbine range extender - Google Patents

Two-stage compressor of hydrogen fuel turbine range extender Download PDF

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Publication number
CN111536057A
CN111536057A CN202010385824.0A CN202010385824A CN111536057A CN 111536057 A CN111536057 A CN 111536057A CN 202010385824 A CN202010385824 A CN 202010385824A CN 111536057 A CN111536057 A CN 111536057A
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CN
China
Prior art keywords
stage compressor
outer shell
generator
stage
compressor impeller
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Pending
Application number
CN202010385824.0A
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Chinese (zh)
Inventor
连晋毅
冯瑞
李�杰
张喜清
智晋宁
李占龙
宋勇
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Shanxi teboyou New Energy Technology Co.,Ltd.
Taiyuan University of Science and Technology
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Taiyuan University of Science and Technology
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Priority to CN202010385824.0A priority Critical patent/CN111536057A/en
Publication of CN111536057A publication Critical patent/CN111536057A/en
Pending legal-status Critical Current

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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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F04D17/12—Multi-stage pumps
    • F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/243—Flange connections; Bolting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
    • F02C3/22—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being gaseous at standard temperature and pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
    • F04D29/286—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors multi-stage rotors
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • 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
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention belongs to the technical field of new energy electric automobiles, and particularly relates to a two-stage compressor of a hydrogen fuel turbine range extender, which comprises a first-stage compressor, a second-stage compressor, a generator, a rotating shaft, an outer shell, an inner shell and a volute, wherein the generator is arranged between the first-stage compressor and the second-stage compressor, the first-stage compressor, the second-stage compressor and the generator are coaxially connected through the rotating shaft, the inner shell is arranged inside the outer shell, the generator is arranged inside the inner shell, the outer shell comprises a left outer shell and a right outer shell, the left outer shell and the right outer shell are fixedly connected through bolts and nuts, the first-stage compressor is arranged between the left outer shell and the inner shell, and one end of the right outer shell is fixedly connected. The invention combines the two-stage compressor and the generator, the whole structure is more compact, and the two-stage compressor is used to improve the pressure ratio of air. The invention is used for the pressurization of the turbine range extender of the new energy electric automobile.

Description

Two-stage compressor of hydrogen fuel turbine range extender
Technical Field
The invention belongs to the technical field of new energy electric automobiles, and particularly relates to a two-stage compressor of a hydrogen fuel turbine range extender.
Background
The rapid development of modern industry, accompanied by the rapid consumption of non-renewable resources such as petroleum and the destruction of environment, makes it urgently necessary to find new renewable and clean energy substitutes, and especially in the field of automobiles, the development of new energy automobiles has been advanced. One of the driving modes is that renewable hydrogen is used to replace gasoline, diesel oil and the like as fuel, and the fuel reacts with oxygen in a combustion chamber to drive a generator to work, so as to charge a storage battery, and a motor is used to drive an automobile to run. The product of this process is water only and no other contaminants are present. However, due to the limitation of battery technology, the energy density of the battery is not high, and the existing turbocharger has too low efficiency in the driving process of the automobile, so that the storage battery cannot be rapidly charged anytime anywhere.
Disclosure of Invention
Aiming at the technical problem that the efficiency of the turbocharger is too low, the invention provides the two-stage compressor of the hydrogen fuel turbine range extender, which is pollution-free, high in efficiency and strong in stability.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a hydrogen fuel turbine increases journey ware two-stage compressor, includes first-stage compressor, second grade compressor, generator, pivot, shell, inner shell, spiral case, the generator sets up between first-stage compressor and second grade compressor, first-stage compressor, second grade compressor, generator pass through pivot coaxial coupling, the inner shell sets up the inside at the shell, the generator is through setting up in the inner shell, the shell includes left shell and right shell, left side shell and right shell pass through bolt, nut fixed connection, first-stage compressor sets up between left shell and inner shell, the one end fixedly connected with spiral case of right side shell, the second grade compressor sets up in the spiral case, the spiral case is connected with the hydrogen storage tank through the combustion chamber, the second grade compressor is connected with the turbine through the pivot.
The first-stage compressor comprises a first-stage compressor impeller, a first-stage compressor impeller fixing nut and a first-stage compressor impeller back, the first-stage compressor impeller is fixedly connected with the first-stage compressor impeller back, the first-stage compressor impeller and the first-stage compressor impeller back are fixedly connected to a rotating shaft through the first-stage compressor impeller fixing nut, and the first-stage compressor impeller back is arranged on one side close to the generator.
The second-stage compressor comprises a second-stage compressor impeller and a second-stage compressor impeller back, the second-stage compressor impeller is fixedly connected with the second-stage compressor impeller back, the second-stage compressor impeller and the second-stage compressor impeller back are fixedly connected to the rotating shaft, and the second-stage compressor impeller is arranged on one side close to the generator.
The generator comprises a rotor, a stator and a cooling water jacket, wherein the rotor is fixedly connected to the rotating shaft, the stator is fixedly connected with the inner shell through the cooling water jacket, and the rotor is arranged inside the stator.
The inner shell is fixedly connected with the outer shell through the guide vanes.
The generator is characterized in that rib plates are arranged on the shell, oval holes are formed in the shell, the generator is connected with a storage battery through the oval holes, and the oval long axis of each oval hole is consistent with the axis direction of the rotating shaft.
Compared with the prior art, the invention has the following beneficial effects:
the invention combines the two-stage compressor and the generator, the whole structure is more compact, the two-stage compressor is used, the pressure ratio of air is improved, the rib plate is beneficial to reducing the temperature of the air in the remaining flow passage and reducing the flow loss, meanwhile, the guide vane is beneficial to improving the uniformity of airflow and the performance of the second-stage compressor, the rotating shaft of the generator has very high rotating speed, and the charging efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an energy delivery circuit diagram of the present invention;
wherein: the device comprises a first-stage compressor, a second-stage compressor, a generator, a rotating shaft, an outer shell, an inner shell, a volute, bolts, nuts, guide vanes, storage batteries, a combustion chamber, a hydrogen storage tank, a turbine, a first-stage compressor impeller fixing nut, a first-stage compressor impeller back, a second-stage compressor impeller back, a hydrogen storage tank, a turbine, a cooling water jacket, a left outer shell, a right outer shell, ribs and elliptical holes, wherein the number of the first-stage compressor impeller fixing nuts is 1, the second-stage compressor impeller back is 10, the storage batteries are 11.
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.
A two-stage compressor of a hydrogen fuel turbine range extender is shown in figures 1 and 2 and comprises a first-stage compressor 1, a second-stage compressor 2, a generator 3, a rotating shaft 4 and a shell 5, the hydrogen storage device comprises an inner shell 6 and a volute 7, wherein a generator 3 is arranged between a first-stage compressor 1 and a second-stage compressor 2, the first-stage compressor 1, the second-stage compressor 2 and the generator 3 are coaxially connected through a rotating shaft 4, the inner shell 6 is arranged inside an outer shell 5, the generator 3 is arranged inside the inner shell 6, the outer shell 5 comprises a left outer shell 501 and a right outer shell 502, the left outer shell 501 and the right outer shell 502 are fixedly connected through bolts 8 and nuts 9, the first-stage compressor 1 is arranged between the left outer shell 501 and the inner shell 6, one end of the right outer shell 502 is fixedly connected with the volute 7, the second-stage compressor 2 is arranged inside the volute 7, the volute 7 is connected with a hydrogen storage tank 13 through a combustion chamber 12, and the second-. Air is firstly pressurized by the first-stage compressor 1, passes through a flow channel formed by the outer shell 5 and the inner shell 6, is pressurized by the second-stage compressor 2, and enters the combustion chamber 12, meanwhile, hydrogen is injected into the combustion chamber 12 from the hydrogen storage tank 13, the air and the hydrogen are combusted in the combustion chamber 12 to generate high-speed airflow to drive the turbine of the turbine 14 to rotate, the generator 3 is driven to rotate by the rotating shaft 4, and therefore the generator 3 generates electric energy.
Further, the first-stage compressor 1 comprises a first-stage compressor impeller 101, a first-stage compressor impeller fixing nut 102 and a first-stage compressor impeller back 103, the first-stage compressor impeller 101 is fixedly connected with the first-stage compressor impeller back 103, the first-stage compressor impeller 101 and the first-stage compressor impeller back 103 are fixedly connected to the rotating shaft 4 through the first-stage compressor impeller fixing nut 102, and the first-stage compressor impeller back 103 is arranged on one side close to the generator 3.
Further, the second-stage compressor 2 comprises a second-stage compressor impeller 201 and a second-stage compressor impeller back 202, the second-stage compressor impeller 201 is fixedly connected with the second-stage compressor impeller back 202, the second-stage compressor impeller 201 and the second-stage compressor impeller back 202 are fixedly connected to the rotating shaft 4, and the second-stage compressor impeller 201 is arranged on one side close to the generator 3.
Further, the generator 3 includes a rotor 301, a stator 302, and a cooling water jacket 303, the rotor 301 is fixedly connected to the rotating shaft 4, the rotor 301 is disposed inside the stator 302, the stator 302 is fixedly connected to the inner casing 6 through the cooling water jacket 303, and the cooling water cools the air flow in the flow channel by cooling the heat of the generator.
Furthermore, the inner shell 6 is fixedly connected with the outer shell 5 through the guide vanes 10, so that the air flow can be guided, and the uniformity of the air flow in the flow channel is improved.
Further, the rib plate 503 is arranged on the housing 5, so that the contact area between the housing and the air is increased, heat dissipation is facilitated, the temperature of the air flow is reduced, and the overall power is improved. The housing 5 is provided with an elliptical hole 504, the generator 3 is connected with the storage battery 11 through the elliptical hole 504, and the elliptical long axis of the elliptical hole 504 is consistent with the axial direction of the rotating shaft 4, so that airflow flowing is facilitated, and flowing loss is reduced.
The working process of the invention is as follows: air is firstly pressurized by the first-stage compressor, then passes through a flow channel formed by the outer shell and the inner shell, is pressurized by the second-stage compressor, and enters the combustion chamber, meanwhile, hydrogen is injected into the combustion chamber by the hydrogen storage tank, the air and the hydrogen are combusted in the combustion chamber to generate high-speed airflow to drive the turbine of the turbine to rotate, the rotor of the generator is driven to rotate by the rotating shaft, and the generator generates electric energy to charge the storage battery.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.

Claims (6)

1. A two-stage compressor of a hydrogen fuel turbine range extender is characterized in that: the power generation device comprises a first-stage air compressor (1), a second-stage air compressor (2), a generator (3), a rotating shaft (4), an outer shell (5), an inner shell (6) and a volute (7), wherein the generator (3) is arranged between the first-stage air compressor (1) and the second-stage air compressor (2), the first-stage air compressor (1), the second-stage air compressor (2) and the generator (3) are coaxially connected through the rotating shaft (4), the inner shell (6) is arranged inside the outer shell (5), the generator (3) is arranged in the inner shell (6), the outer shell (5) comprises a left outer shell (501) and a right outer shell (502), the left outer shell (501) and the right outer shell (502) are fixedly connected through bolts (8) and nuts (9), the first-stage air compressor (1) is arranged between the left outer shell (501) and the inner shell (6), one end of the right outer shell (502) is fixedly connected with the volute, the second-stage compressor (2) is arranged in a volute (7), the volute (7) is connected with a hydrogen storage tank (13) through a combustion chamber (12), and the second-stage compressor (2) is connected with a turbine (14) through a rotating shaft (4).
2. The two-stage compressor of the hydrogen-fueled turbo range extender of claim 1, wherein: the first-stage compressor (1) comprises a first-stage compressor impeller (101), a first-stage compressor impeller fixing nut (102) and a first-stage compressor impeller back (103), the first-stage compressor impeller (101) is fixedly connected with the first-stage compressor impeller back (103), the first-stage compressor impeller (101) and the first-stage compressor impeller back (103) are fixedly connected onto a rotating shaft (4) through the first-stage compressor impeller fixing nut (102), and the first-stage compressor impeller back (103) is arranged on one side close to a generator (3).
3. The two-stage compressor of the hydrogen-fueled turbo range extender of claim 1, wherein: the second-stage compressor (2) comprises a second-stage compressor impeller (201) and a second-stage compressor impeller back (202), the second-stage compressor impeller (201) is fixedly connected with the second-stage compressor impeller back (202), the second-stage compressor impeller (201) and the second-stage compressor impeller back (202) are fixedly connected to the rotating shaft (4), and the second-stage compressor impeller (201) is arranged on one side close to the generator (3).
4. The two-stage compressor of the hydrogen-fueled turbo range extender of claim 1, wherein: the generator (3) comprises a rotor (301), a stator (302) and a cooling water jacket (303), wherein the rotor (301) is fixedly connected to the rotating shaft (4), the stator (302) is fixedly connected with the inner shell (6) through the cooling water jacket (303), and the rotor (301) is arranged inside the stator (302).
5. The two-stage compressor of the hydrogen-fueled turbo range extender of claim 1, wherein: the inner shell (6) is fixedly connected with the outer shell (5) through guide vanes (10).
6. The two-stage compressor of the hydrogen-fueled turbo range extender of claim 1, wherein: be provided with floor (503) on shell (5), be equipped with oval hole (504) on shell (5), generator (3) are connected with battery (11) through oval hole (504), the oval major axis of oval hole (504) is unanimous with pivot (4) axis direction.
CN202010385824.0A 2020-05-09 2020-05-09 Two-stage compressor of hydrogen fuel turbine range extender Pending CN111536057A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112815454A (en) * 2021-01-05 2021-05-18 深圳市康弘环保技术有限公司 Novel high-efficient centrifugal wind wheel structure and air purifier thereof
CN113339287A (en) * 2021-05-31 2021-09-03 势加透博（北京）科技有限公司 Turbo compressor
CN113833679A (en) * 2021-09-16 2021-12-24 势加透博洁净动力如皋有限公司 Compressor capable of reducing air flow loss
CN114278589A (en) * 2022-01-05 2022-04-05 北京临近空间飞艇技术开发有限公司 Helium gas compressor

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CN107725174A (en) * 2016-05-11 2018-02-23 株式会社马勒滤清系统 Turbocharger
CN107939513A (en) * 2018-01-05 2018-04-20 太原科技大学 Electricity auxiliary disengaging type power turbine combined supercharging device
WO2019145065A1 (en) * 2018-01-25 2019-08-01 Robert Bosch Gmbh Turbomachine, in particular for a fuel cell system, fuel cell system, method for operating a turbomachine and method for operating a fuel cell system
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112815454A (en) * 2021-01-05 2021-05-18 深圳市康弘环保技术有限公司 Novel high-efficient centrifugal wind wheel structure and air purifier thereof
CN113339287A (en) * 2021-05-31 2021-09-03 势加透博（北京）科技有限公司 Turbo compressor
CN113339287B (en) * 2021-05-31 2022-06-10 势加透博（北京）科技有限公司 Turbo compressor
CN113833679A (en) * 2021-09-16 2021-12-24 势加透博洁净动力如皋有限公司 Compressor capable of reducing air flow loss
CN114278589A (en) * 2022-01-05 2022-04-05 北京临近空间飞艇技术开发有限公司 Helium gas compressor

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