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Side-channel compressor for a fuel cell system for conveying and/or compressing a gaseous medium

A fuel cell system, gaseous medium technology, applied in fuel cells, components of pumping devices for elastic fluids, liquid fuel engines, etc., can solve problems such as increasing operating costs, high energy consumption of driving devices, etc. effect of probability

Pending Publication Date: 2021-07-23
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using a compressor wheel made of cast material, a correspondingly high energy consumption of the drive, in particular in the form of electrical energy, is required due to the quality of the cast material, which in turn leads to increased operating costs for the side channel compressor

Method used

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  • Side-channel compressor for a fuel cell system for conveying and/or compressing a gaseous medium
  • Side-channel compressor for a fuel cell system for conveying and/or compressing a gaseous medium
  • Side-channel compressor for a fuel cell system for conveying and/or compressing a gaseous medium

Examples

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Embodiment Construction

[0024] from according to figure 1 The illustration in FIG. 1 results in a schematic sectional view of a side channel compressor 1 according to the invention and a compressor wheel 2 according to the invention according to a first embodiment.

[0025] In this case, the side-channel compressor 1 has a compressor wheel 2 which is mounted rotatably about a horizontally extending axis of rotation 4 in a housing 3 . In this case, a drive 6 , in particular an electric drive 6 , serves as a rotary drive 6 for the compressor wheel 2 , and a torque and / or a rotary movement is transmitted from the drive 6 to the compressor wheel 2 at least indirectly via a drive shaft 9 . Here, according to a first exemplary embodiment, the compressor wheel 2 is constructed in multiple parts and has a first wheel shell 10 and a second wheel shell 12 , wherein they are arranged axially next to each other, in particular with respect to the axis of rotation 4 , and A gap 52 radially surrounding the axis of...

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Abstract

The invention relates to a side-channel compressor (1) for a fuel cell system (37) for conveying and / or compressing a gaseous medium, in particular hydrogen, comprising a housing (3); a compressor chamber (30) which is situated in the housing (3) and which has at least one encircling side channel (19, 21); a compressor impeller (2) which is situated in the housing (3) and which is arranged so as to be rotatable about a rotational axis (4), wherein the compressor impeller (2) has conveying cells (5) arranged on the impeller circumference in the region of the compressor chamber (30); and in each case one gas inlet opening (14) formed on the housing (3) and one gas outlet opening (16), which are fluidically connected together via the compressor chamber (30), in particular the at least one side channel (19, 21). The housing (3) has a respective first and second end face (32, 34) radially to the rotational axis (4), each end face facing the compressor impeller (2), and a first and second functionally relevant gap dimension (36, 38) is formed in the region of each gap surface. According to the invention, the compressor impeller (2) is designed in multiple parts and has a first impeller shell (10) and a second impeller shell (12). The impeller shells (10, 12) are arranged adjacently to each other axially to the rotational axis (4) in particular, and each impeller shell is at least partly made of a plastic.

Description

technical field [0001] The invention relates to a side-channel compressor for conveying and / or compressing a gaseous medium, in particular hydrogen, for a fuel cell system, in particular intended for use in a vehicle with a fuel cell drive . Background technique [0002] In the field of vehicles, besides liquid fuels, gaseous fuels will also become more and more important in the future. Especially in vehicles with a fuel cell drive, the hydrogen flow must be controlled. In this case, the gas flow is no longer controlled discontinuously as in the case of liquid fuel injection, but the gaseous medium is taken from at least one high-pressure tank and directed via the inflow line of the medium-pressure line system to the injector unit. The injector unit directs the gas to the fuel cell via the connecting lines of the low-pressure line system. After the gaseous medium has flowed through the fuel cell, it is led back to the injector unit via a return line. In this case, a side...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D23/00F04D29/02F04D29/26F04D29/28
CPCF04D23/008F04D29/023F04D29/284F04D29/266F05D2300/43Y02E60/50F05D2210/12F04D17/10F04D29/4206H01M8/04111
Inventor M·库尔茨
Owner ROBERT BOSCH GMBH
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