CENTRIFUGAL COMPRESSOR

To provide a centrifugal compressor capable of achieving both reduction in moment of inertia of an impeller and a thrust load acting on the impeller, and suppression in reduction in a pressure ratio.SOLUTION: A centrifugal compressor 1 comprises a rotational shaft, an impeller, and a casing. The imp...

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Bibliographic Details
Main Authors NAKANE YOSHIYUKI, UMEYAMA AKIRA
Format Patent
LanguageEnglish
Japanese
Published 01.02.2022
Subjects
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:To provide a centrifugal compressor capable of achieving both reduction in moment of inertia of an impeller and a thrust load acting on the impeller, and suppression in reduction in a pressure ratio.SOLUTION: A centrifugal compressor 1 comprises a rotational shaft, an impeller, and a casing. The impeller has a hub 110 and a plurality of blades 120. The casing has an opposite surface 442 facing a back surface 118 of the hub 110, and a protrusion part 444 protruding from the opposite surface 442 toward the impeller. The hub 110 is formed with an accommodation space 110S for accommodating the protrusion part 444. The accommodation space 110S is provided with a through hole penetrating the hub 110 from the back surface 118 toward an outer peripheral surface 112. The through hole is opened so as to avoid the blade 120.SELECTED DRAWING: Figure 4 【課題】インペラの慣性モーメント及びインペラに作用するスラスト荷重の低減と、圧力比の低下の抑制と、の双方を達成可能な遠心圧縮機を提供すること。【解決手段】遠心圧縮機１は、回転軸と、インペラと、ケーシングと、を備える。インペラは、ハブ１１０と、複数のブレード１２０と、を有する。ケーシングは、ハブ１１０の背面１１８と対向する対向面４４２と、対向面４４２からインペラに向かって突出する突出部４４４と、を有する。ハブ１１０には、突出部４４４を収容する収容空間１１０Ｓが形成されている。収容空間１１０Ｓは、背面１１８から外周面１１２に向けてハブ１１０を貫通する貫通孔を備える。貫通孔は、ブレード１２０を避けて開口する。【選択図】図４
Bibliography:Application Number: JP20200123640