Ejector, ejector production method, and method for setting diffuser outlet flow path
AssigneeTLV Co., Ltd.
InventorFumihiro KAWASHIMA
Life of this patent
Estimating the term…
Abstract
An ejector includes a nozzle, a suction chamber, and a diffuser. A diffuser further includes an attachment configured to change the dimensions of the outlet flow path. The attachment changes the length X of a narrowed flow path and the length Y and the inner diameter D of a parallel flow path such that expressions (1) and (2) are satisfied: X=A×D (1), and Y=B×D (2).
Claims5
An ejector comprising:
- a nozzle configured to eject first fluid;
- a suction chamber configured to house the nozzle and to suck second fluid by negative pressure generated by ejection of the first fluid from the nozzle;
- and
- a diffuser including an outlet flow path and configured to mix and discharge the first fluid and the second fluid of the suction chamber,
- wherein the outlet flow path includes a narrowed flow path having a sectional area narrowed toward downstream, a parallel flow path connected to a downstream end of the narrowed flow path and having a constant sectional area, and an expanded flow path connected to a downstream end of the parallel flow path and having a sectional area expanded toward downstream,
- the diffuser further includes a changing unit configured to change a dimension of the outlet flow path, and
- the changing unit changes a length X of the narrowed flow path and a length Y and an inner diameter D of the parallel flow path such that expressions (1) and (2) represented using constants A, B are satisfied:
- X=A×D (1),
- and
- Y=B×D (2).
A method for manufacturing an ejector including a nozzle configured to eject first fluid, a suction chamber configured to house the nozzle and to suck second fluid by negative pressure generated by ejection of the first fluid from the nozzle, and a diffuser including an outlet flow path having a narrowed flow path having a sectional area narrowed toward downstream, a parallel flow path connected to a downstream end of the narrowed flow path and having a constant sectional area, and an expanded flow path connected to a downstream end of the parallel flow path and having a sectional area expanded toward downstream and configured to mix and discharge the first fluid and the second fluid of the suction chamber, comprising:
- a setting step of setting a dimension of the outlet flow path;
- and
- a preparation step of preparing the diffuser having the dimension of the outlet flow path set at the setting step,
- wherein at the setting step, a length X of the narrowed flow path and a length Y and an inner diameter D of the parallel flow path are set to satisfy expressions (1) and (2) represented using constants A, B:
- X=A×D (1),
- and
- Y=B×D (2).
A method for setting an outlet flow path of a diffuser including an outlet flow path having a narrowed flow path having a sectional area narrowed toward downstream, a parallel flow path connected to a downstream end of the narrowed flow path and having a constant sectional area, and an expanded flow path connected to a downstream end of the parallel flow path and having a sectional area expanded toward downstream and used for an ejector, comprising:
- a step of setting a length X of the narrowed flow path such that an expression (1) represented using an inner diameter D of the parallel flow path and a constant A is satisfied;
- and
- a step of setting a length Y of the parallel flow path such that an expression (2) represented using the inner diameter D and a constant B is satisfied:
- X=A×D (1),
- and
- Y=B×D (2).
Dependencies are inferred from the claim text.