Stator blade unit for a turbomolecular pump
US-2020040910-A1 · Feb 6, 2020 · US
Blower
US2022213903A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022213903-A1 |
| Application number | US-202217568897-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 5, 2022 |
| Priority date | Jan 6, 2021 |
| Publication date | Jul 7, 2022 |
| Grant date | — |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
A blower may include a fan, a casing including a discharge port and housing the fan, and a nozzle attachable to the discharge port. The nozzle may include a nozzle tube in which air flows, and a plate member disposed within the nozzle tube. A rear end surface of the plate member may be inclined to a flow direction in which air flows within the nozzle tube.
First claim
Opening claim text (preview).
What is claimed is: 1 . A blower comprising: a fan; a casing including a discharge port and housing the fan; and a nozzle attachable to the discharge port, wherein the nozzle comprises: a nozzle tube in which air flows; and a plate member disposed within the nozzle tube, and a rear end surface of the plate member is inclined to a flow direction in which air flows within the nozzle tube. 2 . The blower according to claim 1 , wherein with respect to a radial direction of the nozzle tube, an upstream end of the rear end surface of the plate member in the flow direction is positioned radially inward of a downstream end of the rear end surface of the plate member in the flow direction. 3 . The blower according to claim 1 , wherein with respect to a radial direction of the nozzle tube a downstream end of the rear end surface of the plate member in the flow direction is positioned radially inward of an upstream end of the rear end surface of the plate member in the flow direction. 4 . The blower according to claim 1 , wherein the rear end surface of the plate member is inclined to the flow direction at an angle in a range from 30 degrees to 85 degrees. 5 . The blower according to claim 1 , wherein the plate member includes a slit penetrating the plate member in the flow direction. 6 . The blower according to claim 1 , wherein the plate member includes a notch. 7 . The blower according to claim 1 , wherein the plate member occludes a dimple. 8 . The blower according to claim 1 , wherein the plate member includes a portion where a surface roughness of the portion is equal to or more than 0.1. 9 . The blower according to claim 1 , wherein a width of the plate member in the flow direction is equal to or more than 10% of an inner diameter of the nozzle tube. 10 . The blower according to claim 1 , wherein as the nozzle is viewed in the flow direction, a thickness of the plate member is in a range from 1% to 8% of an inner diameter of the nozzle tube. 11 . A blower comprising: a fan; a casing including a discharge port and housing the fan; and a nozzle attachable to the discharge port, wherein the nozzle comprises: a nozzle tube in which air flows; and a plate member disposed within the nozzle tube, and the plate member includes a slit penetrating the plate member in a flow direction in which air flows within the nozzle tube. 12 . The blower according to claim 11 , wherein the plate member includes a notch. 13 . The blower according to claim 11 , wherein the plate member includes a dimple. 14 . The blower according to claim 11 , wherein the plate member includes a portion where a surface roughness of the portion is equal to or more than 0.1. 15 . The blower according to claim 11 , wherein a width of the plate member in the flow direction is equal to or more than 10% of an inner diameter of the nozzle tube. 16 . The blower according to claim 11 , wherein as the nozzle is viewed in the flow direction, a thickness of the plate member is in a range from 1% to 8% of an inner diameter of the nozzle tube.
Assignees
Inventors
Classifications
by influencing the flow pattern, e.g. suppression of turbulence · CPC title
Ducts · CPC title
Blade shapes · CPC title
Specially adapted for elastic fluid pumps (F04D29/56 takes precedence) · CPC title
Bladed diffusers · CPC title
Patent family
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2022213903A1 cover?
- A blower may include a fan, a casing including a discharge port and housing the fan, and a nozzle attachable to the discharge port. The nozzle may include a nozzle tube in which air flows, and a plate member disposed within the nozzle tube. A rear end surface of the plate member may be inclined to a flow direction in which air flows within the nozzle tube.
- Who is the assignee on this patent?
- Makita Corp
- What technology area does this patent fall under?
- Primary CPC classification F04D29/4206. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Jul 07 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).