Throttle valve

Patent metadata

Field	Value
Publication number	US-9958073-B2
Application number	US-201615184456-A
Country	US
Kind code	B2
Filing date	Jun 16, 2016
Priority date	Jun 16, 2016
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

A throttle valve is provided. The throttle valve includes a throttle valve body, a valve plug, a hollow seal and a first scraper. A flow path is formed in the throttle valve body. The valve plug is disposed in the throttle valve body. A notch is formed on the valve plug. By rotating the valve plug, the position of the notch is changed, and the degree of opening of the flow path is modified. The hollow seal is disposed in the throttle valve body. An abutting portion is formed on the hollow seal, and the abutting portion sealably abuts the valve plug. The first scraper is disposed on the valve plug. When the valve plug is rotated, the first scraper abuts the abutting portion to clean the abutting portion.

First claim

What is claimed is:

1. A throttle valve, comprising:
a throttle valve body, wherein a flow path is formed in the throttle valve body;
a valve plug, disposed in the throttle valve body, wherein a notch is formed on the valve plug, and by rotating the valve plug, a position of the notch is changed, and a degree of opening of the flow path is modified
a hollow seal, disposed in the throttle valve body, wherein an abutting portion is formed on the hollow seal, and the abutting portion sealably abuts the valve plug; and
a first scraper, disposed on the valve plug, wherein when the valve plug is rotated, the first scraper abuts the abutting portion to clean the abutting portion, wherein the first scraper is suspended above and across the notch.

2. The throttle valve as claimed in claim 1 , wherein an included angle between the first scraper and a central plane of symmetry of the valve plug is 45 degrees.

3. The throttle valve as claimed in claim 1 , further comprising a second scraper, wherein the second scraper is suspended above and across the notch, and the first scraper is symmetric to the second scraper relative of the central plane of symmetry.

4. The throttle valve as claimed in claim 3 , wherein an included angle between the first scraper and the central plane of symmetry of the valve plug is 45 degrees, and an included angle between the second scraper and the central plane of symmetry of the valve plug is −45 degrees.

5. The throttle valve as claimed in claim 1 , wherein the first scraper is a straight metal wire.

6. The throttle valve as claimed in claim 5 , wherein two ends of the first scraper are embedded to the valve plug, and are respectively located on two opposite sides of the notch.

7. The throttle valve as claimed in claim 6 , wherein the first scraper extends parallel to a central axis of the valve plug.

8. The throttle valve as claimed in claim 1 , wherein the throttle valve body comprises an inlet and an outlet, the inlet and the outlet are located on a straight line, and the hollow seal is located between outlet and the valve plug.

9. The throttle valve as claimed in claim 1 , wherein the throttle valve body comprises a body inner wall, and when the plug valve is rotated, the first scraper contacts the body inner wall and cleans the body inner wall.

Assignees

• Vanguard Int Semiconduct Corp

Inventors

• Yang Reunn-Chang

Classifications

• F16K5/0464

  in the housing · CPC title

• F16K5/08 Primary

  Details · CPC title

• F16K5/0407 Primary

  with particular plug arrangements, e.g. particular shape or built-in means · CPC title

• F16K5/18

  for plugs with cylindrical surfaces · CPC title

• F16K27/065

  with cylindrical plugs · CPC title