Vacuum valve and vacuum pump

Patent metadata

Field	Value
Publication number	US-10400775-B2
Application number	US-201815863895-A
Country	US
Kind code	B2
Filing date	Jan 6, 2018
Priority date	Jan 12, 2017
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

A vacuum valve attached to a vacuum pump configured to generate regenerative power to perform a stop operation upon blackout, comprises: a first power input section to which power is input from a commercial power source; a second power input section to which the regenerative power generated at the vacuum pump is input; and a valve source circuit to which the power input to each of the first and second power input sections is supplied. When the power from the commercial power source is supplied to the first power input section, the vacuum valve is operated by the supplied power, and when the power from the commercial power source is stopped, the vacuum valve is operated by the regenerative power.

First claim

What is claimed is:

1. A vacuum valve attached to a vacuum pump configured to generate regenerative power to perform a stop operation upon blackout, comprising:
a first power input section to which power is input from a commercial power source;
a second power input section to which the regenerative power generated at the vacuum pump is input; and
a valve source circuit to which the power input to each of the first and second power input sections is supplied,
wherein when the power from the commercial power source is supplied to the first power input section, the vacuum valve is operated by the supplied power, and
when the power from the commercial power source is stopped, the vacuum valve is operated by the regenerative power, and
the vacuum valve further comprising:
a backflow prevention circuit configured to
prevent the power input from the first power input section from flowing back to the second power input section, and
prevent the power input from the second power input section from flowing back to the first power input section.

2. A vacuum valve attached to a vacuum pump configured to generate regenerative power to perform a stop operation upon blackout, comprising:
a first power input section to which power is input from a commercial power source;
a second power input section to which the regenerative power generated at the vacuum pump is input; and
a valve source circuit to which the power input to each of the first and second power input sections is supplied,
when the power from the commercial power source is supplied to the first power input section, the vacuum valve is operated by the supplied power, and
when the power from the commercial power source is stopped, the vacuum valve is operated by the regenerative power and
in operation using the regenerative power, the vacuum valve is operated with a lower power than that in operation using the power from the commercial power source.

3. A vacuum valve attached to a vacuum pump configured to generate regenerative power to perform a stop operation upon blackout, comprising:
a first power input section to which power is input from a commercial power source;
a second power input section to which the regenerative power generated at the vacuum pump is input; and
a valve source circuit to which the power input to each of the first and second power input sections is supplied,
wherein when the power from the commercial power source is supplied to the first power input section, the vacuum valve is operated by the supplied power, and
when the power from the commercial power source is stopped, the vacuum valve is operated by the regenerative power and
the vacuum valve further comprising:
a conversion section configured to convert a voltage of the regenerative power into an input voltage for the valve source circuit.

4. A vacuum pump attached to the vacuum valve according to claim 1 , comprising:
a regenerative power generation section configured to convert, upon blackout, rotation energy of a rotor body provided with a pump rotor into power, thereby generating regenerative power; and
a conversion section configured to convert a voltage of the regenerative power into an input voltage for the valve source circuit, thereby supplying the input voltage to the second power input section of the vacuum valve.

5. A vacuum pump attached to the vacuum valve according to claim 3 , comprising:
a regenerative power generation section configured to convert, upon blackout, rotation energy of a rotor body provided with a pump rotor into power, thereby generating regenerative power; and
a supply section configured to supply the regenerative power to the second power input section of the vacuum valve.

6. A vacuum pump attached to the vacuum valve according to claim 2 , comprising:
a regenerative power generation section configured to convert, upon blackout, rotation energy of a rotor body provided with a pump rotor into power, thereby generating regenerative power; and
a conversion section configured to convert a voltage of the regenerative power into an input voltage for the valve source circuit, thereby supplying the input voltage to the second power input section of the vacuum valve.

Assignees

• Shimadzu Corp

Inventors

• Nakamura Masaya
• Kozaki Junichiro
• Nakatani Atsuo
• Hirata Nobuyuki

Classifications

• H10P72/0402

  Apparatus for fluid treatment (H10P72/0441, H10P72/0448 take precedence) · CPC title

• F04D29/403

  especially adapted for elastic fluid pumps · CPC title

• F16K3/06

  in the form of closure plates arranged between supply and discharge passages (F16K3/10 takes precedence) · CPC title

• F04D19/042 Primary

  Turbomolecular vacuum pumps · CPC title

• F16K51/02

  specially adapted for high-vacuum installations · CPC title