Title:
POSITIVE/NEGATIVE PRESSURE SWITCHING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2023/042538
Kind Code:
A1
Abstract:
A positive/negative pressure switching circuit (10) is provided with: a first solenoid valve (14) capable of being switched between a position in which a discharge opening (122) of a compressor (12) is open to the atmosphere, and a position in which the discharge opening of the compressor can be connected to a positive pressure output port (30); and a second solenoid valve (16) capable of being switched between a position in which a suction inlet opening (121) of the compressor is connected to a negative pressure output port (32), and a position in which the suction inlet opening of the compressor is open to the atmosphere.
Inventors:
OTANI ATSUSHI (JP)
Application Number:
PCT/JP2022/027813
Publication Date:
March 23, 2023
Filing Date:
July 15, 2022
Export Citation:
Assignee:
SMC CORP (JP)
International Classes:
F04B41/00; B25J15/06; F04B41/02
Foreign References:
| CN202176499U | 2012-03-28 | |||
| CN2718262Y | 2005-08-17 | |||
| JP2004009253A | 2004-01-15 |
Attorney, Agent or Firm:
CHIBA Yoshihiro et al. (JP)
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