Title:
PRESSURE SWITCH AND HERMETIC ELECTRIC COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2023/276355
Kind Code:
A1
Abstract:
This pressure switch comprises: a pressure-resistant container; a contact mechanism; at least one airtight terminal; a diaphragm that operates at a first operating pressure and is able to return at a return pressure lower than the first operating pressure; a first pressing member that presses the contact mechanism due to the operation of the diaphragm and switches the contact mechanism to an open state; a pressure-receiving deformation member that deforms and operates at a second operating pressure higher than the first operating pressure, and that does not return even when the pressure decreases to atmospheric pressure after the operation at the second operating pressure; and a second pressing member that presses the contact mechanism due to the operation of the pressure-receiving deformation member and switches the contact mechanism to the open state. The first pressing member and the second pressing member are configured from an inorganic material and do not include organic material.
Inventors:
MURATA HIROSHI (JP)
OKUMURA HIDEKI (JP)
OKUMURA TAKEHIKO (JP)
OKUMURA HIDEKI (JP)
OKUMURA TAKEHIKO (JP)
Application Number:
PCT/JP2022/014479
Publication Date:
January 05, 2023
Filing Date:
March 25, 2022
Export Citation:
Assignee:
UBUKATA IND CO LTD (JP)
International Classes:
F04B39/00; H01H35/34
Domestic Patent References:
| WO2018150458A1 | 2018-08-23 | |||
| WO2018150458A1 | 2018-08-23 |
Foreign References:
| JP2002260505A | 2002-09-13 | |||
| JP2005209438A | 2005-08-04 | |||
| JP2000057916A | 2000-02-25 |
Attorney, Agent or Firm:
SATO INTERNATIONAL PATENT FIRM (JP)
Download PDF:
Previous Patent: WORK MACHINE
Next Patent: SUPPLIED AMOUNT OF HEAT ESTIMATION METHOD, SUPPLIED AMOUNT OF HEAT ESTIMATION DEVICE, SUPPLIED AMOUN...
Next Patent: SUPPLIED AMOUNT OF HEAT ESTIMATION METHOD, SUPPLIED AMOUNT OF HEAT ESTIMATION DEVICE, SUPPLIED AMOUN...