Title:
ROTARY COMPRESSOR AND MANUFACTURING METHOD OF ROTARY COMPRESSOR
Document Type and Number:
Japanese Patent JP2023173317
Kind Code:
A
Abstract:
To suppress pressure loss of a refrigerant discharged from a discharge valve housed in a recessed portion formed on a bearing.SOLUTION: A rotary compression portion 6 has a piston rotor, a cylinder for housing the piston rotor, an upper bearing 4A and a lower bearing disposed in a manner of holding the cylinder therebetween and forming a compression chamber 60A housing the piston rotor, and a discharge valve 64 mounted on the upper bearing 4A, and opening and closing a discharge hole 4Aa for discharging the refrigerant compressed in the compression chamber 60A. A recessed portion 4Ad for housing the discharge valve 64 is formed on an opposite face 4Ab opposed to an electric motor, of the upper bearing 4A, a discharge hole 4Aa penetrating along a rotation axis is formed on a bottom portion 4Ad1 of the recessed portion 4Ad, and an inclination portion 4Ad2 is formed on the recessed portion 4Ad in a manner that a height from the bottom portion 4Ad1 to the opposite face 4Ab is gradually lowered in accordance with increase of a distance from the discharge hole 4Aa.SELECTED DRAWING: Figure 4
Inventors:
SHIMAYA HIROFUMI
Application Number:
JP2022085483A
Publication Date:
December 07, 2023
Filing Date:
May 25, 2022
Export Citation:
Assignee:
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD
International Classes:
F04C18/356; F04C29/12
Attorney, Agent or Firm:
Takaharu Fujita
Takaori Mitoma
Miki Kawakami
Daisuke Nagata
Takaori Mitoma
Miki Kawakami
Daisuke Nagata
Previous Patent: Linear motors, electromagnetic suspensions and washing machines
Next Patent: composite container
Next Patent: composite container