To relieve an intermittent flow of a sucked refrigerant caused by the opening and closing of a read valve at a suction hole, increase sucking efficiency, reduce noise effectively, and increase performance and efficiency in a closed type motor-driven compressor used for household refrigerators.
When a reed valve 15 is opened, a refrigerant gas is filled once into a refrigerant in/outflow branch pipe 19. When the valve is opened again, the gas inside the refrigerant in/outflow branch pipe 19 is fed to a cylinder so as to maintain and increase a flow inertia in order to increase a suction efficiency. By this, a highly efficient low noise closed type motor-driven compressor can be obtained. Also, by a sound resonance energy determined by the specifications of the branch pipe, the vibration amplitude of the reed valve 15 can be controlled so as to increase the performance and efficiency.
UMEOKA IKUTOMO
KITA ICHIRO
ODA MASATAKA
