Matsushita Refrigeration Company

Panasonic Corporation

Panasonic Appliances Refrigeration Devices Singapore

Panasonic Intellectual Property Management Co., Ltd.

Hironari Akashi

Kosuke Tsuboi

Takao Yoshimura

Hirotaka Kawabata

Akihiko Kubota

Kazuhiro Yokota

Ichiro Kita

Junichiro Yabiki

Takashi Koyama

Makoto Katayama

Takeshi Kojima

Takashi Kakiuchi

Kiwamu Watanabe

Masao Mangyo

Takeshi Ohno

Koh Inagaki

Terumasa Ide

Takahide Nagao

Akio Yagi

Akira Hayashi

Kousuke Tsuboi

Hidenori Kobayashi

Yasushi Hayashi

A sealed refrigerant compressor (A) accommodates an electric component (A) and a compression component () in a sealed container (). A crankshaft () included in the compression component () includes a main shaft part () and an eccentric shaft part (). A main shaft part () is secured to a rotor (A) of the electric component (A). The rotor (A) is provided with a balance adjustment means such as a balance hole (), which adjusts an unbalanced load caused by the structure of the main shaft part ().

Sealed refrigerant compressor and refrigeration device

A sealed compressor comprises a sealed container () which accommodates an electric component () and a compression component (); wherein the compression component () includes a shaft () including a main shaft section () and an eccentric shaft section (), a cylinder block (), a piston (), and a main bearing unit () mounted to the cylinder block () and supporting the main shaft section () such that the main shaft section () is rotatable, a thrust ball bearing () mounted to a thrust surface () of the main bearing unit (); and the thrust ball bearing () includes a plurality of balls () held in a cage (), an upper race () having main surfaces one of which is in contact with upper portions of the balls (); and a lower race () having main surfaces one of which is in contact with lower portions of the balls () and; a restricting means for restricting a displacement of the upper race () with respect to the shaft ().

Sealed compressor and refrigeration unit comprising sealed compressor

The present invention provides a refrigerant compressor which may assure excellent reliability while using low-viscosity refrigerant. The refrigerant compressor is characterized in that the viscosity of oil stored in hermetic container ranges from VG3 to VG8, and the boiling component at 350&#xb0; C. or over is not less than 10% and not higher than 30% in volume ratio, and the boiling component at 300&#xb0; C. or less is not less than 50% and not higher than 70% in volume ratio. Accordingly, the input reduction at sliding surfaces can be realized, and the lubricant is evaporated, therefore it is possible to prevent defective compression caused by PET (polyethylene phthalate) or the like deposited on the surfaces of the discharge reed and the like, and to enhance the efficiency and reliability.

Refrigerant compressor

A hermetic compressor has a bipolar permanent magnet motor where permanent magnet is disposed in rotor core. A hollow bore is disposed at the end on the compressing element side of the rotor core, and main bearing extends into the bore. The thickness of the rotor core is longer than that of the stator core, thereby widening the magnetic path of the rotor core. The magnetic flux amount generated in the rotor core, which is conventionally insufficient due to existence of the bore, increases, the loss decreases, and the efficiency increases.

Hermetic compressor

A hermetic-type compressor according to the present invention has a viscous pump part by combining a spiral groove formed on the outer periphery of a main shaft with the inner periphery of a main shaft bearing, and at least one sliding section being in a sliding engagement with the main shaft bearing and at least one non-contact sliding-section having a predetermined gap with the main shaft bearing are formed on the face at the outer periphery of the main shaft opposing to the main shaft bearing where the lower end of the groove is located at the non-contact sliding-section.

Hermetic-type compressor

A refrigerant compressor includes a compressor section, driver, a first contact section and a second contact section. The compressor section is accommodated in a closed container for compressing refrigerant gas. The driver drives the compressor section. The first and second contact sections are brought into contact with each other or they slide with each other by driving the compressor section. On the surface of each one of the contact sections, at least one of plural recesses uniformly placed or a mixed layer, to which molybdenum disulfide (MoS) is bound, is formed. The foregoing structure allows increasing the abrasion resistance of the first and second contact sections.

Refrigerant compressor, and refrigerating machine using the same

A compressor equipped with a compressing unit comprising a compressing section and a motor section which are connected to each other and Which are encased in a closed vessel, the compressing section including a crank shaft rotatable so that a piston reciprocates within a cylinder and the motor section comprising a rotor and stator and disposed at a lower side of the compressing section, the rotor being connected to the crank shaft so that the crank shaft is rotatable in response to driving of the motor section. Springs are provided between the compressing unit and the closed vessel so as to elastically support the compressing section and the motor section, and first and second balance weights are respectively provided on upper and lower portions of a rotor of the motor section. The first and second balance weights are determined on the basis of the resultant load to be applied to an eccentric portion of the crank shaft, a con'rod and the piston, the loads of the first and second balance weights and distances among the first and second balance weights and the eccentric portion of the crank shaft.

A hermetic compressor includes a sealed casing which accommodates therein a compressing unit for compressing a refrigerant and a driving unit for driving the compressing unit. An induction pipe is provided in the sealed casing for introducing the refrigerant into the compressing unit. The induction pipe has an outlet end communicating with the interior of the compressing unit and an inlet end which is opened to space in the sealed casing at a position corresponding to a node of a standing wave of the refrigerant in the sealed casing.

Growing community of inventors

Kanagawa, Japan

Hironari Akashi