Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Other

Panasonic Corporation

Matsushita Refrigeration Company

Hidenobu Shintaku

Takashi Morimoto

Takeshi Ogata

Shigeo Suzuki

Atsushi Sakuda

Sadayuki Yamada

Yusuke Imai

Noboru Iida

Hiroshi Hasegawa

Fumitoshi Nishiwaki

Hiroyuki Fukuhara

Mitsuhiro Ikoma

Osamu Kawasaki

Shigeru Muramatsu

Kazunori Hirao

Akira Hiwata

Yoshiyuki Futagami

Kazuo Takahashi

Hiroki Kono

Isamu Inoue

Terumaru Harada

Taku Watanabe

Hirozo Takegawa

Etsuro Suzuki

Mitsuo Asabe

Kayoko Kodama

Ryutarou Akutagawa

Yoshiro Abe

Katsu Takeda

Katsumi Imada

Kiyoshi Sawai

Masanori Sumihara

Yuji Yoshida

Teruyuki Akazawa

Hirofumi Tajika

Takahiro Nishikura

Noriho Okaza

Masahiro Nagasawa

Akihiro Hayashi

Tetsuro Otsuchi

Takashi Nojima

Hiroshi Fukushima

A scroll compressor of the present invention includes a first discharge portwhich is in communication with a compression chamber, a discharge spaceH which is in communication with the first discharge port, a second discharge portwhich brings the discharge spaceH into communication with a high pressure space, a discharge check valvecapable of closing the second discharge port, a bypass portwhich brings the compression chamberinto communication with the discharge spaceH, and a bypass check valvecapable of closing the bypass port, the fixed scrollcan move in an axial direction of the fixed scroll between the partition plateand the main bearing, a high pressure is applied to the discharge spaceH and according to this, the fixed scrollcan be pressed against the orbiting scroll

Scroll compressor having a fixed scroll pressed in an axial direction against an orbiting scroll

A scroll compressor of the present invention includes a partition plate, a fixed scroll, an orbiting scroll, a rotation-restraining member, a main bearing, a bearing-side concave portion, a scroll-side concave portionand a columnar member. A lower end of the columnar memberis inserted into the bearing-side concave portion, and an upper end of the columnar member is inserted into the scroll-side concave portion. The columnar memberslides with at least one of the bearing-side concave portionand the scroll-side concave portion, thereby moving the fixed scrollin an axial direction between the partition plateand the main bearing. A high pressure is applied to a discharge spaceH, thereby pressing the fixed scrollagainst the orbiting scroll

Scroll compressor

A scroll compressor of the present invention includes a partition plate, a fixed scroll, an orbiting scroll, a rotation-restraining member, a main bearing, a discharge space, a ring-shaped first seal member and a ring-shaped second seal member. A pressure in the medium pressure space is set lower than that in the discharge space and higher than that in the low pressure space. The first seal member and the second seal member are sandwiched by the partition plate by means of a closing member, the fixed scroll can move in an axial direction of the fixed scroll between the partition plate and the main bearing. If a high pressure is applied to the discharge space, the fixed scroll can be pressed against the orbiting scroll.

Scroll compressor in which a fixed scroll and an orbiting scroll are placed between a partition plate and a main bearing

A scroll compressor of the present invention includes a partition plate, a fixed scroll, an orbiting scroll, a rotation-restraining memberand a main bearing. An inner wall of a fixed spiral lapof the fixed scrollis formed up to a location close to an ending-end of an orbiting spiral lapof the orbiting scroll, thereby differentiating, from each other, a containment capacity of one (A) of compression chambers and a containment capacity of the other compression chamberB, the fixed scrollcan move in an axial direction of the fixed scroll between the partition plateand a main bearing, and high pressure is applied to a discharge spaceH formed between the partition plateand the fixed scroll. According to this, the fixed scrollcan be pressed against the orbiting scroll

A diameter of a main bearing memberis defined as Dm, a length thereof is defined as Lm, a diameter of the eccentric bearing memberis defined as De and a length thereof is defined as Le. A ratio (=Lm/Dm) of the length and the diameter of the main bearing memberand a ratio (=Le/De) of the length and the diameter of the eccentric bearing memberare set to Le/De&#x2266;Lm/Dm&#x2266;1. Therefore, contact at edge portions of both ends of the eccentric bearing memberdoes not occur, and it is possible to prevent contact at edge portions of both ends of the main bearing membereven if the main shaftinclines, and to reduce a viscosity loss caused by oil. Hence, the present invention provides a scroll compressor securing reliability of the bearing membersandand having high efficiency.

a First gap () in a thrust direction between teeth bottoms of a fixed mirror plate () and teeth tips of an orbiting lap (), and a second gap () in the thrust direction between teeth bottoms of an orbiting mirror plateand teeth tips of a fixed lap () are formed such as to gradually increase from an outer peripheral side to an inner peripheral side of a scroll compressor, the first gap () is made greater than the second gap (). Contact surface pressures of the laps () and () are kept low with respect to pressure formation, contact pressure of the teeth tips of the fixed scroll part () and the teeth bottoms of the orbiting scroll part ()are equally maintained. With this loads applied to the scroll parts () and ()are equally received by a thrust surface.

Scroll compressor having a fixed scroll part and an orbiting scroll part

A scroll compressor in which a scroll fixed lap rising from a fixed plate of a fixed scroll and a scroll orbiting lap rising from an orbiting plate of an orbiting scroll are combined with each other to form compression chambers therebetween, the fixed scroll is made of iron-based material, the orbiting scroll is made of aluminum-based material, at least the plate back surface of the orbiting scroll is subjected to surface processing.

Scroll compressor with surface processed orbiting scroll plate back surface

A method of manufacturing a sliding part includes the steps of forming a green member by injection molding integrally and unmixedly two powdery metallic materials of different compositions, sintering the green member and subjecting the green member to at least one heat treatment.

Method of manufacturing sliding part and compressor provided with the sliding part

To prevent heat transfer inhibition and an increase in pressure loss due to refrigerating machine oil discharged into a cycle, and to provide a compact and highly efficient refrigerating cycle apparatus using carbon dioxide gas (CO). In a refrigerating cycle apparatus having at least a compressor, a radiator, a decompressor, a vaporizer and piping for successively connecting them, and provided with a refrigerant circuit in which refrigerant circulates in the compressor, the radiator, the decompressor, the vaporizer and the piping, carbon dioxide gas (CO) is enclosed as said refrigerant, and the drop in heat transfer rate and the increase in pressure loss in the heat exchanger can be restrained to very low levels by keeping oil enclosing volume in the refrigerant circuit to the quantity of carbon dioxide gas (CO) enclosed as refrigerant (weight %) to less than 40 weight % and more than 0, resulting in practical elimination of the increase in size and the impact on the drop in efficiency of the heat exchanger.

Refrigerating cycle device

A rotary compressor has a cylinder, a crank shaft having an eccentric part disposed in said cylinder, a bearing which rotatably supports said crank shaft, a roller which moves in said cylinder following said eccentric part, and a vane whose all or part of the tip is of R configuration, wherein a groove with which the vane tip is disposed in contact is provided on the outer periphery of said roller, a first oil groove is provided on the end face of said roller, and said roller is provided with an oil hole communicating said first oil groove and said groove of the roller.

Rotary compressor

A rotary compressor has a cylinder, a crank shaft having an eccentric part disposed in said cylinder, a bearing which rotatably supports said crank shaft, a roller which moves in said cylinder following said eccentric part, and a vane whose all or part of the tip is of circular configuration, wherein a groove with which the vane tip is disposed in contact is provided on the outer periphery of said roller, a first oil groove is provided on the end face of said roller, and said roller is provided with an oil hole communicating said first oil groove and said groove of the roller.

In a scroll compressor, a stationary scroll is pressed toward a movable scroll by a back pressure of a discharge fluid compressed by a compression mechanism, and wear powder, produced from an annular seal (which receives the pressure of the discharge fluid) as a result of precession of the stationary scroll, is arrested, thereby achieving the scroll compressor high in efficiency and reliability. A pressure-receiving surface for receiving a back pressure of the discharge fluid so as to press the stationary scroll toward the movable scroll is formed on that portion of the stationary scroll disposed around a communication port which is formed in the stationary scroll, and communicates with a discharge port. An annular seal is provided to form a seal between the stationary scroll and an upper frame around a region of communication between the communication port and the discharge port in such a manner as to satisfy a necessary annular sealing surface area, and a circumferential recess is provided on that side lower in pressure than this annular seal.

Scroll compressor having an annular seal for a stationary scroll

An acceleration sensor includes: a piezoelectric vibrator including a piezoelectric element having a first principal surface and a second principal surface opposed each other, a first and a second electrode formed on the first and the second principal surface, and conductive protrusions made of a metal material or a ceramic material and formed by a thermal spraying process; and a holding body for holding the piezoelectric vibrator via the conductive protrusions.

Acceleration sensor and method for producing the same

A DC gas discharge type image display device includes a front glass substrate; a rear glass substrate facing the front glass substrate, interposing a discharge gas therebetween; a set of anodes including a plurality of line electrodes formed on the rear glass substrate; a set of cathodes including a plurality of line electrodes placed on the front glass substrate so as to perpendicularly cross the set of anodes; and a plurality of discharge cells, each being provided so as to correspond to each of the cross points of the set of anodes and the set of cathodes. The device is driven in a refresh driving method or a memory driving method. As to the production of this device, the set of cathodes is formed by a spraying method. The cathodes are made from aluminum, nickel, an aluminum alloy or a nickel alloy. The discharge gas is a mixed gas of He and Xe.

Image display apparatus and method for fabricating the same

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Shiga, Japan

Hidenobu Shintaku