Mitsubishi Denki Kabushiki Kaisha

Sony Semiconductor Solutions Corporation

Fumiaki Sano

Toshiyuki Nakamura

Kiyoharu Ikeda

Yoshihide Ogawa

Hiroshi Ogawa

Norihide Kobayashi

Koji Ishijima

Takashi Yamamoto

Masahiko Oide

Eiji Watanabe

Masayuki Kakuda

Kazutomo Asami

Fumio Wada

Shuji Motegi

Takeshi Fushiki

Minoru Ishii

Takuho Hirahara

Teruhiko Nishiki

Takashi Sebata

Shinji Nakashima

Katsuyoshi Wada

Shin Sekiya

Yoshinori Shirafuji

Keiji Sakaino

Susumu Kawaguchi

Kazuhiro Nakane

Masao Tani

Masahiro Sugihara

Hiroshi Nakashima

Noboru Masuda

Sei Ueda

Kouji Masumoto

Osamu Iwabuchi

Kazuyuki Akiyama

The present technology relates to a solid-state imaging apparatus and a driving method that can perform imaging at lower power consumption. By providing the solid-state imaging apparatus including a pixel array section on which a plurality of SPAD pixels is two-dimensionally arranged, in which in a case where illuminance becomes first illuminance higher than reference illuminance, a part of the SPAD pixels of the plurality of pixels arranged on the pixel array section is thinned, it is possible to image at lower power consumption. The present technology can be applied to an image sensor, for example.

Solid-state imaging apparatus and driving method thereof

On the assumption that pressure Pm (MPa) of a boss portion outside space determined by a restrictor and a flow regulating valve provided midway in an oil feed passageway is expressed by Pm &equals;Ps&plus;&agr;, and a differential pressure value at which a difference between high and low pressures becomes minimum in a running pressure range of a scroll compressor is represented by min(Pd&minus;Ps), the value a in the above expression is set to fall in a range expressed by 0<&agr;<min(Pd&minus;Ps). Here, Ps represents suction pressure (MPa) of the compressor, and Pd represents discharge pressure (MPa) of the compressor.

Scroll compressor

A compressor includes a compression mechanism part for compressing refrigerant sucked from an outside of the hermetic container and discharging compressed refrigerant to a discharge space, an electric motor part composed of a stator and a rotor, facing a first space which is at an opposite side of the discharge space with respect to the compression mechanism part in the hermetic container, for driving the compression mechanism part through a main shaft, a passage at an external circumferential side of the compression mechanism part, for connecting the discharge space with the first space, and a fan provided at an end of the rotor, facing the first space. The refrigerant discharged into the discharge space passes through the passage at the external circumferential side of the compression mechanism part to reach the first space, and passes the fan to be discharged to the outside of the hermetic container.

Compressor

A scroll compressor including a guide frame ( ) for fixing a fixed scroll member ( ) and a compliant frame ( ) for supporting an oscillating scroll member ( ) in the axial direction of the scroll compressor in the guide frame ( ), wherein the guide frame ( ) has a plurality of cylindrical surfaces ( ), and the compliant frame ( ) has a plurality of cylindrical surfaces ( ) which engage with the cylindrical surfaces ( ), and wherein in order to facilitate assembling of the guide frame ( ) and the compliant frame ( ), the first cylindrical surfaces ( ) are first engaged with each other when the compliant frame ( ) is inserted into the guide frame ( ), that is, the cylindrical surfaces are engaged in the order of increase in diameter.

Scroll compressor including guide frame and compliant frame

A structure is provided that prevents excessive force from acting on a fastening portion where a guide frame is fastened to a sealed container. A fastening position of the guide frame and sealed structure is set within a range bounded by an upper meshing circumferential inner surface of the guide frame together with an upper meshing circumferential outer surface of a compliant frame and a lower meshing circumferential inner surface of the guide frame together with a lower meshing circumferential outer surface of the compliant frame.

According to a scroll compressor of the present invention, at least one of a diameter space between an upper fitting surface of the guide frame and an upper fitting surface of the compliant frame at an upper fitting part where the upper fitting surface of the guide frame contacts with the upper fitting surface of the compliant frame, and a diameter space between a lower fitting surface of the guide frame and a lower fitting surface of the compliant frame at a lower fitting part where the lower fitting surface of the guide frame contacts with the lower fitting surface of the compliant frame is set to be equal to or shorter than a diameter space between the rotor and the stator.

Scroll compressor having a compliant frame and a guide frame for the orbiting scroll

In a scroll compressor, a clearance is made between the opposed faces of a bed plate of a fixed scroll and a stationary member and a compression gas is introduced into the clearance for pressing the fixed scroll against an orbiting scroll. A recess is made in the center of the stationary member, is surrounded by a muffler, and is formed with a discharge hole directed in a radial direction. The scroll compressor can be assembled efficiently.

The invention concerns a scroll compressor which is low in noise caused by water hammering of a refrigerant gas just after a discharge valve is closed. The scroll compressor includes a discharge member (45) having a discharge port (8) opposed to a discharge port (5) of a fixed scroll (2) and a discharge valve (9) opposed to the discharge port (8) of the discharge member (45) and opened/closed depending on a difference between flow passage pressure of a refrigerant gas and pressure in a high pressure space (27) in a sealed vessel (1). At least either of the fixed scroll (2) and the discharge member (45) is formed with a muffler chamber communicated with the discharge port (5, 8) and having a diameter larger than a diameter of the discharge port (5) of the fixed scroll (2) for suppressing occurrence of an impulse wave caused by water hammering when the discharge valve (9) is closed. Noise caused by a pressure ripple of the discharge port lessens, quieting the operation of the scroll compressor.

Scroll compressor having a discharge muffler chamber

The invention concerns a scroll compressor which is low in noise caused by water hammering of a refrigerant gas just after a discharge valve is closed. The scroll compressor includes a discharge member (45) having a discharge port (8) opposed to a discharge port (5) of a fixed scroll (2) and a discharge valve (9) opposed to the discharge port (8) of the discharge member (45) and opened/closed depending on a difference between flow passage pressure of a refrigerant gas and pressure in a high pressure space (27) in a sealed vessel (1). At least either of the fixed scroll (2) and the discharge member (45) is formed with a counterboring part which communicates with an intermediate pessure chamber after the and intermediate pressure chambers have begun to communicate via separation of the spiral teeth.

Scroll compressor having a counterboring part communicating with an

The invention concerns a high-reliability scroll compressor with little moment for making a fixed scroll unstable. A scroll compressor comprising in a sealed vessel a fixed scroll, an orbiting scroll being combined with the fixed scroll for forming a compression space, and executing orbiting motion with respect to the fixed scroll, a frame for axially supporting the orbiting scroll and radially supporting a drive shaft, and a seal member being disposed in an axial gap between a high and low pressure separator stuck to the frame by any method and the fixed scroll, wherein a base plate outer peripheral surface of the fixed scroll is radially supported by a stationary member coaxial with the base plate outer peripheral surface, and wherein with the stationary member as a guide, the fixed scroll can make axial movement within a range in which it interferes with the orbiting scroll downward in the axial direction and with the high and low pressure separator upward in the axial direction.

Scroll compressor with axial biasing

The invention concerns a scroll compressor which is low in noise caused by water hammering of a refrigerant gas just after a discharge valve is closed. The scroll compressor includes a discharge member (45) having a discharge port (8) opposed to a discharge port (5) of a fixed scroll (2) and a discharge valve (9) opposed to the discharge port (8) of the discharge member (45) and opened/closed depending on a difference between flow passage pressure of a refrigerant gas and pressure in a high pressure space (27) in a sealed vessel (1). At least either of the fixed scroll (2) and the discharge member (45) is formed with a counterboring part which communicates with an intermediate pressure chamber after the high and intermediate pressure chambers have begun to communicate via separation of the spiral teeth.

The invention concerns a high-reliability scroll compressor with little moment for making a fixed scroll unstable. A scroll compressor comprising in a sealed vessel a fixed scroll, an orbiting scroll being combined with the fixed scroll for forming a compression space, and executing orbiting motion with respect to the fixed scroll, a frame for axially supporting the orbiting scroll and radially supporting a drive shaft, and a seal member being disposed in an axial gap between a high and low pressure separator stuck to the frame by any method and the fixed scroll. A base plate outer peripheral surface of the fixed scroll is radially supported by a stationary member coaxial with the base plate outer peripheral surface, and with the stationary member as a guide. The fixed scroll can make axial movement within a range in which it interferes with the orbiting scroll downward in the axial direction and with the high and low pressure separator upward in the axial direction.

Growing community of inventors

Kanagawa, Japan

Fumiaki Sano