Mitsubishi Electric Corporation

Sony Corporation

Sony Electronics Inc

Koji Kawashima

Shingo Kingetsu

Fumio Matsumoto

Rafael Calderon

David Boyden

Takuma Sasai

Masahiro Kondo

Takaaki Nagashima

Hidenori Nagahama

David Dykstra

Duyet Pham

Taishi Hamasaki

A dynamic vibration absorber needs to be designed so that the natural frequency of the dynamic vibration absorber alone becomes equal to the natural frequency of a stator. If these natural frequencies greatly deviate from each other, the effect is reduced. Therefore, the natural frequency of the dynamic vibration absorber alone needs to be accurately calculated to make designing. However, in actual, the natural frequency is greatly influenced by the rigidity around the mounting position of a vibration damping target, and thus there is a problem that the natural frequency becomes different from the designed value upon mounting. An object of the present invention is to reduce an influence on the natural frequency of the dynamic vibration absorber alone given by the rigidity around the mounting position, by mounting a plurality of dynamic vibration absorbers to a dynamic vibration absorber mounting member, thereby making the dynamic vibration absorber more effective.

Rotating electric machine having dynamic vibration absorber

This rotating electric machine includes: a rotor having a shaft; a stator formed around the rotor; a seal ring formed around the shaft and having a plurality of through holes; a gland seal formed so as to surround the seal ring and having an oil feed port; and a partition plate formed between the seal ring and the gland seal, wherein the partition plate is formed at a position opposed to the oil feed port and is fixed to an upper wall and a lower wall in an axial direction of the gland seal, and the partition plate has a reinforcing plate at such a position as not to obstruct the oil feed port, the reinforcing plate being fixed to a side wall of the partition plate on a gland seal side and being in close contact with a circumferential wall of the gland seal.

Rotating electric machine and rotating electric machine production method

Gas coolers one of which is housed in a gas cooler chamber provided at an upper portion of a casing and installed near an opening of the casing above each stator coil end, are provided. A gas circulation passage is formed in which a cooling gas circulates through a space A provided at an intake side of each fan&#x2192;a space B surrounding the fan&#x2192;the gas cooler chamber&#x2192;the gas cooler&#x2192;a space C including the stator coil end&#x2192;a gap between a rotor and a stator and gas passages formed in the rotor and the stator&#x2192;a space D between an outer periphery of the stator and the casing&#x2192;the space A.

Rotary electric machine having gas coolers

In a rotating electric machine with shaft-seal devices mounted thereon, an object to provide them is to uniformize a temperature distribution of a sealing ring with a simple structure. The rotating electric machine with the shaft-seal devices mounted thereon includes a rotor having a shaft; a stator disposed in a circumferential surrounding of the rotor; a sealing ring having a plurality of through holes formed therein, being disposed in a circumferential surrounding of the shaft; a gland seal having an oil supply opening therein, for enclosing a circumferential surrounding of the sealing ring; a partition plate disposed between the sealing ring and the gland seal; and a housing on which the gland seal is fixed, for accommodating the rotor and the stator.

Rotating electric machine with shaft-seal devices having partition plate

A journal bearing, in which a lower half carrier ring is disposed on the outer peripheral side of a horizontally installed rotating shaft, and an upstream side pad and a downstream side pad are disposed on the inner side of the lower half carrier ring, includes an upstream side oil supply portion and downstream side oil supply portion which supply lubricant oil to the upstream side pad and downstream side pad, the bearing being characterized in that the supply quantity of lubricant oil supplied from downstream side oil supply nozzles of the downstream side oil supply portion is adjusted so as to be less than the supply quantity of lubricant oil supplied from upstream side oil supply nozzles of the upstream side oil supply portion.

Journal bearing

The present invention achieves oil amount reduction and size reduction in a seal oil supply device for rotating electric machine by suppressing expansion of a rotary shaft due to its temperature increase and reducing the gap between the rotary shaft and a seal ring in normal operation. In this seal oil supply device for rotating electric machine, seal oil is supplied from a seal oil pump to a seal ring of a rotating electric machine in which hydrogen gas is sealed, via a differential pressure regulation valve for regulating a pressure of the seal oil. A first route is provided for supplying the seal oil from the seal oil pump via the differential pressure regulation valve, and in addition, a second route is provided for supplying the seal oil from the seal oil pump via a relief valve.

Seal oil supply device for dynamo-electric machine and seal oil supply method

A television device has a television receiver residing substantially within a television receiver enclosure. A high definition multimedia interface is (HDMI) coupled to the television receiver. A detachable HDMI switch is operatively coupled to the HDMI interface, the HDMI switch and has at least two user-side HDMI buses connected thereto. The detachable HDMI switch resides in an HDMI switch housing that exposes the at least two user-side HDMI connector ports. The detachable HDMI switch housing is detachably connected to the television receiver enclosure to permit the HDMI switch housing to be either attached to the television receiver enclosure for use at the television receiver enclosure, or to permit the HDMI switch housing to be separated from the television receiver enclosure to permit the HDMI switch housing to be situated remotely from the television receiver enclosure so that the HDMI connector ports are remotely accessible while being selectable by the television device. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

DTV with detachable HDMI inputs

In a totally-enclosed horizontal rotating electric machine in which a rotor horizontally arranged and a stator arranged at an outer circumference side of the rotor are hermetically sealed in a main frame, and the rotor and the stator are cooled by circulating refrigerant gas, which is encapsulated in the main frame, through a refrigerant passageway, and water-cooled heat exchangers for cooling the refrigerant gas are provided on the way of the refrigerant passageway, the heat exchangers are respectively arranged in a longitudinal direction at each of positions neighboring both left-right end portions at a front side and both left-right end portions at a rear side of the main frame, and a feed-water inlet and a drain outlet of cooling water are provided at an upper side of the heat exchangers.

Totally-enclosed horizontal rotating electric machine

A switching module, system and method facilitate communications between one or more non-CEC enabled devices and a television of an audio/visual (A/V) system. The switching module is able to accommodate both Consumer Electronic Control (CEC) enabled and non-CEC enabled devices for communication with the television. In response to user control of a user interface of the switching module, when a non-CEC enabled device is coupled to the switching module, a high definition multimedia interface (HDMI) input port of the HDMI switching module is selected and a default HDMI device type and corresponding HDMI logic address is set for the non-CEC enabled device. This information is displayed for the user by the television.

HDMI switching technology for the coupling of consumer electronic control and/or non-consumer electronic control devices in an audio/visual environment

Growing community of inventors

Tokyo, Japan

Koji Kawashima