Hitachi-Johnson Controls Air Conditioning, Inc.

Nec Corporation

Sony Corporation

Sumitomo Chemical Company, Limited

Kenji Matsumura

Kazumoto Urata

Koji Naito

Akira Shinada

Mikihito Tokudi

Toru Yamamoto

Hiroyuki Asako

Yoshiki Takashima

Masayoshi Murofushi

Takeshi Endo

Nagatoshi Ooki

Kazuhiko Tani

Mamoru Houfuku

Masatoshi Shimizu

Shuuhei Tada

Nobuya Itoh

Ryuhei Wakita

Shinya Kimura

Takumi Kamiaka

Kazuhiro Ushiyama

Natsuko Suzuki

An air conditioner that includes a heat exchanger including: heat-transfer pipes extending in a horizontal direction and spaced apart at predetermined intervals in a vertical direction and configured to allow a thermal medium to flow therein. A part of the heat transfer pipes are used for at least one inflow path into which the thermal medium flows from the outside of the heat exchanger and the other part of the heat transfer pipes are used for at least one outflow path from which the thermal medium flows out to the outside. At least one connection pipe through which an outlet side of one of the at least one inflow path communicates with an inlet side of one of the at least one outflow path.

Air conditioner

An air conditionerincludes: an outdoor heat exchanger; an outdoor fanfor blowing air to the outdoor heat exchanger; an outdoor fan motorthat drives the outdoor fan; an outdoor fan inverterthat drives the outdoor fan motor; and a control unitthat generates a rotation-speed command voltage for controlling the rotation number of the outdoor fan motor. In addition, the control unit starts a defrost operation of the outdoor heat exchanger, based on the rotation-speed command voltage. In this manner, it is possible to achieve an outdoor device of an air conditioner in which there is no need to provide a current detecting sensor, and it is possible to detect frost formation over the heat exchanger during a heating operation and to perform a defrost operation at low costs.

A heat exchanger includes: a gas-side port connected to piping for a gaseous refrigerant; a liquid-side port connected to piping for a liquid refrigerant; a refrigerant path that links the gas-side port to the liquid-side port; at least four heat exchange part regions that perform heat exchange between air and the refrigerant flowing through the refrigerant path; and a branching and merging part that branches and merges the refrigerant path to connect the heat exchange part regions in series between the gas-side port and the liquid-side port through the refrigerant path. The heat exchange part regions are connected to each other through the branching and merging part so as to allow the number of refrigerant paths provided in the heat exchange part region near the gas-side port to be greater than the number of refrigerant paths provided in the heat exchange part region near the liquid-side port.

Heat exchanger

The present invention provides a heat exchanger having a heat exchanging portion HE including a plurality of paths through which a refrigerant flows and a plurality of columns of fin plate that exchange heat between the refrigerant and air, wherein, in a case where the heat exchanging portion functions as a condenser, the refrigerant is flown from a header into the heat exchanging portion HE via the plurality of paths, every two paths of the plurality of paths merge into one single path by branching/merging pipes after the refrigerant has flown through one fin plate, before the refrigerant flows through the other fin plate so as to flow out of the heat exchanging portion HE, wherein a difference in height between the highest path and the lowest path in a vertical direction is set equal to or less than half of a height of the heat exchanging portion HE.

The present invention is directed to vehicle communication equipment capable of transferring information using light without adding new light emitting means, and further, between a stationary apparatus and a vehicle or between vehicles. A light emitted from a signal lamp () of a stationarily installed traffic signal () or a head lamp () or a tail lamp () of a vehicle () is superimposed with a signal by a modulator (), the modulated light is received by a light receiving unit () of the vehicle () side, and the received modulated light is demodulated by a decoder () to be displayed on a display panel ().

Communication system for vehicle, vehicle, and communication device for vehicle

A variable-length packet switching system of the present invention converts variable-length packets to fixed-length packets without regard to the size of the individual variable-length packets and causes a packet switch to switch such fixed-length packets at high speed. The system realizes high-speed switching by use of, e.g., an H/W scheme. Particularly, the system is free from conversion losses when converting the variable-length packets to fixed-length packets and thereby minimizes a frequency band required of the packet switch without regard to the packet size.

Method and system for switching variable-length packets

In the present invention, any change of devices in possession by a user who gets on or gets off, for example, a vehicle is detected by comparing the devices detected by wireless communication at the time of getting on or getting off, thereby enabling the easy and sure prevention of any personal belongings of the passenger from being lost or left without constantly monitoring them. The property management apparatus sums up in time series the detection results by the plurality of property detection apparatuses for notifying the user the place of where the user loses the property.

Property management apparatus, property management method, and property management system

There are provided a polynucleotide sequence coding for an amino acid sequence capable of preferentially producing (S)-4-bromo-3-hydroxy-butanoate by asymmetrically reducing 4-bromo-3-oxobutanoate, A DNA construct having a promoter in operative linkage with the polynucleotide sequence, a recombinant vector containing the polynucleotide sequence, a transformant, a recombinant vector and the like.

Process for producing optically active 4-halo-3-hydroxybutanoate

An ATM system including a switch unit having a plurality of input/output ports and a plurality of interface units connected to the respective input/output ports of the switch unit, each of the interface units mutually generating an internal communication cell with information necessary for rate control of an ATM traffic added thereto, inserting the cell into a free band of a user traffic and sending the same to all the interface units through the switch unit to interchange rate control information between the respective interface units, thereby conducting rate control of an ATM traffic by which equal throughputs can be obtained among connections.

ATM system for conducting rate control of ATM traffic

A system switching over method and apparatus for duplicated ATM (asynchronous transfer mode) switch, which enables keeping the delay quality of each cell unchanged without any cell loss, are realized. At the time of system switching over, the system-switching control unit in each system (a system previously in operation and a system newly in operation) mutually communicates each other and manages a temporary cell storage unit, in which cells to be read out are stored in accordance with the delay priority group, in each system, and reads out cells in the order of higher delay priority whichever the system is. A delay priority selector in the system of an operation state is controlled to provide a cell read out path for outputting cells depending on a system from which the cell being read out.

Growing community of inventors

Tokyo, Japan

Kenji Matsumura