Matsushita Electric Industrial Co., Ltd.

Takeshi Watanabe

Satoshi Matsumoto

Yuji Tanaka

Shingo Sagata

Satoshi Imabayashi

Yuichi Uchikawa

Masanari Esaki

Hiroki Kokubu

Hirohisa Koizumi

Ryuta Kondo

Kazuo Matsumoto

Keijiro Kunimoto

Takashi Morishita

Yoshitsugu Nishiyama

Masanobu Aramaki

Fumihide Maeda

Hidetaka Taguchi

Shinichi Tokumaru

Hisashi Arai

Takeshi Sugimoto

The present invention includes a frame, an optical pick-up module fixed to the frame and a circuit board forming a control circuit fixed to the frame. The frame has fixing parts to other members.

Optical disc device having fixing parts for directly fixing a frame of the optical disk device to an electronic device

A flash water heater using a heat pump includes a heat exchanger in which a refrigerant flow path exchanges heat with a water flow path. Tap water is led directly to the water flow path, and hot water supplied from the water flow path is used. The water heater includes at least one of the following elements: 1) a load setter for setting a heating amount in the heat exchanger, and a heating controller for regulating a heating amount in response to an amount set by the load setter; 2) a heater for heating water flowing through the water flow path in the heat exchanger and water flowing the path before and after the heat exchanger; 3) plural compressors; and 4) plural heat-pump cycles. The water heater is excellent in start-up of hot water temperature when the hot water supply starts, controllability, and efficiency.

Heat pump water device

A plate heat exchanger includes a plurality of plates sandwiched between a pair of end plates. Each of the plurality of plates has two passageways defined therein that are not in fluid communication with each other. Alternatively, some of the plurality of plates have a passageway, while some of the remaining plates have another passageway. Two fluids flow through the two passageways in a countercurrent fashion. Because the countercurrent flows are superior in heat transfer efficiency, it is possible to enhance the performance and reduce the size of the plate heat exchangers.

Plate type heat exchanger and method of manufacturing the heat exchanger

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Nara, Japan

Takeshi Watanabe