Sanyo Electric Co., Ltd.

Sanyo Electric Techno Clean Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Tetsuya Masuda

Hiroshi Hasegawa

Masaya Tadano

Takahiro Nakamura

Hiroshi Mukaiyama

Masafumi Nishino

Tamotsu Kawamura

Kiyokazu Fujikawa

Motohiko Kosano

Koji Ono

Mitsuru Naganawa

Harumi Takeuchi

Nobuo Koumoto

Kazuyoshi Tomochika

Masakatsu Morishige

Nobuhiro Asada

Etsushi Nagae

Haruhisa Yamasaki

Toshiyuki Ebara

Satoshi Imai

Masanobu Wada

Masaru Matsui

Shinichi Akiyama

Ichiro Kamimura

Kazuaki Mizukami

Masaaki Nagai

Eiji Fukuda

Koji Sato

Norio Sawada

Yoshiaki Noguchi

Hirokazu Izaki

Toshikazu Ishihara

Yoshitsugu Nishiyama

Hiroyuki Kuribara

Kazuaki Suito

Keiji Sato

Seishi Iitaka

A heat transfer fin () comprises a plate-like base section (), a cylindrical collar section (), a recessed section () which has a sloped surface (), and a flare section () which, when combined with another heat transfer fin (), is in surface contact with the sloped surface () of the another heat transfer fin (). The sloped surface () of the recessed section () and the root of the collar section () are connected, the connection portion where the sloped surface () of the recessed section () and the collar section () are connected is bent at an acute angle, and the root of the collar section () reaches a position beyond a reference plane (S) which is in contact with a surface () of the base section (), the surface () being located on the side opposite the flare section ().

Heat transfer fin, heat exchanger, and refrigeration cycle device

An heat pump drying machine has a normal dry mode (e.g., compression ratio is equal to or greater than 3) for operating a compressor at a predetermined dry operation frequency and an energy saving dry mode (e.g., compression ratio is equal to or greater than 2.3 and is less than 3) for operating the compressor at an energy saving operation frequency that is lower than the dry operation frequency. A control device is provided to control an operation frequency of the compressorso that the two dry operation modes are switched to each other. The control device can execute the control for increasing the operation frequency of the compressor to the dry operation frequency during the operation of the energy saving dry mode.

Heat pump drying machine

There are disclosed a heat pump device and a drying machine using the device in which abnormal water supplying into a water-cooling heat exchanger for use in water-cooling of a heat pump can be easily detected without disposing any water amount gauge particularly. The heat pump device comprises: a water-cooling heat exchangerfor taking heat of a refrigerant which enters a capillary tubea water amount adjusting valvefor adjusting the amount of cooling water to be supplied to the water-cooling heat exchangera temperature sensororfor detecting temperature of the cooling water in the water-cooling heat exchangeror temperature of the refrigerant passed through the water-cooling heat exchanger; and a control unitfor controlling the water amount adjusting valveand the control unit judges abnormal water supplying into the water-cooling heat exchangerin accordance with the controlling state of the water amount adjusting valveand a change of the temperature detected by the temperature sensor under the controlling state.

Heat pump device and drying machine

An object is to provide a drying machine which can accomplish delicate drying and reduce burdens on a matter to be dried during drying while securing a predetermined evaporation temperature in an evaporator. In summary, a dry cleaner equipped with a heat pump device comprises a water-cooling heat exchanger which removes heat from a refrigerant entering a capillary tube; and a control device which variably controls a discharged heat amount in the water-cooling heat exchanger and capacity of the compressor, wherein the control device has at least two kinds of drying modes including a usual drying mode and a delicate drying mode, and in the delicate drying mode, a temperature of air discharged into a storage chamber is set lower than in the usual drying mode to control the capacity of the compressor and to increase the discharged heat amount in the water-cooling heat exchanger.

Drying machine

An on-vehicle air-conditioner for air-conditioning has a refrigeration circuit provided with a refrigerant car exterior heat exchanger installed for exchanging heat with the car exterior air that can be used for cooling and for heating, and at least one opening and closing duct for air inflow rate regulation installed in front of and/or behind the refrigerant car exterior heat exchanger. By controlling the opening/closing of the duct according to the situation, the arrangement can solve problems of the prior art, and can efficiently and sufficiently perform cooling, heating, defrosting or the like. The arrangement is useful even when using, for example, COas a refrigerant, in vehicles such as hybrid cars using electricity and gasoline as their energy source, idle stop coping cars or the like.

On-vehicle air-conditioner for air-conditioning

There is disclosed a washing/drying machine having a purpose of shortening a time required for a washing operation and improving an operation efficiency, and comprising: an inner drum in which things to be washed are accommodated and in which a washing operation of the things to be washed and a drying operation after end of the washing operation are performed; a water supply passage for supplying water into the inner drum and a drainage passage for discharging the water from the inner drum in the washing operation; a refrigerant circuit in which a compressor, a gas cooler, an expansion valve, an evaporator and the like are successively connected to one another in an annular form via a piping and in which carbon dioxide is used as a refrigerant; and a blower for blowing air which has exchanged heat with the gas cooler into the inner drum to allow the air passed through the inner drum to exchange the heat with the evaporator in the drying operation.

Washing/drying machine

A washing/drying machine has objects to shorten a time required for a washing operation, to improve a heat exchange capability in a radiator and an evaporator, and to shorten a drying time for things to be dried, and comprises: an accommodating chamber in which things to be washed (things to be dried) are accommodated and in which a drying operation of the things to be washed is performed; a refrigerant circuit in which a compressor, a gas cooler, a decompression device, an evaporator and the like are successively connected to one another in an annular form via a piping and in which carbon dioxide is used as a refrigerant and which has a supercritical pressure on a high pressure side thereof; and blower means for blowing air which has exchanged heat with the radiator into the accommodating chamber to allow the air passed through the accommodating chamber to exchange the heat with the evaporator, wherein the blower means constitutes a circulation direction of the air passed through the gas cooler, and that of the refrigerant flowing in the gas cooler in such a manner as to form a counter-flow, and constitutes a circulation direction of the air passed through the evaporator, and that of the refrigerant flowing in the evaporator in such a manner as to form a counter-flow.

An air conditioner has an outdoor unit and a plurality of room units supplied with a refrigerant from the outdoor unit. The outdoor unit and the room units are connected by a plurality of refrigerant pipes. In a recovery operation for returning refrigerator oil from the room units, the refrigerant pipes and the like to the outdoor unit, the plurality of room units are divided into a plurality of room unit groups, and the recovery operation of the refrigerant is carried out for each of the room unit groups.

Method of returning refrigerator oil of air conditioner

Growing community of inventors

Ota, Japan

Tetsuya Masuda