Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Hidetomo Nakagawa

Hiroshi Yoshikawa

Shingo Hamada

Hiroaki Makino

Seiji Hirakawa

Takashi Kobayashi

Hajime Ikeda

Koji Sachimoto

Yosuke Kikuchi

Toshiaki Yoshikawa

Tsuyoshi Maeda

Tomohiko Takahashi

Akira Yatsuyanagi

Takashi Ikeda

Yasuhiro Yoshida

Yoshinori Yamamoto

Teruhiko Kumada

Masao Nagano

Hiroyuki Jinnai

Toshiyuki Kubono

Yoshihide Asai

Reiji Morioka

Yoshihiro Tanabe

Kunihiro Morishita

Yoshinori Tanikawa

Makoto Yoshihashi

Akinori Sakabe

Katsumi Shibayama

Isao Funayama

Tsukasa Takagi

Yoshikuni Kataoka

Motoshi Tezuka

Katsuhiro Tozuka

Nobutaka Tanabe

Takashi Kitazumi

A heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus are provided where heat exchange performance is improved, and drainage properties and resistance against frost formation are improved. A flat tube and a plurality of fins that are each a plate having a plate surface extending in a longitudinal direction and in a width direction orthogonal to the longitudinal direction are provided. The plate surface intersects a pipe axis of the flat tube, and the plurality of fins are arranged at an interval from one another. The plurality of fins each have a first spacer formed in the plate and maintaining the interval. The flat tube has a longitudinal axis of a section perpendicular to the pipe axis, and the longitudinal axis is inclined to the width direction by an inclination angle &#x3b8;. The first spacer has a standing surface extending in a direction intersecting the plate surface.

Heat exchanger, heat exchanger unit, and refrigeration cycle apparatus

A heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus are provided where deterioration in drainage and ventilation properties is prevented, an air passage is not easily clogged when frost forms, and both defrosting properties and heat exchange performance are achieved. A flat tube and a plurality of fins that are each a plate having a plate surface extending in a longitudinal direction and in a width direction orthogonal to the longitudinal direction are provided. The plate surface intersects a pipe axis of the flat tube. The plurality of fins each have an insertion portion in which the flat tube is inserted, a first spacer formed at a rim of the insertion portion and maintaining the interval, and a second spacer formed at a portion of the plate other than the rim of the insertion portion and maintaining the interval.

In an axial flow fan according to the present invention, a plurality of blades rotate about a rotation axis of the blades to convey a fluid. In the axial flow fan, the plurality of blades each have a leading edge at a leading side in a rotational direction, a trailing edge at a trailing side in the rotational direction, and an outer peripheral edge connecting the leading edge and the trailing edge. The leading edge of one of the plurality of blades and the trailing edge of another blade adjacent to the leading edge of the blade in the rotational direction are connected by a plate-shaped connection portion. The plurality of blades each have at least one plate-shaped reinforcement rib extending from a periphery of the rotation axis toward the outer peripheral edge of the blade.

Axial flow fan and air-conditioning apparatus having axial flow fan

In an indoor unit for an air-conditioning apparatus, a casing has an air inlet formed in an upper part and an air outlet formed below a front part. The casing accommodates a heat exchanger and fan. A horizontal airflow-direction louver is mounted pivotally inside the air outlet to guide airflow in a horizontally changeable manner. A vertical airflow-direction louver is mounted to cover the air outlet in a closed position and to guide airflow in a vertically changeable manner. An infrared sensor projects downward from the casing at a position in a horizontal end portion of the casing and in front of the air outlet. An airflow blocking portion is located behind the infrared sensor, and has a side wall on or beside one edge of the air outlet. The side wall is located closer to a center of the air outlet in the horizontal direction than the infrared sensor.

Indoor unit for air-conditioning apparatus with airflow blocking portion for infrared sensor

Propeller fan

In an air conditioner according to the present invention, an indoor unit includes an indoor air temperature detection unit to detect an indoor air temperature, a floor/wall/ceiling temperature detection unit to detect a floor and wall temperature and a ceiling ambient temperature, and a control device including a microcomputer in which a program relating to control of the air conditioner is embedded, wherein, in heating operation or ventilation operation, the control device performs circulator operation of moving air accumulating near a ceiling to a floor when the ceiling ambient temperature detected by the floor/wall/ceiling temperature detection unit becomes higher, by a predetermined threshold value or more, than an indoor air preset temperature set by a user.

Air conditioner

A coating composition including ultrafine silica particles having an average particle diameter of 15 nm or less and fluororesin particles, in which ultrafine silica particle content is 0.1 to 5 mass %, and the mass ratio of the ultrafine silica particles to the fluororesin particles is 70:30 to 95:5. According to the coating composition, there is provided a coating film which makes it possible to readily coat the surfaces of various articles without impairing the color tone and the texture and which is excellent in antisoiling performance and durability.

Coating composition, and its production, heat exchanger and air conditioner

An air conditioner having an air blower ( ) for air blowing, a front heat exchanger ( ) and a rear heat exchanger ( ) respectively provided on the front side and the rear side of an indoor unit ( ) so as to surround the air blower ( ) and for carrying out heat exchange between the indoor air and a refrigerant, a rear drain pan ( ) provided under this rear heat exchanger ( ) and for receiving drained water, and an air blower air path ( ) formed around the air blower ( ) and narrowed near the front end portion of the drain pan ( ). The lower portion of the rear heat exchanger ( ) is located rearward in comparison with the upper portion of the rear heat exchanger ( ) so as to be inclined backward. A louver ( ) is provided to extend upward from the front upper portion of the rear drain pan ( ) substantially along the shell of the air blower ( ) so as to guide the air passing through the rear heat exchanger ( ) to the air blower air path ( ), and to catch drained water from the upper portion of the rear heat exchanger ( ) and make the drained water flow into the rear drain pan ( ).

To obtain an air conditioning apparatus which provides a favorable atmosphere to the ear and saves energy even if the suction resistance of the impeller becomes high due to such as dust in the air conditioning apparatus. The air conditioning apparatus is provided with an impeller which is formed by a plurality of vanes and a ring for supporting the plurality of vanes, and includes a nozzle portion formed by a stabilizer and an air outlet, a cross flow fan formed by a guide wall, and a heat exchanger. The ratio H/&phgr;D of the outside diameter &phgr; D of the impeller to the height H of the air conditioning apparatus is 2.2 or above and 3.0 or below.

Growing community of inventors

Tokyo, Japan

Hidetomo Nakagawa