Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Akira Takamori

Shoji Yamada

Shinichi Suzuki

Tomoya Fukui

Kenichi Sakoda

Yoshinori Tanikawa

Motoo Sano

Mitsuhiro Shirota

Satoshi Michihata

Makoto Yoshihashi

Motoshige Satou

Natsuko Nishigaki

Takeshi Mori

Takashi Matsumoto

Takashi Ikeda

Masao Akiyoshi

Toshiaki Yoshikawa

Masayuki Tsuji

Hiroaki Ishikawa

Seiji Nakashima

Kunihiko Kaga

Masayuki Oishi

Isao Otsuka

Seiji Hirakawa

Nobuaki Uehara

Hiroki Okazawa

Naoki Iwamoto

Toshinori Nakamura

Takuya Mukoyama

Jun Kitamura

Takahiro Murayama

Masakazu Kondou

Hiroshi Fukazawa

An indoor unit includes a casing having a suction port formed in an upper part and a blow-out port formed on a lower side at a front face part, an axial-flow or diagonal-flow fan provided on the downstream side of the suction port in the casing, and a heat exchanger provided on the downstream side of the fan and on the upstream side of the blow-out port in the casing, in which air blown out of the fan and refrigerant are heat-exchanged.

Indoor unit of air conditioner and air conditioner including a heat exchanger on a downstream side of a blower

In an indoor unit for an air-conditioning apparatus, a downstream edge of each of the blades of the fan of an air-blowing device, when viewed in plan view, intersects any of the members of a motor stay of the air-blowing device irrespective of an angle of rotation of the fan. The motor stays are connected to the mounting portions of a bellmouth in which the fan is disposed, wherein the mounting portions protrude downward from a downstream outlet end of the bellmouth and each include side surfaces, of which at least a first side surface opposing a pressure surface of each of the blades of the fan is at an angle relative to a rotation axis of the fan.

Indoor unit for air-conditioning apparatus with fan bellmouth and motor stay

An indoor unit includes a heat exchanger provided on the downstream side of a fan and formed with a plurality of lower end portions in a vertical cross section from the front side to the back side of a casing, a plurality of drain pans provided below the lower end portions of the heat exchanger and configured to collect drain water occurring on the heat exchanger, and a drain channel provided between the drain pans and configured to be a flow channel of the drain, and a connecting port to which a drain hose configured to drain the drain water collected by the drain pans to the outside of the casing, and one of the drain pans is arranged to a level equal to or higher than the level of the other drain pan, and the drain channel is provided on the drain pan arranged on the back side of the casing.

Indoor unit of air-conditioning apparatus and air-conditioning apparatus

In an air conditioner, reverse inhalation is prevented while broad band noise and wind sound are reduced. A projection arranged at the leading end of a stabilizer on the downstream side of an air stream flowing along a surface of the stabilizer opposing an impeller and protrudes toward the impeller to define the shortest distance to the impeller. A plurality of grooves or projections are provided on the opposing surface on the upstream side of the projection to disturb the air stream flowing along the opposing surface. The positions of the grooves or the projections are arranged apart in a rotational axis direction. A plurality of convex portions are provided to disturb an air stream flowing along a surface of a casing opposing the impellers. The positions of the convex portions are arranged apart in the rotational axis direction of the impeller.

Air conditioner

Inside a blown-out air duct in the air conditioner through which conditioned air reaches a blowing-out port, there is provided a rectifying box having a air passage therein, for rectifying a flow of the conditioned air toward a predetermined flowing direction in order to prevent any dew condensation at the blowing-out port in the air conditioner. In the meantime, in order to suppress noise, rectifying plates for reducing an inflowing angle of air flowing into the fin tips of a heat exchanger are interposed between an axial fan and the heat exchanger for taking in the air from the axial fan for heat exchanging.

An outlet structure for an air-conditioner has a fan guard disposed on the outlet side of the air-conditioner for preventing foreign matter from entering to an air blower, and at least one air-direction control vane disposed upstream and/or downstream of the fan guard. The fan guard has elements, except for an outer frame, not in parallel to the rear edge of the upstream air-direction control vane or the front edge of the downstream air-direction control vane. Even in the case where the distance between a fan guard and air-direction control vanes is reduced, and airflows interfere with the fan guard and the air-direction control vanes as the size of air-conditioners is progressively reduced, air-turbulence noise may be reduced.

Air-conditioner having outlet structure for reducing air turbulence noise

The invention relates to a separation-type air conditioner capable of increasing the heat exchanging area of a compact indoor unit and of effecting high-performance heat exchange, and particularly employable as a high-performance yet compact indoor unit whose height is low. A front heat exchanger having a configuration in which an upper edge portion and a lower edge portion are respectively made to recede is disposed in an indoor unit. In addition, a rear heat exchanger separate from the front heat exchanger is disposed on the rear surface side of the front heat exchanger. Consequently, it is possible to increase the heat exchanging area in an indoor unit having the same height, and improve the heat exchanging capacity.

Separate-type air conditioner

Growing community of inventors

Tokyo, Japan

Akira Takamori