Daikin Industries, Ltd.

Tsuyoshi Yokomizo

Takahiro Yamasaki

Akihiko Sakashita

Takashi Kashihara

Naofumi Yokoyama

Yoshiharu Michitsuji

Morimichi Okada

Yoshiteru Nouchi

Yoshiaki Yumoto

Kenji Masuda

Kazuto Yamagata

Tsunehisa Sanagi

Ryouta Suhara

Takashi Gotou

Mario Hayashi

Akihiko Mori

Yukihiro Takagaki

Shunichi Uenaka

Takayoshi Yamamoto

Tomoo Masuda

Yuuki Obata

False determination in the presence or absence of a person in a in a room is limited. An air conditioner suspends an air conditioning operation if a room is vacant. If at least one of motion detectors, each provided to one of the indoor units, starts to detect the presence of a person during suspension of the air conditioning operation, an indoor controller of an indoor unit sums, for each of the motion detectors, time periods in which the presence of the person is detected to obtain a detection time period sum. If any one of detection time period sums, each for one of the motion detectors, reaches a reference value within a predetermined time period, the outdoor controller causes the air conditioner to resume the air conditioning operation.

Occupancy based control of air conditioning system

An air conditioning apparatus includes a centrifugal fan mounted in an interior of a casing and a pressure sensor. The pressure sensor can have a primary-side pressure detection tube opened in a position adjacent to a circumferential part of the casing on an inlet side surface of the bell mouth of the fan when the bell mouth is seen from a direction along the rotary shaft to detect a primary-side pressure of the centrifugal fan. Alternatively, the pressure sensor can have a primary-side pressure detection tube opened in a position adjacent to a circumferential part of the casing on a heat exchanger compartment side surface of the partition member when the partition member is seen from a direction along the rotary shaft to detect a primary-side pressure of the centrifugal fan.

Air conditioning apparatus

In an air conditioner, one of a linkage mode or a non-linkage mode is selected by a user as a control mode of an external device. In the air conditioner, when the linkage mode is selected, on/off control of the external device by using a human detection sensor is permitted during operation, whereas on/off control of the external device by using the human detection sensor is inhibited during suspension of operation. In the air conditioner, when the non-linkage mode is selected, on/off control of the external device by using the human detection sensor is always permitted, irrespective of whether the air conditioner is in operation or not.

Air conditioner

An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger, a centrifugal fan, a heater and a fan heat shield. The centrifugal fan includes a bladed wheel mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along an opening direction of the fan entrance and an opening direction of the blow-out port, and the bladed wheel being made of resin. The heater is mounted in a blow-out port opposed space opposed to the blow-out port within a fan downwind space located on a downwind side of the bladed wheel within the fan compartment. The fan heat shield member is mounted in the fan downwind space in order to cover a part of the bladed wheel that is opposed to the heater.

An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing and having a fan entrance, a heat exchanger, a first drain pan mounted in the heat exchanger to receive water produced by dew condensation in the heat exchanger, and a centrifugal fan. The centrifugal fan includes a bladed wheel mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along the fan entrance. The first drain is disposed adjacent to a drain pan nearby lateral part of multiple lateral parts of the casing that are disposed along the opening direction of the fan entrance. The rotary shaft is disposed adjacent to a bladed wheel nearby lateral part of the multiple lateral parts of the casing and being opposed to the drain pan nearby lateral part.

An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger, and a centrifugal fan. The partition member has a fan entrance bored in opposition to the blow-out port. The centrifugal fan includes a bladed wheel mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along the fan entrance and the blow-out port. The rotary shaft is disposed adjacent to a bladed wheel nearby lateral part of multiple lateral parts of the casing that are disposed along the opening direction of the fan entrance and the opening direction of the blow-out port. The blow-out port is at least partially disposed in a position adjacent to a blow-out port nearby lateral part of the multiple lateral parts of the casing and being opposed to the bladed wheel nearby lateral part.

An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger, and a centrifugal fan. The blow-out port is at least partially disposed adjacent to a blow-out port nearby lateral part of the casing along an opening direction of a fan entrance and the blow-out port. A fan downwind space is located on a downwind side of a bladed wheel within a fan compartment, and has a blow-out port opposed space and a blow-out port non-opposed space. A first guide member directs air existing in the blow-out port non-opposed space toward the blow-out port opposed space, and is mounted in a boundary region located astride of regions located on forward and rearward sides in a rotary direction within the blow-out port non-opposed and blow-out port opposed spaces, respectively.

Of four corner covers () in an indoor unit(), a horizontal length of an outer surface in a second corner cover () is the same as a horizontal length of an outer surface in a first corner cover(), a horizontal length of an outer surface in a third corner cover () and a horizontal length of an outer surface in a fourth corner cover () are the same and are smaller than the horizontal length of the outer surface of the first corner cover(). Opening dimensions (LA, LB, LC, LD) of four air outlet ports () in a horizontal direction are the same.

Indoor unit

A casing () of an indoor unit () contains an indoor fan (), an air filter (), and an indoor heat exchanger (). The indoor unit () includes: a divider plate () which includes an air hole () for attaching the air filter () therein, and divides space inside the casing () into a room upstream of an air flow passing through the air filter (), and a room downstream of the air flow passing through the air filter (); a dust removing mechanism () for removing dust trapped on the air filter (); and a dust container () for containing the dust which is removed by the dust removing mechanism (), and is transferred through a transfer duct (). The indoor heat exchanger () is arranged around the indoor fan (), and the dust container () is arranged below the indoor heat exchanger ().

Indoor unit of air conditioner

An indoor unit of an air conditioner includes an indoor fan, an air filter for capturing dust in an air drawn by the indoor fan, a brush mechanism for removing the dust adhering to the air filter, and a dust storage container for storing the dust removed from the air filter by the brush mechanism. The dust storage container is provided with an opening in which the brush mechanism is positioned. A sealing member is attached to the dust storage container, the sealing member being provided in the dust storage container and between the opening and a storage space in which the dust is stored, for sealing a space between an inner wall surface of the dust storage container and the brush mechanism.

An indoor unit () is provided with an output control portion () for controlling a cleaning signal output portion () to output a cleaning signal when it is determined that the amount of dust in a dust storing portion () has reached a predetermined first level, and when it is determined that the amount of dust in the dust storing portion () has reached a second level that is higher than the first level.

Disclosed is an indoor unit having a dust storage container in which dust removed from an air filter is stored, and a dust collecting box into which the dust in the dust storage container is transferred by utilizing an effect of blown air. The dust storage container is provided with a full condition detection means for detecting a dust full condition of the dust collecting box. The full condition detection means includes an LED and a phototransistor which are opposed to each other with a storage portion interposed therebetween. After a dust transfer operation which transfers the dust from the dust storage container to the dust collecting box, an intensity of light of the LED that has passed through the storage portion is detected by the phototransistor. If the detected light intensity is equal to or less than a set value, a full condition of the dust collecting box is detected.

In an indoor unit of an air conditioner including an air filter arranged on a suction side of an indoor fan, dust trapped on the air filter is reliably and efficiently removed by a simple structure. For that purpose, an indoor unit () is provided with a dust remover () for removing dust trapped on an air filter () arranged on a suction side of an indoor fan (), and a filter presser () for pressing a frame () of the air filter () so as to press the air filter () against the dust remover (). The air filter () is configured to move relative to the dust remover (), and the filter presser ().

An air filter () intermittently rotates by a predetermined rotation angle at each time, while being in contact with a bristle portion () of a rotating brush (). Accordingly, dust on the air filter () is scraped by the bristle portion (). The brush member () rotates about an axial center of a shaft () at each stop of the intermittent rotation of the air filter (), to come into contact with a cleaning brush member (). According, dust on the brush member () is removed by the cleaning brush member ().

Growing community of inventors

Osaka, Japan

Tsuyoshi Yokomizo