Daikin Industries, Ltd.

Tomohiro Yabu

Shuji Ikegami

Nobuki Matsui

Satoshi Ishida

Tetsuya Morizane

Yoshimasa Kikuchi

Gakuto Sakai

Akihiro Eguchi

Hiromune Matsuoka

Kaichi Tsuji

Junichi Teraki

Yoshinori Narikawa

Akira Kamino

Ryusuke Fujiyoshi

Guannan Xi

Eisaku Okubo

Toshiyuki Nishio

Takahisa Sueoka

Kei Suzumura

Norihiro Takenaka

Takashi Takahashi

Yasunobu Okumura

Jun Koizumi

A humidity control apparatus performs a humidification operation in which outdoor air is supplied to the inside of a room through a moisture-desorption adsorption heat exchanger serving as a condenser and room air is discharged to the outside through a moisture-absorption adsorption heat exchanger serving as an evaporator. The humidity control apparatus includes a preheat heat exchanger which, in the humidification operation, is positioned upstream of the moisture-desorption adsorption heat exchanger in the flow of outdoor air in an air passage and serves as a condenser to heat outdoor air in a refrigerant circuit, and a heat-recovery heat exchanger which, in the humidification operation, is positioned downstream of the moisture-absorption adsorption heat exchanger in the flow of room air in the air passage and serves as an evaporator to recover heat from room air in the refrigerant circuit.

Humidity control apparatus

An air conditioning ventilator includes a ventilation unit, an air conditioning unit and a bypass channel. The ventilation unit has an air supply channel configured to supply air from an outdoor space to a target space, and an air supply fan configured to create a first airflow from the outdoor space to the target space within the air supply channel. The air conditioning unit has an intake channel configured to take in air from the target space, a temperature regulator configured to regulate the temperature of air that has passed through the intake channel, a discharge channel configured to discharge temperature-adjusted air that has been regulated by the temperature regulator to the target space, and an air-conditioning fan configured to create a second airflow from the intake channel to the discharge channel via the temperature regulator. The bypass channel bypassed the air supply channel and the discharge channel.

Air conditioning ventilator

The present invention is directed to a humidity controlling ventilator which takes in air through the use of an air blowing fan, and controls the humidity of the taken air via an adsorption heat exchanger prior to supplying it to the room. In the invention, the air blowing fan is controlled so as to make an air volume flow rate approach a predetermined target volume flow rate. To do this, the invention calculates the fan's air volume flow rate based on a specific volume of air downstream of the adsorption heat exchanger and an air mass flow rate of the fan. The calculated value is fed to an air blow controller that is configured to control the fan such that the calculated air volume flow rate approaches the predetermined target air volume flow rate.

Humidity controlling ventilator

A ventilation system includes a connection determinator configured to determine that N-th, second, and sixth humidity controlling ventilation devices are connected to an identical second duct bank in a situation where when fans of the second and sixth humidity controlling ventilation devices are driven, and the rotational speed of a fan of the N-th humidity controlling ventilation device is changed, a power detector detects fluctuations in the power consumed by the fan of each of the second and sixth humidity controlling ventilation devices.

Ventilation system

A humidity control apparatus has a refrigerant circuitthat has a compressorand a first adsorption heat exchangerand a second adsorption heat exchanger, each of which has an adsorbent for adsorbing the moisture of air supported thereon, and that reversibly circulates refrigerant to perform a vapor compression refrigeration cycle. The refrigerant circuitis provided with a sensible heat exchangerin which the refrigerant after having passed through the adsorption heat exchangerfunctioning as an evaporator exchanges heat with the air having passed through the adsorption heat exchangerfunctioning as a condenser, thereby cooling the air.

An air conditioning unit has improved visual appeal in a non-operational state, and can reduce smudging of a ceiling in an air conditioned space by discharged air. The air conditioning unit is configured to be disposed above a space to be air-conditioned. The air conditioning unit includes a case, a first moveable panel, and a moveable panel actuating mechanism. The case has at least one discharge duct on a bottom face. The first moveable panel is configured to open and close the discharge duct. The moveable panel actuating mechanism moves the first moveable panels between a first position at which at least the outside section of the discharge duct is closed off, and a second position at which the outside section of the discharge duct is opened.

Air conditioning unit

In order to give a simple appearance design to an interior panel () for an air conditioner () of the type having a couple of juxtaposed air inlet () and air outlet () and to eliminate the need for a complicated mechanism or behavior for implementing the design, the interior panel () is provided with: an opening cover () covering the couple of air inlet () and air outlet () together; and an opening/closing mechanism for opening and closing the couple of air inlet () and air outlet () by changing the position of the opening cover () within a region including the couple of air inlet () and air outlet (). The opening/closing mechanism is a mechanism for turning the opening cover () about a central axis (O) located between the couple of air inlet () and air outlet ().

Interior panel of air conditioner and air conditioner

An air conditioning apparatus is disposed above an air conditioned space. The air conditioning apparatus includes a case, a bottom surface panel, a filter, and a filter support part. The bottom surface of the case is open. The bottom surface panel covers part of the open portion of the bottom surface of the case. The filter is accommodated within the case. The filter support part detachably supports the filter such that the filter is separated upward from the bottom surface panel by a predetermined gap.

Air conditioning apparatus

A humidity control system () is disclosed which includes a refrigerant circuit (). The refrigerant circuit () includes first and second absorbent-supported heat exchangers () and performs a refrigeration cycle by the circulation of refrigerant. In addition, in the refrigerant circuit (), the circulation direction of refrigerant is reversible. The first and second heat exchangers () are disposed in a casing (). In the humidity control system (), the distribution route of air is changed such that a first air stream is passed through either one of the first and second heat exchangers () that is functioning as an evaporator while a second air stream is passed through the other heat exchanger that is functioning as a condenser. A compressor (), an expansion mechanism (), and a four-way valve () in the refrigerant circuit () are disposed together with the heat exchangers () in the casing ().

Humidity control system

A humidifierhas a water circuitthat switches the flow of water between a first flow state, in which hot water introduced from a first inletflows through a first heat exchangerand flows to a first outletand in which cold water introduced from a second inletflows through a second heat exchangerand flows to a second outlet, and a second flow state, in which the hot water introduced from the first inletflows through the second heat exchangerand flows to the first outletand in which the cold water introduced from the second inletflows through the first heat exchangerand flows to the second outlet. The water circuithas a bypass passagefor connecting the inletsto the outletsrespectively at the time of switching the flow of water. With this, even if the respective three-way valves, . . . cause a faulty operation, the cold water and the hot water surely flow through the bypass passageand flow to the respective outlets

Humidifier

An air conditioning apparatus includes a vapor compression refrigerant circuit that uses carbon dioxide as a refrigerant, an electric component assembly for controlling an operation for structural devices, and a refrigerant emission pipe capable of emitting carbon dioxide from the refrigerant circuit to the electric component assembly.

A humidity control system () includes a refrigerant circuit () in which an adsorption heat exchanger () carrying an adsorbent thereon is connected. During a regeneration action of a humidification operation of the humidity control system (), outdoor air passes through the adsorption heat exchanger () from upstream towards downstream in the flow of refrigerant. Therefore, the air can be effectively increased in temperature at the air inflow end of the adsorption heat exchanger (), thereby preventing freezing of dew condensation water.

An adsorption heat exchanger () is constituted by a fin-and-tube heat exchanger. In the adsorption heat exchanger (), a first tube column (), a second tube column () and a third tube column () are formed in order from upstream to downstream in air flow. The adsorption heat exchanger () is formed of a first column part () including the first tube column (), a second column part () including the second tube column () and a third column part () including the third tube column (). In the adsorption heat exchanger (), a first adsorption layer () is formed on the fins () in the first column part (), a second adsorption layer () is formed on the fins () in the second column part () and a third adsorption layer () is formed on the fins () in the third column part (). The amount of adsorbent contained in each adsorption layer increases in order of the first adsorption layer (), the second adsorption layer () and the third adsorption layer ().

Adsorption heat exchanger with varying adsorbent

An air conditioner is installable in a ceiling of an air-conditioned room and is disposed with a casing in whose top surface is formed a suction opening and in whose bottom surface are formed blowout openings, and in which is formed an air flow path that leads from the suction opening to the blowout openings, a blow fan that is disposed in the air flow path, and a heat exchanger that is disposed in the air flow path.

Air conditioner

A refrigerant circuit () is provided with an outdoor heat exchanger (), an indoor heat exchanger () and two adsorption heat exchangers (). The indoor heat exchanger () is disposed in an indoor unit (), while the outdoor heat exchanger () and the two adsorption heat exchangers () are disposed in an outdoor unit (). Moisture in outdoor air taken in the outdoor unit () is adsorbed by the adsorbent in the adsorption heat exchanger () serving as an evaporator and the air is dehumidified. The dehumidified air is cooled by the indoor heat exchanger () serving as an evaporator and the air is supplied to the room space.

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Osaka, Japan

Tomohiro Yabu