Disclosed is a cross-flow fan including a fan rotor and a housing. The cross-flow fan has a blow-out path defined by first and second extension wall portions and two sidewalls. The first extension wall portion continuously extends from a tongue portion of the housing to the blow-out port. The second extension wall portion faces the first extension wall portion. The two sidewalls are respectively provided at axial ends of the fan rotor. The two sidewalls are formed such that the blow-out path has a narrowed portion whose cross-sectional area decreases as its cross-sectional shape changes from a rectangular shape to a trapezoidal shape from an upstream side toward a downstream side thereof, the trapezoidal shape having a portion near the second extension wall portion smaller in width than a portion near the first extension wall portion.

Disclosed is a cross-flow fan including a fan rotor and a housing. The cross-flow fan has a blow-out path defined by first and second extension wall portions and two sidewalls. The first extension wall portion continuously extends from a tongue portion of the housing to the blow-out port. The second extension wall portion faces the first extension wall portion. The two sidewalls are respectively provided at axial ends of the fan rotor. The two sidewalls are formed such that the blow-out path has a narrowed portion whose cross-sectional area decreases as its cross-sectional shape changes from a rectangular shape to a trapezoidal shape from an upstream side toward a downstream side thereof, the trapezoidal shape having a portion near the second extension wall portion smaller in width than a portion near the first extension wall portion.

The present invention is related in general to air circulators, and in particular, to an air circulator with a vein control system to direct and adjust airflow patterns. According to an exemplary embodiment, the present invention provides adjustable, vertical veins that are attached to the outlet of a tower fan. According to a preferred embodiment, the veins are pivotally mounted in such a way that by turning a knob, the veins can either be directed into a focused air-flow pattern or adjusted to a divergent air-flow pattern, or at any setting in between.

The present invention is related in general to air circulators, and in particular, to an air circulator with a vein control system to direct and adjust airflow patterns. According to an exemplary embodiment, the present invention provides adjustable, vertical veins that are attached to the outlet of a tower fan. According to a preferred embodiment, the veins are pivotally mounted in such a way that by turning a knob, the veins can either be directed into a focused air-flow pattern or adjusted to a divergent air-flow pattern, or at any setting in between.

An air-conditioning apparatus that uses refrigerant having a higher density than that of air, and includes a housing, an air inlet provided in a front surface of the housing to allow air in a room to flow into the housing, a heat exchanger that transfers heat between the refrigerant and the air that flows into the housing through the air inlet, an air outlet that allows the air subjected to heat exchange at the heat exchanger to be blown from the housing, a fan provided in an air passage extending from the air inlet to the air outlet, and a sensor that detects leakage of the refrigerant. The heat exchanger is provided above the fan, and the sensor is provided below the fan.

An air-conditioning apparatus that uses refrigerant having a higher density than that of air, and includes a housing, an air inlet provided in a front surface of the housing to allow air in a room to flow into the housing, a heat exchanger that transfers heat between the refrigerant and the air that flows into the housing through the air inlet, an air outlet that allows the air subjected to heat exchange at the heat exchanger to be blown from the housing, a fan provided in an air passage extending from the air inlet to the air outlet, and a sensor that detects leakage of the refrigerant. The heat exchanger is provided above the fan, and the sensor is provided below the fan.

Disclosed is an indoor unit of an air conditioner including: a casing; a cross-flow fan arranged in the casing and having a fan rotor and a tongue portion extending in an axial direction along an outer periphery of the fan rotor below the fan rotor and forward of a center axis of the fan rotor to define a suction port, the cross-flow fan forming in the casing an air flow directed from the rear to the front; and a heat exchanger arranged upstream of the fan in a direction of the air flow and having an inclined portion inclined to be positioned further downward toward a front side. The heat exchanger is arranged such that a front end of the inclined portion is located below the fan rotor and between a foremost portion and center axis of the fan rotor in a front-to-back direction.

Disclosed is an indoor unit of an air conditioner including: a casing; a cross-flow fan arranged in the casing and having a fan rotor and a tongue portion extending in an axial direction along an outer periphery of the fan rotor below the fan rotor and forward of a center axis of the fan rotor to define a suction port, the cross-flow fan forming in the casing an air flow directed from the rear to the front; and a heat exchanger arranged upstream of the fan in a direction of the air flow and having an inclined portion inclined to be positioned further downward toward a front side. The heat exchanger is arranged such that a front end of the inclined portion is located below the fan rotor and between a foremost portion and center axis of the fan rotor in a front-to-back direction.

An air conditioner indoor unit is provided. The indoor unit has a housing, a volute and a first heat exchanger. The housing is provided with an installation cavity. The volute is installed in the installation cavity. An air outlet of the volute is inclined towards a bottom of the installation cavity. The first heat exchanger is installed in the installation cavity corresponding to the air outlet. The first heat exchanger extends from a bottom of the volute to a top of the volute. An air inlet cavity is defined by the volute, the first heat exchanger and the bottom of the installation cavity.

An air circulator with a vane control system to direct and adjust airflow patterns. According to an exemplary embodiment, the present invention provides adjustable, vertical vanes that are attached to the outlet of a tower fan. According to a preferred embodiment, the vanes are pivotally mounted in such a way that by turning a knob, the vanes can either be directed into a focused air-flow pattern or adjusted to a divergent air-flow pattern, or at any setting in between.