An air cleaning or purifying system includes a main air cleaner or purifier having an upper seating surface that is at least partially flat and at least one portable air purifier having a base configured to be seated on re lifted from the upper seating surface. The main air purifier and the portable air purifier may each have a filter and a fan. The air main and portable air purifiers may operate together. The portable air purifier may be moved to another room, or may be seated on the main air purifier such that various combinations of air purifying modes and air purifying capacities may be performed.

An air cleaning or purifying system includes a main air cleaner or purifier having an upper seating surface that is at least partially flat and at least one portable air purifier having a base configured to be seated on re lifted from the upper seating surface. The main air purifier and the portable air purifier may each have a filter and a fan. The air main and portable air purifiers may operate together. The portable air purifier may be moved to another room, or may be seated on the main air purifier such that various combinations of air purifying modes and air purifying capacities may be performed.

An air purifier including a housing including an inlet, a first outlet, and a second outlet; a first air blower arranged in the housing and configured to blow air from the inlet in a first direction; a second air blower arranged in the housing in series with the first air blower and configured to blow air from the inlet in a second direction opposite to the first direction; and a purifying filter arranged in the housing downstream of the second air blower with respect to the second direction, wherein the inlet is positioned between the first air blower and the second air blower, the first outlet is positioned downstream of the first air blower with respect to the first direction so that the air blown by the first air blower in the first direction is discharged through the first outlet, and the second outlet is positioned downstream of the purifying filter with respect to the second direction so that the air blown by the second air blower in the second direction passes through the purifying filter and is thereafter discharged through the second outlet.

An air purifier including a housing including an inlet, a first outlet, and a second outlet; a first air blower arranged in the housing and configured to blow air from the inlet in a first direction; a second air blower arranged in the housing in series with the first air blower and configured to blow air from the inlet in a second direction opposite to the first direction; and a purifying filter arranged in the housing downstream of the second air blower with respect to the second direction, wherein the inlet is positioned between the first air blower and the second air blower, the first outlet is positioned downstream of the first air blower with respect to the first direction so that the air blown by the first air blower in the first direction is discharged through the first outlet, and the second outlet is positioned downstream of the purifying filter with respect to the second direction so that the air blown by the second air blower in the second direction passes through the purifying filter and is thereafter discharged through the second outlet.

A heating, ventilation, and/or air conditioning (HVAC) unit includes a heat exchange section having a plurality of panels defining an air flow path through the heat exchange section. The air flow path includes an upstream portion and a downstream portion, the upstream portion has a first cross-sectional area, and the downstream portion has a second cross-sectional area greater than the first cross-sectional area.

The present invention relates to an air conditioning device. The air conditioning device sucks air through a suction portion and sending the sucked air to a blowing portion to perform air conditioning, wherein the suction portion includes a virus killing portion formed of a fiber to which copper ions are bonded and killing a virus, the virus killing portion includes a caz fabric configured to contain 5 to 50 wt % of an antiviral alginic acid conjugate fiber configured so that the copper ions are contained in an amount of 6,000 to 100,000 ppm in a fiber, and the virus killing portion has a differential pressure exceeding 0 Pa and less than 10 Pa.

A robot purifier including: a purifying part which draws, purifies, and discharges air; and a driving part which is located at a lower end of the purifying part and is capable of autonomous driving, wherein the purifying part is capable of rotating 360 degrees horizontally, and the purifying part also is capable of rotating vertically such that an air intake direction and an air discharge direction in the vertical and horizontal directions is controllable.

An air treatment device and an air conditioner indoor unit are provided. The air treatment device has an air outlet frame of a purification air duct. The air outlet frame has a ventilation hole and a cooperation hole. A water tank drawer is moveable on the air outlet frame and has two spaced-apart cooperation protrusions on a bottom wall thereof. A safety locking member of the air treatment device has a rotating shaft and a locking member. The rotating shaft is rotatable in the cooperation hole to switch the locking member between a locking position of the locking member and a movement-permitting position of the locking member. At the locking position, the locking member engages the cooperation protrusions to prevent the displacement of the cooperation protrusions. At the movement-permitting position, the locking member is located between the two cooperation protrusions to avoid engagement with the cooperation protrusions.

An air treatment device and an air conditioner indoor unit are provided. The air treatment device has an air outlet frame of a purification air duct. The air outlet frame has a ventilation hole and a cooperation hole. A water tank drawer is moveable on the air outlet frame and has two spaced-apart cooperation protrusions on a bottom wall thereof. A safety locking member of the air treatment device has a rotating shaft and a locking member. The rotating shaft is rotatable in the cooperation hole to switch the locking member between a locking position of the locking member and a movement-permitting position of the locking member. At the locking position, the locking member engages the cooperation protrusions to prevent the displacement of the cooperation protrusions. At the movement-permitting position, the locking member is located between the two cooperation protrusions to avoid engagement with the cooperation protrusions.

A filter screen rail module, a cleaning member, an indoor unit of an air conditioner, and an air conditioner are provided. The filter screen rail module is applied to the indoor unit of the air conditioner. The indoor unit of the air conditioner includes a face frame defining an air inlet. The filter screen rail module is disposed adjacent to the air inlet. The filter screen rail module is separable from the face frame. The filter screen rail module is provided with a guiding space, in which the filter screen moves.