In a roof window system, the roof window (1) has a frame with a frame top member (21), and a sash with a sash top member (31), and further a ventilation device (40) for connection to a ventilation assembly by means of transition means provided between the ventilation assembly and the frame top member (21) and the sash top member (31) of the roof window (1) to accommodate a set of flow paths for air to and from the ventilation assembly. The transition means comprise a plurality of apertures (2102) extending through the frame top member (21).

The invention relates to an air purification apparatus. The apparatus is disposed in a window for separating an indoor space and an outdoor space. The apparatus comprising: an inlet chamber having a first inlet, a second inlet and an outlet, wherein the first inlet is operatively open to the outdoor space and the second inlet is operatively open to the indoor space; an air pumping unit for pumping air from the inlet chamber to the indoor space through the outlet, wherein the air is pumped into the inlet chamber through the first inlet or through the second inlet; and a filtering unit disposed upstream of the air pumping unit, for filtering pollutants in the air.

The present disclosure relates to air filters. More particularly, it relates to air filters including pleated filter media that can be uniformly expanded and contracted. In some embodiments, the air filters are adjustably sized air filter systems. In some embodiments, the air filters can be used in a window opening.

A heat exchange unit for a ventilation device includes: a case having a first inlet port through which first air is sucked and a second outlet port through which second air is discharged formed on a front side, and a first outlet port through which the first air is discharged and a second inlet port through which the second air is sucked formed on a back side; and heat exchangers having a first air passage through which the first air passes and a second air passage through which the second air passes formed thereon. A first separation plate for separating the first inlet port and the second outlet port is installed in the height direction on the front side of the case. A second separation plate for separating the second inlet port and the first outlet port is installed in the height direction on the other side of the case.

An air conditioner includes a controller that controls a driving unit of the air conditioner. The controller includes a determination unit that determines necessity of a contaminant reduction operation of the air conditioner based on whether the air conditioner is in a non-cooling operation period, and a setting unit that sets a condensation operation condition for forming condensed water on a surface of an indoor heat exchanger of the air conditioner. The controller performs the contaminant reduction operation of the air conditioner based on a necessity determination result of the determination unit in accordance with the condensation operation condition set by the setting unit.

A mounting bracket assembly includes a support bracket, an outdoor support mounted at the support bracket and configured to be supported by a wall, and a connection member. The support bracket includes a lateral fixation member configured to be fixed to an inner side of a window frame and extending along an extension direction, and a support plate. The lateral fixation member includes a lateral extension member. The lateral extension member includes an extension bottom plate, and a first extension side plate and a second extension side plate disposed at opposite side edges of the extension bottom plate, respectively. One end of the support plate is connected to the lateral fixation member, and another end of the support plate is configured to extend outside the window frame. One end of the connection member is configured to connect to a window air conditioner, and another end of the connection member is provided in the lateral extension member and connected to the extension bottom plate.

The present disclosure relates to air filters. More particularly, it relates to air filters including pleated filter media that can be uniformly expanded and contracted. In some embodiments, the air filters are adjustably sized air filter systems. In some embodiments, the air filters can be used in a window opening.

Air conditioner units and methods for operating air conditioner units are provided. A method includes determining a benchmark control signal corresponding to a predetermined speed of a fan of the air conditioner unit. The method further includes activating a heating unit of the air conditioner unit. The heating unit includes a plurality of heater banks. The method also includes activating the fan while the heating unit is active and measuring a control signal to the fan after activating the fan. The method further includes comparing the measured control signal to the benchmark control signal, and disabling one of the plurality of heater banks when the measured control signal is less than the benchmark control signal.

An auxiliary mounting device and mounting method for a saddle-type window air conditioner. The auxiliary mounting device comprises a base and two damping assemblies; the base is provided on a window, one of the damping assemblies is provided on one end of a connecting portion close to an indoor portion, and ends thereof are respectively connected to the base and the indoor portion; and the other damping assembly is provided on one end of the connecting portion close to an outdoor portion, and ends thereof are respectively connected to the base and the outdoor portion. During mounting, the two damping assemblies are first mounted onto the connecting portion, two ends of each damping assembly are respectively connected to the base and the indoor portion or the outdoor portion, then the saddle-type window air conditioner and the auxiliary mounting device are moved together onto the window, the base sits on the window, the saddle-type window air conditioner moves downwards under the action of gravity, thus driving the damping assemblies to stretch, and under the action of the damping assemblies, the connecting portion gradually moves in a direction toward the base, thereby enabling the saddle-type window air conditioner to fall slowly. The auxiliary mounting device has a simple structure and is easy to operate.