An air purifier capable of adjusting wind directions according to an embodiment of the present invention comprises: a housing having an air outlet port on one side thereof; an air guide having a front end portion disposed at the center of the air outlet port such that the air outlet port becomes a ring shape and a rear end portion extending in a direction toward the other surface of the housing and coupled to the inside of the housing so as to be rotatable in a direction inclined with respect to the air release direction of the air outlet port; and a rotation-restraining portion for restraining the rotation of the air guide by elastically supporting the air guide on the housing.

An open type breathing-out particles capture and filtration device includes a mask having an air-in space defined between an upper edge of the mask and a user's face; a suction assembly including an air expelling pipe communicable with the air-in space and a fan; filtering materials located upstream of the fan; and a power supply driving the fan to rotate and produce a suction airflow. External air flowed into the mask via the air-in space and air breathed out of the user's nose and mouth is sucked by the suction airflow to pass through the filtering materials, so that air discharged from the air expelling pipe is clean air without any infection source. With the air-in space, an additional load applied to the mask by the suction airflow is reduced and contact areas between the mask and the user's face is also reduced, making the mask more comfortable for wearing.

An air filter housing has an inner housing space adapted to receive an air filter element. The air filter housing includes a first housing end and a second housing end located axially opposite the first housing end in relation to the inner housing space, and an outlet pipe extending from the second housing end axially into the inner housing space. The outlet pipe has a center axis and an opening configured to receive clean air from the inner housing space, wherein at least an axial portion of the outlet pipe has a cross-sectional area along a geometrical plane perpendicular to the centre axis which is tapering.

Disclosed is an air cleaner, more specifically, an air cleaner including a blower that inhales air from the outside, and filters the inhaled air, and discharges the filtered air, a flow adjusting device disposed on the blower to inhale the air discharged from the blower, adjust a discharge direction of the inhaled air, and discharge the air, and a guide member disposed below the flow adjusting device to change a state of the flow adjusting device. An angle formed between a top surface of the flow adjusting device and a top surface of the blower may increase or decrease based on operations of the plurality of links, so that the state of the flow adjusting device may be changed from an orientation in which the top surface of the flow adjusting device is horizontal with the top surface of the blower to an orientation in which the top surface of the flow adjusting device is perpendicular to the top surface of the blower.

A separator tank and a gas compressor having a separator tank are provided. The separator tank includes a tank body defining an inner volume, a tank inlet pipe providing fluid communication with the inner volume of the tank body, wherein the tank inlet pipe tangentially penetrates the tank body and is oriented to direct fluid entering the tank body in a spiral fluid flow pathway, and a sump tube positioned to collect fluid flowing within the tank body, the sump tube comprising a vertically oriented opening oriented to align and capture fluid flowing along the spiral fluid flow pathway.

A crankcase ventilation device includes a housing and a flow directing member. The housing defines an inlet, an outlet and an internal volume. The inlet is configured to receive blow-by from an engine. The flow directing member is coupled to the housing and extends into the internal volume. The flow directing member includes a plurality of sidewalls, at least two of the plurality of sidewalls defining a window that fluidly couples the inlet to the internal volume. A filter media may be coupled to the flow directing member.

The present teachings provide for a housing for a panel filter, the housing including a main body, a plurality of first vanes, and a plurality of second vanes. The main body can define a chamber and a central aperture. The central aperture can extend through the main body and can be in fluid communication with the chamber. The plurality of first vanes can be disposed within the chamber and circumferentially spaced about the central aperture. Each first vane can extend radially outward from the central aperture a first distance. The plurality of second vanes can be disposed within the chamber and can be circumferentially spaced about the central aperture. Each second vane can extend radially outward from the central aperture a second distance that is less than the first distance.

The present invention provides an air purifier including a plurality of bi-directional fans, which are arranged to be misaligned in a vertical direction such that the discharge directions of discharge ports are different from each other.

The present application proposes an air cleaner including a blower configured to inhale air from an outside, filter the inhaled air, and discharge the filtered air; a flow adjusting device disposed above the blower, wherein the flow adjusting device is configured to inhale the air discharged from the blower, adjust a discharge direction of the inhaled air and discharge the air therefrom to the outside in a adjusted direction; and a guide member having one end passing through an upper surface of the blower and received in the blower, and the other end connected to the flow adjusting device. The guide member is configured to retract into an interior of the blower or extend from the upper surface of the blower to induce position change of the flow adjusting device. The angle defined between the upper surface of the flow adjusting device and the upper surface of the blower increases or decreases primarily based on an extent to which the guide member extends from the blower.

An air cleaner including a case comprising an upper surface and a side surface, a sensor to measure a degree of contamination of air introduced into the case, a round portion in a shape that is curved on the upper surface of the case, and a sensor air inlet on the round portion and through which air is introduced.