Disclosed is an air cleaner having independent fluid paths and a home appliance having the air cleaner. The air cleaner includes a front panel having a plurality of air inlets formed thereon for air to flow in from outside of the case, first and second blower devices arranged inside the case to allow air to flow in through the plurality of air inlets, first and second filter units arranged to filter the air flowing in by the first and second blower devices, a first outlet located on the case to release the air, a second outlet formed at a different location from that of the first outlet, a first fluid path formed between one of the plurality of air inlets and the first outlet; and a second fluid path formed between another of the plurality of air inlets and the second outlet.

In a substrate processing apparatus (1), above a plurality of processing parts (31) arrayed in an up-and-down direction, arranged are a plurality of collecting pipes (61a to 61c). The plurality of collecting pipes (61a to 61c) correspond to a plurality of fluid classifications, respectively. Further, provided are a plurality of exhaust pipes (4) extending upward from the plurality of processing parts (31), into which exhaust gases from the processing parts (31) flow, respectively. At an upper end portion of each of the exhaust pipes (4), provided is a flow path switching part (5) which connects the upper end portion to the plurality of collecting pipes (61a to 61c) and switches a flow path of the exhaust gas flowing in the exhaust pipe (4) among the plurality of collecting pipes (61a to 61c). In the substrate processing apparatus (1), it is possible to reduce a pressure loss in the exhaust pipe (4) and reduce a footprint.

An example exhaust gas filter for a reflow oven comprises a filter chamber, a filtering piece and a vapor chamber. An upper transverse passage is formed between the vapor chamber top plate and the filter element, a gap is formed between one side of the top plate and the sidewall of a filter chamber, and the upper transverse passage is in fluid communication with the gap; one filter chamber sidewall forming a gap with the top plate is disposed with a filter chamber air inlet for introducing air, and one of the other three sidewalls of the filter chamber is disposed with an exhaust gas inlet for introducing exhaust gas from the exhaust gas filter chamber, so that the air and the exhaust gas can enter the upper transverse passage through the gap.

Particles in an accommodation chamber are also easily discharged while facilitating replacement of an atmosphere in the accommodation chamber with an inert gas. An EFEM includes a load port 4, a housing configured to define, in the housing, a transfer chamber closed by connecting the load port 4 to an opening provided in a partition wall, a supply pipe for supplying nitrogen to a transfer chamber, and a discharge pipe 49 for discharging a gas in the transfer chamber. The load port 4 includes an opening/closing mechanism 54 capable of opening and closing a lid 101 of a mounted FOUP 100, and an accommodation chamber 60 kept in communication with the transfer chamber via a slit 51b and configured to accommodate a part of the opening/closing mechanism 54. The discharge pipe 49 is connected to the accommodation chamber 60 to discharge the gas in the transfer chamber via the accommodation chamber 60.

A method of filtering air using a composite filter substrate having a mixture of fiber shapes and sizes layer is disclosed. The method provides improved particle cleaning efficiency.

Granular material flows out through the discharge opening of a silo and through a sealed housing to a target location. A vent opening in a top portion of the silo has a vent cover operative to selectively open and close the vent opening. When the vent cover is closed, air movement into an upper portion of the silo is prevented. A gate is operative to control a flow of granular material through the discharge opening. A vacuum conduit has a lower input end thereof connected to an interior of the housing, and an upper output end thereof located in an upper portion of an interior of the silo. Material flowing out of the silo creates a vacuum drawing dust from the housing up the vacuum conduit into the silo.

A selective filtration system for an operator cab attached to an agricultural vehicle. A HVAC unit supplies conditioned air to an operator space selectively from a CAT 4 filter and a CAT 2 filter. A pressurization blower and two way valve controls flow from the CAT 4 filter to the HVAC unit. Control of flow or isolation of the CAT 2 filter is provided by pressure variations within the system. The CAT 4 filter and CAT 2 filter are isolated from the ambient when they are not in use by valves. A calibrated orifice enables positive pressurization to the CAT 2 filter to hold the valves closed.

A filter element of an air filter, including: a filter medium for filtering air, partially surrounding an element interior of the filter element with respect to an element axis; wherein the filter element replaceably arranged within an openable filter housing having at least one inlet for air to be purified and at least one outlet for purified air so that said filter element separates said inlet from said outlet; wherein the filter element has at least one element-side support element on an outer side facing away from the element interior on at least one end face which is axial with respect to the element axis; wherein the support element includes at least one element supporting portion, which, at least in the installed state of the filter element in the filter housing, has a surface contour deviating from a flat surface on its end face facing away from the element interior.

A fragrance dispenser for emitting fragrance into an airstream impinging on an air filter, the dispenser having a receptacle with an open end that faces toward the air filter and that has a porous diffuser layer occlusively overlying the open end of the receptacle.

An HVAC system that utilizes an air-to-air heat exchanger includes an HVAC ductwork section including a fan, and a filter assembly in fluid flow communication with the HVAC ductwork section. The filter assembly has a filter compartment having an opening oriented generally transverse to a direction of air flow through the filter assembly. A compressive member is provided on at least a portion of a perimeter extending around the opening. The compressive member is adjustable between an installation configuration in which the compressive member is spaced from a position that is to be occupied by a filter when the filter is installed in the filter compartment and an installed configuration in which the compressive member engages at least a portion of one of an upstream and a downstream face of the filter when the filter is positioned in the filter compartment.