In the solution put forth, there is a frame structure (122) and an inner surface structure (124) in an installation frame (110) of an exhaust blower (108) of a building (100). A bottom part (130) of the frame structure is intended to be installed towards a lead-through (106) of the building, and a top part (132) towards the exhaust blower installed over it. The frame structure surrounds the inner surface structure so that it does not cover bottom and top parts (126, 128) of the inner surface structure. The inner surface structure forms a suction channel (134) allowing exhaust air (114) flow through the frame. Inside the installation frame, a controller (112) has been installed, adapted to measure the exhaust air flowing in the suction channel and to generate, on the basis of the measurement, a control command for the exhaust blower to control the operation of the exhaust blower.

The roof cover vent system comprises a vent sheath, a flange sheath, and a pitched roof. The pitched roof further comprises a roof vent and a roof pitch. The vent sheath attaches to the flange sheath to form a composite prism structure. The roof vent inserts into the composite prism structure formed by the vent sheath and the flange sheath. The composite prism structure formed by the vent sheath and the flange sheath enclose the lateral face and the inferior structures of the roof vent while allowing the roof vent to release gas into the atmosphere. The flange sheath is formed as a prismatic section. The prismatic section is selected such that center axis of the composite prism structure formed by the vent sheath and the flange sheath will remain parallel to the force of gravity while the flange sheath rests flush on the pitched roof.

The roof cover vent system comprises a vent sheath, a flange sheath, and a pitched roof. The pitched roof further comprises a roof vent and a roof pitch. The vent sheath attaches to the flange sheath to form a composite prism structure. The roof vent inserts into the composite prism structure formed by the vent sheath and the flange sheath. The composite prism structure formed by the vent sheath and the flange sheath enclose the lateral face and the inferior structures of the roof vent while allowing the roof vent to release gas into the atmosphere. The flange sheath is formed as a prismatic section. The prismatic section is selected such that center axis of the composite prism structure formed by the vent sheath and the flange sheath will remain parallel to the force of gravity while the flange sheath rests flush on the pitched roof.

A roof mounted ventilation assembly having an integrated supply and relief fan assembly. The assembly is drum shaped with a central portion circumferentially defined by centrifugal blades that extend between top and bottom plates. Both top and bottom plates have a central opening, respectively, and axial supply fan blades are disposed within the central opening of the top plate. A supply duct extends through the central portion, fluidly coupling the central openings. The supply duct fluidly communicates a roof-mounted air intake to a supply discharge plenum operatively associated with an interior space. An inlet collar is fluidly couples the remainder of the central portion not closed off by the supply duct to the interior space, wherein relief air in this remainder of the central portion is urged by the centrifugal blades out exhaust ducts to the external environment in a direction transverse relative to axial supply air.

An off-ridge roof ventilation device for placing on an opening of a roof deck. The ventilation device comprises an elongated main hood with a curved shape. The right end of the main hood is closed by a right-side panel, and the left end of the main hood is closed by a left-side panel. The main hood comprises a perforated top face and a venting opening on a bottom face. A throat panel is placed on the bottom face of the main hood in a manner to reduce the venting opening. A perforated interior panel is placed between the top face of the main hood and the throat panel to eliminate wind driven rain and/or snow even in high wind situations. The perforations are preferably designed as mini-louvers, wherein the mini-louvers of the main hood and the mini-louvers of the throat panel comprise the same shape and count the same number.

An off-ridge roof ventilation device for placing on an opening of a roof deck. The ventilation device comprises an elongated main hood with a curved shape. The right end of the main hood is closed by a right-side panel, and the left end of the main hood is closed by a left-side panel. The main hood comprises a perforated top face and a venting opening on a bottom face. A throat panel is placed on the bottom face of the main hood in a manner to reduce the venting opening. A perforated interior panel is placed between the top face of the main hood and the throat panel to eliminate wind driven rain and/or snow even in high wind situations. The perforations are preferably designed as mini-louvers, wherein the mini-louvers of the main hood and the mini-louvers of the throat panel comprise the same shape and count the same number.

A roof vent has a vent base and a cover. The vent base has an annular main body that extends from an inner perimeter to an outer perimeter. An inside baffle extends upwardly from the vent base. The cover is mounted to cover the opening and the inside baffle, and includes an outside baffle that extends downwardly from the cover, spaced a distance from the inside baffle to form a filter receiving space. A skirt extends downwardly from an edge of the cover towards the vent base. A plurality of upper pegs and a plurality of lower pegs extend downwardly into the filter receiving space. A filter is positioned in the filter receiving space, where it is penetrated by and held in place by the upper and lower pegs.

A roof vent has a vent base and a cover. The vent base has an annular main body that extends from an inner perimeter to an outer perimeter. An inside baffle extends upwardly from the vent base. The cover is mounted to cover the opening and the inside baffle, and includes an outside baffle that extends downwardly from the cover, spaced a distance from the inside baffle to form a filter receiving space. A skirt extends downwardly from an edge of the cover towards the vent base. A plurality of upper pegs and a plurality of lower pegs extend downwardly into the filter receiving space. A filter is positioned in the filter receiving space, where it is penetrated by and held in place by the upper and lower pegs.

A sound proof space, a ventilation system, and a method of ventilating a soundproof space, the ventilation system including at least one fan positioned at least one air inlet aperture or at least one air outlet aperture for sucking air therethrough and providing an air flow; at least one ventilation aperture for guiding air into the space to be ventilated; at least a first and a seconder air channel. The first and the second air channel are formed respectively into a single layer of a sandwich-type wall, roof or floor structure of the space to be ventilated; and the first and the second air channel are joined at one end thereof to form an indirect air path from the air inlet aperture to the ventilation aperture.

An exhaust vent cap assembly can be installed in a roof deck of a building to allow a one-time connection of the insulated duct to the roof from exhaust fans within the building.