An air conditioning ventilation system comprising: air-intake portions 123 and exhaust portions 124 respectively provided in a plurality of rooms of a building; air-blowing sections 103 for sending wind to the air-intake portions 123; and a return zone 101 where air discharged from the exhaust portions 124 by the air-blowing sections 103 joins up; wherein the air-blowing sections 103 and an air conditioning section are placed in the return zone 101, a bathroom 106 and other rooms include ventilation intake portions 125 and ventilation exhaust section 126s to ventilate these room for exchanging air, the system includes a heat exchanging unit 111 which heat-exchanges confluence air of the plurality of rooms and the bathroom 106 and outside air, and discharges the air to outside of the rooms, and the outside air after the outside air exchanges heat with the confluence air is introduced into the return zone 101. The present invention provides the air conditioning ventilation system which prevents lifetime of the system from being shortened by dew condensation of a heat exchanging element while recovering heat during bath time, which prevents mold in the bathroom 106 by ventilation of the bathroom 106 for 24 hours, and which can always realize comfortable clean air living at all times by flow of air-conditioning air and flow of ventilation air in an entire house while saving energy.

An air conditioning ventilation system comprising: air-intake portions 123 and exhaust portions 124 respectively provided in a plurality of rooms of a building; air-blowing sections 103 for sending wind to the air-intake portions 123; and a return zone 101 where air discharged from the exhaust portions 124 by the air-blowing sections 103 joins up; wherein the air-blowing sections 103 and an air conditioning section are placed in the return zone 101, a bathroom 106 and other rooms include ventilation intake portions 125 and ventilation exhaust section 126s to ventilate these room for exchanging air, the system includes a heat exchanging unit 111 which heat-exchanges confluence air of the plurality of rooms and the bathroom 106 and outside air, and discharges the air to outside of the rooms, and the outside air after the outside air exchanges heat with the confluence air is introduced into the return zone 101. The present invention provides the air conditioning ventilation system which prevents lifetime of the system from being shortened by dew condensation of a heat exchanging element while recovering heat during bath time, which prevents mold in the bathroom 106 by ventilation of the bathroom 106 for 24 hours, and which can always realize comfortable clean air living at all times by flow of air-conditioning air and flow of ventilation air in an entire house while saving energy.

An indoor live ammunition shooting range facility system includes a ventilation facility installed in an indoor live ammunition shooting range, and configured to ventilate air of the indoor live ammunition shooting range; a targeting device facility installed in the indoor live ammunition shooting range, and configured to provide a shooting target; a bulletproof facility installed to protect components exposed to an inside of the indoor live ammunition shooting range among components configuring the ventilation facility and the target device facility and to protect a wall surface of the indoor live ammunition shooting range; a bullet head recovery facility installed on a side opposite to a shooting position, and configured to recover a bullet head; and a control facility installed in the indoor live ammunition shooting range, and configured to control the ventilation facility, the target device facility and the bullet head recovery facility.

An indoor live ammunition shooting range facility system includes a ventilation facility installed in an indoor live ammunition shooting range, and configured to ventilate air of the indoor live ammunition shooting range; a targeting device facility installed in the indoor live ammunition shooting range, and configured to provide a shooting target; a bulletproof facility installed to protect components exposed to an inside of the indoor live ammunition shooting range among components configuring the ventilation facility and the target device facility and to protect a wall surface of the indoor live ammunition shooting range; a bullet head recovery facility installed on a side opposite to a shooting position, and configured to recover a bullet head; and a control facility installed in the indoor live ammunition shooting range, and configured to control the ventilation facility, the target device facility and the bullet head recovery facility.

An air conditioner unit includes a housing defining an outdoor portion and an indoor portion. A makeup air intake duct and a makeup air exhaust duct are disposed above the housing. The air conditioner unit also includes an air to air heat exchanger. The air to air heat exchanger includes a first inlet side attached to the makeup air intake duct, a second inlet side, a first outlet side, and a second outlet side attached to the makeup air exhaust duct. The air to air heat exchanger also includes one or more alternating top layers and bottom layers. The one or more top layers are in fluid communication with the first inlet side and the first outlet side, and the one or more bottom layers are in fluid communication with the second inlet side and the second outlet side.

An air conditioner unit includes a housing defining an outdoor portion and an indoor portion. A makeup air intake duct and a makeup air exhaust duct are disposed above the housing. The air conditioner unit also includes an air to air heat exchanger. The air to air heat exchanger includes a first inlet side attached to the makeup air intake duct, a second inlet side, a first outlet side, and a second outlet side attached to the makeup air exhaust duct. The air to air heat exchanger also includes one or more alternating top layers and bottom layers. The one or more top layers are in fluid communication with the first inlet side and the first outlet side, and the one or more bottom layers are in fluid communication with the second inlet side and the second outlet side.

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.

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.

A system for use with a manhole vault having an internal atmosphere, and, optionally, with a ventilation stack connecting the vault to an external atmosphere. The system includes a manhole cover, a ventilation pipe, and an air moving assembly. The cover has one or more through-holes extending between top and bottom surfaces. Each of the through-hole(s) is in fluid communication with the external atmosphere at the top surface. The pipe has a through-channel that extends between first and second openings. The first opening is positioned proximal to either an opening into the ventilation stack or at least one of the through-hole(s) at the bottom surface of the cover. The second opening is positioned in the interior of the vault. The device is configured to cause a portion of one of the interior and external atmospheres to flow through the through-channel toward a different one of the interior and external atmospheres.

A system for use with a manhole vault having an internal atmosphere, and, optionally, with a ventilation stack connecting the vault to an external atmosphere. The system includes a manhole cover, a ventilation pipe, and an air moving assembly. The cover has one or more through-holes extending between top and bottom surfaces. Each of the through-hole(s) is in fluid communication with the external atmosphere at the top surface. The pipe has a through-channel that extends between first and second openings. The first opening is positioned proximal to either an opening into the ventilation stack or at least one of the through-hole(s) at the bottom surface of the cover. The second opening is positioned in the interior of the vault. The device is configured to cause a portion of one of the interior and external atmospheres to flow through the through-channel toward a different one of the interior and external atmospheres.