An air-to-air heat exchanger, is provided that comprises a folded fin core formed from a continuous sheet of thermally conductive material that has been folded into alternating flat ridges and troughs; an insert overlay having an opening including two sets of uniform fingers, wherein each finger has a portion protruding into and essentially filling each trough on one surface of the folded fin core; an inset region between each finger portion and the end edges of each trough; a sealant within eac...

A heat exchanger with metallic or otherwise conductive exchanger plates disposed in substantial parallelism within the exchanger. In making the exchanger, the exchanger plates are arranged in substantial parallelism and edges joined together with clips which tie the plates together as a unit bundle. A layer comprising a mixture of hardenable resin and reinforcing material is prepared, and the unit bundle of plates is placed with a set of adjacent edges of the plates in said layer. When the resin...

An air to air heat exchange system for removing undesirable air from an enclosed structure. The heat exchanger provides for the removable of air containing pollutants, toxics gases and odors while providing for the recovery of heat from the exhaust air. The system utilizes a plurality of tubes within a larger tube so that air can flow freely over and around the smaller tubes thus providing for maximum heat transfer between the incoming air in the smaller tubes and the exhaust air in the larger t...

The present invention provides an air-conditioning air filter capable of cleaning and replacing only a filter element thereof for resources saving, refuse reduction, and cost reduction, and also preventing air leakage due to expanded deformation of a main box. The air-conditioning air filter has a plurality of filter bodies stored zigzag and removably in a main box, slide grooves formed in the upper and lower end surfaces of the filter frame, right and left side guard rails, which cover both sid...

A heat recouperator having a rotary wheel heat and moisture exchanger uses a random matrix media comprising a plurality of small diameter heat-retentive fibrous material which provides high thermal efficiency in exchanging heat and moisture between inlet and exhaust air streams.

The present invention comprises an air to air heat exchanger having a circular outer housing and a circular exhaust duct lying there within a long the longitudinal central access thereof. A plurality of cone shaped turbulators are secured to a rod supported within and extending along the longitudinal central axis of the exhaust. The outer housing is made of a heat insulating plastic, and the exhaust duct, turbulators and central rod are made of corrosion resistant metals such as aluminum or stai...

A separator for an air compressor to separate aqueous vapor and oil gas from an air stream in which air from a compressor is directed into a casing and onto a conically converging member disposed in a protective sleeve, the impingement effecting separation. The air then passes through a zig-zag shaped tube extending from the sleeve bottom and impinges on an L-shaped plate to effect more separation. The liquid accumulates in the bottom of the casing to which a transparent tube is connected for in...

An air heater is intended to be used in combination with an air cleaner comprising an air cleaner case, an air cleaner element dividing a space defined by the air cleaner case into a dust chamber on an upstream side with respect to the flowing direction of intake air and a clean chamber on a downstream side with respect to the flowing direction of intake air, and an intake duct connecting an air outlet pipe connected to the clean chamber to a throttle valve. The air heater comprises a heat excha...

An air controller for an air pump capable of simply regulating the air delivery rate of the air pump. In an air pump including an electromagnetic driving mechanism 11, 13, 14, a magnet 17 carried on the tip of an arm 16, and a diaphragm 18 connected to the intermediate portion of the arm, the magnet being reciprocated by an electromagnetic action exerted between the electromagnetic driving mechanism and the magnet, the intake and discharge action being effected by the expansion and contraction o...

An air diffuser for an air outlet. The air diffuser is mounted to a ceiling or wall surface and has an inner plate member with an opening communicating with the air outlet. A plurality of nozzles extend from the inner plate member and are positioned at predetermined intervals around the periphery of the inner plate member. An outer plate member is fastened to the inner plate member so as to sandwich the nozzles therebetween.