Abstract: A multimode ventilator mounted on a window unit dividing interior and exterior sides from each other has a frame assembly including a central partition on which a heat exchanger is rotatably supported. The frame assembly has first and second inner chambers divided from each other and first and second outer chambers divided from each other. Discharge and supply fans are disposed respectively in the first outer chamber and the second inner chamber. The frame assembly has a first opening for communication between the first inner chamber and the interior, a second opening for communication between the first outer chamber and the exterior, a third opening for communication between the second outer chamber and the exterior, and a fourth opening for communication between the second inner chamber and the interior.

Abstract: A bay window includes a frame assembly composed of an inner head, an inner transom, an inner sill, an outer head, an outer transom, an outer sill, a middle horizontal panel interconnecting the inner and outer transoms, and a lower horizontal panel interconnecting the inner and outer sills. A window unit is disposed between the outer head and the outer transom, and a housing or bay window cupboard is disposed between the middle and lower horizontal panels. A ventilator is accommodated in the housing and has an air inlet port communicating with air inlets defined in the inner sill and opening into a house interior space, and an air outlet port communicating with air outlets defined in the inner transom and opening into the house interior space.

Abstract: An air conditioning system for a room, in particular in buildings for cultivating plants or housing animals, provided with one or more heating/cooling elements of an open structure and one or more fans for circulating air along the heating/cooling elements. In the room vertical separation elements are realized, being not or hardly air permeable, such that the room is not divided in separate confined partial rooms and that in each case air can be displaced by one or more of the number of fans along one of the number of horizontal air circulation paths, determined by the positioning of the separating elements and the fans, in which air circulation paths in each case at least one heating/cooling element is provided.

Abstract: A combined wall and ventilation module for a building, comprises a wall unit having a thermally insulated frame and a thermally insulated wall element mounted in the frame on the exterior side thereof, and a ventilator supported by the frame on the interior side thereof and having a heat-exhanging element disposed therein for effecting a heat exchange between fresh atmospheric air and consumed room air. The frame has within it at least one thermally insulated internal intake passage communicating at opposite ends with the ventilator and the outside atmosphere for introducing therethrough the fresh atmospheric air into the ventilator, and at least one thermally insulated internal discharge passage communicating at opposite ends with the ventilator and the outside atmosphere for discharging therethrough the consumed room air into the outside atmosphere. Each of the intake and discharge passages is covered with a layer of thermally insulating material extending over the inner peripheral surface of the passage.

Abstract: This invention is a heat storage system utilizing pressure treated, high density fibrous products to capture and hold heat, particularly in passive solar applications. This heat storage means is preferably in the form of pressure treated logs or timbers which, once heated, will slowly release this heat over an extended period of time.

Abstract: A heat exchanger of a construction having a plurality of plates disposed in mutual confrontation at a predetermined spaced interval among them to separate two fluids to be subjected to heat-exchange; a fin disposed in the space interval among the mutually opposed plates to form a plurality of parallel flow paths for controlling flow of the two fluids in the spaced interval, the spaced interval formed by the plates being in a plurality of stacked layers, and the portion where the fin is present and the empty space where no fin is present being so disposed in the plurality of space intervals in layer form that they may be staggered in the direction of stacking the plates; and a control member provided in each of the space intervals in layer form to separate and alternately lead into each space interval the primary fluid and the secondary fluid so as to effect the heat exchanging operation between the primary fluid and the secondary fluid in the course of their passage through the spaced interval in layer, while

Abstract: A heat exchanger for exchanging heat between incoming cold fresh air and outgoing warm exhaust air. The heat exchanger is constructed of a number of relatively long flexible plastic tubes supported within a flexible plastic outer housing. The inner tubes are supported in spaced-apart relationship within the outer housing. A manifold on each end of the tubes in sealing engagement with the inner tubes and with the housing so that air can be forced through the inner tubes in one direction and through the housing in the other direction. The diameters of the inner tubes and outer housing being large enough so that blockage by ice or frost is minimized.

Abstract: A ventilation system comprising a heat-exchanger rotor mounted in a four-chamber housing supported on a panel or window unit, and a preliminary heat-exchange unit mounted at an air-intake portion of the housing. The window unit has a frame composed of a plurality of hollow structural sections defining a heat-medium passageway for circulation of heat medium such as hot water or cold water therethrough. The preliminary heat-exchanger unit has a radiation/endothermy tube connected to the heat-medium passageway for fluid communication therewith. The radiation/endothermy tube serves to prewarm or precool air (introduced from the exterior) before the latter passes through the heat-exchanger rotor.

Abstract: A ventilation heat recovery system is mounted in a livestock building or the like. The system includes a counterflow shell and tube heat exchanger with an outer sleeve axially surrounding the shell along a substantial longitudinal portion thereof. Air is drawn from the ambient atmosphere into the shell for heat-exchanging flow counter to exhaust air that is drawn from the building atmosphere and forced through the exchanger tubes for exhausting to the ambient atmosphere. An annular-shaped distribution channel is formed between the outer sleeve and the shell, and the sleeve has a plurality of distribution orifices therealong for distributing incoming air to the building atmosphere. The channel is in flow communication with the shell through a transition zone defined between the end of the shell and a transition manifold which supports the tubes. Alternatively, the shell is in flow communication with a remote distribution duct having a plurality of distribution orifices.

Abstract: Apparatus for exchanging air within an enclosure with outside air while subjecting air within the enclosure to gas filtration and/or electronic air cleaning. The apparatus includes a two-position valve to provide an intake cycle and an exhaust cycle; during both cycles the air treatment means is operative on air within the enclosure.

Abstract: A heat exchanging system including a heat exchanger element formed by stacking, in predetermined spaced relation, a plurality of thermally conductive partition plates, primary and secondary air streams being allowed to alternately flow through laminar spaces between the partition plates, and heat exchange being effected between the primary and secondary air streams while the primary and secondary air streams are cyclically switched. In accordance with different embodiments, the partition plates may be impermeable to moisture and be capable of accumulating moisture, (b) be moisture transmissive and hygroscopic, or (c) be impermeable to moisture and have no capability of accumulating moisture.

Abstract: A heat exchange apparatus includes a core mounted within a casing and two fans arranged to draw air from the exterior of a building through the core in a first path and to draw air from the interior of the building through the core in a second path. The core is made up from a plurality of tubular cells each formed from a single folded sheet of aluminum and having a slot shaped cross section. The short sides of the slot are arranged to face the inlet of cold exterior air so that it impinges upon the outer surface of the short side. The fan drawing the warm air is arranged to direct air onto the other surface of the short side so that the short side and the surrounding portions of the long sides act as an effective heat exchange surface free from the seam of the tubular core which is arranged adjacent opposite the short side. A differentially perforated baffle plate spreads the cold air over core such that more cold air is directed to the warm end of the core.

Abstract: A system for space heating for a building employing structural elements of the building as heating conduits. Girder pairs are employed as manifold conduits and joist pairs are employed as distribution conduits for the present system. The crawl space of the building is used for the return air and becomes a plenum therefor.

Abstract: A heat exchanger apparatus includes a cylindrical-shaped heat exchanger formed by alternately laminating first and second elements in the circumferential direction of the cylindrical-shaped heat exchanger. The cylindrical-shaped heat exchanger is rotated to carry out the function of the conventional regenerative rotary type total heat exchanger. In addition, the first and second elements are also allowed to effect a heat exchange or total heat exchange operation. The cylindrical-shaped heat exchanger is either hollow or solid, which provides many variations in arrangement of air ducts for primary and secondary air flows. Further, a partition interposed between the first and second elements has variation in property: permeable to water vapor; non-permeable to water vapor as well as non-hygroscopic; and so forth. The first and second elements exchange heat with each other in a total heat exchange operation mode and a sensible heat exchange operation mode.

Abstract: A ventilation system comprises a window unit with a rectangular window frame having a hollow interior constituting a flow passage for air, and a ventilator held in fluid communication with the hollow interior of the window frame. The ventilator has a built-in heat exchanging element which effects a heat exchange between fresh air and foul air during operation. The window frame has an integral pipeline disposed in the hollow interior of the window frame at the interior side of the window unit for the passage therethrough of a heat-transferring medium. The heat-transferring medium flowing through the pipeline gives up heat to, or extracts heat from the air channeled through the flow passage in the window frame prior to or after the air's being introduced into the ventilator. Thus, the efficiency of heat exchange is considerably increased.

Abstract: A casing of a blower of the improved construction easy to assemble and low in noise level, and a ventilating fan utilizing such casing. The casing of the blower includes a frame, and spiral cases arranged in the frame and having suitable elasticity with respect to the frame, the spiral cases having external dimensions slightly larger than the internal dimensions of the frame in natural condition, so that the spiral cases can be securedly held in place in the frame by the elasticity of the spiral cases themselves.

Abstract: A room ventilator structured to define therethrough both a primary airstream and a secondary airstream arranged in heat exchange relationship with each other. A heat exchanger located to have both said primary and secondary airstreams flow therethrough is structured to divide both of said streams into numerous smaller partial airstreams with walls made of high thermal conductivity intermediate the partial airstreams to enhance the heat exchange capacity between the streams. The heat exchanger is designed so that it may be installed in the ventilator in a plurality of reversed positions without impairing its function.

Abstract: Heat exchanger which is a draw-through, self-contained, central ducted system. Heat exchanger can be used with a furnace or installed separately in any system. Supply and exhaust direct-drive blowers provide air flow against high resistance laminar, straight-thru/non-turbulent air flow of true cross-flow sized elements providing separation of air flow for side-by-side air flow with counter-flow heat transfer. The system is heavy duty, aluminum, cross flow, double-pass heat exchanger. The system includes drain pans and front and back access panels which provides easy access to the heat exchanger for cleaning as required. The electrical parts are on a slide out tray for easy servicing. The heat exchanger can be used in residential, commercial, or industrial environments.

Abstract: A ventilator intended for placing in an outer wall has a double-acting axial-flow fan with an inner and an outer impeller blade ring disposed such that the blade rings are each in register with a coaxial channel in a duct placed in a through-opening in the wall. A reversing means is connected to the impeller motor for changing the direction of rotation thereof so that it alternatingly rotates in one or the other direction. A regenerator means is inserted in the channels, the means both absorbing heat and distributing moisture within itself.

Abstract: An energy recovery ventilator adapted to be mounted on a roof and adapted to be connected to the outlet of an exhaust air duct of a building ventilation system and the inlet of an air supply duct of a building ventilation system. The energy recovery ventilator includes a housing having an exhaust air chamber and a supply air chamber separated by a divider wall. A circular heat transfer wheel is position in the housing, a portion of the wheel being housed in the exhaust air chamber and a second portion of the wheel being housed in the supply air chamber, and the heat transfer wheel is caused to rotate about a central axis. An exhaust fan is housed in the exhaust air chamber and causes exhaust air to be pulled through the exhaust air duct and the heat transfer wheel and to be exhausted from the housing.

Abstract: A heat exchange apparatus comprises a plastics outer casing for mounting in the exterior wall of a building such that it extends outwardly of the building wall to define an inlet and an outlet spaced from the wall. A heat exchange block is mounted within the outer casing and defines two paths of air therethrough mutually at right angles and both inclined to the horizontal. The block is formed of a plurality of polypropylene extruded sheets (preferably Coroplast) which comprises two thin sheets supported by a plurality of cells passing along the sheets. The Coroplast sheets are separated by spaces to form elongated air channels. The block is supported within the outer casing on resilient mountings and is arranged such that the air exhausted from the building passes through the elongated channels. A fan drawing air into the building from the exterior through the heat exchange block includes a nozzle for directing the air into the building away from the outlet.

Abstract: A heat exchange apparatus includes a core mounted within a casing and two fans arranged to draw air from the exterior of a building through the core in a first path and to draw air from the interior of the building through the core in a second path. The core is made up from a plurality of tubular cells each formed from a single folded sheet of aluminum and having a slot shaped cross-section. The short sides of the slot are arranged to face the inlet of cold exterior air so that it impinges upon the outer surface of the short side. The fan drawing the warm air is arranged to direct air onto the other surface of the short side so that the short side and the surrounding portions of the long sides act as an effective heat exchange surface free from the seam of the tubular core which is arranged adjacent opposite the short side. A differentially perforated baffle plate spreads the cold air over core such that more cold air is directed to the warm end of the core.

Abstract: A regenerative room air exchanger for use in a house has a first vertically disposed conduit through which room air flows to be exhausted, the first conduit including a first set of vertically disposed channels, a second vertically disposed conduit through which fresh air flows to the room, the second conduit including a second set of vertically disposed channels with the first and second sets of channels being interdigitated and in counterflow heat exchange relationship with each other, and a jacket surrounding and spaced from the interdigitated channels to form a third vertically disposed conduit between the jacket and the channels, the third conduit being in fluid communication with the first conduit. An exhaust blower is in fluid communication with the first conduit and an inlet blower is in fluid communication with the second conduit.

Abstract: A ventilating device for an automotive vehicle mounted in a rear portion of the vehicle comprises an atmospheric air passageway for introducing atmospheric air from the outside of the vehicle into a vehicle compartment, and an internal air passageway provided in a manner to cross the atmospheric air passageway for leading the air in the rear portion of the vehicle compartment to the outside of the vehicle. The atmospheric air passageway is arranged to cause the atmospheric air to be blown from the rear to the front of the vehicle compartment, so as to improve ventilation performance in the rear portion of the compartment. Further, a total heat exchanger is mounted at the crossing portion of the two passageways for effecting exchange of both sensible heat and latent heat between the atmospheric air flowing through the atmospheric air passageway and the air flowing through the internal air passageway.

Abstract: A means for recovering the heat of a room space and for ventilation, consisting of at least two heat accumulators, to which the outgoing air delivers its heat and from which the incoming air takes up heat, and each of which has one end connected to the room space outflow duct and inflow duct, in which ducts the direction of flow is always the same under control by a flap. The opposite ends of the heat accumulators have been connected to the fresh air intake duct and to the outgoing exit duct, in which ducts the direction of flow is always the same under control by another flap.

Abstract: A vent door control apparatus for use in an air conditioner that permits both manual and automatic positioning of the vent door. A series of push button function switches are arranged to move in contact with a series of cams to automatically unlatch the door when certain functions are selected. At least some of the cams are programable to permit the user to select which functions will be carried out without adding outside air to the conditioned air. The vent door can be further manually operated to open the door anytime an unprogramed function is selected.

Abstract: Heat exchangers are placed in heat exchange relationship with each of an incoming and exhaust airstream and connected by a supply and return conduit. A pump is placed in the conduit from a reservoir or receiver adjacent the cooler of the two airstreams to the warmer of the two airstreams.

Abstract: A system for heating, cooling, and ventilating a structure having exterior zones adjacent exterior walls and interior zones adjacent the exterior zones and opposite the exterior walls. The system includes for each pair of exterior and interior zones a first terminal unit for moving air from the interior zone to the exterior zone and a second terminal unit for moving air from the exterior zone to the interior zone. The first unit includes structure for selectively heating and cooling the air moved. The second unit includes structure for selectively cooling the air moved. The terminal units further include a casing defining an inlet and an outlet, fan structure for moving recirculation air through the casing from the inlet to the outlet, and structure for introducing primary air into the casing upstream of the fan structure so that primary air is induced into the recirculation air. Also disclosed is a method of heating, cooling, and ventilating a structure using the system disclosed.

Abstract: A device for air control for an air ventilated room is provided with an outer pane on its weather side and at its room side with an inner pane. An air channel is formed between the panes for the exhausted room air and a fresh air channel with a weatherside fresh air suction opening and a room side fresh air discharge opening is provided in connection with the air channel. The air channel is connected to a weather side exhaust air opening on its downflow side and is also in connection with a heat exchanger disposed in front of the weather side exhaust air opening through which the exhaust air can transmit heat to the fresh air flowing through the fresh air channel. The air control device is a compact structural unit and is exclusively disposed on the inside of the room. The compact structural unit comprises a separate air control box and a ventilator box.

Abstract: An air circulation apparatus provided with a plurality of outlet nozzles separating the air flowing from the air circulation apparatus into a plurality of diverging air jet streams. The air circulation apparatus may take the form of a recirculation blower, an air space heater, or a room air conditioner.

Abstract: A heat exchanger in combination with two duct system for bringing in relatively cold outside air into an enclosure while exhausting relatively warm room air from the enclosure. The heat exchanger is positioned so as to recover heat from the exhaust air into the incoming cold fresh air. A valving system switches the incoming cold air with the warm exhaust air in the flow paths of the heat exchanger. This solves the problem of moisture from the exhaust air condensing on the walls of the ducting system for the exhaust air.

Abstract: A casing for a building having an absorbing and heat exchange layer, which on operation for heating the building, has the function of stopping the loss of heat from the inside to the outside and, on cooling operation, of stopping the transfer of heat from the outside to the inside. A glass-clear or opaque outer casing may be placed spaced from the absorbing and heat exchange layer.

Abstract: Air condition control for buildings, having a roof structure of roof trusses relatively widely spaced, between which self-supporting roof plates are laid and covered by a covering layer so that a gap is formed between the covering layer and the roof plates. Air is passed in one or the other direction through a ventilation opening in the roof, through the air gap (13) and through ducts (9) in the roof plates. Air sucked in from the atmosphere through the ventilation opening passes through the ducts to an air conditioning unit (5) and to a distribution device (6) to maintain a suitable temperature in the building. Air flow can also be inverted by being supplied in the form of outdoor air to the air conditioning unit (5) and after its passage through the building being conducted away into the atmosphere through the roof structure by the ventilation opening.

Abstract: A heat pipe or thermal siphon having an internal surface shaped to promote thin film evaporation therefrom. The internal surface consists of a number of equi-spaced longitudinally extending ribs which define grooves between them, and the ribs may be of rectangular, semicircular, or triangular form. In use the bulk of the condensate in the thermal siphon is pulled by surface tension effects into the corners of the grooves, and leaves a thin film of the condensate between the rivulets. An assembly of heat transfer fins is attached externally one at each side of the heat pipe or thermal siphon for air flow therethrough transverse to the length of the heat pipe or thermal siphon, and a number of such assemblies are clustered together with a silicone rubber sealing strip between them at about the center of each assembly to divide the cluster into two sealingly separated portions.

Abstract: Solar collectors whose absorbers are made of a conventional building material form the outer surface of the roof and wall of a building. Air flows behind the absorbers and heat is transferred to the air by expanded metal conductors which extend from adjacent the outside surfaces of the absorbers into the flow passages. Heat from the collectors is stored in a system including a cold tank of liquid, a heat tank of liquid at a higher temperature, and a hot water tank of liquid at an even higher temperature. A heat pump may transfer heat from the cold tank to the heat tank and from the heat tank to the hot water tank. Cold and heat exchangers are provided in each tank for receiving heated air from the collectors and transferring heat therefrom to the liquid in the tank; and the exchangers in the cold and heat tanks transfer heat between the liquid in the tanks and air from or to the building. Air flows to and from the collectors, tanks, and buildings in ducts formed by the floor and roof beams and wall slabs.

Abstract: A ventilation system for a livestock house includes a heat exchanger through which both warm moist air from the interior living area of the house and fresh make-up air from the outside are passed, so that heat will transfer from the former to the latter. Prior to entering the heat exchanger, the warm moist air passes through a filter device that removes particulates from it, so that the particulates do not combine with condensation in the heat exchanger to block the heat exchanger. The fresh air, after being warmed in the heat exchanger passes into an elongated distribution plenum located slightly below the ceiling of the house, and this plenum contains apertures which direct the fresh air horizontally into the living area. Moreover, the upper surface of the plenum is located directly below an elongated opening in the ceiling.

Abstract: This invention relates to an improvement in a heat exchanger of the type using heat pipes which permits reduction in size of the heat exchanger and enhancement in heat exchange efficiency and more particularly to a cylindrical heat exchanger principally comprising a cylindrical or polygonal tubular casing provided with openings in the middle parts of its upper and lower sides and in its circumferential side, a transverse partition plate which divides the inside of the casing into upper and lower parts and a group of vertical heat pipes arranged to pierce through the peripheral portion of the partition plate in an annular plan configuration as a whole.

Abstract: A high-temperature gas exit in the form of a pipe bundle from a pre-stressed cast or concrete pressure container with a first cooling system comprising a sealing skin having cooling pipes arranged on the outside thereof and with a thermal insulation layer arranged on the inner side of the sealing skin. Between the first cooling system and the pipe bundle there is provided a second cooling system comprising a hollow double skin with cooling passages, the first cooling system and the second cooling system being independent of each other.

Abstract: A uni-directional valve arrangement placed in a predetermined location between a habitable enclosure and a heating or cooling system which is exposed to outdoor temperatures prevents air of undesirable temperature in the system from passing into the enclosure by gravity flow.

Abstract: An L-shaped, vertical partition within an air conditioner housing divides off a condenser compartment which has a supplementary air inlet and an air corridor therefrom. One panel of this partition mounts, at its side within the air corridor, the motor which drives the evaporator blower. An access door, opposite to the partition panel, permits the entire assembly to be removed for servicing and to permit access to the other parts. Where the blower system is to be used alternately with a resistance heater coil, this blower motor may be equipped with its own cooling fan.

Abstract: A compact indoor environmental control system which has cooling, heating, and ventilation components mounted and positioned to provide a slim design for in-the-wall installation. A cabinet is provided with cooling and heating components mounted to leave plenums at opposite ends of the cabinet so that air outlets can be selected on any one of five sides of the plenums. The heating, cooling and control sections are of modular design to permit full accessibility for maintenance, repair or replacement. A variety of configurations for intake and exhaust of inside and outside air are possible because of the versatility provided by the modular construction.

Abstract: A heat transfer block has a center core of substantially equally sized stones. The stones are grouted together with voids in between. Upper and lower panels are grouted to the center core. At least one of the panels is a heat transmitting panel. A plurality of heat transfer blocks may be laid end to end to form a heat transfer duct. A building air heating system may comprise a plurality of heat transfer blocks connected together, a means of circulating air through the blocks, and a heat reservoir connected to the outer surface of said heat transfer blocks.

Abstract: A vessel, containing a culture medium or laboratory ware, is brought rapidly to sterilization temperature by circulating a mixture of steam and superheated water through a closely spaced jacket. The mixture of steam and superheated water is generated in a portion of the sterilizer which is exterior to the jacket and said mixture is circulated without the use of a pump. The sterilizer can be made in sizes small enough for bench-top operation and the sterilization procedure can be carried out with automatic control.