Abstract: A multi-compartment bed radial flow adsorber capable of realizing large telescopic deformation mainly comprises an adsorber body, the adsorber body consists of an upper seal head, a barrel, a lower seal head and a pressed shell connected with an upper connecting pipe and a lower connecting pipe, the upper seal head and the lower seal head of the shell are each provided with an upper gas inlet and outlet pipe and a lower gas inlet and outlet pipe, a supporting seat is arranged at the bottom in the shell, an adsorption barrel is arranged above the supporting seat and consists of a plurality of concentric barrels with different diameters, a plurality of annular spaces are formed by the concentric barrels with different diameters, different types of adsorbents can be filled in the annular spaces, and the adsorption barrel is composed of a pore plate or a grid.

Abstract: An HVAC system includes an air handling unit (AHU), a heat recovery device, and a controller. The controller is configured to determine an average heating or cooling demand of one or more zones served by the AHU, determine if a heating or cooling capacity is available at the heat recovery device, where the capacity available at the heat recovery device is a heating or cooling capacity to heat or cool the air from an outdoor environment with air extracted from the one or more zones served by the AHU, determine a heat recovery command setpoint based on the determined average heating or cooling demand and the determined available heating or cooling capacity, and send a signal indicative of the determined heat recovery command setpoint to at least one of the AHU and the heat recovery device.

Abstract: Improvements in a filter where the filter self-expands based upon increased pressure or vacuum in the filtering stream. The expandable filter is adaptable to filtering a wide variety of media including air used in HVAC units, gases that are used to filter impurities out of gases and for industrial applications. The expandable filter to maintain a constant pressure or vacuum in the plenum or filter. The filter self-expands as the pressure or vacuum increases and pushes, pulls or draws the filter into an elongated or heightened configuration. As the filter expands new filter material is exposed that was not previously exposed for filtering. Expansion doubles, triples, or further increases the filter collection surface area. The filter does not rely upon gravity and expands based upon the increase of pressure or vacuum in the plenum the filter can be arranged in a vertical or horizontal orientation.

Abstract: An adsorption dryer (20) for processing gases, in particular compressed air, having a control head (24) with valves (28), pipe connections (26) and means for receiving cartridges, and at least two cartridges (22) which can be connected to the control head (24) and are filled with adsorption means and to which a stream of fluid can be supplied, as required, via the control head (24). The cartridges (22) each have a cover (30), a cartridge casing (32), a base (34) and a central pipe (36) which extends through the cover (30) into an interior space (46) of the cartridge (22). The adsorption dryer (20) is characterized in that the cover (30), the cartridge casing (32) and the base (34) of the cartridges (22) can each be secured in place with respect to one another via the central pipe (36), the central pipe (36) in each case projects out of the cartridge (22) and serves as a connecting means for the control head (24), and the cartridge (22) itself is of compression-resistant design.

Abstract: A fluid filter having a frame and filter media supported by the frame through which a fluid to be treated is directed. The frame has at least first and second frame assemblies that are reconfigurable to place the filter selectively in: a) a first predetermined operative state; and b) a second predetermined operative state. The frame cooperates with the filter media so that the filter media: i) extends over a first intake area with the filter in the first predetermined operative state; and ii) extends over a second intake area that is different than the first intake area with the filter in the second predetermined operative state.

Abstract: The present invention relates to the field of adsorption-separation technology, and more particularly, to an adsorption-separation device. The device includes a base component, a top cover component and adsorption pipes arranged between the base component and the top cover component. One end of the adsorption pipe is detachably connected with the base component and, the other end of the adsorption pipe is detachably connected with the top cover component, a locking component used for compressing the adsorption pipes is arranged between the base component and the top cover component. The adsorption pipes are detachably inserted between the base component and the top cover component, the base component and the top cover component 200 are connected by the locking component to be convenient for assembly and disassembly.

Abstract: Methods of making a filter apparatus includes the step of creating a filter stack by axially spacing the porous ceramic plates from one another with a plurality of compliant spacers. In another example, the method includes the step of firing the first filter stack to sinter bond the first plurality of porous ceramic plates together with a first spacing element. In another example, the plurality of plates comprise a composition including catalyst particles and a binder material and the plates are fired to form porous plates without sintering a substantial amount of the catalyst particles. Methods of fabricating a porous ceramic article also include providing a porous substrate with a first material composition including mullite and infiltrating the pores of the substrate with a second material composition including cordierite. The method further includes the step of firing the first composition and the second composition to form the porous ceramic article.

Abstract: Improvements in a filter where the filter self-expands based upon increased pressure or vacuum in the filtering stream. The expandable filter is adaptable to filtering a wide variety of media including air used in HVAC units, gases that are used to filter impurities out of gases and for industrial applications. The expandable filter to maintain a constant pressure or vacuum in the plenum or filter. The filter self-expands as the pressure or vacuum increases and pushes, pulls or draws the filter into an elongated or heightened configuration. As the filter expands new filter material is exposed that was not previously exposed for filtering. Expansion doubles, triples, or further increases the filter collection surface area. The filter does not rely upon gravity and expands based upon the increase of pressure or vacuum in the plenum the filter can be arranged in a vertical or horizontal orientation.

Abstract: The invention relates to an air filter device (1) having a filter housing comprising a filter housing cup (2) and a filter housing cover, in which filter housing at least one filter element (3) is arranged. Pertinent to the invention is that a flow-directing element (7) is provided that is configured in such a manner that it is ensured that the filter element (3) is flowed through uniformly.

Abstract: A cyclonic chamber for use in air filtration devices. The chamber includes an apex opposite a base with sidewalls extending therebetween. The cyclonic chamber is preferably parabolic in cross-section or tubular with a hemi-spherical cap. The base contains an outflow passage and a conical filter extending therefrom. An inflow passage is provided proximate the apex. The inflow and outflow passages are parallel but not aligned. The chamber interior is smooth. The smooth interior and offset relationship of the inflow and outflow passages causes air to take a cyclonic path between the inflow passage and the filter. Debris in the airstream is pushed outward—away from the filter—by centripetal force. Eddies form proximate the base. Debris escapes the airstream there, where it either remains or, depending upon the chamber's orientation relative to gravity, falls back into the airflow where it is again directed away from the filter.

Abstract: A filter includes a filter chamber of adjustable volume. The filter chamber encloses a compactable filter medium through which fluid to be filtered may flow. The filter medium includes a plurality of filter particles. A filter particle has an initial shape and is deformable upon application of a deforming force, being capable of substantially regaining its initial shape upon removal of the deforming force. The porosity of the filter medium is adjustable by adjusting the volume of the filter chamber so as adjust the compaction of the filter medium.

Abstract: A filter comprises first and second housing components (1, 3) slidable relative to each other and defining a filter chamber within the housing components. An inlet (7) for a fluid to be filtered is provided in at least one of the first and second housing components, and a filter element (11, 13) is provided within the filter chamber. The filter element is adapted to provide a space (15) between the inlet and the filter element for the accumulation of solid material in the fluid to be filtered, whereby sliding movement between the first and second housing components causes the volume of the filter chamber to vary.

Abstract: An improved air filter having a frame that permits collapse and compression of the entire filter to save costs associated with transportation and for other advantageous reasons. The ends of the filter frame open to permit collapse of the frame to reduce the volume thereof. The filter frame is made of frame members at opposing frame ends, and each frame member has web panels that open for collapse of the frame, and close for construction of the useful frame. The web panels have legs on opposite lateral edges to form a channel in which filtration media is inserted, and four frame members are attached at opposing ends to form a rectangular frame. The web panels open by removing a temporary fastener, such as adhesive, or by other means.

Abstract: A filter is made by the folding of a filter media to pleats after the application of strings of glue thereon and the glue serves as distance elements and fixing for the filter media. The glue contains an expandable filler, that when heated expands to a larger size that is then permanent. When the glue has set the filter is heated and the filler expands and expands the filter pleats.

Abstract: An expandable desiccant element for removal of moisture from an air stream. Such expandable desiccant element includes at least one first expandable containment section capable of expanding a first predetermined amount, at least one second expandable containment section capable of expanding a second predetermined amount which is greater than the first predetermined amount connected to the first expandable containment section. Such at least one first expandable containment section and at least one second expandable containment section forming a predetermined shape.

Abstract: A fuel vapor storage canister is provided. The canister includes a vapor storage chamber of variable volume, a partition, vapor adsorbing material, and a volume compensator. The partition is movable within the canister and partially defines the vapor storage chamber. The vapor adsorbing material is located in the vapor storage chamber. The volume compensator includes a spring having at least three legs that are deflected by and exert pressure against the movable partition to control the volume of the vapor storage chamber. In one embodiment, the legs of the spring may be evenly spaced to exert a balanced pressure. The spring may include two pairs of opposing legs, where the spring rate between the pairs of legs may vary. The spring may be comprised of two angularly offset band springs and may be formed from a unitary member.

Abstract: The invention provides a filter apparatus for removing air entrained particles comprising a collapsible filter media. The filter media has a periphery. A continuous frame extends around and attaches to the periphery of the filter media whereby the filter media and attached frame together can be lengthwise collapsed.

Abstract: A pleated filter medium arrangement including a sheet of pleated porous filtering media nestingly engaged between adjacent pleats by a pleated sheet of thermobondable plastic screening with preselected facing opposite portions of the screening being heat bonded together.

Abstract: A canister for containing a bed of particles, for example sorbent particles, which includes a loading device for applying a predetermined compressive load to the bed of particles and an adjusting device for automatically adjusting the loading device to maintain substantially the predetermined compressive load. The adjusting device functions in conjunction with the pressure of an operating fluid in the canister.

Abstract: A respirator filter with a pot-shaped filter housing, with a flange at the edge of the filter housing, with a flow channel passing through the filter housing with a sealing surface, with a housing cover and with a filter element located in the filter housing is to be optimized in terms of simpler manufacture. To accomplish this task, with the housing cover located at a spaced location from and in parallel to the filter housing, a distance a between the sealing surface and the corresponding part of the housing cover, on the one hand, and a distance (b) between the flange and an outer edge of the housing cover, on the other hand, are dimensioned such that distance (a) is smaller than distance (b), so that when the housing cover is being placed on the filter housing, it comes into contact first with the sealing surface and then with the flange, while the housing cover warps.

Abstract: An apparatus for removing contaminants from a liquid comprises a casing and a tubular filter dividing the casing into two compartments. The tubular filter is formed of fibers attached at each end to end supports which are movable axially relative to one another and rotable relative to one another about the longitudinal axis of the filter. A helical spring is disposed within the tubular filter and is so dimensioned that it does not close when the end supports are in their closest operational position. The spring resists inward movement of the fibers when the end supports are moved axially towards each other and rotated to twist the fiber, thereby preventing the compartment defined by the interior of the tubular filter from tending to close.

Abstract: A filter insert having a block-shaped configuration comprises a planar material that is permeable to a medium and is arranged as a plurality of pleats having pleat walls. Each pleat wall has opposing first and second edges. The pleat walls are arranged in a zigzag pattern presenting first and second edge sections wherein a medium to be filtered passes through the filter insert in a direction from the first edge section toward the second edge section. The pleat walls have embossed projections which are parallel to one another and project with a height in a direction toward an adjacent pleat wall. The projections have length in a direction from one edge to an opposite edge of a respective pleat wall and a width perpendicular to the length. The width is essentially constant over the length and the length exceeds the width. Adjacent projections of adjacent pleat walls contact one another for securing, spacing and stiffening the pleats and the filter insert.

Abstract: The adsorber of the type comprising annular superposed beds, contains in its upper zone, a device to maintain and compress the upper bed, a flexible impervious membrane which separates the lower bed from the upper bed in its intermediate zone, and a cylindrical wall defining an internal annular duct for the lower bed in its lower zone. Application for example to the production of oxygen.

Abstract: Disposable air filter includes a filter element formed from a stacked plurality of annular disks. The disks are formed from a sorptive material and expand upon absorption of oil or water droplets. The disks are slightly compressed by a movable baffle. The baffle floats upon a stream of air entering the filter and directs the air radially through the filter element. The air flows between and through the disks with a resulting low pressure drop across the filter. As the disks expand, the baffle shifts axially within a filter housing to maintain the pressure drop across the filter element.

Abstract: An adsorber having an upright longitudinal extent includes two perforated parallel panels extending within the vessel formed therein and spaced apart defining an adsorbent mass chamber. The adsorbent mass is in two longitudinal parts having a first part of fine particles and a second part of larger particles. The gas to be treated is circulated horizontally between the two perforated panels. This device allows the treatment cycle to be less than 60 seconds with the same or better performance. This adsorber and process are preferably used for the separation of oxygen from air.

Abstract: An enzyme-fixed bioreactor, including a reaction column, enzyme-fixed catalyst particles uniformly and densely filled in the reaction column, the catalyst particles being composed of carrier sepiolite particles consisting essentially of sepiolite and an enzyme carried on the surface of the carrier sepiolite particles. The bioreactor has stable heat resistant and chemical properties, high productivity, and is economically superior to prior art, without fear of destruction of the catalyst, short path, and clogging in the reaction column.

Abstract: A vapor storage canister has an improved carbon bed loading pressure maintenance mechanism. A pressure plate is driven up indirectly, through a threaded shaft turned by a radially wound spiral spring, rather than by an axially compressed helical spring. This takes better advantage of the space available between the carbon bed and the lower end of the canister.

Abstract: A gas treatment or separation apparatus includes a vessel (2) containing a bed (18) of particulate material. Within the bed (18) there is located a plurality of distensible hollow members (30) each capable of being placed in communication with a source of fluid under pressure. The members (30) restrain movement of the particulate material.

Abstract: To simplify the assembly of filter modules 10, the supporting tube 1 which carries the filter cells 9 is constituted in two pieces. Both the upper tube piece 4 and the lower tube piece 5 contain locking elements 7 which are received in correspondingly large recesses 8, thereby making possible a safe interlock as well as a relative axial movability of the tube pieces 4 and 5.

Abstract: A filter apparatus for filtering chemical gases and odors from a fluid is disclosed. The filter apparatus includes a plurality of filter cartridges which each include a filter material, and a housing which fixes the filter cartridges relative to each other such that the filter cartridges form a W-shape with each filter cartridge forming a leg of the W-shape, to maximize the filtering efficiency of the filter apparatus while minimizing the pressure drop across the filter apparatus. A table top air cleaner is also disclosed,and includes a housing having an inlet opening and an outlet opening, an arrangement for drawing air through the inlet opening and for forcing air out of the outlet opening, and a plurality of filter cartridges which each include a filter material and which are fixed inside the housing relative to each other such that they form a W-shape.

Abstract: An air filter comprising a sheet of filter material folded in a zig-zag configuration. A hardenable material is dispensed in a flowable state onto the sheet. The hardenable material has a varying thickness such that upon hardening, it holds the folds of the sheet apart in a selected orientation. The hardenable material may comprise glue to also secure the folds together. An air penetrable sheet can be secured to the fold edges at one or both sides of the filter.

Abstract: A filter cartridge has a support structure consisting of at least one tube provided with openings over its entire length and having at least one axially yieldable annular zone to permit axial movement to compensate for axial stresses and prevent damage to the filter material supported by the structure.

Abstract: There is disclosed a fluid filtration element having a porous core cylinder, a sectionally thick filtration cylinder fitted around the core cylinder, and end plates secured to the end surfaces of filtration cylinder. Highly densified portions are formed at the filtration cylinder ends to which the end plates are press-fitted, thereby hindering the fluid permeation. Sectionally thin protrusions erected on the end plate surfaces are cut into the highly densified portions.

Abstract: A valve assembly (B) cycles compressed gas from a compressor (A) to a pair of molecular sieve beds (C) to perform a pressure swing adsorption gas separation cycle. Each bed includes a peripheral outer wall (20) and has a tubular member (30) extending down a central axis thereof. An extensible sleeve (26) surrounds the central tube and is in fluid communication therewith by way of an aperture (32). A fluid amplifier (F) amplifies fluid pressure from system gases, particularly the gases from the compressor, and uses the amplified pressure to expand the extensible sleeve. Particles (22) of zeolite material are inhibited from becoming fluidized and moving with fluid flows by the clamping pressure between the extensible sleeve and the peripheral wall of the bed.

Abstract: A recirculating fiber filter (1) and method is provided for removing particulates from moving fluid streams. High aspect ratio fibers (2) are used which readily nest with each other to form the high voidage fiber filter bed. In the method, fibers are continuously removed from the bottom of the bed regenerated to remove particulates and recycled back to the top of the bed and distributed thereon. Dirty fluid is passed from the top to the bottom of the filter. Dendrites of the particulate impurity appear to buildup in a thin section (A) at the top of the filter and provide the primary mechanism for further particulate entrapment. Recirculation of fibers offers a continuously fresh volume of fibers at the top for capture of particulates.

Abstract: The apparatus relates to separation apparatus (1) for separating at least two elements contained in a liquid or gaseous fluid, the apparatus including a separation chamber (60) of adjustable height delimited by a piston (30) slidably mounted in a piston cylinder (2). A variable pressure may be applied to the face (34) of the piston (30) situated outside the chamber (60). The piston cylinder (2) is mounted in a protection cylinder (6) in which a fluid may flow for maintaining a given temperature inside the separation chamber (60).

Abstract: A system for decontaminating compressed gas having twin particulate desiccant-containing towers and a two-stage coalescer-containing precoalescer upstream of and connected to the towers by an inlet manifold, each tower having a pneumatically actuated inlet valve and a solenoid valve in the inlet manifold and an outlet valve in a common outlet manifold, the towers and precoalescer each having a drain valve and containing in a lower part an upwardly acting compactor for respectively compacting the desiccant and preventing oil leakage, the towers above a predetermined pressure of gas from the precoalescer and under control of the solenoid valves and a timer each alternating between decontaminating and regenerating cycles and together alternating in decontaminating cycles for continuously supplying decontaminated gas to the outlet manifold, and the outlet manifold in turn supplying decontaminated gas as actuating gas to each of the valves and compactors.

Abstract: A filter cartridge incorporates a layer of granular material (4d) for adsorbing gases and/or vapors retained in position by porous retaining elements (4e, 4f, 4g). The cartridge includes a housing (2) and a closure element (3) for closing the housing. The closure element (3) is associated with a compression element (10) which during assembly of the closure (3) on the housing (2) acts against the retaining elements (4e, 4f, 4g) to compress the granular material (4).

Abstract: A portable PSA device having a combination of features including a demand device to thereby limit the necessary size of the PSA unit itself; an improved spring loaded bed to permit horizontal use, and an arrangement of parts overall to produce a low profile, low center of gravity compact unit particularly suitable for use in automobiles and of sufficiently low power demand to be powered by the cigarette lighter socket of automobiles.

Abstract: In an adaptation of an air dryer assembly for removing moisture from a stream of compressed air a container comprising a first part 15 and a second part 7 with a separable annular seal 17 and the adaptation including passageways for directing flow of compressed air from one part 2 of the main body via the inner container to another part 3 of the main body.

Abstract: A monolithic catalytic converter has a two-piece slip pin that extends through a monolithic substrate and is connected at its opposite ends to the housing so as to retain the substrate therein while freely allowing differential thermal expansion between the slip pin and the housing to accommodate thermal mismatch between these components.

Abstract: Apparatus to remove moisture from a natural gas stream includes:(a) a conduit for a stream of fluid, the stream containing impurities, such as H.sub.2 O and H.sub.2 S,(b) and a filter assembly in communication with the conduit for passing the stream and removing impurities therefrom, the filter assembly including(i) a longitudinally elongated barrel and first and second end structures at opposite ends of the barrel,(ii) the barrel containing filter material in granular form,(iii) the first end structure containing a fluid inlet and a first plenum communicating with the inlet and with the filter material in the barrel, and the second end structure containing a fluid outlet and a second plenum communicating with the outlet and with filter material in the barrel,(iv) and structure in the barrel to pressurize the filter material to prevent channeling, such structure for example including one or more pistons in the barrel.

Abstract: The invention relates to a horizontally mounted canister having a evaporated fuel supply port and a purge port provided on one side of an absorber chamber therein, an atmospheric air port provided on the other side thereof, a movable tray pushing one side surface of the absorber, and an additional absorber chamber which projects upward at the top and which is provided in the absorber chamber.

Abstract: A canister for absorbing fuel vapors includes a vapor-absorbing adsorbent layer contained in a cylindrical, laterally-mounted casing, an intake port and a purge port which are provided at one side of the adsorbent material layer, an air port provided at the other side of the adsorbent layer, fixed filters and perforated retaining plates for retaining the two sides of the vapor absorbing material layer, and a device for preventing a space from occurring in the adsorbent layer, the device being provided in an upper wall portion of the casing and including a tubular guide having a lower end opening into the adsorbent layer, a plunger fitted into the guide slidably in the vertical direction, and a spring for urging the plunger downward.

Abstract: A molecular sieve bed container provides a plurality of molecular sieve bed chambers. The chambers are formed by tubular wall members concentrically located within a tubular outer housing and are closed at their ends by end closure members. One end closure member incorporates valves (not shown in FIG. 1) for controlling supply of charge gas to the sieve bed chambers and venting of purge gas from the sieve bed chambers. The other end closure member incorporates valves for controlling passage of product gas from the sieve bed chambers to an outlet (not shown) and portways for permitting some of the product gas to flow back through the sieve bed chambers as purge gas during a purge/vent phase.

Abstract: An apparatus for the adsorptive cleaning of gases comprises a rigid hermetically sealed housing provided internally with an inner vessel connected with the outer housing by a fluid carrying duct which is yieldable along the axis of the inner housing. The inner housing rests upon a grate and can be surrounded by a layer of thermal insulation. A filling of the adsorbent is provided in the inner vessel which is free from the usual bottoms carrying beds of adsorbent.

Abstract: A vacuum cleaner having an air non-pervious body in the shape of a closed bellows in the suction chamber thereof with one end of the bellows bearing against the dust container, and the other end bearing against a partition separating the suction chamber from a positive pressure chamber housing the motor-fan unit. The bellows communicates with the pressure chamber through a conduit so that the bellows can be brought into communication with the positive pressure side of the fan so that the bellows expands and compresses said dust container and its contents, and thus increases the filling capacity of the dust container. The running costs of operating a vacuum cleaner is thus substantially reduced.

Abstract: A canister-compactor assembly insertible as a unit in a housing of a compressed gas filter, the assembly including a canister loadable with a particulate desiccant and a pneumatic compactor mounted in an outlet end of the canister and chargeable with compressed gas for compacting the desiccant, the compactor being chargeable and dischargeable outside the filter housing and in the housing being exposed to filtered compressed gas for maintaining the desiccant compacted.

Abstract: A high performance ventilation system with .[.means.]. .Iadd.provisions .Iaddend.for recovering a high percentage of sensible and latent thermal energy from the exhausted air for return via the supply air. Two matrices of thermally absorbent, expanded honeycomb material are respectively alternately interconnected with fan-driven supply and exhaust paths via a valve device to store energy in one matrix while retrieving energy from the other. Constant air flow direction is maintained in the ventilated area. The valve may be thermostat controlled. The matrices are preferably formed of a fibrous organic material such as paper, in an expandable honeycomb configuration, and resin impregnated for durability and strength. A degree of residual flexibility is desired whereby the matrices may be adjusted for fitting, air control and cleaning purposes.

Abstract: An adsorber having an upright longitudinal extent includes two perforated parallel panels extending within the vessel formed therein and spaced apart defining an adsorbent mass chamber. The adsorbent mass is in two longitudinal parts having a first part of fine particles and a second part of larger particles. The gas to be treated is circulated horizontally between the two perforated panels. This device allows the treatment cycle to be less than 60 seconds with the same or better performance. This adsorber and process are preferably used for the separation of oxygen from air.