42 results about "Wall suction" patented technology

Methods and systems are provided for a sub-atmospheric wound-care (SAWS) system for treating an open wound. The SAWS system includes a regulated vacuum source for developing a negative pressure, a flow rate meter configured to measure a flow rate of liquid removed from the wound, a primary pressure regulating sensor located proximate the wound for directly measuring the negative pressure at the wound, a backup pressure regulating sensor located vacuum tube, a porous dressing suitable to be sealed airtight which is positioned within a wound interface chamber, a collection canister configured to collect said liquid removed from the wound, and an adapter configured to use wall suction a primary regulated vacuum source.

The current invention provides apparatuses and methods for protecting buildings / structures from wind damage and simultaneously harvesting energy from wind. The apparatuses of the current invention comprise horizontal axial wind turbines integrated to the roof-edge of the buildings / structures in an aerodynamically conducive and structurally viable configuration to reduce roof suction. The apparatuses of the current invention can further comprise aerodynamic roof gutter and structural supports / connections to alleviate wind-induced suction (negative pressures) on building roofs generated by separated flows and vortices. The apparatuses of the current invention can also comprise vertical axial wind turbines integrated to the wall-edge of the structures / buildings in an aerodynamically conducive and structurally viable configuration to reduce wind induced wall suction generated by separated flows and vortices.

The present invention relates to an elongated vacuum system for coating one or both sides of a flat substrate which is moved by the system. The vacuum system comprises at least one magnetron with a region around the magnetron and is divided into successive compartments by sealable partition walls along the conveying direction of the substrate. The compartment can be evacuated directly via a vacuum port located on the compartment, or indirectly via a suction opening in the partition wall. The at least one compartment includes an upper partial compartment located above the base, the partial compartment including a sealable upper opening in at least one outer wall thereof. The object of the present invention is to produce an elongated vacuum system for flexible application according to the requirements of different one-side and two-side coating processes and to carry out this process within said system which ensures stability, differentiation and process optimization sputtering atmosphere. This object is achieved by the fact that in at least one of the upper partial compartments horizontal and / or vertical elements can be installed for dividing said upper partial compartment into several sub-compartments.

The invention provides an external wall cleaning machine which comprises a machine frame, a cleaning mechanism, a walking mechanism and a wall suction mechanism. The cleaning mechanism comprises two support rods rotationally arranged at the front end of the machine frame. An installation shaft is arranged between the support rods on the two sides. A cleaning brush roller is arranged on the installation shaft. Torsional springs for compressing the cleaning brush roller on the external wall are arranged between the machine frame and the support rods. The walking mechanism comprises driving shafts rotationally arranged at the front and rear portions of the bottom of the machine frame, eccentric shaft sleeves arranged at the two ends of the driving shafts in a sleeving mode, L-shaped walking legs and a positioning panel rotationally arranged between the walking legs on the two sides, wherein one end of each L-shaped walking leg is rotationally connected with the eccentric shaft sleeve. The two driving shafts are driven by two motors to rotate. The wall suction mechanism comprises a plurality of negative pressure adsorption holes formed in the surface of the positioning panel. The positioning panel is provided with a cavity communicated with the negative pressure adsorption holes. Air passes through a flexible air pipe to be connected with a vacuum pump, the efficiency is high, and the cleaning effect is good.

The present invention provides apparatus, methods and systems for integrated building-based air handlers for efficient cooling of data centers. Some embodiments of the present invention allow for encapsulation of the heat row through the enclosure and allow one or more cooling fans to be integrally mounted within the rack mount unit for drawing cool air to cool the rack mount mounted in the rack unit and exhaust heated air towards the enclosure wall. In other embodiments, the disclosed system can be used to bring in outside air to cool servers. In some embodiments, in addition to the heat row enclosure, the system also encloses the cold row through the cold row enclosure. The rack-mount unit's cooling fans draw cool air from the cold row enclosure to cool the unit, and expel heated air toward the hot row enclosure. In some embodiments, the control system is used to selectively utilize free cool air to cool the servers. When the outside air is not suitable for cooling purposes, the control system recirculates the heated air from the thermal exhaust enclosure and one or more evaporative coolers are used to cool the heated air.

The invention discloses a combined suction type plane cascade experimental device which comprises a first grid plate, a second grid plate, a first suction hood, a second suction hood, a non-suction blade, a suction blade, a grid plate rod, a suction surface suction rod and an end wall suction rod, wherein the first suction hood and the second suction hood are of two platy structures in mirror symmetry and are fixed in the centers of the outer end faces of the first grid plate and the second grid plate separately; a plurality of end wall suction cavities are formed between the first suction hood and the first grid plate; a plurality of suction surface suction cavities are formed between the second suction hood and the second grid plate; and the end wall suction rod and the suction surface suction rod at the mounting outer ends are adopted to guide boundary layer low-energy fluid out. The combined suction type plane cascade experimental device overcomes the difficulty in the prior art that end wall suction and suction surface suction cannot be carried out simultaneously, realizes the purpose of independently controlling the suction flow rate of the end wall and the blade suction surface, meets the experimental demand of flow matching of two suction grooves under different working conditions, and can fully and completely suck the low-energy fluid in the end wall boundary layer.

The invention relates to a combined suction scheme for controlling compressor stator corner separation. The combined suction scheme is characterized in that a suction groove is formed in an end wall of an axial-flow compressor stator cascade channel circumferentially, a suction groove is formed in a blade suction surface in a blade height direction, a suction groove in the end wall is parallel to a forehead line, the control on different axial positions and different suction groove lengths can be realized, and the suction groove in the end wall and the suction groove in the blade suction surface can also be controlled through different combination forms of positions. Compared with a single suction scheme, the combined suction scheme can combine advantages of suction surface suction and end wall suction, so that the development of boundary layers on the suction surface and the end wall can be prevented more effectively, gathering and mixing of the boundary layers at corners can also be prevented, the corner separation can be inhibited obviously, the total pressure loss can be reduced, and the stability and the efficiency of a compressor can be improved.