Abstract: An automatically operable dynamic purge system that is incorporated into a heat recovery wheel that comprises a number of radial seals that direct a controlled area of supply air into the exhaust air stream passing through the heat recovery wheel. Two possible configurations include a single purge and a double purge. For the single purge, one seal is fixed in location on one face of the wheel and a second seal is dynamic and is on the opposite face. For the double purge, two seals are fixed in location on one face of the wheel and a third seal is dynamic and is on the opposite face. In each case the dynamic seal is secured by an automatically operable wiper blade. This wiper blade is attached near the center of the wheel such that it rotates, in turn, allowing the seal to rotate while remaining approximately radial to the wheel.

Abstract: This invention relates to a adjustment device intended for the adjustment of belts of belt conveyors and of the type that comprises a roller that is rotatable around a first axis (CR) and mounted in a cradle, which in turn is turnably mounted in a supporting stand, and, by a force generator, tiltable in relation to the stand around a second axis (CT) extending perpendicularly to the first one. According to the invention, the adjustment device comprises a transmission actuator in the form of a carriage having two guide elements, which slope in different directions. When the force generator generates a force having a first principal force component, the transmission actuator transforms the same into a force having a second principal force component, the direction of which is different from the first force component, which guarantees tilting of the cradle and thereby also the roller in relation to the stand. The transmission actuator is built-in into a space between the roller and a base part of the stand.

Abstract: This invention relates to a adjustment device intended for the adjustment of belts of belt conveyors and of the type that comprises a roller that is rotatable around a first axis (CR) and mounted in a cradle, which in turn is turnably mounted in a supporting stand, and, by means of a force generator, tiltable in relation to the stand around a second axis (CT) extending perpendicularly to the first one. According to the invention, the adjustment device comprises a transmission actuator in the form of a carriage having two guide elements, which slope in different directions. When the force generator generates a force having a first principal force component, the transmission actuator transforms the same into a force having a second principal force component, the direction of which is different from the first force component, which guarantees tilting of the cradle and thereby also the roller in relation to the stand.

Abstract: An automatically operable dynamic purge system that is incorporated into a heat recovery wheel that comprises a number of radial seals that direct a controlled area of supply air into the exhaust air stream passing through the heat recovery wheel. Two possible configurations include a single purge and a double purge. For the single purge, one seal is fixed in location on one face of the wheel and a second seal is dynamic and is on the opposite face. For the double purge, two seals are fixed in location on one face of the wheel and a third seal is dynamic and is on the opposite face. In each case the dynamic seal is secured by an automatically operable wiper blade. This wiper blade is attached near the center of the wheel such that it rotates, in turn, allowing the seal to rotate whilst remaining approximately radial to the wheel.

Abstract: The invention comprises a valve arrangement (10) with at least two inlets (20, 21), adapted each for a medium (A, B), and at least one outlet (22), through which a chosen mixture of the said media can pass. The said inlets (20, 21) are adapted to interact each via a section (20a, 21a) of channel with associated openings (12c, 12b) in a valve seating (12) while the said outlet (22) is adapted to interact via a section (22a) of channel with an associated opening (22) in a valve gate (11). A first means (30) is available in order to control at least the motion of the valve gate (11) relative to the valve seating (12) that at least one chosen mixing ratio and/or one chosen rate of flow can thus be regulated. A glide surface and/or an interface (11a, 12a) between the valve seating (12) and the valve gate (11) is chosen to be plane, or at least essentially plane.

Abstract: The present invention relates to a mixing valve that can be included in pulmonary respiration equipment and with which oxygen (2) and air (3) can be mixed in adapted proportions. The mixing valve (1) comprises a valve housing (40) that has an internal cavity (46), which forms two mutually opposing valve seats (10d, 20d). The cavity (46) encloses an element (30) on which two valve bodies (10c, 20c) are formed. The cavity wall and the element have respective screw threads (46c? and 30c?) which enable two valve means (10, 20) to be actuated so as to open one of said valve means and close the other to passage of media therethrough. The mixing valve is of simple construction and precise in operation and can be constructed with small outer dimensions.

Abstract: The invention relates to a respiratory arrangement (1) that includes: a control unit (3), a plurality of gas delivery hoses (4), and a patient-allocated or -related device (5), such as a facemask, wherein first end portions (4a) of respective hose face towards the control unit while second end portions (4b) of respective hose face towards said device. The control unit (3) inlcudes means for passing a gas flow, intended for inhalation, or passing a gas flow. intended for insufflation (“1”) to said patient via a first hose (4c). An expiration valve (6), situated close to the patient-allocated or -related device is adapted to release a gas flow intended for expiration (“E”) to the free surroundings and said expiration valve can be switched to one of two settings, via a second (4d) of said gas delivery hoses.

Abstract: The invention relates to a valve arrangement in the ventilatory treatment of the lungs of a living creature (2) under a state of anaesthesia, comprising valve equipment (4) devised to carry an insufflation gas and/or an insufflation gas mixture from a lung ventilation unit (3) into the lungs and airways (2a) of the living creature (2) and allow expiration of gas and/or gas mixture held in the airways. The said valve equipment (4) and a combination of sensor units (61, 61A, 62) are arranged in close proximity to one another. They are inter-connected by an end section for a bundle of tubing (30) from the lung ventilation unit (3), and the said sensor units (61, 61a, 62) are located closer to the said living creature (2) than the said valve equipment (4).

Abstract: The present invention relates to a method and a fixture system for providing a fixture for the positioning and clamping of details to be assembled, preferably by welding. According to the method drawing information for the assembled product is provided in a computer program, a zero position on the product is established, an installation plan for the fixture to be built is provided by determining support positions in a system of coordinates, for the fixture relative to the product, based on the drawing information and starting from the zero position on the product, and the fixture is built up according to the established installation plan and from standard fixture components (1, 5, 7, 14) selectively interconnectable by means of hole systems (2, 6, 18, 15) extendable along the X-, Y- and/or Z-axes of the coordinate system.