摘要:
The present invention relates to a magnet (100), which comprises a body (102) and a first slide (101) arranged to be movable relative to the body (102) between a first and a second position. The first slide (101) comprises a first permanent magnet (106), and a first and a second pole piece (107, 108) attached to opposite magnetic pole sur- faces of the first permanent magnet (106). The body (102) comprises a first and a second plate (103, 104), which are arranged in parallel and at a first distance from each other. The second plate (104) comprises a first through hole (109), in which the first slide (101) is movably arranged so that the first pole piece (107) is directed towards the first plate (103), wherein at the first position of the first slide (101), the first pole piece (107) is located outside the first through hole (109) and at least part of the second pole piece (108) is located inside the first through hole (109), and at the second position of the first slide (101), the first permanent magnet (106) and at least part of the first and the second pole piece (107, 108) are located inside the first through hole (109).
摘要:
The invention relates to a greenhouse light, which comprises a light frame (1), a light source (2) fitted in connection with a first end of the light frame (1), and a reflector (3) arranged at a distance from the light source (2) for reflecting the electromagnetic radiation emitted by the light source (2). The light frame (1) of the greenhouse light is arranged to be turnable in relation to the reflector (3), so that the distance between the light source (2) and the reflector (3) can be adjusted. The invention further relates to a greenhouse light system and a method for altering the radiation pattern of a greenhouse light.
摘要:
The invention relates to a method for using a SWING-type mixing device (1) and to a SWING-type mixing device (1), in which a main turning axle (2) of the mixing device is turned back and forth, that is in turns to a first direction all the way to a first turning point (FT) and to a second direction all the way to a second turning point (ST). According to the invention, power transmission to the main turning axle (2) can be produced by terminating power transmission to one direction slightly before the turning point, by letting mass inertia of the apparatus handle the turning of the direction of movement at the turning point and by starting power transmission to the opposite direction of the first slightly after the turning point.
摘要:
The invention relates to a papermaking agent system in liquid form, which comprises (i) cationic starch solution, prepared by cooking a starch mixture comprising a starch component and a water component, and (ii) polymer composition, which has anionic and cationic groups and a cationic net charge of > 0.1 meq/g. The polymer composition comprises or originates from at least one of constituents a), b) or c). Constituent a) contains an amphoteric polymer, which is a copolymer comprising structural units derived from acrylamide and/or methacrylamide monomers, and anionic and cationic groups attached to the copolymer. Constituent b) contains a first polymer, which is a copolymer comprising structural units derived from acrylamide and/or methacrylamide monomers, and anionic or cationic groups attached to the copolymer, as well as a second polymer, which comprises groups with opposite charge than the first polymer. Constituent c) contains a third polymer, which comprises a copolymer comprising structural units derived from acrylamide and/or methacrylamide monomers, as well as hydrolytically unstable cationic groups attached to the copolymer. Constituent a), b) or c) is added to one of the components of the starch mixture or to the starch mixture before the cooking of the starch mixture, and/or constituent a) or b) is added to the cationic starch solution after cooking of the starch mixture. The invention relates also to the use of the papermaking agent system and to a method for its preparation.
摘要:
The invention relates to a building arrangement (10) and a method for utilizing solar energy. The method comprises at least the following steps: - sunlight is led through a translucent part of an outer layer (1) of a building (11 ) and an outermost air gap (a) to a solar energy absorbing layer (2a), - air is heated with the heat from the absorbing layer (2a) and heated air is led from the outermost air gap (a) through a counter-current insulation (2b) to a central air gap (b) of the building, - thermal energy is led with the heated air with the air recirculating means from the central air gap (b) to the heat storage (e).