Abstract:
An apparatus for air heating systems, e.g. for residences, including a circulation unit (2) for recycling of air as well as an air heating unit for the heating air before its supply to the residential living areas. At least two ducts (8, 10) lead from the circulation unit for air transport to different zones of the residence. The air heating unit includes individually controlled radiators (12, 14) for each of the ducts. A ventilation unit with valve means for the supply of ventilation air is coupled to each of the ducts between the circulation unit and the radiators.
Abstract:
An extractor hood comprises: a housing for fixing to a building structure, for instance a wall, at a chosen position by means of fixing means, which housing (also) bounds a hollow space; an outlet connecting to this space for drawing off air, vapour and the like entering the space via an inlet by means of a fan placed at a distance via a suction conduit for coupling to said outlet; and a plate (also) bounding this space on the underside and having a generally downward convex form, which plate together with the side walls of the housing defines with its front side and both side parts three optionally mutually connecting vents forming the said inlet.
Abstract:
A jet fan arrangement (1) for ventilating tunnels etc. in which the axis (8-8) of the fan is at an angle (a) to the supporting surface (4) so as to blow air away from the supporting surface and when the flow of air through the fan (1) is reversed the angle (b) of inclination of the axis (8-8) of the fan is automatically changed so that the direction of flow of air remains away from the supporting surface (4).
Abstract:
Ventilation equipment with an intake of fresh air supply device (2) and heat emitting or absorbing ceiling panels (6, 7). These panels (6, 7) are placed laterally adjacent to the fresh air supply device (2), which is formed for blowing in air laterally along the underside of the panels (6, 7) so that the blown-in air coacts thermally with the panels.
Abstract:
Method for arranging of the ventilation of a building, in the rooms of which building is or into there is induced a pressure different from the normal pressure, as well as a building for applying of the method. The air-conditioning of old and new buildings is troublesome and the apparatuses required a the heating of the room spaces of the replacing air and at the cooling off of the room spaces of exhaust air for the transportation and handling are expensive and bulky. In the method according to the invention the on the one side of the wall (2) of the building in higher pressure being air is led to the other side of the wall mainly through the air permeable insulation materials (3) and is directed by means of the essentially worse than its surrouding air permeable directing materials (4) placed in the wall. To the structure in accordance with the invention belong the in the walls placed air permeable insulation materials and the essentially worse than the insulation materials air permeable directing materials.
Abstract:
An exhaust system capable of reducing the occurrence of noise to a very low level while making full use of the advantages of an exhaust method using a range hood. The system is capable of reliably sucking an exhaust gas which occurs around cooking utensils by a range hood, and minimizing the occurrence of noise without causing a suction loss to occur during the suction and exhaust operations. The exhaust system (100) is provided with a vent box (20) which is disposed, especially, in a range hood (11) or in a storage box (10) communicating with the range hood, and which is connected to an exhaust duct (40), the vent box (20) having a connecting box (20a) joined to the portion of the draft box (20) which is on the side of the exhaust duct (40), the connecting box (20a) converging toward the exhaust duct (40). Left and right partition walls (21) having inclined surfaces (22) extending toward substantially the center of the exhaust duct (40) are provided in the substantially central portion of the draft box (20).
Abstract:
The invention concerns a device for cooling large spaces by means of a flow of air generated by gravity. Air in the space is cooled by a cooling device mounted in an elevated position and characterized by the fact that, as fig. 1 shows, the outlet opening (4) of the cooling device (1) is connected to a variable-length plastic or fabric hose (2) which runs down towards the floor. The invention also relates to processes for the cooling of spaces using these devices.
Abstract:
A ventilation system for a multi-storey building (1), which system comprises a ventilation apparatus (4) mounted on a roof and provided with fans (5) for generating an inlet air flow (B) and a distributing channel for supplying the inlet air flow to various intermediate levels (2) of the building. To avoid a separate distributing channel and to spare building space, a service shaft (3) of the building serves as an inlet air flow channel, which shaft forms a flow path for the inlet air flow directed from the fans (5) downwards, whereby the service shaft has deflecting means (11) for passing a part (D) of the air flow to each intermediate level of the building.
Abstract:
The invention relates to a room ventilator which is intended to be mounted in a wall of a building for generating simultaneously air contraflows in separate air flow passageways through the ventilator in the wall. The ventilator includes a radial fan whose impeller (30) has an annular inner space which is divided into two chambers by two mutually opposing wall elements (40, 42). These chambers form separate inlet chambers for the air flows delivered to the fan from respective sides of the wall. The fan (26, 28, 30, 32, 34, 36) and its associated outlet channels are arranged in a box unit (12) which is insertably and withdrawably mounted in a mounting casing (10) in the wall, so as to define therewith separate inlet channels (A1, B1) which extend from the respective sides of the wall to the inlet chambers of the fan.
Abstract:
A ventilator with heat exchanger for heat recovering, in particular for recovering of heat from a flowing medium, such as a gaseous flowing medium, and transferring this heat to another colder flowing medium, such as a gaseous flowing medium, is described. The heat recovering ventilator comprises a heat exchanger for the exchanging of heat between two flowing media (I, II), whereby the exit (2) for the first flowing medium (I) from the heat exchanger is arranged neighbouring, preferably coaxially, to its entrance (3) for the second in opposite direction flowing medium (II), whereby the flowing media (I, II) in the said, preferably coaxial, arrangement are led through a ventilator (8) comprising an on a common shaft and with a, preferably co-rotating, partition (8C) provided double rotor (8I, 8II), whereby these two thus separated rotors each drives one of the two flowing media (I, II) through the heat recovering ventilator. Further embodiments of guiding means improving the functioning of the ventilator, by means of which a very compact embodied structure of the heat recovering ventilator is made possible, are described. The ventilator only requires one single through-opening in a wall for the installing of it.