GERHARTZ BENGT AOKE (SE)
JOHANSSON BERT (SE)
KEDBRANT TOMMY (SE)
| US2395233A | 1946-02-19 | |||
| US2742845A | 1956-04-24 | |||
| US3010380A | 1961-11-28 |
| 1. | An air supply means for a device for conditioning of rooms comprising a doublewalled air blower means (10) which extends along at least one outer wall of said room, the inner wall (12) of said air blowe means defining a longitudinal duct (18) adjacent the wall of the room, 5 which communicates with an apparatus for air conditioning and which in i upwardly turned side (22) is provided with openings for exhaust of air into the room, the outer wall (14) of said doublewalled air blower mean which faces the interior of the room, defining a space (20) with said inner wall of said blower means, which space is open towards the room an 10 communicates with said exhaust openings, characterized in that said air blower means (10) is designed to form a base in the room at the lower portion of the wall and further designed to produce coejection of room air through said space (20) when exhausting air through said exhaust openings, said duct (18) being connected to said apparatus for air 15 conditioning via a pressure box (26) for equalizing the supply pressure, which box is disposed in the room wall. |
| 2. | A means according to claim 1, characterized in that said open upper side of said duct (18) and said space (20) is covered by protectiv gratings. |
| 3. | 20 3. A means according to claim 1, characterized in that an air suppl system which is connected to said apparatus for air conditioning is designed for air exhaust with low impulse such that the air flow velocit from the air blower means (10) is in the range of 0.2 to 0. |
| 4. | 8 m/s. |
| 5. | A means according to claim 3, characterized in that said air 5 supply system is formed of a ventilating system which via a central apparatus transports ventilating air having a basic temperature to an apparatus for air condition in each flat. |
| 6. | A means according to any of claims 1 to 4, characterized in tha said air blower means (10) is mounted adjacent the floor and along all t 30 walls of the room. |
Modern as well as older ventilating systems of our dwellings do no fulfill requirements as to acceptable comfort and function according to declarations from the Swedish authorities. Complaints about bad air, draught problems, moisture and mould have become more and more frequent. An ordinary manner of solving draught problems is to reduce air circulation or increase the temperature in the flats. In the first instance the air circulation often becomes so low that the resident experiences a stale air and damp and at worst gets a mould problem. In t second instance the energy consumption increases in an unacceptable way. Ventilating systems of modern and older dwellings normally just ventilate the building. The heating is accomplished by means of radiator systems in order to cover the transmission losses.
In new airtight well insulated houses a very small amount of additional heat from the heating system is needed. The present invention is based on the principle that this amount of additional heat can be supplied to the ventilating air in a ventilating system supplying and removing air.
Thus, the present invention relates to a device for conditioning rooms according to claim 1. The device according to the invention is advantageous in that it supplies heat to the ventilating air as well as heat to cover the transmission losses. In this way the radiator system can be dispensed wi which lowers the building costs. Thus, the present invention provides improved comfort at the same time as the installation costs are reduced considerably.
The air blower means is preferably located along the whole outer front of the room or flat in order to spread the heated air uniformly an attain a complete degree of ventilation. This location also prevents a possible so-called cold fall from the windows. The air is blown into the room with such low impulse that dust and similar particles are not carried along by the air stream, which corresponds to an air flow velocity in the range of 0.2-0.8 m/s. The air blown into the room is then preferably forwarded in the flat by means of special upper air means which are located in partition .walls about 0.5 m above the floor.
In accordance with an advantageous further development of the devi according to the invention said duct is connected to the apparatus for
conditioning air by a pressure box mounted in the wall of the room, which box serves to equalize the supply pressure and eliminate turbulence in th air flow.
In accordance with another advantageous embodiment of the device according to the invention the air supply system consists of a ventilatin system which by a central apparatus transports ventilating air having a basic temperature, preferably about 15°C, in winter time, to a hot air apparatus in each flat, the temperature of which can be controlled individually suitably by means of an automatic temperature regulator. In this apparatus the supplied air is preferably mixed with filtered return air in the flat.
The energy is preferably supplied to the hot air apparatus via the circulated hot tap water and/or an electrical battery.
The device according to the invention can suitably be used also in combination with a passive air-solar collector which advantageously forms a portion of the external wall or the roof construction for heating exterior air to the air heating system. When the added solar heat then surmounts what is needed to heat the rooms, it can be used to heat, hot ta water. By means of the passive air-solar collector the flats which are adjacent the air-solar collector can be cooled by reverse function of a heat pump. The device according to the invention can also be used for basic ventilation of the room and thus can be generally used for conditioning of rooms.
An exemplary embodiment of the present invention will now be described more in detail with reference to the annexed drawing which show a portion of an outer wall of a house adjacent a naked floor, in cross section with a device according to the invention installed.
The wall includes an inner limiting board 2, insulation 4 and a front wall covering 6. Adjacent the inner side 2 of the wall and adjacent the floor 8 a double-walled air blower means 10 is mounted.
The inner wall 12 of the air blower means 10 is fastened to a metal profile 15 which is fastened to the naked floor 16 and the wall 2. The air blower means 10 extends along the outer wall and against th inner side of the wall of the room and the profile 15 defines a longitudinal duct 18.
At a distance from the inner wall 12 of the air blower means 10 an outer wall 14 is mounted to define a space 20 between the inner and outer walls 12 and 14 respectively of the air blower means 10.
The inner wall 12 as well as the outer wall 14 of the air blower means 10 are provided with suitably dimensioned openings in the upwardly directed portions 22 and 24 respectively. The wall portions 22 and 24 can for example be practically completely open and covered by protective gratings. The openings in the wall portions 22 and 24 are adjusted to the desired upwardly directed air flow.
The duct 18 is connected to a pressure!ess box 26 which is mounted below the room wall and supports it. By means of the box 26 the pressure supply to the duct 18 is equalized and turbulence in the air flow is eliminated. The pressure box in its turn is fed from a duct 28 with air from a hot air unit (not shown).
By this design of the supply system with the pressure box 26, the air is blown into the room with such low impulse that dust or other particles are not carried along in the air flow. The flow velocity at th open wall portions 22 and 24, respectively, is in the range of 0.2 to 0.8 m/s. This air, blown through the duct 18, co-ejects room air through the space 20 which is open adjacent the floor 8.
In the design shown in the drawing the supply duct 28 is inserted in an enlargement 30 in the outer wall, on a level with the naked floor 16. •
Furthermore, the air blower means 10 is designed to form a base along the outer wall of the room. Hence, the air blower can be mounted along all of the walls of the room.
The device according to the invention can be applied in houses having several flats as well as in small houses.