Supply air apparatus

Abstract

A supply air apparatus for producing outdoor air into an indoor space assisted by an auxiliary powered blower by simultaneously mixing the outdoor air with air from the indoor space. In connection with an outdoor air flow way in a structure in a building between the indoor space and outside air, a flow space and flow connections for outdoor and indoor air for mixing with each other, the blower and a blow flow arrangement for leading a mixed flow of air into the indoor space in the building. In connection with a supply air device in an outer wall of the building, an air distribution device including: a frame; a flow space in the frame; an inflow outdoor and indoor air that joins with the flow space and opens into an internal space in the building; the blower; and a blow flow leading the mixed air into the indoor space.

Claims

1. A supply air apparatus for flowing outdoor air into an indoor space of a building containing indoor air assisted by an auxiliary powered blower arrangement by mixing the outdoor air to be brought into the indoor space with the indoor air from the indoor space, wherein the supply air apparatus is connected to an outdoor air flow way provided in a structure of the building between the indoor space and an outdoor air flow space using air flow connections for flowing the outdoor air into the indoor space containing the indoor air and mixing the outdoor air and the indoor air with each other, the supply air apparatus comprising: the auxiliary powered blower arrangement and a blow flow arrangement for directing a flow of mixed air into the indoor space, and an air distribution device in connection with a replacement air valve provided in connection with a window structure wherein the air distribution device is configured and arranged to provide an air flow passing upwards along an outer wall of the building, and wherein the air distribution device is arranged in the indoor space in the building on an inner surface of the outer wall or a ceiling above the replacement air valve, the air distribution device comprising in a built-in manner: a box-structured frame; an internal flow space in the frame; an inflow arrangement of the outdoor air and the indoor air that joins with the internal flow space in the frame and opens into an internal space in the building; the auxiliary powered blower arrangement; and the blow flow arrangement that directs the flow of mixed air into the indoor space.

2. The supply air apparatus according to claim 1, wherein at least one of the inflow arrangement for the outdoor air and the indoor air or the blow flow arrangement of the air distribution device arranged on an inner surface of the outer wall is arranged when viewed in a horizontal plane to be directed in more than one direction.

3. The supply air apparatus according to claim 2, wherein an end on a side of an output end of the frame of the air distribution device is arranged convex towards the indoor space in the building.

4. The supply air apparatus according to claim 2, wherein at least one of the inflow arrangement or the blow flow arrangement of the air distribution device comprises at least one part, when viewed from the side in an inclined position from the frame outwards directed guide surfaces for guiding the air flows in a direction of height.

5. The supply air apparatus according to claim 1, wherein the air distribution device comprises with at least one of cleanable or replaceable filters implemented filtering for filtering of the outdoor air, the indoor air and/or the flow of mixed air.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the following description the invention is being described in detail with reference to the enclosed drawings, in which

(2) in FIGS. 1a-1e are shown a front view, a side view, a cross-sectional side view, an overhead view and diagonally from above shown perspective view of an advantageous air distribution device according to a first alternative of the supply air apparatus according to the invention,

(3) in FIGS. 2a-2d are shown respective views as in FIGS. 1a, 1b, 1d and 1e of an alternative implementation with respect to the air distribution device shown in FIGS. 1a-1e,

(4) in FIG. 3 is shown a side view regarding the placement of an air distribution device, implemented according to the first alternative, above a replacement air valve in connection with a curtain box,

(5) in FIG. 4 is shown an alternative implementation with respect to FIG. 3, in which the air distribution device according to the first alternative is placed in the wall above a replacement air valve close to the ceiling, and

(6) in FIGS. 5a and 5b are shown as an exemplary manner first of all a side view of an implementation of the air distribution device according to a second alternative of the supply air apparatus and secondly an enlarged detail from the placement point of the air distribution device.

DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

(7) The invention relates to a supply air apparatus, which is meant for producing outdoor air into an indoor space assisted by an auxiliary powered, advantageously electrical, blower arrangement 1 by simultaneously mixing the outdoor air u to be brought into the indoor space with air from the indoor space s. The supply air apparatus comprises in connection with an outdoor air flow way that exists in a structure W in a building between the indoor space and outdoor air a flow space V along with its flow connections for outdoor air and indoor air for mixing the above with each other, the blower arrangement 1, such as one or more, advantageously on axial principle operated, blowers, and a blow flow arrangement 2 for leading a mixed flow of air us into the indoor space in the building. The supply air apparatus comprises in connection with a supply air device X, such as a replacement air valve or like, in an outer wall of the building a built-in air distribution device Y, which comprises: a box-structured frame R; an internal flow space V in the frame; an inflow arrangement SV of outdoor and indoor air that joins with the flow space and opens into an internal space ST in the building; the blower arrangement 1, such as one or several parallelly coupled device blowers or like; and the blow flow arrangement 2 that leads the mixed air us into the indoor space.

(8) As an advantageous embodiment of a first alternative of the air supply apparatus according to the invention as shown e.g. in FIGS. 1a-1e or 2a-2d, the air distribution device Y is arranged on the principle as shown e.g. in FIGS. 3 and 4 in the indoor space ST1 in the building on an inner surface of an outer wall, such as in a wall or a ceiling, above a supply air device X, such as replacement air valve X1 in a window or a like, existing in an outer wall W of the building.

(9) As an advantageous embodiment of the second alternative of the supply air apparatus according to the invention, the air distribution device Y is arranged on the principle as shown e.g. in FIGS. 5a, 5b in a space ST2 between window structures i1, i2 in a window existing in an outer wall W of the building.

(10) Thus, as a furthermore advantageous embodiment of the supply air apparatus according to the invention, feeding of the outdoor air into the air distribution device Y is arranged by outdoor air u that is led into the space ST2 between the window structures i1, i2 in the window through flow ways iR existing in connection with the outer window structure it of the window, such as through ventilation openings at a lower edge thereof.

(11) In this context, as a further advantageous embodiment of the supply air apparatus according to the invention, the inflow arrangement SV1 of indoor air comprises a flow way leading from the indoor space ST to the frame R for leading of indoor air of the building to the flow space R, V in the frame and the inflow arrangement SV2 of outdoor air comprising a flow way that is open from the frame R to the space ST2 between the window structures.

(12) In this context, as a further advantageous embodiment, the blow flow arrangement 2 comprises a flow way 2a that leads from the frame R into the indoor space ST in the building for leading the mixed air us into the indoor space ST1.

(13) As a further advantageous embodiment of the first alternative of the supply air apparatus according to the invention, the inflow arrangement SV for outdoor and indoor air and/or the blow flow arrangement 2 of the air distribution device Y is/are arranged on the principle as shown in FIGS. 1d, 1e and 2c, 2d when viewed in a horizontal plane to be directed in more than one direction. Differing from what is shown in FIGS. 1a-1e, in the implementation shown in FIGS. 2a-2d, there is in an arched manner uniformly continuing hole for the inflow of indoor and outdoor air and an outflow hole 2 for mixed air.

(14) As a further advantageous embodiment of the supply air apparatus according to the first alternative, an end II on the side of the output end of the air distribution device's frame R is arranged e.g. in a continuously arched manner convex towards the indoor space ST1 in the building.

(15) Furthermore as an advantageous embodiment of the supply air apparatus according to the invention with reference to FIGS. 1a-1e and 2a-2d, the inflow arrangement SV and/or the blow flow arrangement 2 of the air distribution device comprise/comprises in one or more parts, when viewed from the side, in an inclined position from the frame R outwards directed guide surfaces OP for guiding the air flows in a direction of height.

(16) As it is possible to implement the embodiment shown in FIG. 4 according to e.g. embodiments shown in FIGS. 1 and 2, the air distribution device Y in FIG. 3 differs partly from the type of embodiment shown in FIGS. 1 and 2, wherein the length of the body of the air distribution device is arranged adjustable advantageously e.g. on telescope-principle in order to fit the device in different kinds of widow box structures Z.

(17) As a further advantageous embodiment of the supply air apparatus according to the invention, the air distribution device comprises with cleanable and/or replaceable filters implemented filtering means 3 for filtering of outdoor air u, indoor air s and/or mixed air us.

(18) As a further advantageous embodiment, in the supply air apparatus according to the invention it is possible to utilize an extra-low voltage, typically e.g. at 5-24 V voltage, operated device blower, the power supply and control of which may be carried out in a significantly simpler and safer manner than on mains current operated devices.

(19) Adjusting the capacity of the device blower may be carried out in addition to or alternative to stepless voltage adjustment also by using e.g. parallel device blowers with on/off-principle, which means that maximal production is produced by using all device blowers and minimum production by using just one.

(20) As an advantageous actuator in practice may be mentioned a product, being marketed with the type name NF-R8, which, thanks to the noise damping technique used therein, makes possible an air distribution device that has a very silent operating sound.

(21) It is clear that the invention is not limited to the embodiments presented or described above, but instead it can be modified significantly within the basic idea depending on the installation site at any given time. It is thus clear that the shape of the replacement air valve may, differing from the elongated implementation as shown in the figures, also be more spotlike that is e.g. round, square shaped etc. by its cross-section. In this context, it is furthermore worth noticing that thanks to the invention, existing replacement air valves need not to be fixed, but instead, the possible filters and adjustment arrangements therein may still be utilized according to the original purpose of use thereof. The technique of the air distribution device in the supply air apparatus according to the invention may alike be varied by using e.g. a mains current or accumulator operated blower arrangement, the adjustment of the functionings of which may also be carried out with traditional wired adjustment arrangements or e.g. with cloud server principle from outside the apartment through a server e.g. in order to control the ventilation of the apartment when the apartment in empty in the winter or in other kinds of corresponding situations.