DE102006035531A1 - Modular compact ventilation unit with heat recovery - Google Patents

Abstract

Compact ventilation unit with heat recovery according to previous Main application 10 2005 035 712.1, characterized in that the Device like this modular design, that the fans for supply and exhaust air not only in the inner tube, but also outside the inner tube and thus the heat exchanger with larger diameter as the inner tube and smaller diameter than the outer tube to the heat exchanger are infectious.

Description

Field of use:

The The invention relates to a compact ventilation unit with heat recovery in the countercurrent exchange method for use, e.g. as a decentralized ventilation device in the outer wall of rooms, or Containers or in larger embodiments also as a central ventilation system, So everywhere, where very compact devices needed be, especially for retrofitting in old buildings.

State of the art and disadvantages of the state of the technique:

The invention relates to a modular compact ventilation unit with heat recovery, according to the parent application Dt.PA 10 2005 035 712.1 dated 27.07.2005 of the same applicant, as well as application Dt.PA 10 2005 045 734.7 from 23.09.2005 d. Applicant, as a supplement to the prior art.

Reserves of the prior art:

One according to the state The technology produced compact ventilation unit can in Adaptation to diverse applications through modular design in creative Be improved, these improvements are not trivial, but because of complicated canal guides extremely difficult too are shaping. Some of those presented by the applicant in the parent application Variants can without the new supplementary Limited use and marketed.

Tasks of the new invention:

• 1. Reduction of noise by the device itself
• 2. Prevent the ingress of external noise through the device in interiors and vice versa
• 3. Design the remaining noise with a noise level and a frequency spectrum that focuses on work, e.g. in an office and / or falling asleep, e.g. in a bedroom or children's room facilitated
• 4. Cost-effective Installation of the device only from the inside to the erection of ladders and external scaffolding Fixing of external components to avoid
• 5. Prevention of ice formation in the heat exchanger and in external Split the fan at low outside temperatures
• 6. Use of the bypass channel for night cooling in summer
• 7. Use of the outside Elements for solar heat gain in the winter
• 8. Use of the outside Elements for the generation of direct current to reduce the own energy demand, possibly up to energy self-sufficiency
• 9. Design of the exterior elements to reduce the influence of wind pressure
• 10. Use of the fan element as additional heating for individual temperature increase in certain rooms of passive houses

solution the tasks:

The fan unit according to the invention consists of an outer tube, which is introduced into a wall bore and preferably foamed tight. This outer tube can be connected to the in-house power grid, an integrated guide element together with insertion funnel and preferably associated electr. Contain contact elements, so that the fan unit automatically connected electrically after insertion into the end position is.

In front the insertion of the fan unit, the outside elements pre-assembled with the help of a cord and a cyl. Fastening device with Centering aid outside pulled upwards on the façade; from the inside in the fastening position turned and then tightly fastened with snaps on the pipe become.

ever according to variant can Transformer and / or power supply with the outer tube introduced or in fan unit be integrated.

The modular fan unit can by loosening a snap connection for Maintenance purposes e.g. convenient for cleaning or replacing filters removed and inserted again.

Advantages of the invention:

• 1. The unit is very compact and space-saving
• 2. The unit requires both in the production, as well during installation low installation costs
• 3. Work with a full classical counterflow heat exchanger
• 4. The countercurrent channels are used in full length
• 5. Installation in circular wall bores, e.g. The fan unit is extremely economical
• 6. Equally distributed, or equivalent media flow in all channels
• 7. Streamlined arrangement the fans to the air ducts and to the channels in the heat exchanger
• 8. There is a possibility to bypass tegrieren
• 9. Economic construction structure, since the heat exchanger at the same time a large part represents the aggregate
• 10. Any diameter freely selectable or to the use and the installation situation customizable
• 11. Lengths also adaptable to the use and installation situation
• 12. The optimization potential of the extended tasks, can with the modular structure and the integrated approaches especially well exhausted become.

Description of the invention:

variants can the description and drawings of the parent application 10 2005 035 712.1, as well as the applications 10 2004 046 587.8-16 and 10 2005 045 734.7 are taken from the same applicant.

Important variants are shown as sketches and are described in more detail below:

Sketch 1:

Shows a modular plug-in unit with wound WT ( 1 ), Inner element without inner cover ( 2 ), Connection module ( 3 ) between WT ( 1 ) and fan assembly ( 3 - 6 ), Fan housing ( 4 ), Carrier module ( 5 ) for fan motors and fans and fan housings ( 6 ) without outer cover and weather protection.

On the left side you can see on the inner element ( 2 ) lying on the circumference / mantle 6 inlet openings for the suction of the exhaust air streams ( 8th ) and partly lying on the inside / inner shell outlet openings for the centrally incoming fresh air ( 7 ).

Sketch 2:

Shows the same plug-in unit from the other side / outside. You can see the fan housing 6 with the radial fan ( 6.2 ), as well as 6 exhaust openings for the exhaust air streams ( 10 ), which deflected radially outwards in the outer element, but can also be combined arbitrarily. The fresh air influx ( 9 ) runs centrally on the fan ( 6.2 ) and is pushed into outer channels through the modules ( 5 . 4 ) and ( 3 ) into the designated channels of the WT ( 1 ).

Sketch 3:

Shows in perspective the interior of the unit. You can see how the supply air flow ( 9 ) by the fan ( 6.2 ) through the channels of the modules ( 5 . 4 and 3 ) in the heat exchanger ( 1 ) at its right-hand end in module ( 2 ) to be redirected to the inside, where he then centrally as fresh air ( 7 ) via a non-visible cover element ( 2.1 ) is blown directly or deflected into the interior.

You can see that the fans ( 6.2 ) and ( 4.2 ) mounted on one side of the motors ( 6.3 ) and ( 4.3 ) are driven.

On the lower side you can see the countercurrent as exhaust air stream ( 8th 6) in the jacket of the module ( 2 ), occurs through the WT ( 1 ) and the channels of the module ( 3 ) from the fan ( 4.2 ) and sucked out of the housing ( 4 ) via channels in ( 4 ) 5 ) and ( 6 ) to the invisible outer element ( 6.1 ), where it flows in the form of 6 exhaust air streams ( 10 ) into corresponding channels of the outer element ( 6.1 ) is redirected.

In the bypass tube ( 11 ) slide elements ( 12 ) and ( 13 ), by a motor ( 15 ) with the help of kinematics elements ( 16 ) can be moved so that to avoid icing of the heat exchanger ( 1 ) continuously a flow of air ( 14 ) can be pushed inwards via the bypass, whereby the fan is optimally driven at the limit of what just prevents icing.

In summer, a 100% opening of the bypass valve ( 12 ) and corresponding closing of the slide ( 13 ) cool night air as an influx ( 14 ) are led inside.

Sketch 4:

This sketch shows the indoor module 2 with its annular sector-shaped sealing surfaces ( 25 ), which from the fresh air sectors of the wound heat exchanger ( 1 ) incoming air streams ( 7 ) are diverted to the center, while the flows to the exhaust air sectors of the heat exchanger ( 8th ) through shell openings in the heat exchanger ( 1 ) are sucked.

Sketch 5:

This sketch shows the top view of the module ( 6 ) with fan wheel ( 6.2 ), which the fresh air ( 9 ) from the outer element ( 6.1 ) in the middle and then on 6 channels ( 9 ). The exhaust air ( 10 ) flows over 6 channels ( 10 ) to the outside into corresponding channels of the invisible outer element ( 6.1 ).

For adaptation to different thicknesses of the outer walls ( 17 ) can be cut to length elements or telescopic elements with approximately the same cross-section between element ( 6 ) and Au Outer element ( 6.1 ) and connected tightly with it.

Sketch 6:

This sketch shows that in the wall ( 17 ) lying tube ( 18 ) for receiving the fan unit, the telescopically telescoping tubes ( 19 ) and ( 20 ) with pulley ( 21 ), Rope ( 22 ) and centering element ( 23 ) for the external attachment of the outer element ( 6.1 ) or the weather protection element ( 24 ).

Sketch 7:

These Sketch shows as a supplement from sketch (1b) of the parent application, an additional cross - sectional design of the heat exchanger, the for certain applications would have advantages.

Claims (27)

Compact ventilation unit with heat recovery according to the foregoing parent application 10 2005 035 712.1, characterized in that the device is constructed so modular that the fans for supply and exhaust not only in the inner tube, but also outside the inner tube and thus the heat exchanger with a larger diameter than the inner tube and smaller diameter than the outer tube to the heat exchanger can be plugged. Compact ventilation device according to claim 1, characterized in that each fan has its own engine has, the engines back on the back sit on a fastener so that the fans in opposite direction are appropriate, but in the same or in the opposite direction. Compact ventilation device according to claim 1 to 2, characterized in that each fan in one cylindrical duct system, so that sucked by the fan or blown flow medium aspirated from a suction or blown into a blow-out is, with the intake fan no connection to blow-out and the exhaust fan has no connection to intake ducts. Compact ventilation device according to claims 1 to 3, characterized in that connects to the heat exchanger, a first intermediate piece, with separate channels for and exhaust air, as well as an integrated fitting for closing and opening the Bypass channels, whereupon the channel module for the inside fan followed by separate inlet and outlet channels, then a channel module according to claim 2, which carries a fan motor on each side and also contains strictly separate inlet and outlet channels, whereupon the channel module for the outside fan with separate inlet and outlet channels follows, on which the Exterior elements with Intake filters, supply and exhaust air ducts, Rain and wind protection and possibly other functional modules attachable are. Compact ventilation device according to claim 1 to 4, characterized in that mentioned in claim 4 Modules (1 to 4) inseparable down to the outer elements connected to each other. Compact ventilation device according to claim 1 to 4, characterized in that mentioned in claim 4 Modules with detachable, e.g. Plug connections with snap closures connected separable from each other are. Compact ventilation device according to claim 5, characterized in that the modules mentioned in claim 4 connected to an activatable by induction current adhesive and, if necessary, by applying a suitable induction current as well are again separable from each other. Compact ventilation device according to the present claims, characterized characterized in that the first outer intermediate piece with snap elements on the inner tube and outer tube is attached so that it is close to the inlet and outlet ducts of the heat exchanger is pressed. Compact ventilation device according to the present claims, characterized characterized in that on the inside of the heat exchanger, a module with Intake and exhaust channels is connected, on which the inner element with suction and exhaust openings dense but solvable (Snaps etc.) is infectious. according to previous claims, characterized that the channels of the heat exchanger for the feed of outside air be closed by an element moved in the bypass tube, when on the outside the feed channels to the bypass open are. according to claim 10, characterized in that at execution the bypass with closing elements, at the inner tube ends of the heat exchanger lie, both mixing and / or closure elements mechanically over a Kinematics or electromechanical or with mechatronic elements are connected so that the same or for special cases also different ways this e.g. cylindrically executed Elements are covered during mixing. according to claim 11, characterized in that the mixing and / or closing elements as zy are formed in the inner tube sliding tubular slide. Compact ventilation device according to the preceding claims and in particular claim 12, characterized in that in these tubular sliders through inserted foam parts or foam-covered channel elements the bypass air flow is deflected so that it transmits as little noise as possible. Modular compact ventilation device according to the present claims, in particular Claim 13, characterized in that especially the bypass inner tube but also other channel and exterior elements according to the latest state of the art executed or coated, that noise transmission is reduced. Compact ventilation device according to the preceding claims, characterized characterized in that the e.g. Radial fans for certain Embodiments have curved forward leaves, with a slight twisting / twisting in the direction of the media flow and slightly bevelled Outer edges / airflow separation edges accomplished are. Compact ventilation device according to the preceding claims, characterized characterized in that the controller has a plurality of time-limited, exactly defined speed ranges and thus characteristic, psychoacoustically advantageous frequency spectra allowed. Compact ventilation device according to the preceding claims, characterized characterized in that the fan modules for noise reduction the outside wall side (Outside d. WT) are mounted. Compact ventilation device according to the preceding claims, characterized characterized in that the fan modules for certain embodiments are installed indoors. Compact ventilation device according to the preceding claims, characterized in that for the assembly of the large exterior elements 6.1 a telescopic tube ( 19 ; 20 ) with pulley ( 21 ) in the receiving tube ( 18 ) and the rope end with a centering gripper 23 is equipped, on which the pre-assembled outer element pulled up, centered and with snap closure on the receiving tube ( 18 ) is attached. (Sketch 6) Compact ventilation device according to the preceding claims, characterized characterized in that surfaces of inside the heat exchanger adjacent module, partial surfaces the heat exchanger foils and / or surfaces (Partial areas / total area) of the stationary and moving by-pass elements with heating foils or heating coatings be provided in such a way that or control the incoming one Additional air heatable is. Compact ventilation device according to the preceding claims, characterized characterized in that the outsides the intake ducts so oriented to the winter sun radiation and coated, or are designed according to the state of solar thermal technology, that sucked fresh air in sunlight before the heat exchangers preheated and this effect by twisting and removing the elements is avoidable in the summer. Compact ventilation device according to the preceding claims, characterized characterized in that part surfaces or the total area the outboard Elements for certain embodiments by integrated photovoltaic for generating direct current for reduction the own energy requirement can be used; in combination with suitable storage elements. Compact ventilation device according to the preceding claims, characterized characterized in that inner and outer surfaces of the outside elements with Peltier elements or Seebeck elements are so occupied that depending on temperature differences and requirements with Peltier elements the cooling effect improves or reduces the power requirement with Seebeck elements, or for all necessary situations the possibilities the Peltier and Seebeck effects are usable. Compact ventilation device according to the preceding claims, characterized in that the outside lying on the facade wind and rain protection elements ( 6.1 ) with functional surfaces according to claims 21, 22 and 23, an informed on building location, installation height and main wind direction round-sharing and design of the intake and exhaust openings to cause at least in the micro pressure range a certain balance of back pressure / pressure and suction / vacuum. Compact ventilation device according to the preceding claims, in particular Claim 24, characterized in that by measuring the volume flow and / or use of state-of-the-art pressure sensors Effects of clogged filters and high wind pressure due to speed adjustments the motors are compensated. Compact ventilation device according to the preceding claims, characterized in that the heat exchanger according to sketch 7 consists of concentric thin tube elements with dividers, said cross-section extruded or with others suitable methods of various suitable materials can be produced. Compact ventilation device according to the preceding claims, characterized in that between module ( 6 ) and outer element ( 6.1 ) Extension elements with fixed lengths or telescopic extension elements can be installed.