EP2095052A1

EP2095052A1 - Compact fan, comprising a heat exchanger with integrated or attached ventilators

Info

Publication number: EP2095052A1
Application number: EP06846931A
Authority: EP
Inventors: Josef Bachmaier
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-31
Filing date: 2006-10-31
Publication date: 2009-09-02
Also published as: WO2008052493A1; DE112006004190A5

Abstract

The invention relates to a coiled heat exchanger (WT), which has 360° channels (K1 - K6) following one after the other from the inside to the outside, wherein the first exchange medium (A) is admitted to the first channel and the second exchange medium (B) is admitted to the following channel in countercurrent, with some open and some closed annular passages, which form annular elements for the inflow and outflow of the exchange media (A, B) in such a way that lying approximately opposite an open sector of the annulus on one side of the heat exchanger there is a closed sector of the annulus on the other side of the heat exchanger and that the media flows (A, B) are thereby brought together at the extreme ends with the aid of segmental distributor caps (AK, AbK). It is proposed that, by attaching and/or integrating suitable feeding equipment, in particular ventilators (RLK, RLWK), pumps or feed membranes, and by means of routing the channels in the covers or adapters in such a way as to match the segmental connection areas of the heat exchanger, the heat exchanger (WT) is formed as a compact unit, in particular for air-to-air heat exchange in a device for controlled building ventilation with heat recovery.

Description

Compact fan, consisting of heat exchangers with integrated or docked fans

Title:

Compact fan, consisting of heat exchangers with integrated or docked fans

Field of use:

The invention relates to a heat exchanger, e.g. by docked and / or integrated fan to compact ventilation unit with heat recovery in the countercurrent exchange method is used, for. as a decentralized ventilation device in the outer wall of rooms or containers or in larger ones

Embodiments also as a central ventilation system, so everywhere where very compact devices are needed, especially for retrofitting in old buildings.

In an analogous manner, the heat exchanger with pumps for heat transfer in liquid

Exchange media are used.

State of the art:

Example 1 :

The invention relates to one-, two- or mehrblättrig wound heat exchanger with preferably circular inner tube for bypass and a preferably also circular outer tube for the protection of the wrapping film and the built-in fuse, which is independent of how many films wound, separate 360 ° channels for min 2 forms exchange media, wherein the 360 ° circular rings are partially closed on both sides and partially kept open, such that circular ring segments with eg 2x180 °, 4x90 °, 6x60 °, 12x30 ° (with 2 exchange media the segment number can be divided by 2, with 3 exchange media the segment number can be divided by 3, eg 3x120 °), whereby an open circular segment on one side of the heat exchanger tube has a closed circular segment On the other side of the same channel is approximately opposite, whereby a segment for the exchange medium A is opened and the left and right adjacent segments for the exchange medium B are opened, etc., according to parent application Dt. PA 10 2004 046 587.8-16 from 23.09.04.

With a division into 12x30 ° segments, therefore, there are six segments for the exchange medium A and six segments for the exchange medium B. For 3 exchange media and 3-sheet winding, 4 segments for medium A, 4 segments for medium B and 4 segments for medium C.

Reserves of this prior art:

Such manufactured heat exchangers must at both ends with supply and exhaust air ducts, as well as with

Fans or pumps are tightly connected and without longer connecting lines so that the outwardly increasing Kreisringteilstück channels are uniformly applied to the exchange medium, which does not seem to be easy when analyzing the devices on the market.

The possible improvements are not trivial, but because of complicated canal guides extremely difficult to design. Step Example! 2:

The invention is also oriented to a heat exchanger of similar shape, but which is not made by winding, but by other manufacturing methods, e.g. as in the patent application Dt. PA 10 2005 035 712.1-16 of 27.07.2005 described by the same applicant. In this design, fans / pumps can be housed in the inner tube and passed through slots with the channels A, B and C, e.g. be connected for 3 or even for 2 exchange media.

Disadvantages of this state of the art:

Heat exchangers of the type described in example 2 are considerably more expensive to produce than wound heat exchangers, do not achieve the same high efficiency when e.g. made of extruded aluminum, so have very limited applications, but also benefits for special applications.

Object of the invention:

1. A wound or extruded / extruded o.a. Method produced cylindrical heat exchanger with annular cross section, as well as with internal pipe for bypass and external pipe as Einbauschutz, is intended for. for air-air heat exchange processes, with as full cross-sectional utilization of the inner and outer tube (in the wall) by integration or addition of suitable media conveyor, filter, sensor and control technology are combined into a compact device, with optimized supply and discharge of the media, i. into and out of the heat exchanger.

2. Piping, heat exchangers, filters, control technology and fans should be summarized so compact that this cylindrical unit can be accommodated in a wall bore by simply inserting and sealing.

3. The amortization of this device should be done by energy savings.

4. The fans should balance the wind pressure influence as much as possible by appropriate control. Their arrangement should be such that the individual channels of the WT are equally well acted upon.

5. The device should also be suitable for dehumidification or to prevent mold formation.

6. Reduction of the noise by the device itself

7. Prevention of the ingress of external noise through the device into interiors and vice versa

8. Designing the remaining residual noise with a noise level and a frequency spectrum indicating the concentration on the work, e.g. in an office and / or falling asleep, e.g. relieved in a bedroom or nursery

9. Cost-effective installation of the device only from the inside to avoid the erection of ladders and external scaffolding for attachment of external components

10. Prevention of ice formation in the heat exchanger and in external parts of the fan at low outside temperatures

11. Use of the bypass channel for night cooling in summer

12. Use of external elements for solar heat gain in winter

13. Use of the external elements for the generation of direct current to reduce the own energy demand, possibly up to the energy self-sufficiency

14. Design of the exterior elements to reduce the influence of wind pressure

15. Use of the fan element as additional heating for individual temperature increase in certain rooms, eg passive houses Solution of the task:

Example 1:

The wound heat exchanger of the parent application then offers, when it is single-sheet wound with a web per turn, 2-, 4- or even mehrblättrig, the possibility from the inside to the outside alternately a channel for the exchange medium A, the next for the exchange medium B, then again to use A, etc., ie in the first winding 360 ° are available for medium A, in the second winding 360 ° for medium B, in the third winding 360 ° for medium A, etc.

If you divide these 360 ° annuli on one side of the heat exchanger into 2, 4, 6 or 8 etc. annulus segments, with each first segment the channels A and every other segment will close the channels B and so on, and the like around a segment or a certain one Angle α offset makes on the other side, you can by placing covers with eg Integrated fans (pumps) and media guide channels, which are matched to the circular ring segments receive on one or both sides of a compact fan unit (heat pump) with heat exchange / heat recovery. Instead of using covers fitted with fans / pumps outside with a WT, it is also possible to place intermediate pieces equipped with fans / pumps and corresponding media guide channels between two separate, wound heat exchanger elements.

The fan assembly according to the invention thus consists of an outer and an inner tube, as well as between the inner wall of the outer tube and the outer wall of the inner tube lying wound channels, with a cover or spacers on or used pump / fan with 2 blade rings or with 2 pump elements / Fans of which the outside for the intake of medium 1 and the inside for the suction of medium 2 are used. When arranging the fans in an intermediate piece - as a further variant - the suction of the two media takes place via the docked heat exchanger WT 1 and WT2.

These fans or pumps run around the inner axis of the two tubes, suck in a preferred embodiment in the inner tube and press the sucked medium through channels A in the openings A, the heat exchanger.

The internal fan or the internal pump act on every 2nd channel A from the inside to the outside and the external fan or pump on the outside every second channel B from outside to inside.

In some special forms or variants, the blade rings of the fans / pumps are close but tightly sealed against each other so that they can be driven by a single motor. It is preferably arranged in an inner lid, so that the supply air fan sucks in the outside air over a longer distance, ie already heated air moves.

The fan unit according to the invention is thus z.T. or completely housed in an outer tube, which is introduced into a wall bore and preferably foamed there tight. This outer tube contains electrical plug and line elements and can be connected to the in-house power grid, an integrated guide element together with insertion funnel and preferably associated electrical. Contain contact elements, so that the fan unit is automatically electrically connected after insertion in the end position.

Before inserting the fan unit, the outer elements can be preassembled with the help of a cord and a cyl. Fastening device with centering aid pulled outwards on the façade; turned from the inside to the fastening position and then tightly fastened with snaps on the pipe.

Depending on the variant, transformers and / or power supply can be introduced with the outer tube or integrated in the fan unit.

The modular fan unit can be easily removed and replaced by loosening one or more snap connections for maintenance purposes, eg for cleaning or replacing filters. Step Example! 2:

In heat exchangers, according to Example 2, according to the invention outside the heat exchanger and the inner tube lying fans with a diameter which is larger than the inner tube, in a similar manner as described above, by partially opening and closing the curved channels and use of lids with channels, which are arranged as circular ring sectors are realized, and while maintaining inner and outer slots in the heat exchanger type 2, by annular insert elements with collecting channels for media A or B, which are adapted to the air supply and air discharge of the fans.

Advantages of the invention:

1. The unit is very compact and space-saving

2. The unit requires low installation costs both during manufacture and during installation

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. Equal distributed or equivalent media flow in all channels

7. Streamlined arrangement of the fans to the air ducts in the lid and to the channels in the heat exchanger

8. It is possible to integrate a bypass

9. Economic design structure, since the heat exchanger is simultaneously a major part of the housing

10. Any diameter freely selectable or optimally adaptable to the use and the installation situation

11. Lengths also adaptable to the use and installation situation

12. The optimization potential of the extended tasks can be exploited particularly well with the modular structure and the integrated approaches.

Description of the invention:

Several embodiments are shown as figures and are described in more detail below:

Fig. 1:

This figure shows sections through the top and bottom of the heat exchanger and above that

Power unit with 2 fans and below the end cap with channels for

Exchange media guide.

Position of the cuts, segmentation of the heat exchanger, and movement of the exchange media may be well over Figure 2, the top views of the top sides of the WT and the bottom side of the WT (seen from above), and Figure 3 showing a perspective view of the WT be followed

(WT = heat exchanger)

Exchange medium B, e.g. Cool room air is sucked centrally in this embodiment by a radial fan RLK and then pressed into 6 segment channels K1 - K6 Aufsetzkappe (AK). The air flows through the WT approximately in the axial direction and exits on the other side via the segment channels k1, k2 of the end cap (AbK) into the open air.

In this way, the warm outside air in summer, which flows through the channels A for exchange medium A, is cooled, i. Cooling recovery in the summer.

The outside air, i. Exchange medium A is sucked in via a radial fan (RLWK) from channels A of sector k4 (sectional view) and the remaining segment channels k1, k2, k3, k5, k6 and blown into the room via exhaust openings.

These 6 exhaust ports can be summarized via a ring channel, not shown, and replaced by one or two larger openings.

Fig. 2:

This figure shows the position of the cuts of FIG. 1 and applied dark, which channels in the 12 segments K1-K6 / k1-k6 are kept open at the top and bottom (white) or closed (black). It can be seen that the air (B) flowing in at K1 (above) is distributed in the 3 channels (360 °) B1-B3 and flows out on the other side of the heat exchanger via the channel openings k1, k2, etc.

3:

This figure shows in perspective the relationships described above.

4:

This sectional view shows two heat exchanger elements WT1 and WT2, which correspond to a variant embodiment according to FIGS. 9 and 10 of the parent application, here attached as FIGS. 6 and 7. The conveying unit FE is located between the WT elements WT1 and WT2. The radial fan (RLK) sucks in cool indoor air (K) via the channels 20.1-20.3 of WT2 and the channel segment KS1 and pushes the air via channel segment KS2 into the channels 20.1 to 20.3 of the second heat exchanger WT1.

Similarly, radial fan RLWK sucks warm outside air via the channels 21.1-21.3 of the external heat exchanger WT1 via channel segment KS3 and pushes the air via channel segment KS4 into the channels 21.1-21.3 of the internal heat exchanger.

Fig. 5:

This figure shows a plan view of heat exchanger WT 1 or WT2, which correspond to the design variant of the embodiment (Figure 9 and 10) of the parent application. This plan view shows in principle the ducting of the outer caps of the heat exchanger WT 1 and WT2, wherein the air duct (K) to the inside and (WK) can be done to the outside in the second heat exchanger in the reverse direction, depending on the attachment of the cap.

6 and 7:

These figures have been included to better understand Figs. 4 and 5, as well as Figs

Schematic representation for explaining the variant according to FIG. 8. This variant of the WT can be wound in a similar manner as the variant according to FIG. 9 of the main application (see FIG. 6) or also produced by the fact that polygon pipes of different diameter, here shown with 8 square pipes, have half their pitch, here around 1 / 16 twisted into one another (see claim 38)

sc

This figure shows a winding shape, which, in contrast to the winding manner shown in FIG. 2, does not have a helical cross-section, but resembles nested tubes of increasing diameters. In addition to the upper illustration, with subdivision into 6 circular ring segments, the winding course is shown, through which the required separating webs (TS) are automatically formed for the single-leaf heat exchanger WT.

Fiα. 10:

This illustration corresponds to FIG. 1, but additionally shows how the bypass valve BV is accommodated in the inner tube and via a connecting rod (V) moves the tube slide (RS) upwards during opening, so that the channel segment (KS) is first partially closed for mixing. When the bypass valve (BV) is fully open, it is completely closed and allows 100% bypass.

The bypass valve (BV) itself is moved by the servomotor (SM), controlled depending on sensor data)

Fiα. 11:

This representation corresponds approximately to the embodiment of FIG. 4, but was supplemented by the bypass technique of FIG. 10 and the integration of filters (Fi and Fa). Filter (Fa) absorbs particles from the outside air and filters (Fi) those of the inside air, which is advantageous for keeping clean the exchange channels of the heat exchanger (WT), also the fan motors and the bypass seals. If a bypass valve is sufficient, the inner tube must be closed with a sealing cap (VK) on the opposite side.

Fig. 12:

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), support module (5) for fan motors and fans and Fan housing (6) without outer cover and weather protection.

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

Fig. 13:

Shows the same plug-in unit from the other side / outside. You can see the fan housing 6 with the radial fan (6.2), and 6 exhaust ports for the exhaust air streams (10), which deflected radially outward in the outer element, but can also be combined arbitrarily. The fresh air inflow (9) runs in the middle of the fan (6.2) and is forced into external ducts, which are routed through the modules (5, 4) and (3) into the designated channels of the WT (1).

Fig. 14:

Shows in perspective the interior of the unit. You can follow how the supply air flow (9) through the

Fan (6.2) through the channels of the modules (5,4 and 3) in the heat exchanger (1) to be deflected inward at its right end in module (2), where he then centrally as a fresh air inlet (7) via a not Visible cover (2.1) is blown directly or deflected into the interior.

It can be seen that the fans (6.2) and (4.2) are driven on one side by the motors (6.3) and (4.3).

On the lower side of the cut can be traced the countercurrent as exhaust air stream (8), which enters 6 in the jacket of the module (2) mounted openings, sucked by the WT (1) and the channels of the module (3) from the fan (4.2) and from the housing (4) via channels in (4), (5) and (6) to not visible outer element (6.1) is blown, where it is redirected in the form of 6 exhaust air streams (10) into corresponding channels of the outer element (6.1).

Slide elements (12) and (13), which can be moved by a motor (15) with the aid of kinematics elements (16), are located in the bypass tube (11) in such a way that, to avoid icing of the heat exchanger (1), an air flow ( 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 slide (12) and corresponding closing of the slide (13) cool night air as an influx (14) are led inwards.

Fig. 15:

This sketch shows the inner module 2 with its annular area arranged sealing surfaces (25), wherein the fresh air sectors of the wound heat exchanger (1) incoming air streams (7) are diverted to the center, while flowing to the exhaust air sectors of the heat exchanger flows (8) Shell openings are sucked into the heat exchanger (1).

Fio. 16:

This figure shows the top view of the module (6) with fan wheel (6.2), which receives the fresh air (9) from the outer element (6.1) center and then distributed to 6 channels (9). The exhaust air (10) flows through 6 channels (10) to the outside in corresponding channels of the non-visible outer element (6.1).

To adapt to different thicknesses of the outer walls (17) can be set to length cut elements or telescopic elements with approximately the same cross-section between element (6) and outer element (6.1) and connected tightly thereto.

FIQ. 17:

This figure shows that in the wall (17) lying tube (18) for receiving the fan assembly consisting of telescopically telescoping tubes (19) and (20) with pulley (21), rope (22) and centering element (23) the external fastening of the outer element (6.1) or of the weatherproof element (24).

Fig. 18:

This figure shows as a supplement Figure (1b) of the application (10 2005 035 712.1-16) an additional

Cross-section of the heat exchanger, which would have advantages for certain applications.

This figure shows in the lower part cylindrical insert elements (inside) and 10 (outside) with circular collecting channel cross-sections.

Fan (4.2) presses medium A via collecting channel (9) and slots (8.2) into the channels AI - An, while fan (4.1) sucks medium B via collection channel (10) and slots (8.3) from channels B1 - Bn.

Claims

Protection claims:

Claim 1:

Coiled heat exchanger with 360 ° channels consecutive from inside to outside, in which the first channel is countercurrently charged by the first exchange medium and the next channel by the next exchange medium with partially open and partially closed circular ring channels, the circular segments for the inflow and outflow of the exchange Form media such that an open circular ring piece on one side of the heat exchanger is a closed Kreisringstück on the other side of the heat exchanger approximately opposite and that while the media streams are summarized using segment-shaped distributor caps on the front pages, according to the foregoing parent application Dt , PA 10 2004 046 587.8-16 from 03.09.2004, characterized in that the heat exchanger by docking and / or integrating suitable conveyor technology (fans, pumps, conveyor membranes), for the candidate exchange media and one to the segment-shaped pads of the heat exchanger suitable ducting in the covers or spacers to a compact unit for heat exchange, eg designed for air-to-air heat exchange to a controlled ventilation unit with heat recovery.

Claim 2:

Heat exchanger whose channels between the inner wall of an outer tube and the outer wall of an inner tube either

- are wound according to 2004 046 587.8-16, or

- According to 10 2005 035 712 1-16 are arranged, characterized in that the heat exchanger by docking and / or integration of suitable conveyor technology (fans, pumps, delivery membranes) for the candidate exchange media and a matching to the segment-shaped pads of the heat exchanger

Channel guide in the covers or spacers (102005 045 734.7)

or via slots in the inner tube (10 2005 035 712.1) to a cylindrical compact apparatus for heat exchange, e.g. designed for air-to-air heat exchange to a controlled ventilation unit with heat recovery.

Claim 3:

Ventilation unit according to claim 2, characterized in that the one or more fans are located in the inner tube with one or two motors and the channels usually required between heat exchanger and fan omitted, or are formed by slots.

Claim 4:

Ventilation unit according to claim 2, 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, as the outer tube are docked to the heat exchanger.

Claim 5:

Ventilation unit according to claims 2 and 3, characterized in that external and internal fans are located at the outer ends of the tube in the pipe system, so that each heat exchanger channel only one inlet and one outlet slot, or an inlet or an outlet opening.

Claim 6:

Ventilation unit according to claims 1, 2 and 4, characterized in that the fans / pumps are arranged in a lid member back to back sealed against each other, connected to one or two separately controllable motors, the motors can run in the same or opposite directions; such that the internal fan draws air from the heat exchanger via open circular ring segments, while the external fan draws air from outside the room Suction lid member and blows into the countercurrent passages of the heat exchanger, also via one or more circular ring segments, depending on how the 360 ° are divided.

Claim 7:

Ventilation unit according to claims 1,2 and 4, characterized in that each fan is seated in a cylindrical channel system, so that sucked by the fan or blown flow medium is sucked from a suction or blown into a blow-out, the suction fan no connection to blow-out and the exhaust fan has no connection to intake ducts.

Claim 8:

Fan unit according to claims 1 to 7, characterized in that in the inner tube, a closable bypass flap or a bypass valve is mounted, which (s) via a servomotor and / or a linkage partially or completely in response to a specific switch position of the control device or relevant sensor data can be opened and closed.

Claim 9:

Fan unit according to claims 1 to 7, characterized in that in combination with - or separated from a bypass valve or a valve - also on the same or separate actuators, and the same or separate linkage addition to an inlet or an exhaust duct are partially or completely closed can, for example through a specially shaped tube in the pipe, whereby the bypass valve is designed as a mixing valve, mixing flap or 100% bypass, depending on the opening state.

Claim 10:

Fan unit according to claims 1, 2 and 4, characterized in that connects to the heat exchanger min. A first intermediate piece, with separate channels for supply and exhaust air, and an integrated fitting for closing and opening the bypass channel, whereupon the channel module for the inside arranged fan with separate inlet and outlet channels follows, then a channel module according to claim 6, 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 supply and Flow channels follows, to which the outer elements with suction filters, supply and exhaust air ducts, rain and wind protection and possibly other functional modules are plugged.

Claim 11:

A fan unit according to claims 1, 2 and 4, characterized in that the modules (1 to 4) mentioned in claim 10 except for

Exterior elements are inseparable from each other.

Claim 12:

A fan unit according to claims 1, 2 and 4, characterized in that the modules mentioned in claim 10 are provided by detachable, e.g.

Plug connections with snap closures are separably connected.

Claim 13:

Fan unit according to claims 1, 2 and 4, characterized in that the modules mentioned in claim 10 are connected to an activatable by induction current adhesive and, if necessary, by applying a suitable induction current again separated from each other.

Claim 14:

Fan unit according to claims 1, 2 and 4, characterized in that the first outer intermediate piece is fastened with snap elements on the inner tube and outer tube so that it is pressed tightly against the supply and exhaust air ducts of the heat exchanger. Claim 15:

Fan unit according to claims 1, 2 and 4, characterized in that on the inside of the heat exchanger, a module with suction and Ausblaskanälen is connected to which the visible inner element with suction and exhaust openings tightly, but releasably (snaps etc.) can be attached.

Claim 16:

Fan unit according to claims 1, 2 and 4, characterized in that the channels of the heat exchanger for the supply of outside air are closed by a moving element in the bypass tube when the supply channels are open to the bypass on the outside.

Claim 17:

Fan unit according to claims 1, 2 and 4, and 8 and 9, characterized in that when the bypass with closing elements, which are located at the inner tube ends of the heat exchanger, both mixing and / or closure elements mechanically via a kinematics or electromechanically or with mechatronic elements are connected so that the same or for special cases also different ways this example cylindrically executed elements are covered during mixing.

Claim 18:

Fan unit according to claims 1, 2, 4, 8 and 9, characterized in that the mixing and / or closing elements are designed as cylindrical tubular slides sliding in the inner tube.

Claim 19:

Fan unit according to claims 1, 2, 4, 8 and 9, characterized in that in these tubular sliders by inserted foam parts or foam occupied channel elements of the bypass air flow is deflected so that it transmits as little noise.

Claim 20:

Fan unit according to claims 1, 2, 4 and 9, characterized in that above all the bypass inner tube but also other channel and outer elements according to the latest state of the art are designed or coated so that noise transmission is reduced.

Claim 21:

Fan unit according to claims 1, 2 and following, characterized in that the fan modules for noise reduction on the outer wall side (outside d. WT) are mounted.

Claim 22:

Fan unit according to claims 1, 2 and following, characterized in that the fan modules for certain embodiments in

Interior are attached.

Claim 23:

Fan unit according to claims 1, 2 and 4, characterized in that the fans / pumps are arranged in an intermediate piece back to back from each other tightly connected to one or two separately controllable motors, such that the one fan (which is a pump) via a circle segment or an inner or outer row of slots, the exchange medium A sucks from the outer heat exchanger 1 and presses in the inner heat exchanger 2, while the other fan (the other pump) via an analog shaped circular segment or an outer or inner row of slots the exchange medium B sucks from the inner heat exchanger 2 and blows in the outer heat exchanger 1, wherein this can be done with one or more circular segments per exchange medium. Claim 24:

Fan unit according to claims 1, 2 and 4, characterized in that the docked on both sides fans / pumps are driven by a seated in the middle of the inner tube motor, via a shaft from its position in about the middle of the inner tube with the outer fans / Pump is connected.

Claim 25:

Fan unit according to claims 1, 2 and 4, as well as 23 and 24, characterized in that the fans or pumps are designed for a different volume flow, i. When driving with only one motor have different sizes and drive with 2 motors have both different sizes, and can run at different speeds.

Claim 26:

Fan unit according to previous claims, characterized in that the e.g. Radial fans for certain embodiments have forward curved blades that are designed with a slight twisting / twisting in the direction of media flow and slightly tapered outer edges / Luftstromabrißkanten.

Claim 27:

Fan unit according to the preceding claims, characterized in that it by the fan motors / pump motors and in the media flow integrated and / or mounted outside the device sensors for pressure, temperature, media quality, media ingredients, etc., as well as a control unit to a device for controlled media exchange Heat recovery is.

Claim 28:

Fan unit according to the preceding claims, characterized in that the controller has a plurality of time-limited, precisely defined

Speed ranges and thus characteristic, psychoacoustically advantageous frequency spectra allowed.

Claim 29:

Fan unit according to the preceding claims, characterized in that for the fan motor depending on the application temperature control,

Pressure difference control or air flow control can be provided.

Claim 30:

Ventilation unit according to previous claims, characterized in that the bypass control is provided by temperature-controlled elements, e.g. one

Bimetallic element can be made.

Claim 31:

Fan unit according to claims 1, 2 and 4, characterized in that the heat exchanger of trapezoidal exchange foils is wound so that it extends on one or both sides of a shorter inner tube to the longer outer tube conical outward and vice versa with a longer inner tube and a shorter outer tube, fan / Pump are integrated in a cover element with segmental channels for the exchange media and are docked on one or both sides so that the exchange media flow runs in countercurrent as in the previous versions.

Claim 32:

Fan unit according to claims 1, 2 and 4, characterized in that by a corresponding blank of the winding film of

Heat exchanger does not receive a cylindrical shape with cylindrical inner tube and cylindrical outer tube, but the shape of a truncated cone with a cylindrical or frusto-conical inner tube and truncated conical outer tube or truncated conical inner tube and cylindrical

Outer tube. Claim 33:

Fan unit according to claims 1, 2 and 4, characterized in that the outlets of the inlet and outlet channels are arranged on the cover elements in the opening direction so far away from the parting planes between the heat exchanger and lids and / or the intermediate element, that a short circuit between Ab - and inflow is avoided.

Claim 34:

A fan unit according to claim 1, characterized in that for the wound heat exchanger a lightly structured film of material suitable for heat exchange purposes, e.g. Aluminum, plastic, thin stainless steel is used so that intended for the optimization of the heat exchange process coarser structure does not wrinkles during winding.

Claim 35:

Fan unit according to claim 1, characterized in that the winding film receives straight, oblique wavy, free-formed, slight Fältelungen before winding, to increase the surface area and to convert the laminar flow in turbulent flow.

Claim 36:

Fan unit according to claim 1, characterized in that the winding film receives characteristics as spacers, which are e.g. cone-shaped, with a rounded cone point are formed.

Claim 37:

Fan unit according to claim 1, characterized in that the winding film have characteristics with distance maintaining line contact, with sufficient space for the flowing medium in the channels.

Claim 38:

Fan unit according to claim 1, characterized in that as spacers in the channels pleated, corrugated and / or perforated intermediate layers are used as spacers.

Claim 39:

Fan unit according to claim 1, characterized in that the spacers or spacer elements or spacers allow different distances between the individual turns, e.g. to optimize the volume flow in the individual channels between inside and outside.

Claim 40:

Fan unit according to claim 1, characterized in that is used as a spacer during winding gelatin for both einblättrig wound and for mehrblättrig wound heat exchanger, this material can then be washed out when the heat exchanger after winding and the segment-like partial closing of the annular Channels has gained enough stability.

Claim 41:

Fan unit according to claim 1, characterized in that on both sides of the winding film lamellae / projections are attached, which serve both as a spacer, and to increase the exchange surfaces.

Claim 42:

Fan unit according to claim 1, characterized in that a 3-bladed coiled heat exchanger is used, whereby also 3 separate channels are formed, wherein the first channel for the exchange medium A, the second channel for the exchange medium B and the third channel for an exchange medium C, a backup medium or as a free security channel can be used. Claim 43:

Fan unit according to claim 1, characterized in that embossing and profiling to improve the

Heat transfer and to influence the flow conditions are not evenly distributed over the entire heat exchanger surface, but that prevail in the input and output area smooth surfaces and in between everything is shaped or that smooth and embossed surfaces follow each other.

Claim 44:

Fan unit according to claims 1, 2 and 4, characterized in that for the exchange surfaces e.g. the wrapping film uses a material that allows the passage of partial or total water molecules, so that moisture recovery is possible.

Claim 45:

Fan unit according to claims 1, 2 and 4, characterized in that the exchange surfaces, e.g. the wrapping film is coated on one or both sides, partly or wholly with a moisture absorbing material.

Claim 46:

A fan unit according to claims 1, 2 and 4, characterized in that the surface of the exchange surfaces, e.g. the surface of the wrapping film to improve the heat absorption capacity by suitable processing methods, such. Etching, coating, textured rolling technology is processed.

Claim 47:

Fan unit according to claim 1, characterized in that the einblättrigen winding of the heat exchanger after each 360 ° winding, a 90 ° bend is made in the length of the distance to the next winding, in which case the next 360 ° winding takes place, etc., so that at this type of Wickeins no spirally wound heat exchanger but a heat exchanger with circular channels results.

Claim 48:

Fan unit according to claims 2 and 3, characterized in that the ventilation ducts by winding film with distance-maintaining

Elements are formed and the necessary slots for this embodiment are made by a channel-guiding intermediate element.

Claim 49:

Fan unit according to claims 1, 2 and 4, characterized in that the ventilation ducts of the respective countercurrent to outdoor and

Inside are closed so that the intervening channel openings undergo an expansion to prevent capillary action.

Claim 50:

Fan unit according to claim 1, characterized in that in addition to dividers, which are necessary only in the einblättrigen winding, and flow-guiding webs are arranged in a straight, helical or free-form position in the channels while fulfilling the function of spacers in this area, and path extension cause the exchange medium for very short heat exchangers.

Claim 51:

Fan unit according to claims 1, 2 and 4, characterized in that the heat exchanger is not wound, but of concentric nested tubes with dividers according to sketch .... made of suitable material for heat exchangers and that in these pipes in the same way on the front sides annulus segments be closed and other circular segments remain open, making this type of heat exchanger can be used in the same way as the normal single or Mehrblättrig wound heat exchanger, this cross section can also be prepared by extrusion or other suitable methods of various suitable materials. Claim 52:

Fan unit according to claims 1, 2 and 51, characterized in that thin-walled extruded or thin-walled extruded tubes are used.

Claim 53:

A fan unit according to claims 1, 4 and 51, characterized in that the tubes are bent from foil and connected butt or overlapping, e.g. be made welded.

Claim 54:

Fan unit according to claims 1, 2 and 4, characterized in that instead of a single or Mehrblättrig wound heat exchanger wavy shaped tubes (according to Figure 9 and 10 of the separate application 10 2004046 587.8-16) with different diameters are plugged into each other and connected to each other the same cross-section with the same possibilities as in Figure 9 results.

Claim 55:

A fan unit according to claims 1, 2 and 4, characterized in that the heat exchanger consists of nested polygons which are twisted against each other and connected (glued, welded, etc.) at the points of contact, e.g. for a heat exchanger of octagonal pipes in the sketch ... shown.

Claim 56:

Fan unit according to claim 1, characterized in that in the einblättrig wound heat exchanger for applications in which a high pressure and temperature resistance is desired between the turns, preferably in the longitudinal direction and distributed around the circumference punctiform or short linear joints similar to spacer elements are provided.

Claim 57:

Fan unit according to claim 1, characterized in that deflections of the flow medium are effected by the use of separating webs and / or the displacement of the closed circular ring segments relative to the open circular ring segments.

Claim 58:

Fan unit according to claim 1, characterized in that the separating webs helically around the central axis of the spiral, so the longitudinal axis of the heat exchanger are arranged and the helix angle 180 ° or a multiple thereof, so that a medium in each case in the same segment of the heat exchanger and exits , eg in a horizontally arranged heat exchanger in the upper half, enters at one end face and emerges in the upper half of the opposite end face.

Claim 59:

Fan unit according to claims 1 to 4, characterized in that the inner tube with the fans mounted therein or mounted in a second inner tube and thereby can be easily removed for maintenance and cleaning purposes.

Claim 60:

Fan unit according to claims 2 and 3, characterized in that the outer tube extend from the inner wall of the ventilation ducts to the outer wall of the inner tube, is also arranged in a further tube, whereby the entire ventilation unit can be easily removed for cleaning.

Claim 61:

Fan unit according to the preceding claims, characterized in that instead of the two motors of the outside and / or inside

Fans only one engine is provided, for example, lies approximately in the middle of the inner tube and there is attached via a mounting plate on the fixed or on the removable inner tube, and is connected to the two fans on the inside and outside running waves.

Claim 62:

Fan unit according to claims 2 and 3, characterized in that the center motor is located exactly between the fan wheels and the latter are arranged either on the outer or inner side, but preferably on the latter, whereby the intake fan is always acted upon with already heated intake air, wherein the heat exchanger channel for the intake air (outside air) is interrupted in front of the intake fan, so that the air can be passed through slots to the fan and then through other directly lying in the suction fan area slots in the remainder of the heat exchanger channel. The inner tube is closed in this version with a fixed flap.

Claim 63:

Fan unit according to claim 61, characterized in that the center motor according to claims 61/62 is arranged centrally such that filters can be arranged externally, wherein the bypass valve is located between the suction filter and the suction fan.

Claim 64:

Fan unit according to the preceding claims, characterized in that on one or both sides of the heat exchanger in the inner tube or in the outer cover elements and in the equipped with inflow and outflow visible cover elements filters of all kinds on one or both sides, both in execution with bypass, as also with version without bypass, be attached.

Claim 65:

Fan unit according to all preceding claims, characterized in that filters by means of magnetic rings or magnetic elements either in

Inner tube or on the inner tube, outer tube or visible outer elements are attached.

Claim 66:

Fan unit according to all preceding claims, characterized in that all filters can be easily removed for cleaning.

Claim 67:

Fan unit according to all preceding claims, characterized in that the outer filter is provided with a rain cover.

Claim 68:

Fan unit according to all preceding claims, characterized in that the ventilation ducts are guided so that the supply air in the inner tube blows out centrally and the exhaust air is sucked into the lying around the central tube outer rim, with the possibility to install filters both inside, as on the outer rim.

Claim 69:

Fan unit according to claims 2, 3 and 4, characterized in that between the inner wall of the outer tube and outer wall of the inner tube extending channel-forming webs exactly radial, S-shaped or wavy radially or arcuately following the air flow or may be formed against the air flow.

Claim 70:

Fan unit according to claims 2, 3 and 4, characterized in that the channel-forming webs are guided arcuately so that the

Webs run parallel or slightly tapered or slightly widening distance.

Claim 71:

Fan unit according to all preceding claims, characterized in that the ventilation ducts. At least in the intake with a conductive

Coating that heats up when current flows or a heating foil are occupied, so by Power supply can be heated to prevent freezing in adverse weather conditions.

Claim 72:

Fan unit according to all preceding claims, characterized in that surfaces of the inside of the heat exchanger module, part surfaces of the heat exchanger films and / or surfaces (partial surfaces / total area) of the stationary and movable bypass elements are provided with heating foils or heating coatings so on the controller or control the inflowing air is additionally heated.

Claim 73:

Fan unit according to all preceding claims, characterized in that between the cold and the warm areas of the heat exchanger Peltier elements or elements with so-called. Seebeck effect are mounted so that electricity is given off by the temperature difference, either in addition to driving the motors or to heat the Coating or the heating foil according to claim A.3.10 can be used.

Claim 74:

Fan unit according to all preceding claims, characterized in that the power-generating elements are mounted on both surfaces of the heat exchanger channels, so that the two conductive surfaces in a channel (A) correspond to positive poles and the surface elements of the adjacent channel (B) negative poles.

Claim 75:

Ventilation unit according to all preceding claims, characterized in that inner and outer surfaces of the outer elements with Peltier elements or Seebeck elements are occupied so that improved depending on temperature differences and demand situation with Peltier elements of the cooling effect or with Seebeck elements reduces the power requirement, or for all necessary situations the possibilities of the Peltier and Seebeck effects are usable.

Claim 76:

Fan unit according to all preceding claims, characterized in that the outer wall of the wall mounted in the outer tube and optionally outer and inner wall of the outer guide tube according to claim 4 is provided with high-insulating and / or heat-reflecting coating.

Claim 77:

Fan unit according to all 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.

Claim 78:

Fan unit according to all preceding claims, characterized in that the surface of the Zuluftöffnungen deviates from the surface of the exhaust ports to correspond to the different mass flows at different temperatures of the exchange media, with corresponding effects on the segmentation.

Claim 79:

Fan unit according to all preceding claims, characterized in that vibration and / or ultrasonic generators are connected to fans and / or heat exchanger elements in order to improve the heat transfer at the exchange surfaces by applying a suitable frequency.

Claim 80:

Fan unit according to claim 1, characterized in that the partial annular segment-like closing at the two

Ends of the heat exchanger by squeezing and then immersion in solder or by Folding, welding, gluing or any other particularly suitable connection method is effected.

Claim 81:

Fan unit according to all preceding claims, characterized in that for the assembly of the large outer elements 6.1 a telescopic tube (19; 20) with pulley (21) in the receiving tube (18) is inserted and the cable end is equipped with a centering gripper 23, on which pulled the pre-assembled outer element upwards, centered and secured with snap closure on the receiving tube (18). (Sketch 6)

Claim 82:

Fan unit according to all preceding claims, characterized in that the outer sides of the intake channels so oriented for winter sun radiation and coated, or are designed according to the state of solar thermal technology that sucked fresh air is preheated in sunlight before the heat exchanger and this effect by twisting and / or removing the elements in the summer is avoidable.

Claim 83:

Fan unit according to all preceding claims, characterized in that part surfaces or the total area of the outer

Elements for certain variants by integrated photovoltaic for the production of

DC can be used to reduce the own energy demand; in combination with suitable

Memory elements.

Claim 84:

Ventilation unit according to any preceding claim, characterized in that the wind and rain protection elements (6.1) with functional surfaces according to claims 21, 22 and 23, which are located on the outside of the facade, have a round-about distribution and design of the intake air, oriented to the building location, installation height and main wind direction. and blow-out to experience at least in the micro-pressure range to cause a certain balance of back pressure / pressure and suction / vacuum.

Claim 85:

Fan unit according to all preceding claims, characterized in that by measuring the flow rate and / or use of pressure sensors according to the latest state of the art effects of clogged filters and high wind pressure by speed adjustments of the motors are compensated.