DE202007006436U1 - Flat ventilation system with heat recovery - Google Patents

Abstract

Area Ventilation device with heat recovery, the for Medium sized rooms suitable is, characterized in that the supply air fans (1) and the exhaust fans (2) as far as possible Outside on a common carrier component (3) are mounted in a core hole (7) of the outer wall of the building is arranged, said support member (3) bisected the core hole (7), so that an air inlet duct (8) and an air outlet channel (9) is formed, and that the heat exchanger unit (4) with the room-side air outlet opening (5) and the air inlet opening (6) from this carrier component (3) separated on the inside of the outer wall but above the inner opening the core hole (7) is arranged.

Description

The Ventilation of buildings with heat recovery is a technical possibility to significantly reduce energy consumption in the heating season and one often contrary to observed increase in humidity in used rooms to act. In new buildings are increasingly central ventilation systems with heat recovery installed, the whole building or building parts with preheated Supply fresh air. In the building stock can Such central equipment often can not be retrofitted because the required Air ducts from spatial Not reasons can be accommodated or because of the necessary structural changes and equipment Expenses are too expensive.

loading and venting devices with heat recovery, the for individual rooms are offered as compact devices that are on the inside the outer walls in the visible Area are attached. Affect by their dimensions she the interior design solution. Other Devices are in the window openings in additional profiles housed resemble the shutter boxes. Of the subsequent Installation of these devices requires changing the windows and reduces their glass surface. A new development represents a device behind one radiator on the outside wall is mounted and therefore not visible from the room side. The Use of this device attracts appropriate changes in the heating system after himself. With all devices mentioned so far, considerable efforts must be made be directed, the noise generated by the fans on a acceptable level too reduce.

The Reasons for the relatively small scope of application of the known decentralized solutions are mainly to look for that not infrequently the necessary changes to the building fabric and its equipment are too extensive, that the device technology and their assembly is too expensive and therefore too expensive, and that on the facade and in the room often too great functional and design impairments occur.

Just a cost-effective Solution, in the case of no already renewed components in the course of renovation changed Need to become, and at the impairment remains low on the facade and in the interior, will be in wide Enforce scope on the market.

The specified in the claims 1 to 5 invention is based on the problem to provide a ventilation device with heat recovery for rooms of medium size, which is simple in their functional and constructive structure, has only small dimensions and both in the interior and on the facade only leads to minor disturbances. The common arrangement of supply air fans ( 1 ) and exhaust fans ( 2 ) as far as possible on the outside of a support component ( 3 ) in a core hole ( 7 ) in the outer wall according to claim 1 leads to a lower noise pollution in the room than in a space nearer arrangement under otherwise identical conditions. The small size of the core hole ( 3 ) according to claim 2 open up the possibility of the core hole ( 3 ) with little effort in the outer wall, preferably in the immediate vicinity of the window, whereby the air duct hood ( 14 ), which completes the core hole outside, if necessary, can be mounted without scaffolding position. The flat heat exchanger unit ( 4 ) with its small thickness according to claim 3 is mounted on the inside of the outer wall, preferably in indirectly close to the window opening. This is an area that is often screened by the window decoration. It is also possible to sharpen the required wall surface inside (4 cm masonry and 1 to 2 cm plaster), so that the heat exchanger unit ( 4 ) can be mounted flush with the wall surface. Furthermore, it is possible to heat exchanger unit ( 4 ) to be integrated into a surface heating construction.

In order to design the heat exchanger unit according to claim 3, a suitable heat exchanger ( 10 ) be applied. This is eg the turbulence heat recovery, which was patented by the FLP GmbH. It is used in a version with a small thickness.

The exhaust air flow can contain high humidity. The flat heat exchanger unit ( 4 ) does not allow a very good thermal efficiency of the heat exchange, but also defuses the risk of condensation in the heat exchanger ( 8th ). An embodiment of the invention will be explained with reference to the accompanying drawings.

The fresh air is led to the side by the air duct hood ( 14 ), through the filter ( 13 ) located in the air intake duct ( 8th ) of the core hole ( 7 ), of the supply air fans ( 1 ) and in the air inlet channel ( 8th ) of the core hole ( 7 ) about the sound insulation components ( 12 ) in the heat exchanger unit ( 4 ). In the heat exchanger ( 10 ), the fresh air flowing through is heated by the heat of the exhaust air and leaves the heat exchanger unit ( 10 ) via the room-side air outlet opening ( 5 ), through a flap ( 15 ) is closed when the ventilation device is not in operation, as a supply air for the room, the ventilation device.

The exhaust air flows over the room-side air entrance opening ( 6 ), through a flap ( 15 ) is closed, when the ventilation device is not in operation, through the heat exchanger ( 10 ) in the heat exchanger unit ( 4 ), in which it gives off a large part of its heat to the fresh air, in the air outlet channel ( 9 ) of the core hole ( 7 ) over the sound insulation elements ( 12 ). The exhaust air flow is driven by the exhaust air fans ( 2 ), the exhaust air through the air duct cover ( 14 ) as exhaust air blow laterally into the air.

Filter ( 13 ), Supply air fans ( 1 ), Soundproofing elements ( 12 ), Exhaust fans ( 2 ) are on the support member ( 3 ) and together with this form a maintenance assembly, which consists of the core hole ( 7 ) can be pulled inwards. The wall of the core hole ( 7 ) with a heat and sound insulating, at the same time vapor-damping layer ( 11 ) lined.

Both outdoors and in the room a short circuit of the incoming and outgoing air flows must be prevented. This is done outdoors by the air duct ( 14 ) and in space by the greatest possible spatial distance between the air outlet opening ( 5 ) and the air inlet opening ( 6 ) guaranteed.

to Power supply of the fans is a room side arranged Power unit with control (not shown).

list of the figures on the drawing sheet:

1 : Vertical section through the heat exchanger unit ( 4 ), approx. M 1:10

2 : Horizontal cut through the core hole ( 7 ), approx. M 1: 2.5

List of reference numbers on the drawing sheet:

1

supply fans

2

exhaust fans

3

support component

4

heat exchanger unit

5

Air outlet opening on the room side (Supply air)

6

Air inlet opening on the room side (Exhaust)

7

Core hole through the outer wall

8th

Air inlet channel

9

Air outlet channel

10

heat exchangers

11

Heat and sound-absorbing, at the same time vapor-damping layer on the wall

of the Core hole

12

Schalldämmbauteile

13

filter

14

Air guidance hood

15

flap

Claims (5)

Flat ventilation system with heat recovery, suitable for rooms of medium size, characterized in that the supply air fans ( 1 ) and the exhaust fans ( 2 ) as far as possible on the outside on a common carrier component ( 3 ) are mounted in a core hole ( 7 ) is arranged the outer wall of the building, said support member ( 3 ) the core hole ( 7 ) halved, so that an air intake duct ( 8th ) and an air outlet duct ( 9 ), and that the heat exchanger unit ( 4 ) with the room-side air outlet opening ( 5 ) and the air inlet opening ( 6 ) of this support member ( 3 ) separated on the inside of the outer wall, but over the inner opening of the core hole ( 7 ) is arranged. Flat ventilation device according to protection claim 1, characterized in that the core hole ( 7 ) is not greater than 12 cm in diameter due to the selection and installation of the fans. Flat ventilation device according to protection claim 1, characterized in that the heat exchanger unit ( 4 ) by selecting the heat exchanger to be installed ( 10 ) and by use of heat and sound-insulating housing materials is not thicker than 6 cm, and that the air outlet opening ( 5 ) and the air inlet opening ( 6 ) are arranged so that no short circuit of the incoming and outgoing air flows. Flat ventilation device according to protection claim 1, characterized in that on the wall of the core hole ( 7 ) a heat and sound insulating, at the same time vapor-damping layer ( 11 ) that in the air inlet duct ( 8th ) in front of the supply air fans ( 2 ) a filter ( 13 ), attached to the carrier component ( 3 ), and in the air intake duct ( 8th ), possibly also in the air outlet channel ( 9 ) between the fans and the heat exchanger unit ( 4 ) Sound insulation components ( 12 ), attached to the carrier component ( 3 ), to be built in. Flat ventilation device according to protection Claim 1, characterized in that the opening of the core hole ( 7 ) on the outside of the outer wall by an air duct hood ( 14 ), which short-circuits the and prevents escaping air currents and ensures weather protection.