DE102021127067A1 - Method of operating a ventilation device - Google Patents

Abstract

The invention relates to a method for operating a ventilation device, in which, in one operating mode, the ventilation device (1) draws outside air from an outdoor environment (2) of a building (3) as supply air into a room (4) of the building (3) and Exhaust air from the room (4) is conveyed as exhaust air into the environment (2) of the building (3). According to the invention, in another mode of operation, the ventilation device (1) continues to convey outside air as supply air into the room (4), but also a window (5) in the room to form a flow path that takes the exhaust air from the room (4) with it (4) is opened and exhaust air from the room (4) flows through the window (5) into the environment (2) of the building (3).

Description

The invention relates to a method for operating a ventilation device according to the preamble of patent claim 1.

A method for operating a ventilation device of the type mentioned above is used, for example, in the ventilation device marketed by the applicant under the brand name VITOVENT 200-P. In this method, in one operating mode, the ventilation device conveys outside air from an outdoor environment of a building as supply air into a room in the building and exhaust air from the room as exhaust air into the environment of the building. During this operating mode, just as much supply air is conveyed into the room by the ventilation device as is discharged from the room. In addition, in this mode of operation, and this also applies to the solution according to the invention to be explained below, in order not to negatively influence the operation of the ventilation device, the windows of the room are usually closed or closed.

The object of the invention is to improve a method for operating a ventilation device of the type mentioned at the outset. In particular, a method for operating a decentralized ventilation device is to be created that ensures good ventilation of the room even at higher ambient temperatures.

This object is achieved with a method of the type mentioned by the features listed in the characterizing part of patent claim 1.

According to the invention, it is therefore provided that in another mode of operation, the ventilation device continues to convey outside air into the room as supply air, but also to form a flow path that takes the exhaust air from the room with it, a window of the room is opened and exhaust air from the room flows in through the window flows around the building.

In other words, the solution according to the invention is characterized in that in the other, new operating mode, the exhaust air from the room is no longer conveyed out of the room with the ventilation device as exhaust air, but instead flows out through the window into the environment. The aforesaid flow path is to be understood as meaning an air flow area that ultimately extends from the ventilation device to the window gap, in which the air flows faster than in other areas of the room.

Considered a little more closely, in the already known operating mode the ventilation device, which will be discussed in more detail below, is preferably operated according to the so-called displacement air principle. In particular, when the ambient temperature rises, the system switches to the other, new operating mode, which corresponds to the so-called mixed-air principle and in which, which will also be discussed in more detail, a ventilation short circuit that might otherwise occur between the supply and exhaust air can be avoided.

Other advantageous developments of the method according to the invention for operating a ventilation device result from the dependent patent claims.

For the sake of completeness, reference is made to the document that is further away EP 2 180 269 B1 pointed out.

The method according to the invention for operating a ventilation device, including its advantageous developments according to the dependent patent claims, is explained in more detail below with reference to the graphic representation of a preferred exemplary embodiment.

• 1 einen Aufbau mit einer Lüftungsvorrichtung zur Umsetzung des erfindungsgemäßen Verfahrens.

It shows schematically

• 1 a structure with a ventilation device for implementing the method according to the invention.

In 1 shows a ventilation device for carrying out the method according to the invention, in which, in one operating mode, the ventilation device 1 delivers outside air from an outdoor environment 2 of a building 3 as supply air into a room 4 of the building 3 and exhaust air from room 4 as exhaust air into the environment 2 of building 3 is funded. Provision is particularly preferably made (in a manner known per se) that in this operating mode the ventilation device 1 conveys just as much supply air into the room 4 as exhaust air from the room 4 .

In said operating mode, the ventilation device is preferably operated according to the so-called source air principle (see in particular https://de.wikipedia.org/w/index.php?title=Quelll%C3%BCftung&oldid=210532200), i. H. the supply air (fresh air) is introduced into the room 4 to be ventilated with little impulse. It is preferably provided in a manner known per se (although not shown separately) for the supply air to be introduced into the room via an outlet opening near the floor on the ventilation device 1 .

What is essential for the method according to the invention is that, in another operating mode, the ventilation device 1 continues to convey outside air as supply air into the room 4, but also that a window 5 of the room 4 is opened to form a flow path that takes the exhaust air from the room 4 with it and exhaust air from the Room 4 flows through the window 5 in the area 2 of the building 3. In said other mode of operation, the ventilation device is preferably operated according to the so-called mixed-air principle.

In all of this, it is particularly preferred that a change from one operating mode to the other is switched as a function of an ambient temperature prevailing in the surroundings 2 of the building 3 . This takes into account the fact that the displacement air principle deteriorates with increasing ambient temperature or no longer works at all above a certain temperature. It is therefore particularly preferably provided that the ventilation device 1 generates a prompt to open the window 5 from a predefined ambient temperature. Said predefined temperature can be fixed as a function of the room temperature. For example, it is preferable to switch to the other operating mode when the room temperature is less than 3° Celsius above the ambient temperature.

In order to ensure safe operation of the ventilation device 1, provision is also preferably made for the ventilation device 1 to detect an open state of the window 5, preferably with a sensor arranged on the window (not shown separately), and for the other operating mode to be switched on only when the window 5 is (actually) open.

Looking at it a little more closely, in order to implement the requirement according to the invention, it is preferably specifically provided that in the other operating mode a conveying device 1.1 for conveying the exhaust air from the room 4 into the environment 2 of the building 3 is switched off, i. H. the exhaust air can only reach the environment via the window 5 . In other words, it is preferably provided that in the other operating mode, 0% of the exhaust air from the room 4 is discharged via the ventilation device 1 and 100% via the window 5 to the environment 2 of the building 3 .

Finally, in order to ensure good mixing of the air in the room 4 in the other mode of operation, it is also preferably provided that the ventilation device 1 is positioned in the room 4 at a minimum distance of 3 meters from the window 5 .

Reference List

1

ventilation device

1.1

conveyor

2

Vicinity

3

Building

4

Space

5

Window

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• EP 2180269 B1 [0009]

Claims (9)

Method for operating a ventilation device, in which, in one operating mode, the ventilation device (1) uses outside air from an outdoor environment (2) of a building (3) as supply air into a room (4) of the building (3) and exhaust air from the room ( 4) is conveyed as exhaust air into the environment (2) of the building (3), characterized in that in another operating mode the ventilation device (1) continues to convey outside air as supply air into the room (4), but also to form a die Exhaust air from the room (4) is opened and exhaust air from the room (4) flows through the window (5) into the surroundings (2) of the building (3). Procedure for operating a ventilation device claim 1 , characterized in that a change from one operating mode to the other is switched as a function of an ambient temperature prevailing in the surroundings (2) of the building (3). Procedure for operating a ventilation device claim 1 or 2 , characterized in that the ventilation device (1) generates a request to open the window (5) from a predefined ambient temperature. Method for operating a ventilation device according to one of Claims 1 until 3 , characterized in that an opening state of the window (5) is detected by the ventilation device (1) and the other operating mode is only switched on when the window (5) is open. Method for operating a ventilation device according to one of Claims 1 until 4 , characterized in that in the other mode of operation a conveying device (1.1) for conveying the exhaust air from the room (4) to the environment (2) of the building (3) is switched off. Method for operating a ventilation device according to one of Claims 1 until 5 , characterized in that in the other operating mode the exhaust air from the room (4) is discharged to 0% via the ventilation device (1) and 100% via the window (5) to the surroundings (2) of the building (3). Method for operating a ventilation device according to one of Claims 1 until 6 , characterized in that in one mode of operation of the ventilation device (1) just as much supply air into the room (4) as exhaust air from the room (4) is conveyed. Method for operating a ventilation device according to one of Claims 1 until 7 , characterized in that one mode of operation is operated according to the source air principle and the other mode of operation according to the mixed air principle. Method for operating a ventilation device according to one of Claims 1 until 8th , characterized in that the ventilation device (1) is positioned in the room (4) at a minimum distance of 3 meters from the window (5).

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