NL1025450C2 - Ventilation installation, is positioned in gable for natural ventilation of room and has housing with ventilation channel extending through housing and electrically driven closure component placed in closed position - Google Patents

Abstract

The ventilation installation (1) is positioned in a gable for natural ventilation of a room and has a housing (2), through which a ventilation channel (3) extends. Also within the housing is an electrically driven closure component. The ventilation channel brings the internal room into communication with the external air so that this air, as the result of a pressure difference, can flow into the inner room. In the installation is a fan, which gives rise to and impels an air current. A closure component is fitted in the ventilation channel and is driven by an electric motor (4). It can be placed in an open position or a closed position. It can be formed as a tippable valve. A local energy source (6) in the form of a chargeable battery is provided for the electric motor.

Description

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Short indication: Ventilation device.

The invention relates to a ventilation device to be placed in a facade for naturally ventilating a space, comprising a housing with a ventilation channel extending through the housing, and an electrically driven closing member that can be placed in a closed position, in which the closing member closes the ventilation channel and an open position, in which the ventilation channel is open.

Such a ventilation device is known from Dutch patent specification NL 950025.

The known ventilation device is placed in the facade of a building in order to provide the interior of a building with fresh outside air. By "natural ventilation" it is herein meant that the air flow from outside to the inside space is completely obtained by the air pressure difference between the inside space and outside and that therefore no use is made of active ventilation devices, such as fans.

To prevent unnecessary ventilation and hence energy losses, it is advantageous to be able to adjust the flow rate of the ventilation channel; for example a constant air flow during ventilation and closing the ventilation duct when no ventilation needs to take place, such as during the day in a bedroom. This includes. the known ventilation device is a closing member electrically in this case with a servomotor.

A drawback of the known ventilation device is the relatively high energy requirement, since during the ventilation of the closing member it must always be set again to maintain a continuous flow. In order to meet this need, the known ventilation device is connected to the mains and thus an electricity cable is required which continuously connects the ventilation device to the mains. This is particularly disadvantageous when a building is subsequently provided with a ventilation device since then the electricity cables are more difficult to conceal in the wall or the like. However, also with new buildings 1025450

I I

Η I

I 2 I

I leads to the installation of the required electricity cables to an I

I extra effort and additional costs. I

The object of the invention is to provide an I

Ventilation device, the flow rate of which is adjustable, and of which I

I 5 the energy requirement is limited. I

The object has been achieved with the ventilation device according to I

The preamble of claim 1, characterized in that the ventilation I

device comprises a local energy source for driving the I

I closing member, and because a self-regulating I. In the ventilation duct

A mechanical flow control valve is provided which controls the flow of the I

I controls the ventilation duct in the open position of the closing member. I

I With a self-regulating mechanical flow control valve, an I

I element meant that without electric drive automatically, on I

I basis of the air flow through a ventilation channel, the flow rate of I

I 15 can control the ventilation channel. Such a flow control valve is I

I for example known from NL 9102132. By using an I

I self-regulating flow control valve is the energy requirement of the I

I ventilation device very limited. The closing member does after all have to be I

I only need to be electrically operated when an I is transferred

I 20 period of no ventilation to a period of ventilation. I

This makes it possible to drive the closing member

I suffice with a local energy source and need the ventilation I

I device no longer needs to be connected to the mains. If I

The result is the cables required in the prior art

I superfluous. I

Advantageously, the local energy source is formed by one or I

I more electric batteries. These batteries can come from the non-I

I are rechargeable type and are exchanged if they are empty. I

Since the closing member only has to be operated a few times a day I

I 30, the battery can be used for a long time in the I

I ventilation device. I

I It is also possible that the local energy source can be recharged. In I

For example, instead of exchanging the batteries, the I

I local energy source can be recharged. I

The ventilation device preferably comprises a solar panel I

I for charging the local energy source. With a solar panel I

I means a device with one or more solar cells with which I

I 1025450 3% can be generated by incident light energy. With such a solar panel it is possible that the local energy source can be used without human action, since the local energy source is regularly charged by the solar cells.

In a possible embodiment, the solar panel is placed on a separate solar element which is connected to the housing via a charging cable and can be arranged at a suitable location. The solar element can be placed anywhere on the facade of the building, for example in a corner of a window or on the wall. It will be clear that a location for the solar panel is suitable if this location receives light.

Alternatively, the solar panel can be mounted on the housing of the ventilation device. With such an embodiment there is less flexibility with regard to the placement of the solar panel. The advantage, however, is that a separate element does not have to be placed when placing the ventilation device.

The solar panel is advantageously adapted to charge the local energy sources of two or more ventilation devices according to the invention. With such an embodiment of the solar panel, a separate solar panel need not be provided for each of the ventilation devices.

In another embodiment, it is advantageous to charge the local energy source with a charging device to be temporarily connected to the local energy source during charging. Such a charging device can for instance comprise an electricity cable which can be connected at one end to the ventilation device and at the other end to a socket. It is also possible to provide a strong battery as a charging device which, by temporarily connecting to the local energy source, recharges it, differences in nature over the facade and the like.

Further advantages and features of the invention will be described below with reference to the drawing. Herein: Fig. 1 shows a ventilation device according to the invention; and Fig. 2 shows the ventilation device of Fig. 1 in cross section.

1025450 I 4 I Figure 1 shows a ventilation device according to the invention I, which is designated in its entirety by reference numeral 1.

The ventilation device comprises a housing 2 in which a ventilation channel 3 extends. When the ventilation device is built into a facade in I 5, the ventilation channel brings an interior space I into communication with the outside air, so that the outside air can flow to the interior space as a result of a pressure difference over the facade (flow direction indicated in Fig. 2 by a arrow). There are in the

ventilation device no dynamic mechanical means, such as I

A fan, provided for generating or promoting the I

I air flow. Such a method of ventilation is here · I

I referred to as natural ventilation. I

Figure 2 shows a cross-section of the ventilation device I

I shown. A closing member 5 is arranged in the ventilation duct. I

It is alternatively also possible to close the closing member elsewhere in the I

I place ventilation device 1, for example at the start or I

I the end of the ventilation duct 3. I

The closing member 5 can be placed in an open position in which I

I the passage through the ventilation duct is essentially not I

Hindered and a closed position (indicated by the dotted line in I

Figure 2), in which the closing member closes the ventilation duct. I

Such a closing device serves to prevent ventilation if I

I this is not desired. I

The closing member 5 is driven by an electric I

Actuator, such as the motor 4 shown. The I shown in the figure

The closing member 5 is designed as a tiltable valve. It is also I

I possible to implement such a closing member in a different way

I, for example as a rotary grille or a sliding grille. I

The ventilation device 1 further comprises a local energy source I

I 30 6 for driving the closing member 5. The local energy source I

I 6 is a rechargeable battery. However, it is also possible to use I

I provide another type of local energy source 6, for example one or I

I more batteries that are not rechargeable, but that if necessary I

I can be exchanged for new batteries. The local I

The energy source 6 is advantageously integrated in the housing 2 of the I

I ventilation device 1. I

I 10254 ^ 0 4 5

Furthermore, the ventilation channel 3 is provided with a self-regulating flow control valve 7 which controls the flow of the ventilation channel 3 in the open position of the closing member 5. The self-regulating flow control valve 7 is designed as an elongated valve body mounted in the ventilation duct 3, which valve body has a substantially L-shaped cross-section with a short leg and a long leg.

The length of the valve body substantially corresponds to the length of the cross-section of the ventilation duct 3. The valve body is pivotally mounted about an axis of rotation that runs in the longitudinal direction of the valve body, such that the long leg extends substantially in the direction of the airflow extends and the short leg is substantially transverse to the airflow. The free edge area of the short leg is advantageously bent in a direction away from the long leg and the free edge area of the short leg is bent in a direction towards the short leg.

It is noted that it is possible to design the self-regulating flow control valve in a different manner, for example as a strip or rosette extending in the longitudinal direction.

Such a self-regulating flow control valve 7 has the advantage that the flow can be kept constant over a large air pressure range, while in particular even with large air pressure differences across the facade the air flow through the ventilation device 1 can be kept limited, while there is no energy, and therefore no energy source is required to apply this regulation.

As a result, the motor 4 only needs to be used to drive the closing member 5, so that relatively little energy is required, since such a closing member is usually operated only a few times a day.

The ventilation device advantageously comprises a solar panel 8 provided with solar cells 30 for charging the local energy source. By providing such a solar panel 8, the battery can be charged without requiring the intervention of a person. The solar panel 8 is placed on a separate solar element which is connected via a charging cable 9 to the rechargeable battery 6 in the housing 2 of the ventilation device. The advantage of a separate solar element is that it is on an i102 54 50

I 6 I

I can be arranged in a suitable location, for example on an I

I bright spot on the facade. I

Alternatively, the solar panel 8 can be mounted on the I

I house 2 of the ventilation device 1. There is then no separate I

I 5 charging cable 9 required since the solar panel is directly connected I

I with the house 2, but there is less freedom with regard to I

I of installing the solar panel 8. The choice of one in the I

I house 2 integrated solar panel 8 or a solar panel 8 placed on I

I a separate solar element as shown in the figure, in particular I

Depend on the location where the ventilation device 1 is installed

I placed I

I Instead of providing a solar panel 8 for the I

Charging the local energy source 6 of the ventilation device 1, I

In another embodiment, the local energy source 6 can also be I

I 15 charged by a temporary while charging with the local I

I energy source connecting device. I

Such a charging device can be an electricity cable

I include those with an end with the ventilating device

I is connected and at the other end to a socket of the I

I 20 mains. For this purpose, the housing 2 on the side of the interior space I can

I have a type of socket with which the charging cable I

I can be connected. Optionally, the charging device may be an I

I transformer to transfer the energy from the mains to I

I use energy suitable for the rechargeable local energy source, I

For example from 220 V to 12 V. I

I As an alternative it is also possible to have the local

I can temporarily connect energy source 6 with a larger battery that the I

I can charge local energy source 6. I

I Another alternative is to make the local I removable

I energy source 6, so that it can be used at a different location I

I charged. Such an embodiment can, for example, simply be I

I are realized with standard, generally available, rechargeable I

I batteries, for example one or more rechargeable penlites, which after I

I have been taken out of the ventilation device in a standard I

I 35 battery charger can be charged. I

The closing member 5 can preferably be operated with an I

I wireless remote control. So that the ventilation channel 3 I

, 1025450 I

Λ 7 can be opened or closed. For this purpose, the ventilation device 1 is provided with an eye 9 with which, for example, the infrared signals from the remote control can be received.

It is also possible to have the closing member 5 automatically operated on the basis of a time program to be set.

Furthermore, it is still possible to operate the closing member automatically on the basis of factors other than time such as, for example, air humidity, air pressure difference across the facade, temperature difference across the facade, air quality (CO2 and / or Radon content) and the like.

For controlling the ventilation device on the basis of time or other factors, it can be provided with a processor.

The invention provides an independently functioning ventilation device 1 which, without the ventilation device 1 having to be connected to the mains with a permanent electricity cable, continuously achieves optimum ventilation of an interior space with minimal energy consumption. If use is made of a solar panel 8 for charging the local energy source 6, no further human intervention is required for the proper functioning of the ventilation device for a very long time. Hereby the ventilation device according to the invention provides a clear advantage over the ventilation devices known until now.

25 1025450

Claims (15)

1. Ventilation device to be placed in a facade for naturally ventilating a space, comprising a housing with a ventilation channel extending through the housing, and an electrically driven closing member that can be placed in a closed position, wherein the closing member closes the ventilation channel and an open position, in which the ventilation channel is open, characterized in that the ventilation device comprises a local energy source for driving the closing member, and that in the ventilation channel a self-regulating flow control valve is arranged which controls the flow rate of the ventilation duct in the open position of the closing element. I Ventilation device according to claim 1, wherein the local energy source is at least one electric battery. I Ventilation device according to claim 1 or 2, wherein the local energy source is rechargeable. I 20 I Ventilation device as claimed in one or more of the claims 1-3, wherein the ventilation device comprises a solar panel for charging the local energy source. I Ventilation device as claimed in claim 4, wherein the I solar panel is placed on a separate solar element which is connected via I a charging cable to the housing and can be arranged at a suitable location. I Ventilation device according to claim 4, wherein the solar panel is mounted on the housing of the ventilation device. I 7. Ventilation device as claimed in one or more of the claims 4-6, wherein the solar panel is adapted to charge the local energy sources of a plurality of ventilation devices. I 1O254H0 I «« Ventilation device according to one or more of claims 1-3, wherein the local energy source is rechargeable with a charging device to be temporarily connected to the local energy source during charging. 5 8 I CONCLUSIONS I Ventilation device as claimed in claim 8, wherein the charging device comprises an electricity cable which can be connected at one end to the ventilation device and at the other end to a socket of the mains. 10 10. Ventilation device according to one or more of claims 1-9, wherein the local energy source is placed in the housing of the ventilation device. Ventilation device according to one or more of the claims Ι-ΙΟ, wherein the local energy source is designed to be removable from the ventilation device. 12. Ventilation device as claimed in one or more of the claims 1-20 11, wherein the closing member can be operated with a wireless remote control. 13. Ventilation device as claimed in one or more of the claims 1-12, wherein the closing member is automatically operated on the basis of a time program to be set. 14. Ventilation device as claimed in one or more of the claims 1-13, wherein the closing member is automatically operated on the basis of factors such as air humidity, air pressure difference across the facade, temperature difference across the facade, air quality (CO2 and / or Radon content) and of such. 15. Ventilation device for naturally ventilating at least one room, comprising 35. at least two ventilation devices according to one or more of claims 1-14, and 1025450 - at least one solar panel for charging the local energy sources of two or more of the ventilation devices. I 1025450 I