NL1030827C2 - Ventilation device for e.g. residence, has control device connected to flow via adjustment and requesting units e.g. sensors, that are connected to control device for making request to control device for air in one of zones - Google Patents

Abstract

The device has a control device operationally connected to the flow via adjustment unit and a requesting unit e.g. time switch or sensors. The sensors are operationally connected to the control device for making a request to the control device for air in one of the zones. The requesting unit makes a request to the control device for additional air in the zone. The control device in response to the request activates one or more of the flow through adjustment units to adjust the ventilation flows in the zones in order to meet the request. Independent claims are also included for the following: (1) a method for ventilating a building, particularly a residence, by a ventilation device for balanced ventilation (2) a control, suitable and intended for a ventilation device.

Description

Ventilation device

BACKGROUND OF THE INVENTION

The invention relates to a ventilation device for the balanced ventilation of at least two zones in a building, in particular a home.

Such ventilation devices are known.

In addition, such a ventilation device actively introduces nearly as much outside air into a building as inside air Van into the building outside the building. To that end, such a ventilation device will generally be provided with an inlet which opens outside the building, for sucking in outside air into the building, and an outlet for ejecting substantially the same amount of inside air from the building to the outside of the building, and a fan or the like to move air.

A problem with existing ventilation devices is that the demand for fresh air varies over time, and moreover depends on the number of people present in a building and on the degree of internal pollution sources (e.g. Radon). In addition, the need also differs per area or area in the building.

A solution to that problem is to make a fan that is often arranged in such devices to move the air work faster. A drawback thereof is that thereby the energy consumption and the energy consumption

1030822S

2 noise production rise. And this while increasing the insulation of buildings to save energy, the importance. Good ventilation increases and the sound of the installation is more likely to be a nuisance due to the sound density of the insulation shell of the building.

SUMMARY OF THE INVENTION

The invention has for its object to at least partially eliminate the disadvantages mentioned.

To this end, the invention provides a ventilation device for balanced ventilation of a building, such as a dwelling, divided into at least two zones with at least one outlet or inlet in each zone, at least one of which is provided with flow adjusting means, for instance a valve, wherein the ventilation device further comprises a control device which is operationally connected to the flow adjusting means, and demand means, for example a time switch or sensors, operatively connected to the control device for issuing a demand for air in one of the zones to the control device, wherein the demand means outputs a demand for additional air in a zone to the control device, and the control device activates one or more of the flow adjusting means in response to the demand to adjust the ventilation flows in the zones to meet the demand.

The invention further provides a method for ventilating a building, in particular a dwelling, by means of a ventilation device for balanced ventilation, wherein the building is divided into at least two zones with at least one outlet in each zone or inlet of which at least one provided with flow-adjusting means, for example a valve, and the ventilation device is furthermore provided with a control device operatively connected to the flow-adjusting means, and demanding means, for example a time switch or sensors, operatively connected to the control device for issuing a demand for air in one of the zones to the control device, wherein the demand means issues a demand for additional air in a zone to the control device, and the control device in response to the question one or more of activates the flow adjusting means to adjust the ventilation flows in the zones to accommodate n to the question.

It has been found that a certain basic ventilation flow rate in a building is usually sufficient to absorb a fluctuation in the need for fresh air. On average, a certain amount of ventilation appears to be required in a building. By now dividing a building into zones, and indicating per zone whether additional fresh air is required at a certain moment or during a certain period of time, and moreover providing each zone with a means to control the flow rate. and / or change exhaust air, that is, limit or increase, the additional demand for fresh air in one or more zones in the building can be met at least in part.

Namely, by limiting the ventilation in other zones by these means, the capacity released, that is to say the flow that is not used in those zones, is supplied to those zones where a larger flow, i.e. a larger amount of fresh air, is needed. This has shown that in many cases an adjustment in the total flow of fresh air is not necessary.

In many cases, the means for adjusting the flow 30 are valves in or at the inlets or outlets in the zones. In addition, it is preferable if such an agent is present in each zone. If an outlet is present in each zone, a valve may be provided in each outlet. Also or alternatively, an inlet 35 may be present in each zone, and each inlet may be provided with a valve.

In one embodiment the ventilation device is provided with a heat exchanger for exchanging heat energy between the incoming outside air and the outgoing inside air. Such a ventilation device is able to realize a very low energy consumption.

In an embodiment of the. ventilation device according to the invention, the query means comprise an adjustable time switch. A user can set a time therein when additional fresh air is needed, and a zone where that additional fresh air is needed. Optionally, it is also possible to set how much additional fresh air is needed. The time switch will output a demand signal to a control device which calculates on the basis of the local need and the basic flow how many and which means to adjust the flow must be adjusted. If it is not possible to provide the desired ventilation in this way, the total flow can be adjusted additionally.

In another embodiment, the query means comprise sensors for measuring the air quality in a zone. Such sensors may for example be CO2 sensors, air humidity sensors, Nox sensors, or the like. Another type of sensors are presence sensors, which for example emit a signal when a person is present in a room or zone. An advantage of such sensors is that the supply of fresh air can be adjusted even better to the actual requirement, whereby further lower energy consumption can be realized. Optionally, such sensors can be combined, and / or combined with a time switch as described above.

In fact, the ventilation device ensures that the ventilation flows in the various zones in a building in some zones become smaller than a certain average, and in other zones become larger than that average, while the total flow rate remains substantially the same. This makes it possible to compensate for usual and anticipated fluctuations in the need for fresh air.

1030827-5

Further embodiments of the ventilation device according to the invention are described in the subclaims, which are incorporated herein by reference.

It will be clear that some aspects described above and in the claims can be combined.

In particular, the invention further relates to a controller, apparently intended and suitable for a ventilation device as described above, or apparently intended and suitable for a method as described above.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is further elucidated on the basis of an exemplary embodiment of a ventilation device according to the invention. This is shown in:

Figure 0 a home; figures OA-OB the various floors of the home of figure 0; figure OD shows a schematic example of the flow rate distribution of a general ventilation device in the home of figure 0

Figures 1-6 show various schematic embodiments of a ventilation device according to the invention.

DETAILED DESCRIPTION OF THE DRAWINGS

Figure 0 shows a side view of a residential house 1 with floors 2, 3 and 4.

Figures 0A, 0B and 0C show these respective floors 2, 3 and 4 in top view. A fan device 5 with heat exchanger is arranged here on the attic floor 4 (Fig. 0C) (here in one housing). An outside inlet 6 and outside outlet 7 for respectively inlets of outside air into the house and the outlets of inside air from the house reach out through the roof.

In the ventilation device shown here, two zones can be distinguished; that is, zone 1 5 indicated by reference number 2 of the ground floor and zone 2, indicated by reference number 3, the floor with bedrooms. Supply and extract air channels run from fan device 5, indicated by number 8 in Figure Oc.

Figure 0A shows a top view of the ground floor 2 of the dwelling, with inside outlets 40 providing fresh outside air and inside inlets 41 in the kitchen and the toilet ensuring extraction of the inside air. With both 100 and 101, the top connection has a diameter of 125 mm. The flow rate at 41 in the toilet is 25 mA3 / hour, at 40 in the kitchen 57 mA3 / hour, at 41 in the kitchen 57 mA3 / hour, at 40 in the living room 66.8 mA3 / hour.

Figure 0B shows a top view of the first floor 3 with bedrooms and a bathroom 42. In this zone, inner outlets 43 are provided in each bedroom, and an inner inlet 44 for extracting indoor air into the bathroom. The air ducts are also indicated here with number 8. At 102 the top connection has a diameter of 150 mm and the bottom connection has a diameter of 125. At 103 the diameter is 150 mm after branch, bathroom, extending to 125 mm. The flow rate at 43 (middle in figure) is approximately 47.2 mA3 / hour, at 43 (lower in figure) 33.8 mA3 / hour, and at 43 (right in figure) 25 mA3 / hour while the space is 7.65 mA2. At 44 the 30 flow rate is 50 mA3 / hour.

Figure 0D shows systematic distribution of the air flows, with an example suction (H) of 100 cubic meters of air per hour and a suction (G) of also 100 cubic meters of air per hour. The two floors 2 and 3 are indicated. In this situation, for example, 55 cubic meters per hour (A) is dispensed into the bedrooms and 30 cubic meters per hour (C) is sucked into the bathroom. In addition, 45 cubic meters per hour (E) in the ground floor 2 is dispensed and 15 cubic meters per hour () are extracted in the toilet and 55 cubic meters per hour (F) in the kitchen. At (B), 25 cubic meters now flow per hour. Those set standard flows will result in the specified flow rates through the home and from zone to zone. By, for instance, arranging valves in the various inner inlets and / or inner outlets according to the invention, and a control device and demand means, it has been found possible to influence the different flows in a manner to be determined in advance. As a result, in many cases without, for example, adjusting the speed of the fan, it is nevertheless possible to realize good ventilation in the event of a changing demand for fresh air.

Figure 1 shows a building 1 provided with a ventilation device according to the invention with an outside inlet 6 and an outside inlet 7, connected to an air displacement device (usually a fan) and heat exchanger 8, indicated here in one housing.

The outside inlet 6 is further in communication with inside outlet 9 and the outside outlet 7 is in connection with inside inlet 10. The inside inlet or inside air channel 9 branches into two inside outlets 11 and 12, each of which opens into a different zone or space in the building. Inner outlet 11 is provided with valve 13 and inner outlet 12 of valve 14. The ventilation device is further provided with an inner inlet 20 and inner inlet 21 which respectively open into space (zone) 22 and space 30 (zone) 23.

Furthermore, space or zone 16 is provided with a CO2 sensor 18 here and space or zone 15 is provided with a CO2 sensor 19. The ventilation device is further provided with a request means 23 which receives a signal from the CO2 sensors 18 and 19. Moreover, the query means is provided with a programmable timer in which for each room one or more time blocks can be given to 1030827] in which more or less fresh air is required in the rooms 16 and 15. This request means outputs a signal to the control unit 24 which control unit operates the valves, with a dashed line indicated as an operational connection to the valves, and which is able to adjust the ventilation speed if desired.

Figure 1 refers to spaces / zones 15, 16, 23 and 22. These can be actual spaces, such as 10 rooms, but also zones, such as entire floors. These spaces or floors are not sealed off from each other in a fluid-tight manner. As a result, currents run from one room / zone to another. In a stationary situation, for example, a flow will arise as shown in figure 0D. By changing a flow rate by closing the valve 13, 14 more or less, the flow pattern / ventilation pattern can be adjusted. The setting will be made experimentally in cases, depending on the building and the fluctuations in demand for ventilation / fresh air.

The interconnections of the valves, the demand means 23, the control device 24 and the fan in unit 8 are indicated by dotted lines. These lines can be physical lines, but also wireless connections, via infrared, radio connection, bluetooth, and the like.

Figure 2 shows the ventilation device of Figure 1, but in this situation, not the valves are arranged in the inner inlet, but in the inner outlets 20 and 21, respectively, valves 30 and 31 are arranged therein. In addition, it contains the CO2 sensors. these spaces, indicated by numbers 32 and 33 respectively. However, it is not absolutely necessary that the sensors are arranged in the same spaces as the inlets or outlets with valves.

In the case the demand means will be able to get a demand for more air from the two spaces 22 and 23. In response to a demand for more fresh air, in this case the valves 30 and 31 will be operated such that the amount of flow increases or decreases in these two spaces.

In figure 3 the situation of figures 1 and 2 is combined, wherein valves are arranged in both the inner inlets and the inner outlets, and all rooms are provided with CO2 sensors. This makes it possible to control the ventilation through the different zones in ever finer detail.

In figure 4 the ventilation device according to figure 1 is, in which this time the demand device or the demand means 23 is only controlled by means of a switch clock, with which time blocks can be indicated when additional air is provided in certain rooms or zones. is necessary.

Fig. 5 again shows the arrangement of Fig. 1, this time with the valves arranged in the inlets as in Fig. 2, but again no CO2 sensors have been fitted, but control again takes place by means of a time switch as in Fig. 4.

Figure 6 is also the arrangement of Figure 1, in which this time valves are fitted in all inlets and outlets. Here too, demand control is again effected by means of a programmable time switch, again in the basis as in Figure 4.

A number of possible examples of control methods are set out below.

30

There can be a number of choices for control: "Simple" control: * Ventilation based on time (clock); 35 * Ventilation with constant flow based on the CO2 content; "Extended" control: 103082¾ 10 * Ventilation with constant flow and constant pressure based on the CO2 content.

5 Ventilation based on time (clock)

By programming a clock, it is possible to send the fresh outside air to the desired spaces by controlling valves. In a simplest embodiment, the valves only have the positions open or closed. A further development are valves that can provide an adjustable flow. The degree of ventilation is determined by the position of a position switch that the end user sets. A valve in the closed state has a ventilation air passage of, for example, approximately 20% Of the set flow, a valve in the open state has a 100% ventilation air passage.

In this way the fresh outside air can be led to the bedrooms at set times in the evening and the fresh outside air is led to the living room during the day. Ventilation therefore takes place at the place where people are present.

Constant flow ventilation based on the CO 2 content By measuring the CO 2 content in the different rooms, it is determined in which room the most fresh outside air must be supplied and whether it is necessary to increase the ventilation level. The fresh outside air can be sent to the relevant room by means of opening or closing valves. In a simple embodiment, the valves only have the positions open or closed. A further refinement can be found in adjustable valves that are (virtually) continuously adjustable. A valve in the closed state has a ventilation air passage of, for example, approximately 20% of the set flow, a valve in the open state has a 100% ventilation air passage.

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The degree of ventilation depends on the CO2 content in the various rooms. In this automatic ventilation control, you can choose whether or not to include the ventilation position 3 in the process. This option has been made in connection with a possibly too high noise level.

You can choose from 3 control strategies.

* Comfort program where switch point 1 is 800 ppm and switch point 2 is 1000 ppm; * ECO program where switch point 1 is at 1000 ppm and switch point 2 at 1200 ppm (factory setting); * Own program in which both switch point 1 and 2 can be selected; 15

The two control strategies are shown in the tables below.

CO 2 content below switch point 1 20 '+' CO 2 content above switch point 1 '++' CO 2 content above switch point 2

Ventilation position 3 not included in process 25 CO2 sensor 1 CO2 sensor 2 Valve 1 Valve 2 Ventilation position open open 1 + - open close 1 + close open 1 + + open open 2 30 ++ - open close 2 ++ close open 2 + + + open open 2 + ++ open open 2 ++ ++ open open 2 35

Ventilation position 3 included in process 1030827-12 CO2 sensor 1 CO2 sensor 2 Valve 1 Valve 2 Ventilation position open open 1 + - open close 1 + close open 1 5 + + open open 2 ++ - open close 2 ++ close open 2 ++ + open open 3 + ++ open open 3 10 ++ ++ open open 3

With a continuously variable fan, the speed can be a function of measured values from the sensors, possibly in combination with time. The speed of rotation can thus be kept low in a certain area, so that adequate ventilation is provided.

Ventilate with constant flow and constant pressure based on the CO2 content 20

The working of this control principle is broadly the same as the situation above. The regulation has been expanded with regulation on pressure and "continuously variable" regulation of the valves.

25

If a too high CO2 content is found in one of the rooms, it will have to be ensured that more fresh outside air is allocated to this room. The amount of fresh outside air again depends on the level of the CO2 content. For example, the valves connected to the other rooms, where there is a low CO2 content, will now close step by step. This means that more fresh outside air goes into the room with the too high CO2 content.

35 Now it could happen that by closing the valves and increasing the fan speed, the resistance in the system becomes too high and the fans run at a high speed. Noise pollution will then become a problem 1030827-13. The control is therefore also equipped with a constant pressure control that will ensure that the resistance in the system will not exceed a certain value. The control will then play with the valve positions (how far open or closed) and the air displacement, ie the total flow.

It will be understood that the above description is included to illustrate the operation of preferred embodiments of the invention, and not to limit the scope of the invention. Starting from the above explanation, many variations will be evident to those skilled in the art that fall within the spirit and scope of the present invention.

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Claims (15)

1. Ventilation device for balanced ventilation of a building, such as a dwelling, divided into at least two zones with at least one outlet or inlet in each zone, at least one of which is provided with flow adjusting means, for example a valve, the ventilation device further comprises a control device operatively connected to the flow adjusting means, and demand means, for example a time switch or sensors, operatively connected to the control device for issuing a demand for air in one of the zones to the control device wherein the demand means issues a demand for additional air in a zone to the controller, and the controller, in response to the query, activates one or more of the flow adjuster means to adjust the ventilation flows in the zones to accommodate the question. Ventilation device as claimed in claim 1, wherein in each zone at least one inlet or outlet is provided with flow adjusting means. Ventilation device as claimed in claim 1 or 2, wherein an inlet and an outlet are arranged in each zone. 4. Ventilation device as claimed in any of the foregoing claims, wherein each inlet is provided with flow-adjusting means. 5. Ventilation device as claimed in any of the foregoing claims, wherein each outlet is provided with flow adjusting means. 6. Ventilation device as claimed in any of the foregoing claims, wherein a zone comprises several rooms. Ventilation device according to any of the preceding claims, wherein each zone comprises a room. Ventilation device as claimed in any of the foregoing claims, wherein each zone is in air flow connection with each other. Ventilation device as claimed in any of the foregoing claims, wherein the properties of the air-flow connection between the zones are entered in the control device. 10. Ventilation device as claimed in any of the foregoing claims, wherein control device comprises setting parameters in which the properties of the air flow connection between the zones in the control device are adjustable. 11. Ventilation device for balanced ventilation of at least two zones in a building, in particular a dwelling, comprising: an outside air inlet for outside air from outside the building, in mounted condition; - an outside outlet which flows outside the building, in the mounted state; 20. at least one indoor outlet for discharging outside air attracted into the building through the outside inlet; - at least one inner inlet for the intake of inner air from inside the building, and which is connected to the outer outlet for ejecting said inner air outside said building through said outer outlet; air displacement means for sucking in outside air through the outside air inlet and ejecting said outside air into the building through the inside outlet and sucking inside air through the inside inlet and ejecting said inside air outside the building through the outside outlet, the air displacing means equipped for realizing an indoor air flow rate and an outside air flow rate that are virtually the same; 35. flow adjustment means for the. adjusting the flow through an inner inlet or inner outlet; 1030321s - control means operatively connected to the flow adjusting means, and - query means operatively connected to the control means for issuing a request for additional outside air in at least one of the zones, the control means by adjusting the through-flow adjustment means adjust the ventilation in the different zones to meet the demand as much as possible. 12. Method for ventilating a building, in particular a dwelling, by means of a ventilation device for balanced ventilation, wherein the building is divided into at least two zones with in each zone at least one outlet or inlet of which at least one provided with flow adjusting means, for instance a valve, and the ventilation device is further provided with a control device which is operationally connected to the flow adjusting means, and demand means, for instance a timer or sensors, operatively connected to the control device for issuing a demand for air in one of the zones on the control device, wherein the demand means issues a demand for additional air in a zone to the control device, and the control device activates one or more of the flow adjusting means in response to the demand to control the ventilation flows in the zones to meet demand. Controller, apparently intended and suitable for a ventilation device according to one of the preceding claims or apparently intended and suitable for a method according to one of the preceding claims. Device comprising one or more of the characterizing measures described in the description and / or shown in the drawings. 15. Method comprising one or more of the characterizing measures described in the description and / or shown in the drawings. -o-o-o-o-o-o-o-pvE 1030827.¾