WO2016016352A1

WO2016016352A1 - Ventilation system and method for controlling a ventilation system

Info

Publication number: WO2016016352A1
Application number: PCT/EP2015/067458
Authority: WO
Inventors: Egon Feisthammel; Andreas Gromer; Guido Kleinbub
Original assignee: BSH Hausgeräte GmbH
Priority date: 2014-08-01
Filing date: 2015-07-30
Publication date: 2016-02-04
Also published as: DE112015003560A5; AT519318A5; AT519318B1

Abstract

The invention relates to a ventilation system for kitchens which has a ventilation module (2) which represents a fume hood fan (22), and at least one additional ventilation module (2). The ventilation system is characterized in that each ventilation module (2) has a control module (1) which has at least one external bus interface (X1, X2) at least for producing a bus communication connection having at least one control module (1) of at least one other ventilation module (2) of the ventilation system (3). The invention further relates to a method for controlling such a ventilation system (3).

Description

Ventilation system and method for controlling a ventilation system

The present invention relates to a ventilation system for the kitchen area and a method for controlling such a ventilation system.

For ventilation in the kitchen area, it is known to use several elements. In such a ventilation an extractor hood is usually provided which has a fan. In this case, the control of the elements, that is, for example, the blower, usually via a central control in the hood takes place. In particular, a control device is usually provided in the hood over which both the functions of the fan and other functions, such as the lighting function on the hood, are controlled. A disadvantage of this type of ventilation is that, in particular in the arrangement of one of the elements in a spatial distance from the fan of the ventilation system, a sometimes complex wiring is necessary. In particular, for example, when arranging a fan at a distance from the actual extractor fan with control panel, that is, when using an external fan, the control must continue to be done by the control panel of the hood. For this purpose, a wiring between these elements of the ventilation is usually necessary. In addition, usually the power supply of the fan must also be done via wiring from the hood. It is therefore an object of the present invention to provide a solution with which a ventilation system can be provided, in which a simple structure of the individual elements of the ventilation system and easy connection of the elements can be delivered while reliable control of the overall system. The invention is based on the finding that this object can be achieved by the ventilation system having a modular structure in which the individual modules perform partial functions and the entire function of the ventilation system is realized by suitable connection. According to a first aspect, the object is therefore achieved by a ventilation system for the kitchen area, which has a ventilation module, which is a fume hood blower, and at least one further ventilation module. The ventilation system is characterized in that each ventilation module has a control module which has at least one external bus interface at least for generating a bus communication connection with at least one control module of at least one other ventilation module of the ventilation system. The ventilation system, which can also be referred to as a modular ventilation system or device network, is a ventilation system for the kitchen area. As a ventilation system for the kitchen area, a system is referred to, the modules are designed to act on conditions that occur during cooking, and in particular required environmental conditions in a kitchen, in particular with at least one cooking position set. In particular, the ventilation system is a system whose modules are used to influence the flow of air in the kitchen area and in particular in the area of a hotplate. The ventilation system for the kitchen area therefore differs from a ventilation system for living rooms or other rooms.

According to the invention, the ventilation system on a ventilation module, which is a fume hood blower. This extractor blower serves to suck vapor and vapor from a cooking place. The extractor fan for this purpose preferably comprises a fan. The ventilation system according to the invention has at least one further ventilation module. Since the additional ventilation module is provided in addition to the extractor fan in the ventilation system, this is also referred to as an additional module. The add-on module can be an active or passive ventilation module. In particular, the add-on module can actively act on the conveyance of air in the kitchen area. Examples of such active ventilation modules are therefore for example an external fan, a supply fan, a wall box and the like. Furthermore, however, passive ventilation modules, such as an extractor hood without fan with filter element (s) and the like, can be used as additional modules in the ventilation system according to the invention. The The invention is not limited to a particular combination of ventilation modules or to a specific number of ventilation modules.

The ventilation system is characterized in that each ventilation module has a control module. In this case, a control module is understood to mean a unit which has at least one control unit and optionally additionally one or more additional boards. The control module according to the invention can therefore also be referred to as a control unit. The control module is used according to the invention at least to control the function of the ventilation module on which the control module is provided. In addition, however, the control module also serves to communicate with at least one further control module of the ventilation system, in particular with at least one control module of another ventilation module of the ventilation system.

The control module according to the invention has at least one external bus interface for generating a bus communication connection with at least one control module of at least one other ventilation module of the ventilation system. In this case, an external bus interface is a bus interface which permits communication with subscribers outside the ventilation module. In particular, a bus interface is referred to as external bus interface, which is accessible from the outside, that is also for the user of the ventilation system at least when opening a housing of the ventilation module. An external bus interface therefore differs from an internal bus interface, which may represent a D-Bus interface, for example. These internal bus interfaces are provided on the control module such that they are generally not accessible after installation of the control module in the ventilation module, even after opening an optionally provided housing of the ventilation module, in particular not for the user of the ventilation system.

According to the invention, the external bus interface serves at least for generating a bus communication connection with at least one control module of at least one other ventilation module of the ventilation system. The generation of a bus communication connection is understood according to the invention as signing on to a bus system. According to the invention, the bus system is formed by the control modules of the individual ventilation modules and the lines running between them, which can also be referred to as control lines. The preparation of the compounds the bus system, that is, the connection of the control lines, is performed by the user or installer on site by plugging a corresponding cable at one or more of the external bus interfaces. In addition to logging onto a bus system, the external bus interface preferably also serves for communication, in particular for signal transmission from the control module to a control module of another ventilation module of the ventilation system. In particular, control signals, status inquiries, diagnostics, status information can be transmitted and / or received via the external bus interface, for example. In the case where the control module on which the external bus interface is provided is provided on the fume hood blower, the other ventilation module with the control module of which a bus communication connection is established is an additional module. If the bus interface is provided on the control module of an additional module, the other ventilation module is another additional module or the extractor fan. By the kitchen ventilation system according to the invention has a modular structure in which each ventilation module has a control module having at least one external bus interface at least for generating a bus communication connection with at least one control module at least one other ventilation module of the ventilation system, a number of Benefits are achieved. In particular, a splitting of the ventilation system into individual ventilation modules, which are brought back together by the bus communication connection, can be created. Thus, it becomes possible to assign a partial function to each ventilation module, which is brought together again by the networking by means of the bus communication connection to the overall function.

On the control module, other interfaces are preferably provided in addition to the external bus interfaces. Due to the interaction of the interfaces within the individual control module or between the different control modules of different ventilation modules, functional principles for the field of ventilation technology for the kitchen area are created.

Since in the ventilation system according to the invention each individual ventilation module is equipped with a control module, a number of advantages can be achieved and different concepts can be implemented. In particular, for example Each control module has its own power supply, as explained in more detail later. The control modules preferably have the same software. As a result, in particular an upgrade of the software is simplified. However, it is also possible according to the invention that a different software is used module-specifically. By the communication between the individual control modules via a bus system, the connection between the individual ventilation modules can be omitted by means of a mains voltage line. In addition, the ventilation system according to the invention is a modular ventilation system, in the control of which the individual modules react in association. The networking of the ventilation modules, which can also be referred to as ventilation equipment for the kitchen area, via the bus system. The number of control modules used in the network, which are also referred to below as subscribers, is not limited. The spatial arrangement of the ventilation modules, for example, the distance between the individual ventilation modules is not subject to any restriction.

In addition, the use of a bus communication between the control modules of the individual ventilation modules safety-relevant functionalities can be realized. For example, in the ventilation system according to the invention safety-related information can be detected at each of the control modules of the different ventilation module and distributed over the bus system. For example, a window switch can be connected to each of the ventilation modules of the ventilation system, for example to a roof fan. This has the advantage that, in contrast to the prior art, in which the window switch always had to be directly connected to the control unit of the hood, a simpler, in particular shorter wiring can be sufficient because the window switch can be connected to the nearest control module, that does not necessarily have to represent the fan in a cooker hood.

According to the invention, it is possible to exchange different types of information and signals between the control modules of the individual ventilation modules. For example, input signals that are received at a control module can be forwarded to another control module and converted there into a corresponding control signal for controlling the corresponding function of the ventilation module. According to one embodiment, however, each of the control modules is designed to generate at least one signal for controlling at least one function at least one other ventilation module and to direct it to at least one of the external bus interfaces. The one or more signals for controlling the control module of another ventilation module may be signals for activating the function of the other ventilation module, setting desired conditions on the other ventilation module and / or for deactivating the other ventilation module. The control signal for controlling the function, which can also be referred to as a control signal, can be generated on the basis of an input signal, which is input, for example via a control panel, by a user of the ventilation system. Alternatively or additionally, however, the control signal can also be generated, for example, on the basis of a signal which is detected in or on one of the ventilation modules, in particular on one of the control modules of the ventilation modules. Such a detected signal may for example be a sensor signal.

By designing each control module to control a different ventilation module of the ventilation system, a number of advantages can be achieved. In particular, for example, by the control module, which is assigned to the hood with dedicated control panel, a drive signal for activating the extractor fan can be generated. This can then be routed via the bus communication link to the control module on the extractor blower on which the activation of the extractor fan can then be done by internal wiring, in particular via the control line to the fan or more precisely to the extractor blower motor. In the same way, the drive signal for setting a desired fan level can be transmitted to the extractor fan. Finally, it is also possible to deactivate a ventilation module by generating a corresponding activation signal from one of the control modules of the ventilation modules of the ventilation system and via the bus interface to at least one further control module of another ventilation module. This may be necessary, for example, when a signal is detected on a control module or received from a window switch that the window is closed. In this case, a drive signal may be transmitted to the extractor fan after which the extractor fan is not to be operated or turned off. According to a preferred embodiment, the control modules of the at least two ventilation modules in the bus communication connection are equal. This means that the bus system has no master-slave architecture. An advantage that the equal involvement of the control modules has is that each control module can serve as an interface to another control module. This will make the configuration of the ventilation system more flexible. In addition, from each control module, for example, the switching off of the entire ventilation system, that is all control modules and thus all ventilation modules are effected. This is advantageous for safety reasons.

According to the invention, the ventilation modules of the ventilation system can be the extractor fan, an extractor hood, in particular an extractor hood with functions such as operation of the extractor fan, an additional exhaust fan, a supply air fan, a wall box or a roof fan. Also, several of these ventilation modules can be contained in a ventilation system, that is, connected to each other.

Preferably, the at least one control module has at least two external bus interfaces. The at least two, in particular exactly two, external bus interfaces are preferably internally wired to one another in the control module in such a way that they correspond to a T-piece in a communication connection. Due to the embodiment in which at least one, preferably all control modules have at least two external bus interfaces, connections with two further control modules in the bus system can be realized by a control module, so that each of the control modules in a communication chain of several control modules between two others Control modules can be connected.

According to a preferred embodiment, each of the control modules in each case has a power connection. Thus, preferably both control modules of active ventilation modules as passive ventilation modules, such as a cooker hood without internal fan, each have a power connection. The power connector may be a female connector for connecting a power cable or a fixed power cable. The embodiment in which each control module having a power connection, has a number of advantages. By providing power connections to the individual control modules, each ventilation module has its own decentralized power supply. As a result, the laying of long line voltage of leading lines from one ventilation module to another can be omitted. In particular, for example, the usually provided on the hood power supply must not be used for an external extractor fan or an additional fan. Thus, the problem of the prior art is eliminated in which the safety order 100m-ohms can not be guaranteed for long lines. However, since the control modules can still communicate with each other via the bus communication connections via the bus system, a common operation of the ventilation modules, on which the control modules are provided, can be realized. Thus, for example, a distance from an extractor hood extractor fan actuated via an operating unit on the hood, in particular be controlled.

According to one embodiment, at least one of the external bus interfaces on the at least one control module is designed as a customer service interface, that is, can serve as such. Thus, since a control module is provided on each of the ventilation modules in the ventilation system according to the invention, the customer service representative can easily carry out an analysis of the entire ventilation system. In particular, the customer service representative can perform a status query or a fault diagnosis via this interface. Here, the customer service representative can connect to any of the ventilation modules in the ventilation system or log in. Thus, for example, the most easily accessible for the customer service employee ventilation module or its control module can be selected for logging. Since the control modules are interconnected via the bus system, the service technician at each control module, the diagnosis of the entire ventilation system, that is, the diagnosis of remote and possibly poorly accessible ventilation modules, such as roof fans perform. Also, a software upgrade of all subscribers, including those who may be physically inaccessible, can be performed from any control module by the service technician or the user of the ventilation system by using one of the bus interfaces on the control module. Alternatively, it is also possible that a separate customer service interface is provided for each of the control modules. Also in this embodiment, a query of status data and / or an upgrade of each control module of the ventilation system for the entire ventilation system is possible due to the communication of the individual control modules with each other.

According to a further embodiment, each of the control modules of the ventilation modules of the ventilation system has at least one interface for an internal control line of a ventilation module. In this case, an internal control line is a wiring or wiring within the ventilation module, via which the functions of the ventilation module can be controlled. The interface for an internal control line of the ventilation module can in particular be an interface for a control line of a fan and be used for example for controlling the extractor fan, an additional fan and / or a Zuluftgebläses. Alternatively or additionally, however, the interface for a control line can also be an interface for actuating a shut-off element, for example on a wall box. A wall box configured with such a control module may also be referred to as an active wall box. By designing each control module in this way, the manufacture of the fan system can be simplified, since a separate production of different control modules for the different ventilation modules of the ventilation system is not required. Only the programming of the individual control modules can be adapted to the respective ventilation module, in which this is to be used, or adapted after installation.

The at least one external bus interface and - if provided - the at least one power connection to the at least one control module are preferably arranged so that they are accessible after installation of the control module in a ventilation module for the user of the ventilation system. In this way, the user can establish the connection of the control module to the bus system and optionally to the power supply even in the installed state of the control module. In addition, this embodiment is advantageous in order to interrupt the power supply if necessary or to facilitate the access to the service technician.

According to a further aspect of the invention, this relates to a method for controlling a ventilation system designed according to the invention. The procedure is thereby in that the information fed by a control module of a ventilation module into the bus communication connection is received at at least one control module of another ventilation module. Advantages and features that have been and will be described with regard to the control system, apply - as far as applicable - accordingly also for the inventive method and in each case vice versa.

According to the invention, the term information is understood as meaning signals which can comprise application signals, control signals, input signals, interrogation signals, status signals, upgrade signals and the like. In this case, information supplied as information fed in via the bus system consisting of control modules and control lines connecting them is transmitted or made available in the bus system. The injected information is preferably received at all weitren control modules of the ventilation system or can be retrieved from these.

The advantage that results from the method according to the invention is that information from or to a fume extractor fan, which is part of the ventilation system, can be supplied to or from further ventilation modules. As a result, partial functions of the ventilation system can be performed on each of the ventilation modules and these together fulfill the overall function of the ventilation system. The overall function of the ventilation system is, in particular, the adjustment and / or maintenance of desired environmental conditions in the kitchen area, which relate to the ventilation state of the kitchen area. In addition, all information relating to the ventilation system is available on each of the control modules or can be retrieved from each of the control modules.

According to a preferred embodiment, the input information comprises at least registration information on the bus system. In particular, in this context, login information represents address information along with state information, if desired. By allowing each control module to receive or retrieve the login information from each further control module, each control module may monitor the status of the entire ventilation system. Preferably, each control module, that is to say each participant in the ventilation system, which is also referred to as a composite or device network, is neutral in the delivery state. In addition, each control module can serve as an interface for connecting additional control modules to the ventilation system.

When the individual control modules of the ventilation modules are combined with the ventilation system, the ventilation system configures itself in terms of control technology. In particular, each connected control module logs on automatically in the ventilation system. Thus, a coding and registration of the individual control modules is not required. The automatic log on of the individual control modules has a further advantage, as this can be detected during the installation of the ventilation system, the number of control modules in the ventilation system. As will be explained in more detail later, this leads to the fact that a safety-relevant monitoring in the ventilation system and method according to the invention is possible.

According to a further embodiment, the information fed in are control signals, in particular control signals for controlling functionalities of at least one other ventilation module or can be converted at least into such control signals. The number of affected or activated ventilation modules is not limited here. Another advantage of this embodiment is that control signals from each ventilation module can be fed into the ventilation system and not just via a control unit of an extractor fan integrated in an extractor hood, as in the prior art. Thus, for example, a separate to the hood, that is external extractor fan can be easily integrated into the ventilation system. Other components, such as wall boxes or supply air fan can be easily integrated into the ventilation system. According to a preferred embodiment, the ventilation modules interconnected by the bus communication connection are checked.

In particular, in the method according to the invention, the presence and / or the operating state of the ventilation modules can be checked. As a result, for example, the Failure or omission of a ventilation module are detected. This embodiment can be used to implement safety-relevant functionalities.

The number of ventilation modules that are registered in the ventilation system and their operating status can be checked continuously. If a ventilation module is removed from the ventilation system, this is recognized as safety-relevant, with the result that individual functions of one or more ventilation modules, individual ventilation modules completely shut down, that is disabled. In addition to the pure number, it is also possible to check on the basis of the registration information which ventilation module has failed or has fallen away. For example, if the extractor blower is used, a wallbox may continue to be activated to be open. If, however, it is determined that the wall box has failed and that no more air can be removed from the kitchen, it may be necessary to switch off the extractor housing. The control for the different cases is preferably stored in the control modules of the ventilation system.

Preferably, when detecting the elimination of a ventilation module all ventilation modules are turned off. The omission of a ventilation module is understood to mean, in particular, the failure or unavailability of the control module assigned to the ventilation module. However, even the recognition of the lack of functionality of the ventilation module itself, which may be present as state information to the corresponding control module, for example, be identified as detecting the omission of the ventilation module. The embodiment of the method, in which all ventilation modules are switched off when the removal of a ventilation module is detected, may be restricted to individual safety-relevant ventilation modules. Thus, in the bus system, in particular be deposited in the individual control modules, the omission which ventilation module should lead to shutdown of all ventilation modules.

The ventilation module, the removal of which leads to such a consequence can in particular be predefined, or it can be provided that regardless of which of the ventilation modules off or goes off the entire ventilation system is turned off. The invention will be explained again below with reference to the accompanying drawings. Show it:

Figure 1 is a schematic perspective view of an embodiment of the control module for the ventilation system;

FIG. 2 shows a schematic side view of the embodiment of the control module according to FIG.

Figure 3 is a schematic representation of an embodiment of a ventilation module of the ventilation system according to the invention;

Figure 4 is a schematic representation of another embodiment of the control module for the ventilation system;

FIG. 5 shows a schematic block diagram of an embodiment of the ventilation system;

FIG. 6 shows a schematic block diagram of a further embodiment of the ventilation system;

FIG. 7 shows a schematic block diagram of a further embodiment of the ventilation system;

FIG. 8 shows a schematic block diagram of a further embodiment of the ventilation system;

FIG. 9 shows a schematic block diagram of a further embodiment of the ventilation system; and

FIG. 10 shows a schematic block diagram of a further embodiment of the ventilation system. FIGS. 1 and 2 show a schematic illustration of an embodiment of a control module 1 for the ventilation system 3 according to the present invention. In the illustrated embodiment, the housing 10 of the control module 1 is shown with the terminals X provided thereon. In the housing 10, a control board (not visible) is provided. The assignment of the connections can be defined according to one embodiment as follows:

X1: External bus interface 1

X2: External bus interface 2

X3: mains connection

X4: Protective earth

X5: Protective earth

X6: Mains voltage - power supply additional board

X7: Mains voltage - power supply blower

X8: Mains Voltage - Power Supply Light Transformer 1

X9: mains voltage - power supply light transformer 2

X10: control line blower

X1 1: D-Bus interface 1

X12: D-Bus interface 2

X13: D-Bus interface 3

X14: Interface control unit IR receiver

X15: switch input

X16: potential-free contact (output)

X17: window switch

X18: Service interface

X19: In Circuit Programming

S1: Reset button

The control module 1 thus has two external bus interfaces X1 and X2. Via these bus interfaces X1, X2, a bus communication connection to another control module 1, which is assigned to another ventilation module 2 of the ventilation system 3 and in particular arranged on or in this can be produced. To the ports or interfaces X1 and X2 corresponding lines are connected, via which the bus communication link from the control module. 1 can then be made, these lines are also referred to as control lines 13 (see Figure 5).

Depending on the use of the control module 1 in the ventilation system 3, the further interfaces X can be occupied, that is to say connected. However, it is also within the scope of the invention that at least some of the interfaces X remain unused.

FIG. 3 shows an embodiment of a ventilation module 2 for the ventilation system 3. In the illustrated embodiment, the ventilation module 2 represents the extractor blower 22 in the form of a blower module. The control module 1 is attached to the blower housing 220. In the blower housing 220, the actual fan 221 of the extractor blower 22 is further included. In Figure 3, the fan housing 220 is shown without cover to allow insight into the internal structure. Preferably, however, the fan housing 220 is also terminated on the side surfaces and the top of a housing wall (not shown).

As can be seen from FIG. 3, the control module 1 is provided on the ventilation module 2, which constitutes the extractor blower 22, such that both the mains connection X3 and the two external bus interfaces X1 and X2 are accessible from outside even with the blower housing 220 closed ,

FIG. 4 shows a further embodiment of a control module 1 according to the present invention. In the illustrated embodiment, the control module in addition to the control module 1 shown in Figures 1 and 2 additionally comprises an additional board 1 1, which may be housed together with the housing 10 in a further housing 12. Also in this embodiment, the terminals X3, X2, X1 are accessible from outside the housing 12. In addition, even a connection 1 10 for the additional board 1 1 from outside the housing 12 of the control module 1 is accessible. As a result, further functions, which may not be covered by the control board provided in the housing 10, may be realized.

Various embodiments of the ventilation system 3 according to the present invention are shown in FIGS. In FIG. 5, the ventilation system 3 consists of two ventilation modules 2, one ventilation module 2 representing the extractor hood 21 and the second ventilation module representing the extractor fan 22 in the form of an exhaust fan 23. The two ventilation modules 2, namely the extractor hood 21 and the exhaust fan 23 each have a control module 1. The control modules 1 are connected to one another via a control line 13. In particular, the control line 13 represents a line for the transmission of signals via the bus system. Therefore, the control line 13 at the control modules 1, if these, as shown in Figures 1 and 2, are formed, to one of the bus interfaces X1, X2 connected.

In addition, in the embodiment of FIG. 5, a power line 14 is connected to each control module 1 and thus to each ventilation module 2. The power lines 14 are connected to the control modules 1, provided that they are, as shown in Figures 1 and 2, connected to the power supply terminal X3.

Furthermore, a control part 210 is shown schematically in FIG. This control panel is provided in the illustrated embodiment of the hood 21, in particular to be installed in this. The control unit 210 may be formed as an IR receiver to receive IR signals from another, not shown, control element, which is designed separately to the extractor hood 21. The control unit 210 communicates with the control module 1 of the extractor hood 21, provided that, as shown in Figures 1 and 2, is formed, via the interface X14, that is the interface control panel IR receiver. However, it is also possible that the interface X14 is designed for receiving signals by means of other wireless communications or for wired communication.

In the embodiment of the ventilation system 3 shown in FIG. 5, the control can be carried out as follows.

As soon as the control module 1 of the extractor hood 1 and the control module 1 of the extractor blower 22 are connected to one another via the bus interfaces X1 or X2 and are switched on, each of the control modules 1 logs on to the bus system thus generated. The control modules 1 are equal participants of the bus system. If an instruction is then given by the user of the ventilation system 3, for example by means of a control element (not shown), to operate the ventilation system 3 at a fan level three of the extractor blower 22, this instruction is received, for example, as an IR signal on the control module 1 of the extractor hood 21 , In this case, the control module 1 of the extractor hood 21 recognizes that a cable is not connected to either the connection X7 or the connection X10 and converts the input signal into a bus signal, that is to say a bus protocol of the external bus interface X1 or X1 X2 corresponding signal to. Alternatively, instead of checking the occupancy, a corresponding presetting may also have been made on the control module 1, in particular in the form of a programming. The input signal that the extractor fan 22 is to be operated at a fan level three is thus fed as a bus signal into the bus system. The extractor fan 22, which is a participant in this bus system, receives this signal via the control line 13. At the control module 1 of the extractor blower 22, this signal is then converted into a corresponding control signal and output at the corresponding connection, in particular X10. The connected or connected to this port or this interface fan 221 of the extractor fan 22 is thereby brought to fan speed three. Alternatively, however, the input signal can also be converted into a corresponding control signal in the control module 1 of the extractor hood 21 and this control signal can then be transmitted via the bus system to the extractor blower 22 or its control unit.

Other signal transmissions between the control modules 1 of the extractor hood 21 and the extractor blower 22 can be transmitted in a corresponding manner via the bus system by means of the control line 13.

In the embodiment shown in FIG. 5, there are thus obtained some of the advantages which can be achieved according to the invention. For example, the extractor fan 22 may be located at any location also consist of the hood 21, on the other hand, due to the decentralized power supply to the individual ventilation modules 2, namely the extractor fan 22 and the hood 21, a complex wiring that meets the safety standards for voltage transfer , not mandatory. FIGS. 6 and 7 show two different embodiments of the ventilation system 3 according to the invention, wherein the ventilation modules 2 of these embodiments are identical and the embodiments differ only over the course of the bus system.

In FIGS. 6 and 7, the ventilation system 3 comprises an extractor hood 21, an extractor fan 22, which is designed as an exhaust fan 23, and a further exhaust fan 23, which in this embodiment represents an additional fan. In addition, two wall boxes 26 are provided as further ventilation modules 2 in the ventilation system 3.

In Figure 6, these ventilation modules 2 are connected to each other in the bus system that the hood 21 is connected to a first with the extractor fan 23 via a control line 13 and the other with the auxiliary fan, which is an exhaust fan 23, via a further control line thirteenth connected is. Each of the fans 22, 23 is in turn connected via a control line 13 to one of the wall boxes 26. The bus system thus runs from a wall box 26, via the exhaust fan 23, the extractor hood 21 and the extractor blower 22 to the second wall box 26 or vice versa. A control line between the two wall boxes 26 is not provided. The connection of the individual ventilation modules 2 by means of the control lines 13 via the corresponding control modules 1 of the ventilation modules 2, but will not be mentioned here in the description for better understanding each time explicitly. The connection of a ventilation module 2 and in particular of the control module 1 of the ventilation module 2 with two weitren ventilation modules 2 can be done in the embodiment of the control modules according to the invention by connecting two control lines 13 to two external bus interfaces X1, X2 of the control module 1. In the embodiment shown in FIG. 6, each of the ventilation modules 2 is connected to the bus system so that bus communication between all the ventilation modules 2 of the ventilation system 3 can take place. For example, via the extractor hood 21, in particular via a control unit, not shown in FIG. 6, an instruction of the user can be made, the exhaust fan 23 at a specific fan level to operate and open the wall boxes 26. This instruction is received in the control module 1 of the extractor hood and converted into a bus signal in the absence of a wired connection of the components at the corresponding interfaces X of the control module. The signal is transmitted via the bus interfaces X1 and X2 in the bus system and the corresponding ventilation modules 2, in particular exhaust fan 23 and wall boxes 26 so get the bus signal. At the individual ventilation modules 2, this bus signal is converted into a corresponding control signal and the instruction is output as a control signal via one of the connections, for example X10.

In FIG. 7, the bus communication deviates from the embodiment shown in FIG. In a departure from the embodiment according to FIG. 6, no control line 13 is provided between the exhaust fan 23 and the extractor hood 21 in this embodiment. Instead, however, the two wall boxes 26 are connected to each other via a control line 13. Thus, in the embodiment according to FIG. 7, the bus system runs from the extractor hood 21 via the extractor fan 22, the two wall boxes 26 to the exhaust fan 23 or vice versa. Also in this embodiment, each of the ventilation modules 2 is connected to the bus system, so that a bus communication between all ventilation modules 2 of the ventilation system 3 can take place.

FIG. 8 shows a further embodiment of the ventilation system 3 according to the present invention. This embodiment corresponds to the embodiment shown in FIG. However, in the ventilation system 3 of Figure 8, only a wall box 26 is present and instead of the auxiliary fan, which is an exhaust fan 23, a Zuluftgebläse 24 is provided in the embodiment of Figure 8.

FIG. 9 shows a ventilation system 3 which has the following ventilation modules 2. On the one hand, the ventilation system 3 comprises an extractor hood 21 and, on the other hand, an extractor fan 22, which is configured as an exhaust fan 23. Furthermore, the ventilation system 3 comprises a supply air opening, which may for example constitute a window with a window switch 25 provided thereon. The window switch 25 serves to monitor the state of the supply air opening. In particular, thus detected by the window switch 25, whether the supply air opening, in particular the window is open or closed.

The window switch 25 is not a ventilation module 2 in the sense of the invention. In particular, no control module 1 is provided on the window switch 25. Rather, the window switch 25 may be formed by a sensor which is connected directly via cable or a wireless connection to the control module 1 of the extractor hood 21, that is in particular connected to a corresponding terminal, for example X17 of the control module 1 according to Figures 1 and 2.

Finally, FIG. 10 shows a further embodiment of the ventilation system 3. However, in the embodiment shown in FIG. 10, the window switch 25 at the inlet air opening is not connected to the extractor hood 21 but to the extractor fan 22 designed as an exhaust fan 23.

In the embodiments shown in FIGS. 6 to 10, a power line 14 for the power supply is preferably connected to each control module 1. These are not shown in the figures but for better visibility.

The present invention thus provides a solution in which by means of several control modules, a modular ventilation system, which can also be referred to as a device concept, can be implemented for the kitchen ventilation.

In particular, the present invention provides a simple control for a modular device concept. This allows the construction of complex ventilation systems for the kitchen area by combining individual ventilation modules.

The present invention has a number of advantages. In particular, a lightweight, self-explanatory configuration of the ventilation system, which can also be referred to as a ventilation system, created for the kitchen area. Furthermore, the power supply of the individual ventilation modules can be decentralized in the present invention. The wiring effort with safety-relevant power cables can therefore be omitted. In addition, the number of participants, in particular control modules of ventilation modules in the device network is not limited. This is advantageous, for example, in comparison with the solution with a so-called "switching amplifier", in which the number of participants should be restricted for reasons of safety.Furthermore, there are no electrotechnical restrictions with respect to the distance between the individual ventilation modules, so that the subject of safety grounding in the case of the invention The present invention also makes possible a simplified installation of the device network due to unnecessary coding of the individual control modules in the configuration of the ventilation system, ie the ventilation system.Also, a "self-monitoring" of the device network is created as a safety-related aspect and in case of failure a subscriber, that is a control module or a ventilation module, the entire device network is no longer operational. Finally, a good accessibility for the service technician can be created by decentralized interfaces.

LIST OF REFERENCE NUMBERS

I control module

10 housing

I I additional board

1 10 Additional board connection

12 housing

13 control line

14 power line

X1: External bus interface 1

X2: External bus interface 2

X3: mains connection

X4: Protective earth

X5: Protective earth

X6: Mains voltage - power supply additional board

X7: Mains voltage - power supply blower

X8: Mains Voltage - Power Supply Light Transformer 1

X9: mains voltage - power supply light transformer 2

X10: control line blower

X1 1: D-Bus interface 1

X12: D-Bus interface 2

X13: D-Bus interface 3

X14: Interface control unit IR receiver

X15: switch input

X16: potential-free contact (output)

X17: window switch

X18: Service interface

X19: In Circuit Programming

S1: Reset button

2 ventilation module

20 housing Hood

control panel

Extractor fan

fan housing

Fan

exhaust fan

Supply fan

window switch

wall box

ventilation system

Claims

1 . Ventilation system for the kitchen area, comprising a ventilation module (2), which is a fume hood blower (22), and at least one further ventilation module (2), characterized in that each ventilation module (2) has a control module (1), the at least one external Bus interface (X1, X2) at least for generating a bus communication connection with at least one control module (1) at least one other ventilation module (2) of the ventilation system (3).

2. Ventilation system according to claim 1, characterized in that each of the control modules (1) is adapted to generate at least one signal for controlling the at least one at least one function of the at least one other ventilation module (2) and to at least one of the external bus modules. Routing interfaces (X1, X2).

3. Ventilation system according to one of claims 1 or 2, characterized in that the control modules (1) of the at least two ventilation modules (2) in the bus communication connection are equal.

4. Ventilation system according to one of claims 1 to 3, characterized in that the further ventilation module (2) an extractor hood (21), an exhaust fan (23), a Zuluftgebläse (24) or a wall box (26).

5. Ventilation system according to one of claims 1 to 4, characterized in that at least one control module (1) has at least two external bus interfaces (X1, X2).

6. Ventilation system according to one of claims 1 to 5, characterized in that each of the control modules (1) each have a power connection (X3). Ventilation system according to one of claims 1 to 6, characterized in that the at least one of the external bus interfaces (X1, X2) on the at least one control module (1) serves as a customer service interface.

Ventilation system according to one of claims 1 to 7, characterized in that each of the control modules (1) of the ventilation modules (2) of the ventilation system (3) has at least one interface (X10) for an internal control line of a ventilation module (2).

Method for controlling a ventilation system according to one of Claims 1 to 8, characterized in that the information fed by a control module (1) of a ventilation module (2) into the bus communication connection is received at at least one control module (1) of a further ventilation module (2) become.

A method according to claim 9, characterized in that the information supplied at least registration information on the bus system.

Method according to one of claims 9 or 10, characterized in that the information fed in control signals, in particular control signals for controlling functionalities of at least one other ventilation module (2).

Method according to one of claims 9 to 1 1, characterized in that the interconnected by the bus communication connection ventilation modules (2) are checked and upon detection of the omission of a ventilation module (2) all ventilation modules (2) are turned off.