Patent Description:
When balancing ventilation systems, the permanent dampers of the systems have to be adjusted in the ventilation system. At least two operators work together to adjust the dampers to set airflow through supply diffusers to match predetermined specifications. One of the operators lifts up and holds a capture hood airflow probe against a diffuser, reads a meter attached to the capture hood and informs the second person, who has taken a position at the damper for adjusting its setting. The damper controlling the diffuser may be situated in the same space close to the diffuser or in another space of the building. A stand or jack can be employed to hold the capture hood against the diffuser. It that case, if the service person is alone, the person has to leave the damper, walk to the capture hood, read the result on the meter and return to the damper to make another adjustment. The described procedure may be iterated a couple of times until the airflow through the diffuser fulfills the specification or wanted air flow.

The procedure becomes more laborious if the procedure involves long distance between the diffuser and damper and climbing of ladders to be able to reach the damper and/or read the air flow meter of the capture hood.

A common example is the Proportional Balancing Method. Specifications often require that supply air diffusers be adjusted so that their airflows are all the same percentage of a specified airflow. For instance, if there are three diffusers, and the air available is <NUM>% less than specified, then each air diffuser should be set to <NUM>% of the specified flow.

Duct systems with dampers and supply diffusers and return grills have paths of resistance for airflow that are interrelated. That is, if one path is made more resistant to airflow by adjustment of a damper, the airflow adjusts and changes elsewhere in the system. This makes it difficult to set dampers so that they let the specified amount of air through. Usually the diffuser furthest from the fan is set by adjusting its damper. Then a second damper is adjusted. Then, the first diffuser must be measured again to determine if the second adjustment caused such a change in duct airflow distribution that the first airflow distribution that the first diffuser airflow became out of range. The two dampers are adjusted again until they are both in spec. Then a third damper is adjusted. This continues until all diffusers on the same branch of the duct system are within the specified range. This takes a long time, with many repeated measurements. Each diffuser must be measured independently, one at a time, despite the fact that they are part of a connected and interdependent system. This method is repetitious and wastes time. It leads to compromise and non-ideal outcomes.

<CIT> discloses to a wireless air-volume damper control system where it is desired to regulate air volumes in ducted air handling systems by remote adjustments of each volume control damper.

<CIT> discloses a system, method, and apparatus for balancing diffuser terminals in heating, ventilation, and air conditioning (HVAC) systems in commercial buildings or similar structures.

One object of the following disclosure is to describe and provide a faster and less laborious solution for balancing a ventilation system than described above.

According to a first aspect, the object is provided by means of a balancing system for wireless adjustment of the operation settings of a ventilation system. The ventilation system comprises an air conductor system of ventilation conduits for conducting air flow in one or more branches and a plurality of conduit inlets or outlets and one or more permanent control components for manual setting and control of the air flow in the conduit inlets or outlets and/or in the air conduit of one or more branches. The balancing system comprises one or more portable, detachable adjustment components, which during the balancing of the ventilation system are attached on the conduit inlets or outlets and/or in the air conduits of the one or more branches thereby temporary replacing the permanent control components to allow adjustment of the manual damper settings controlling the air flow. The balancing system comprises a system controller for controlling said portable, detachable adjustment components, wherein said balancing system controller comprises a programmable processor. Said balancing system controller comprises a transceiver configured to receive measured operation data from the active adjustment components, wherein the programmable processor is configured to calculate by using the operation data a damper setting value of each of the active adjustment components that controls the air flow through the conduit inlets or outlets. Said balancing system controller adjusts by sending via the transceiver the calculated damper setting values to the active adjustment components and receives via the transceiver measured operation data based on the calculated damper setting values from the adjustment components. The balancing system controller is configured to indicate via display that the ventilation system is in balance and the permanent control components can be adjusted to the calculated damper setting values and reinstated. The balancing system controller is configured to request the operator via the display for new damper settings if the ventilation system is not in balance and/or the operation data do not fulfill specified conditions, receive at least one new damper setting value, and to send said at least one new damper setting value to one or more of the adjustment components.

According to a second aspect, the object is provided by means of a method for wirelessly balancing a ventilation system comprising an air conductor system of ventilation conduits for conducting an air flow, a plurality of conduit inlets or outlets and/or in an air conduit of one or more branches of the air conductor system and permanent control components for manual setting of the air flow in the conduit inlets or outlets. During the balancing of the ventilation system, the permanent control components are temporary replaced with portable, detachable adjustment components which are configured to be attached on the conduit inlets or outlets and/or in the air conduits of the one or more branches of the air conductor system to allow adjustment of the manual damper settings controlling the air flow of the permanent control components in at least some of the inlets or outlets and/or one or more branches. A balancing system controller for controlling said portable, detachable adjustment components is further configured to perform the steps of receiving measured operation data from the active adjustment components, calculating by using the operation data a damper setting value of each of the active adjustment components that controls the air flow through the conduit inlets or outlets, adjusting by sending the calculated damper setting values to the active adjustment components, receiving measured operation data based on the calculated damper setting values from the adjustment components, and indicating that the ventilation system is in balance and the permanent control components can be adjusted to the calculated damper setting values and reinstated. If, in the method, the ventilation system is tested to be not in balance and/or the operation data differs from a ventilation system specification, test result "No", the balancing system controller (<NUM>) is configured to make a modification of step, the method additionally comprises: Requesting (S172) operator for new damper settings if the ventilation system is not in balance and/or the operation data do not fulfill specified conditions;.

One advantage of the balancing system and method is that a lot of time is saved.

Another advantage of the balancing system and method is that the system and balancing process can be performed by only one person.

The foregoing, and other, objects, features and advantages of the present technique will be more readily understood upon reading the following detailed description in conjunction with the drawings in which:.

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular circuits, circuit components, techniques, etc. in order to provide a thorough understanding of the present technique. However, it will be apparent to one skilled in the art that the present technique may be practiced in other embodiments that depart from these specific details insofar as they are comprised in the scope of the claims. In other instances, detailed descriptions of well-known methods, devices, and circuits are omitted so as not to obscure the description of the present technique with unnecessary detail.

In the following description, the term ventilation system includes any ventilation system that either is working with an internal air pressure above ambient air pressure or an internal air pressure below the ambient air pressure.

<FIG> is illustrating a ventilation system <NUM>. The ventilation system comprises an air conductor system <NUM> (within a dot-dashed line in <FIG>) with air conduits <NUM> such as air ducts and pipes for delivering air to different spaces, rooms or zones, S1, S2,. , Si (marked as dashed lined areas in <FIG>) of a building for heating, ventilation, cooling and/or air conditioning (HVAC), wherein i = <NUM>, <NUM>, <NUM>,. In the figures, only <NUM> spaces are illustrated, but the number of spaces may be both more or less than <NUM>. At least one electrical motorized fan <NUM> is arranged for moving the air in the air conductor system <NUM>. Conduit inlets or outlets <NUM> are arranged on the air conduits <NUM> for conducting the air flow into or out, respectively, of a space. The flow of air into or out of each space is adjusted and regulated by a respective permanent control component <NUM>, also identified as PD1, PD2,. , PDk, arranged in the air conductor system <NUM>, wherein k = <NUM>, <NUM>, <NUM>,. In the figures, a limited number of permanent control elements <NUM> are illustrated, but the number of permanent control elements <NUM> may be both more or less than <NUM>. With a permanent control component is meant that the control component is used for and during the regular operation of the ventilation system, i.e. as a regular control component. Thus, a permanent control component could also be denoted as a regular control component. The permanent control component may be a permanent damper or diffuser or a combination of a diffuser and damper. The permanent control component <NUM> is placed in an outlet/inlet <NUM> of the air conduit <NUM> or in the air conduits for controlling one or more separate branches <NUM> of the air conductor system <NUM>. At least one of the permanent control components <NUM>,<NUM> is manually adjusted by an operator. PDkset is a damper setting value of an arbitrary permanent control component k. Each permanent control component PD1, PD2 is manually adjustable between a minimum damping setting PD1min, PD2min,. to a maximum damping setting PD1max, PD2max,.

The operation data involve different operation parameters or variables and operation conditions may be specified in a ventilation system specification. When the ventilation system is in balance, the measured operation data is equal to or within a range of the specified operation data and fulfills conditions defined by the ventilation system specification. As described in the background part of this document, it may be a very time consuming and laborious procedure to balance a ventilation system.

A balancing system and balancing method is therefore provided for speeding up the balancing procedure and minimize the time and number of persons needed for balancing a ventilation system in comparison to known balancing procedures. The method is enabled by means of the balancing system.

<FIG> is illustrating an embodiment of a balancing system <NUM> for balancing a ventilation system. In general, a system <NUM> comprises one or more portable, detachable adjustment components <NUM> which are configured to be attached on the conduit inlets or outlets <NUM> and/or in the air conduit of one or more separate branches <NUM> of the air conductor system <NUM> to allow adjustment of the air flow during balancing of the ventilation system <NUM>, see <FIG>. The balancing system <NUM> further comprises a balancing system controller <NUM> for controlling said portable, detachable adjustment components <NUM>, said controller <NUM> being configured to receive measured operation data from active adjustment components <NUM>, calculating a damper setting value of each active adjustment component that controls the air flow through the conduit inlet or outlet <NUM>, and thereafter, adjusting by means of the calculated damper setting values the adjustment components <NUM>, receiving new measured operation data based on the sent calculated damper setting values from the adjustment components during the operation of the ventilation system, repeating said adjustment, measuring and calculation steps until the ventilation system is in balance. The permanent control components are thereafter adjusted according to respective calculated damper setting value resulting in the ventilation system to be in balance. The permanent control components could be considered to be balanced with the system. The adjustment component <NUM> are thereafter detached and replaced by the corresponding balanced permanent control components <NUM>,<NUM> before the regular operation of the ventilation system is started.

The difference between the permanent control components <NUM>,<NUM> and the portable, detachable adjustment components <NUM> is that, besides that the adjustment components <NUM> are portable and detachable, the adjustment components comprise a component control unit <NUM> which is connected to a measurement component <NUM> comprising one or more sensors for measuring operation data of the air in the ventilation system. The adjustment components have a more complicated construction than the permanent control components as the adjustment components comprise more technical devices than the permanent control components that each only comprises an adjustable damper device as active element. The permanent control components are therefore cheaper to manufacture than the adjustment components. A ventilation system only comprising adjustment components would be much more expensive than a ventilation system comprising only adjustment components that are not configured to measure and communicate operation data of the ventilation system. Therefore, when the ventilation system is in balance and the measured operation data fulfills specified ventilation system conditions set in a ventilation system specification after the balancing method is stopped, in that case, the permanent control components can be reinstated when adjusted according to the damper setting value indicated on the setting system controller displays.

<FIG> is showing one adjustment component <NUM> attached to a part of an air conduit <NUM> replacing one permanent control component (<NUM> in <FIG>) and one adjustment component <NUM> to be attached (see the indicated arrow) to an inlet or outlet of the air conduit <NUM>, from which outlet or inlet a permanent control component (<NUM> in <FIG>) has been temporary detached during the balancing process.

The component <NUM> comprises a hollow body <NUM> with opened ends, wherein one end of the hollow body <NUM> is adapted to be detachably and temporary attached to a conduit inlet or outlet <NUM> forming an airtight seal between the two. An adapter <NUM> may be used for achieving an airtight seal, especially if there is a difference regarding the dimensions of the inlet/outlet <NUM> and the end to be attached to the inlet/outlet <NUM>. Said end of the hollow body <NUM> may preferably comprise a kind of locking device (not shown) which is easy to handle and which is enabling quick attachment before the balancing procedure is started and release when the balancing procedure is finished. Both ends are open for letting air to flow through the hollow body <NUM>. The body construction is of stiff and light weight material, e.g. plastic, composite or light weight metal.

In <FIG>, the hollow body construction of the adjustment component is further configured for allowing and enabling temporary attachment of the adjustment component <NUM> into an air conduit <NUM>. A permanent control component <NUM> (see <FIG>) is during regular operation of the ventilation system placed in the air conduits for controlling the air flow, e.g. to or in a separate branch <NUM> (see <FIG>). During the balancing procedure the permanent control component <NUM> is replaced with an adjustment component <NUM>. Both ends of the hollow body <NUM> comprise therefore a kind of locking device (not shown) which is easy to handle and which is enabling quick attachment and detachment to the free and open ends of the conduit. Adapters <NUM> in one end or both ends of the hollow body <NUM> may be used for achieving airtight seals, especially if there is a difference regarding the dimensions of the hollow body construction <NUM>. Said adapters <NUM> may also be flexible in the longitude direction of the hollow body for adaptation to the distance between the open air conduit ends and the open ends of the hollow body <NUM>.

The adjustment component <NUM> further comprises a component control unit <NUM> that may be attached outside the hollow body <NUM> for not disturbing the air flow inside the hollow body. The component control unit <NUM> of the adjustment component <NUM> is connected to a measurement component <NUM> comprising one or more sensors for measuring operation data of the air flow and a damper <NUM> for regulating the air flow through the hollow body. The damper <NUM> is connected to an electric actuator or electric motor <NUM>, which controls the damper setting by means of a component controller <NUM> to which it is electrically connected. The component controller <NUM> is also connected to a display <NUM>. The component control unit <NUM> comprises an electric power source <NUM>, e.g. one or more batteries. The battery may be chargeable, but ordinary replaceable batteries may as well be used. The electric power source is via a switch connected to and powers the electric circuits of the adjustment component, i.e. the component controller <NUM>, a transceiver <NUM>, the electric actuator or electric motor <NUM>, the display <NUM> and the measurement component <NUM>. The operator may switch the adjustment component on or off by means of the manually actuated switch. The component controller <NUM> is configured to be set in different operation modes, e.g. off or on, and different display modes by means of a key pad (not shown). In the operation mode "off" the adjustment component is not active, and in operation mode "on", the adjustment component is active. In the display modes, different parameters and their values are selectable to be shown on the display <NUM>. Parameter values of the measured operation data may be selected and displayed. Further, the calculated damper setting value of the damper <NUM> of the adjustment component which damper setting value will be used as the damper setting value PDkset of the permanent control component k could be provided by the component controller <NUM>.

The component controller <NUM> is connected to the measurement component <NUM> which provides measured operation data, e.g. the variable parameters air flow velocity, pressure, temperature, humidity. The component controller <NUM> may therefore be configured to control the measurement process of the component controller, wherein the operation data is measured continuously or within discrete time periods or at discrete time points. The operation data is handled and/or processed by the component controller <NUM> and inserted in a suitable protocol, e.g. Internet Protocol, etc..

The protocol may comprise besides the operation data also identity information of the adjustment component <NUM>, location of the adjustment component <NUM> in the ventilation system, identity of the permanent control component that controls the air flow through the conduit inlet or outlet <NUM> where the adjustment component <NUM> is situated.

The protocol is provided to a transceiver <NUM> of the component control unit <NUM>, which is adapted to wirelessly communicate with the balancing system controller <NUM> for controlling said portable, detachable adjustment components <NUM>.

The balancing system controller <NUM> can be handled and operated by one single person, an operator. The balancing system controller <NUM> is therefore provided with a display <NUM> and a keyboard <NUM>. Said controller <NUM> is configured to receive the sent protocol comprising measured operation data from active adjustment components <NUM> by means of a controller transceiver <NUM>. An active adjustment component <NUM> is herein a component <NUM> that is attached to the ventilation system and activated for measurement and control of the air flow. The balancing system controller <NUM> comprises the controller transceiver <NUM> and a programmable processor <NUM> connected to the controller transceiver <NUM>, the display <NUM> and the keyboard <NUM>. The programmable processor <NUM> comprises computer program software which enables the processor <NUM> to process the received operation data from all active adjustment components <NUM> and to calculate a damper setting value of each active adjustment component <NUM> that controls the air flow through the conduit inlet or outlet <NUM> where the adjustment component <NUM> is situated. The balancing system controller <NUM> may be portable. In that case, the system controller is powered by means of an electric battery <NUM>, chargeable and/or exchangeable. When the programmable processor <NUM> has received all operation data from all active adjustment components <NUM> in real time, continuously, or during a discrete time period or at discrete time point, the processor <NUM> calculates a separate damper setting value for each active adjustment component <NUM>. Said damper setting values of the active adjustment components <NUM> are inserted in protocols, which are addressed and sent to the respective adjustment component <NUM> to which the setting value belongs.

The transceiver <NUM> of the balancing system controller <NUM> is configured to establish contact and send each protocol to the control unit <NUM> of the adjustment component <NUM> to which the protocol is addressed.

When the transceiver <NUM> of the adjustment component <NUM> receives a protocol, it is configured to deliver the protocol to the component controller <NUM>. The component controller <NUM> reads the damper setting value.

Alternatively, all damper setting values are inserted in a list in one protocol that is broadcasted to all adjustment components <NUM> in the system. In this case, the list indicates which damper setting value that belongs to which adjustment component <NUM>. The component controller <NUM> is configured to read the list and locate the damper setting value belonging to its active adjustment component <NUM> and neglect or reject damper setting values belonging to other active said adjustment component <NUM>.

When the component controller <NUM> has read the damper setting value, the component controller <NUM> adjusts its damper <NUM> by means of the calculated setting value. The calculated damper setting value is transformed to a corresponding control signal by the component controller <NUM>, which control signal is used for actuating the electric actuator or electric motor <NUM> to set the damper controlling the air flow in correct position, PDkset.

When all the dampers <NUM> are set and the ventilation system is in balance, the calculated damper setting value of the damper <NUM> of the adjustment component may be the same as the damping setting value PDkset of the permanent control component to be used as the balanced setting value. But the permanent control components used in a system may vary in the system as well from system to system. When transferring the computed damper setting value of an adjustment component to a permanent control component of the same position in the ventilation system, the damper setting value of an adjustment component may have to be adapted to the technical and operation data of the permanent control component. The technical and operation data of the permanent control component may vary from manufacturer to manufacturer of such components as well as different types of permanent control components. The computed damper setting value is therefore multiplied with a correction factor to achieve a corrected damper setting value for adjusting the setting of the permanent control component. Said correction factor is therefore specific and selected in dependency to the type and manufacturer of the permanent control component. The specific correction factor to the type and manufacturer of the permanent control component could be stored in a memory of the balancing system controller <NUM>. Further, the operator can use the keyboard and display to prepare the balancing system controller <NUM> by identifying the type and manufacturer of the permanent control component located on each position in the ventilation system. The balancing system controller <NUM> is therefore configured to select and use a correction factor in dependence of the position of the permanent control component in the ventilation system when transferring the computed damper setting value of an adjustment component to a permanent control component.

The damper setting value to be used when adjusting the permanent control component is provided by the component controller <NUM> to the display <NUM>, which is read by an operator that manually adjusts the permanent control components according to the indicated, calculated value, which is the balanced value in the balanced ventilation system. The adjustment component <NUM> is thereafter detached and replaced by the adjusted permanent control component.

When all the damping settings of the permanent control components have been adjusted, all the adjustment components <NUM> have been detached and removed and replaced with the permanent control components. The ventilation system as illustrated in <FIG> now runs with the settings of the permanent control components <NUM>,<NUM> adjusted to their balanced values by the operator by indication of the measurement and control system.

According to one embodiment of the balancing system, the balancing system controller <NUM> is connected to and configured to communicate wirelessly via the transceiver <NUM> with each active adjustment component <NUM> comprising a transceiver <NUM>. Said transceivers <NUM>, <NUM> are configured to receive and transmit messages according to any wireless RF (Radio Frequency) technology, e.g. used such as Wi-Fi or any available telecommunication radio standard, e.g. <NUM>, <NUM> or <NUM>.

According to further one embodiment of the balancing system, the balancing system controller <NUM> is portable or locally situated.

According to further one embodiment of the balancing system, the balancing system controller <NUM> is implemented as one or more virtual machines assigned to computer resources in a cloud service.

According to yet one embodiment of the balancing system, the computed damper setting value is multiplied with a correction factor to achieve a corrected damper setting value for adjusting the setting of the permanent control component. The correction of the damper setting value may be performed in either the balancing system controller <NUM> or the component controller <NUM>.

According to another embodiment of the balancing system, the measurement component <NUM> measures the air low according to one or more of the following measurement methods; supersonic measurement via Doppler effect, temperature measurement for measurement of the cooling of a heated wire and/or pressure measurement of changes of pressure over a known distance in a pipe.

According to yet another embodiment of the balancing system <NUM>, the ventilation system operation parameter is maximal air flow for lowest electric power [Watt] of a fan of the ventilation system.

According to further one embodiment of the balancing system <NUM>, the controller <NUM> of the balancing system is configured to communicate with a central control unit of the ventilation system.

According to additional embodiments of the balancing system <NUM>, the balancing system controller <NUM> is configured to communicate wirelessly with a central control unit, which is configured to communicate and adjust the permanent control components of the ventilation system according to the calculated damper setting values for each permanent control component. The communication may use Wi-Fi or any available telecommunication radio standard, e.g. <NUM>, <NUM> or <NUM>.

The controllers <NUM> and <NUM> may be implemented in digital electronically circuitry, or in computer hardware, firmware, software, or in combinations of them. Apparatus of the technique may be implemented in a computer program product tangibly embodied in a machine readable storage device for execution by a programmable processor; and method steps of the balancing process may be performed by a programmable processor executing a program of instructions to perform functions of the technique by operating on input data and generating output.

<FIG> is a block diagram schematically illustrating a ventilation system to be balanced according to the provided balancing method. The ventilation system <NUM> comprises an air conductor system <NUM> (within a dot-dashed line in <FIG>) of ventilation conduits <NUM> for conducting an air flow to a plurality of conduit inlets or outlets <NUM> via three conduit branches <NUM> for delivering air to different spaces, rooms or zones, S1, S2,. , Si (marked as dashed lined areas in <FIG>) of a building for heating, ventilation, cooling and/or air conditioning (HVAC), wherein i = <NUM>, <NUM>, <NUM>,. In the figures, only <NUM> spaces are illustrated, but the number of spaces may be both more or less than <NUM>. Some or all of the permanent control components (<NUM>, <NUM> in <FIG>) for manually setting of the air flow in the conduit branches <NUM> and/or conduit inlets or outlets <NUM> have been temporary replaced with portable, detachable adjustment components <NUM> for enabling balancing with the herein suggested balancing method. Adapters <NUM> in one end or both ends of the hollow body <NUM> are used for achieving airtight seals. The portable, detachable adjustment components <NUM> are configured to be temporary attached on the conduit inlets or outlets or in the air conduit of a separate branch <NUM> of the air conductor system <NUM> to allow adjustment of the damper setting values of the portable, detachable adjustment components <NUM> temporary controlling the air flow, and which adjustment of the damper setting values is transferred to the manual damper settings of the corresponding permanent control components replaced and attached again to the inlets or outlets. A balancing system controller <NUM> is therefore configured to perform the method by executing the steps of the following balancing method.

The advantage of the balancing method and the balancing system is that said system and method can be handled and operated by one single person, an operator. The balancing system controller <NUM> is therefore provided with a display <NUM> and a keyboard <NUM>. The operator starts an adjustment procedure by temporary replacing the permanent control components by detaching them and attaching adjustment components to one or more conduit branches and/or conduit inlet or outlet of the air conductor system <NUM> of which the damper settings are to be adjusted. This means that all or some of the permanent control components have to be temporary detached and replaced with the portable, detachable adjustment components. An operator may preferably replace the permanent control components which damper settings have to be adjusted with the adjustment components. The damper setting of a permanent control component is transferred as a starting damper setting for the corresponding adjustment component replacing the permanent control component.

When the adjustment components are attached to the air conduit system <NUM>, the operator actuates the switches of the adjustment components for powering the electric elements of the adjustment components. The adjustment components are also set in "on"-mode, i.e. they are activated for measurement and control. The ventilation system is also started by powering the electric fan <NUM>. The adjustment components start measuring the operation data, such as air flow, speed, temperature by means of the measurement block (<NUM> in <FIG>).

<FIG> is a flow chart of a method for wireless balancing a ventilation system. The object of the balancing method S100 is to wirelessly balance the damper settings of a ventilation system. The balancing method S100 is hereafter described with reference to <FIG>, <FIG> and <FIG>. The balancing system controller <NUM> is configured to control the balancing method S100 by means of the programmable processor and computer program software.

The balancing method S100 comprises an establishing phase or step: S110: - Establishing connection with the activated adjustment components.

The balancing system controller <NUM> establishes connection links for up and down transmission of messages, e.g. by using a handshaking process with each of the adjustment component controllers wherein each of the adjustment components are identified with its pre-defined ID or is given an ID by the balancing system controller. Said ID may be an IP-address or an ID-number. Any known wireless RF (Radio Frequency) technology such as Wi-Fi or any available telecommunication radio standard, e.g. <NUM>, <NUM> or <NUM> may be used for establishing up and down links connection and message transfer,.

The balancing system is then organized for measurement and the balancing system controller <NUM> is wirelessly connected to each active adjustment component <NUM> via the transceiver <NUM> of the balancing system controller <NUM> and the transceivers <NUM> of the adjustment components <NUM>. The active adjustment components <NUM> measures operation data when in "on"-mode and may either send the measured operation data on demand from the balancing system controller <NUM> or synchronized on an established sending schedule established during the establishing phase S110.

The balancing method S100 continues with following steps:
S120: - Receiving measured operation data from the active adjustment components.

The operation data is received via a suitable protocol that is addressed to and read by the programmable processor <NUM> of the balancing system controller <NUM>, which processor extracts the received operation data from each active adjustment component and stores them in a data storage connected to the processor <NUM>. The operation data is used by the programmable processor <NUM> for calculating new damper setting values, in the next step S120. S130: - Calculating by using the operation data a damper setting value of each of the active adjustment components that controls the air flow through the conduit inlets or outlets.

The programmable processor <NUM> comprises computer program software which enables the processor <NUM> to process the received operation data from all active adjustment components <NUM> and to calculate damper setting values, each value dedicated to each one of the active adjustment component <NUM> that controls the air flow through the conduit inlet or outlet <NUM> or the air conduit of a separate branch <NUM> instead of the permanent control components. The different damper setting values of the active adjustment components are calculated for achieving a ventilation system in balance. The programmable processor <NUM> is configured to address and distribute the new calculated damper setting values to the correct adjustment components, in accordance with the next step, S140. S140: - Adjusting by sending the calculated damper setting values to the active adjustment components.

When an adjustment component <NUM> receives its calculated damper setting value, the adjustment controller <NUM> uses the calculated damper setting value for controlling the electric motor or electric actuator <NUM> to set the damper <NUM> in the damper position corresponding to the calculated and received damper setting value. The new damper position will probably change the operation condition and operation data of the adjustment component. The adjustment controller <NUM> measures continuously the operation data of the adjustment component and sends the momentary operation data by means of the measuring component <NUM>. S150: - Receiving measured operation data based on the calculated damper setting values from the adjustment components.

The programmable processor <NUM> now uses the received measured operation data for testing and indicating on the display whether the ventilation system is in balance and the measured operation data fulfills specified conditions, or not, according to step S160. S160: - Is the ventilation system in balance?.

If the ventilation system is in balance, the condition "Balanced?" is fulfilled, "yes", and the balancing method could be finished, S180. However, if the ventilation system is not in balance, and the condition "Balanced?" is not fulfilled, "no", a new iteration of the balancing method is needed, wherein new damper setting values are calculated. The condition "Balanced?" is also considered as not fulfilled, "no", if the operation data do not fulfill specified conditions, and a new iteration of the balancing method is needed, wherein new damper setting values are calculated.

Situation may occur wherein the balancing system has a problem to be balanced and the iterations of calculating new damper setting values. To limit the number of iterations, an iteration counter and a maximum iteration sum check may be used, which counter is automatically set to null at the start of the balancing method. If a new iteration is started, the iteration sum is increased by adding "<NUM>". A maximum iteration sum check is performed before a new iteration is started. S170: - Maximum iteration sum is reached?.

If the condition "Max iteration" is not fulfilled, No, a new iteration is started by calculating new damper setting values in S130 and the iteration sum is increased by adding "<NUM>". If the condition "Max iteration" is not fulfilled, yes, the balancing method and the balancing system controller <NUM> is configured to request the operator for new damper settings, as follows:.

The iteration counter is automatically set to null before step S172 is performed as a sequence of iterations of the balancing method may be started.

When a damper setting value is changed such an amendment triggers changing of the operation data, which is measured by the adjustment components and sent to the system controller that performs step S120. Step S130 is repeated and a new iteration of the balancing method S100 is performed until the controller (<NUM> in <FIG>) of the balancing system (<NUM> in <FIG>) indicates that the system is in balance for the operator by means of the display. S180: - Indicating that the ventilation system is in balance and the permanent control components can be adjusted to the calculated damper setting values and reinstated.

Thus, if the ventilation system is in balance and the measured operation data fulfills specified ventilation system conditions set in a ventilation system specification, in that case, the permanent control components can be reinstated when adjusted according to the damper setting value indicated on the setting system controller displays. The operator then uses the damper setting values of the adjustment components and set the damper values of the permanent control components (<NUM>,<NUM> in <FIG>) and said portable, detachable adjustment components (<NUM> in <FIG> and <FIG>) are replaced with the permanent control components.

According to one embodiment of the balancing process, all permanent control components (<NUM>,<NUM> in <FIG>) of the ventilation system are replaced by portable, detachable adjustment components (<NUM> in <FIG> and <FIG>) from start. The portable, detachable adjustment components are replaced with the permanent control components one at the time, wherein the steps of the balancing method are performed until the ventilation system is in balance between each replacement of an adjustment component, which damper setting value is transferred to the corresponding, replacing permanent control component, until all detachable adjustment components have been replaced with the adjusted permanent control components of the ventilation system.

The method may advantageously be implemented in one or more computer programs that are executable on a programmable system including at least one programmable processor coupled to receive data and instructions from, and to transmit data and instructions to, a data storage system, at least one input device, and at least one output device. Each computer program may be implemented in a high-level procedural or object-oriented programming language, or in assembly or machine language if desired; and in any case, the language may be a compiled or interpreted language.

Generally, a processor such as the programmable processor <NUM> of the balancing system controller <NUM> will receive instructions and data from a read-only memory and/or a random access memory. Storage devices suitable for tangibly embodying computer program instructions and data include all forms of non-volatile memory, including by way of example semiconductor memory devices, such as EPROM (erasable programmable read only memory), EEPROM (electrically erasable programmable read only memory), and flash memory devices; magnetic disks such internal hard disks and removable disks; magneto-optical disks; and CD-ROM (Compact Disc Read-Only Memory) disks. Any of the foregoing may be supplemented by, or incorporated in, specially -designed ASICs (Application Specific Integrated Circuits).

Claim 1:
A balancing system (<NUM>) for wireless adjustment of the operation settings of a ventilation system (<NUM>) comprising an air conductor system (<NUM>) of ventilation conduits (<NUM>) for conducting air flow in one or more branches and a plurality of conduit inlets or outlets (<NUM>) and one or more permanent control components (<NUM>,<NUM>) for manual setting and control of the air flow in the conduit inlets or outlets and/or in the air conduit of one or more branches (<NUM>) of the air conductor system (<NUM>), the balancing system (<NUM>) comprising one or more portable, detachable adjustment components (<NUM>), which during the balancing of the ventilation system are attached on the conduit inlets or outlets and/or in the air conduits of the one or more branches (<NUM>) thereby temporary replacing the permanent control components (<NUM>,<NUM>) to allow adjustment of the manual damper settings controlling the air flow, and a system controller (<NUM>) for controlling said portable, detachable adjustment components, said balancing system controller (<NUM>) comprising a programmable processor (<NUM>), said balancing system controller (<NUM>) comprising a transceiver (<NUM>) configured to receive measured operation data from the active adjustment components, wherein the programmable processor (<NUM>) is configured to calculate by using the operation data a damper setting value of each of the active adjustment components that controls the air flow through the conduit inlets or outlets, and adjusting by sending via the transceiver the calculated damper setting values to the active adjustment components, receive via the transceiver (<NUM>) measured operation data based on the calculated damper setting values from the adjustment components, and to indicate via display (<NUM>) that the ventilation system is in balance and the permanent control components can be adjusted to the calculated damper setting values and reinstated, characterized in that the balancing system controller (<NUM>) is configured to request the operator via the display for new damper settings if the ventilation system is not in balance and/or the operation data do not fulfill specified conditions, receive at least one new damper setting value, and to send said at least one new damper setting value to one or more of the adjustment components.