FI13301Y1 - Control unit for an air mover device - Google Patents

Abstract

1. Control device for air transfer device comprising at least one sensor for measuring the property of the air flowing in the ventilation duct and a control unit which is arranged to produce a control command based on the sensor's measurements to control the air transfer device, characterized in that the control device (1) comprises a protective casing with a electronics chamber (5), in which at least one sensor and control unit can be arranged, and a coupling chamber (4) which can be arranged outside the ventilation duct and from which the control device (1) can be attached to the ventilation duct, and that the electronics chamber (5) can at least mainly be arranged inside the ventilation duct. In addition, the protection requirements 2-5.

Description

Air transfer device controller

Background of the invention

The invention relates to the control of an air transfer device and especially to the controller of the air transfer device.

Known solutions for controlling the exhaust air fan are presented in publications WO 2021/165575 A1 and WO 2020/152398 A1.

Brief description of the invention

The aim of the invention is therefore to develop a new type of air transfer device controller. The solution according to the invention is characterized by what is said in the independent protection requirements. Some embodiments of the invention are subject to independent protection claims.

In the presented solution, the controller of the air transfer device includes at least one sensor and a controller unit. At least one sensor in question is adapted to measure the property of the air flowing in the ventilation duct. The controller unit is adapted to produce a control command based on the sensor measurement to control the air transfer device. The controller also includes a protective case with an electronic chamber and a switching chamber. At least one sensor and control unit in question are fitted to the electronics chamber. The switching chamber can be adapted to the outside of the ventilation duct and the controller can be attached to the ventilation duct from the switching chamber. The electronics chamber is at least mostly adaptable to the inside of the ventilation duct. Such a controller is easy and simple to install in place in connection with the opening in the wall of the ventilation duct. The electronics chamber can be fitted to the inside of the duct through the opening in the duct wall. In this case, the parts and devices in the electronics chamber are in the ventilation duct

N 25 under conditions defined by air. So, for example, when external conditions

N teas are cold, it is warmer in the ventilation duct, and correspondingly, when the external conditions are warm, it is cooler in the ventilation duct. The parts and devices in the electronics chamber are therefore not easily exposed to conditions that are too cold or too = hot. 3 30 According to one embodiment, the electronic chamber is divided into

I to the backup chamber and the device chamber, whereby at least one sensor is at least partially

N taken to the measurement chamber. In this way, the sensor can be directly fitted to the place where

N measurement is performed.

According to one embodiment, the measuring chamber has an opening for conducting air from the ventilation duct to the measuring chamber to be measured with a sensor. In this way, the air to be measured is easily and simply introduced into the measuring chamber.

According to one embodiment, the measuring chamber has openings in its upper and lower part and on the sides, whereby in the direction of flow, the air flow of the ventilation duct can be led from the first and last opening into the measuring chamber and from the other openings out of the measuring chamber back to the ventilation duct.

In this way, the air to be measured can be easily and efficiently led to the sensor for measurement.

According to one embodiment, at least one sensor is fitted to the sensor circuit board. There is a partition between the device chamber and the measurement chamber, through which the sensor circuit board is fitted in such a way that the sensor part of the sensor circuit board is fitted to the measurement chamber and part of the circuit board is fitted to the device chamber. In this way, only the necessary part can be adapted to the measured air flow in a simple way.

Brief description of the patterns

The invention will now be explained in more detail in connection with some embodiments, referring to the accompanying drawings, of which:

Figure 1 schematically shows the controller of the air transfer device, viewed from the side;

Figure 2 schematically shows the controller according to Figure 1, viewed from the end on the side of the switching chamber;

Figure 3 schematically shows the controller according to Figure 1, viewed from the end towards the electronics chamber; and

Figure 4 schematically shows the controller according to Figure 1 from the side

W 25 viewed and in cross-section.

S

S Detailed description of the invention - The accompanying figures show the controller 1 of the air transfer device. The controller 2 includes at least one sensor and a controller unit. The sensor in question is adapted to measure the characteristics of the air flowing in the ventilation duct. The control unit is 3 30 adapted to produce a control command for the air handling equipment based on the measurement of the sensor

I do to guide.

N The quantity measured by the sensor can be one or more of the following: thermal

N state, humidity, carbon dioxide, VOC gas, air volume, smoke and dust. In addition, one or more other sensors can be connected to the controller, which can measure, for example, the pressure of the ventilation duct, the pressure of the outside air and/or the temperature of the outside air.

The controllable air transfer device can be, for example, an exhaust air fan and/or an intake air fan.

Limit values can be programmed into the control unit, based on which the amount of ventilation is adjusted. For example, when the exhaust air temperature drops below 20 °C, the control unit can be used to control, for example, the motors of the supply air fan and/or the exhaust air fan to operate at a lower power to reduce the amount of air exchange. If, on the other hand, the temperature of the exhaust air exceeds 23 *C, the control unit can be used to control the motors of the supply air fan and/or the exhaust air fan to operate at higher power to increase the amount of ventilation. If, on the other hand, the exhaust air temperature is between 20-23 °C, the motors' current power can be maintained. The same also applies to other measurable quantities. The control unit can also include an analysis application that is able to conclude the need to increase or decrease the ventilation based on two or more values measured by sensors and give the necessary control commands to the supply air fan and/or the exhaust air fan.

If desired, the ventilation can also be controlled in such a way that a basic level of ventilation is determined, from which the ventilation can be increased if necessary. Boosting can be implemented, for example, based on air quality measurement, temperature measurement and/or humidity measurement. Optimizing the ventilation can be — carried out in such a way that the ventilation is dimensioned to a level corresponding to the occupancy rate of the property.

The analysis application can also increase the safety of the building by identifying particles, smoke and/or fire in the exhaust air and gives a control command for adjusting the ventilation as needed. The control unit can forward information about a fire, for example, i.e. make a fire alarm to an external terminal.

N Controller 1 has a protective case on the outside. Directly presented by the figures

In the AN form, the protective case consists of the body of the protective case 2 and the cover of the protective case 3. The body of the protective case 2 and the cover of the protective case 3 can be formed in such a way that

A the cover 3 of the protective case can be clicked into place to the body 2 of the protective case 30.

E The protective housing has a switching chamber 4 and an electronics chamber 5. The controller < 1 is attached to the ventilation duct in such a way that the switching chamber 4 fits outside the ventilation duct. Controller 1 can be attached to the switching cam

From N to 4 ventilation ducts. Figures 1 and 4 show the ventilation duct

S 35 wall 6. The ventilation duct wall 6 has an opening through which the electronics chamber 5 is at least partially fitted to the inside of the ventilation duct.

The controller 1 can be attached to the ventilation duct with, for example, a sticker, glue, screw, rivet or some other suitable method of attachment. The body of the protective case 2 is formed in such a way that it has a narrower part that can be inserted through the opening of the wall 6 of the ventilation duct, and a wider part from which the guide 1 can be attached to the ventilation duct. The cover 3 of the protective case can be attached to the wider part of the body 2 of the protective case.

A connection box 7 can be fitted into the connection chamber 4. In the connection box 7, the connections of the cables of the controller 1, such as the voltage supply cable, the cable going to the air handling device and the cable going to the controller unit, can then be made. This junction box 7 can be tight, in which case the junction chamber 4 does not have to be at least as tight as the junction box 7.

The walls of the switching chamber 4 can have feed-through blanks 8. When you want to install a cable through the wall of the switching chamber 4, the feed-through blank 8 is opened, a feed-through connector 9 is installed in it, and the cable is installed through the feed-through connector 9.

There is a partition wall 10 between the switching chamber 4 and the electronics chamber 5.

The partition 10 can be attached to the frame of the protective case 2 with screws 11, for example.

The partition wall 10 can also have feed-through blanks. When a cable is to be installed through the partition 10, the feed-through blank is opened, a feed-through connector is installed in it, and the cable is installed through the feed-through connector.

The sensor and the control unit of the controller 1 are fitted into the electronic chamber 5. The electronic chamber 5 is divided by the partition wall 12 into the measuring chamber 13 and the device chamber 14. The circuit boards 15 that make up the controller unit are fitted into the device chamber 14. The circuit boards 15 can include memory, processors, data transfer units and other components that make up the control unit .

The circuit boards 15 are mounted in a rack 16. The rack 16 can be pre-

N as a sign of a thin sheet of metal bent into a U shape. Rack 16 can be

AN attaches to the partition walls 10 and 12 with nuts 17, for example.

A to the upper parts in such a way that the power source 18 connects the legs of U. This is how rack 16 can be stiffened in a simple way.

E Controller 1 can also be implemented in such a way that it works wirelessly. In this case, it is advantageous to also put the necessary batteries or batteries in the electronics chamber 3 5.

N The sensor circuit board 19 is still fitted to the rack 16. The sensor circuit board 19 is

S 35 — fitted through the partition 12 between the device chamber 14 and the measuring chamber 13. This way, at least, the sensor part 19a of the sensor circuit board 19 is fitted into the measurement chamber 13. Part of the sensor circuit board 19 is fitted into the device chamber 14.

The measuring chamber 13 has openings 20 in the body of the protective housing 2 for conducting air from the ventilation duct to the measuring chamber 13 to be measured by the sensor. 5 In Figure 3, arrows A illustrate the flow of air in the ventilation duct.

The air flow causes an overpressure outside the protective housing at the first and last opening 20 in the flow direction, i.e., in the case of figure 3, the lowest and uppermost opening 20. This allows air to flow into the measuring chamber 13 as illustrated by arrows B. At the central openings 20, the air flow causes a negative pressure outside the protective case. In this way, the air can flow out of the measuring chamber 13 and back into the ventilation duct in the manner illustrated by arrows C.

Filters 21 can be fitted to the openings 20 through which air flows from the ventilation duct to the measurement chamber 13 to filter the air to be measured.

It is obvious to a professional in the field that as technology develops, the basic idea of the invention can be implemented in many different ways. The invention and its embodiments are therefore not limited to the examples described above, but may vary within the scope of the protection requirements.

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Claims (5)

Protection requirements 1. An air transfer device controller, which includes at least one sensor for measuring the characteristics of the air flowing in the air exchange duct and a control unit adapted to produce a control command for controlling the air transfer device based on the measurement of the sensor, characterized in that the controller (1) includes a protective housing with an electronic chamber (5) , to which at least one sensor and controller unit can be fitted, and a switching chamber (4) which can be fitted to the outside of the ventilation duct and from which the controller (1) can be attached to the ventilation duct, and that the electronics chamber (5) can be fitted at least mainly to the inside of the ventilation duct. 2. Controller according to claim 1, characterized in that the electronics chamber (5) is divided into a measurement chamber (13) and a device chamber (14), whereby at least one sensor is at least partially fitted to the measurement chamber (13). 3. Controller according to protection claim 2, characterized in that the measuring chamber (13) has an opening (20) for conducting air from the ventilation duct to the measuring chamber (13) to be measured with a sensor. 4. A controller according to protection claim 3, characterized in that the measuring chamber (13) has openings (20) in its upper and lower part and on the sides, whereby the airflow from the ventilation channel can be led into the measuring chamber (13) from the first and last opening (20) in the flow direction and from other openings (20) out of the measuring chamber (13) back into the ventilation duct. 5. A controller according to one of the protection requirements 2-4, characterized in that at least one sensor is fitted to the sensor circuit board (19) and that between the device chamber (14) and the measurement chamber (13) there is a partition (12) through which the sensor circuit board N (19) is fitted so that the sensor part (19a) of the sensor circuit board (19) is fitted into the measurement chamber (13) and part of the sensor circuit board (19) is fitted into the device chamber + (14). 3 x a XY Å N >”