EP2458571B1 - Electric installation device with a display for room air quality - Google Patents

Description

The invention relates to an electrical installation device with a display for the indoor air quality.

From the DE 103 01 773 A1 an electrical installation device is known which is provided with a carbon monoxide status display. The carbon monoxide status display is designed as a coating field with a chemical sensor material which indicates the presence of carbon monoxide by changing colors. The carbon monoxide status display can be integrated in the rocker switch of a switching device. It is equally possible to have the carbon monoxide status indicator in a frame part or frame or cover frame or in a cover, central pane, in a hinged cover or in a blind cover of an electrical installation device - such as switches, buttons, dimmers, sockets, timers, room temperature controllers, Provide data communication device such as telephone socket, radio / TV socket at any position.

From the US 2007/290870 A1 a CO detector that can be installed in a flush-mounted socket or integrated in a flush-mounted socket is known. XP 055567306, a product catalog from Gira, discloses a CO2 sensor with a visual display.

The invention has for its object to provide an optimized electrical installation device with a display for the indoor air quality.

This object is achieved according to the invention by an electrical installation device with a display for the indoor air quality, according to claim 1.

The advantages that can be achieved with the invention are, in particular, that a stand-alone installation device is proposed which can be very easily integrated into an installation device program and a statement about the current indoor air quality that is clearly and clearly recognizable both during the day and during the night displays. Accordingly, the user can take measures to improve the indoor air quality, for example opening the window or switching on a fan. According to an optional embodiment, the installation device itself has a switching element for switching such a fan on and off. According to a further optional embodiment, the installation device itself automatically switches the fan on as soon as the indoor air quality requires it.

If the optional combination with a switching element is selected for the installation device, a simple replacement (replacement) of an existing light switch by the installation device according to the invention is possible, as a result of which both the function of the light switch and the function of the indoor air quality indicator are fulfilled by a single device. Additional installation work, such as installing an additional flush-mounted device box and installing additional electrical cables, is not necessary.

The electrical installation device can be combined with any components of a conventional installation device program for sockets / switches / buttons / dimmers, and a conventional cover frame from this conventional installation device program is used. Conventional installation device programs mean programs such as those sold by numerous installation device manufacturers and various rocker switch inserts, rocker switch inserts, dimmer inserts, socket inserts as well as rockers and cover frames 1-gang, 2-gang, 3-gang, 4-gang in certain designs and include certain colors.

Likewise, a simplified embodiment can be implemented in which the central sensor part and cover frame form a (one-piece) unit.

Appropriate embodiments of the invention are characterized in the subclaims.

Fig. 1

eine Sicht auf ein Installationsgerät,

Fig. 2

eine Seitenansicht eines Zentral-Sensorteils,

Fig. 3

einen Schnitt durch ein montiertes Installationsgerät,

Fig. 4

eine perspektivische Ansicht auf ein Zentral-Sensorteil,

Fig. 5

eine perspektivische Ansicht auf Abdeckrahmen und Zentral-Sensorteil,

Fig. 6

eine Basis-Ausführungsform des Installationsgerätes,

Fig. 7

eine Ausführungsform des Installationsgerätes mit einem zusätzlichen Schaltelement,

Fig. 8

eine Ausführungsform des Installationsgerätes mit zwei zusätzlichen Schaltelementen und zwei Lastschaltgliedern,

Fig. 9

eine Ausführungsform mit zwei Lastschaltgliedern und einem Schaltelement,

Fig. 10

eine bezüglich der Gas-Sensorik optimierte Ausführungsform des Installationsgerätes.

The invention is illustrated below with reference to the embodiments shown in the drawing. Show it:

Fig. 1

a view of an installation device,

Fig. 2

a side view of a central sensor part,

Fig. 3

a section through an installed installation device,

Fig. 4

a perspective view of a central sensor part,

Fig. 5

a perspective view of the cover frame and central sensor part,

Fig. 6

a basic embodiment of the installation device,

Fig. 7

one embodiment of the installation device with an additional switching element,

Fig. 8

one embodiment of the installation device with two additional switching elements and two load switching elements,

Fig. 9

an embodiment with two load switching elements and a switching element,

Fig. 10

an embodiment of the installation device which is optimized with respect to the gas sensor system.

In Fig. 1 a view of an installation device 1 is shown. A central sensor part 13 can be seen, which has a central color display light indicator 16. The central sensor part 13 can optionally be provided with a touch surface 14 for switching on / off at least one electrical consumer. The central sensor part 13 is framed by a cover frame 25 of a conventional installation device program.

In Fig. 2 a side view of a central sensor part is shown. A contact 22 arranged on the rear of the central sensor part 13 can be seen, which for engagement in a corresponding contact of a flush-mounted device insert 3 (flush-mounted insert, see Fig. 3 ) serves. Furthermore, a plurality of fastening elements 23 are arranged on the back of the central sensor part 13, which serve to engage in corresponding recesses in the flush-mounted device insert 3, as a result of which the central sensor part 13 including the cover frame 25 is mechanically fixed to the flush-mounted device insert 3.

In Fig. 3 is a section through an installed installation device. It is possible to see a standard flush-mounted device box 27 mounted in a wall 28, in which the flush-mounted device insert 3 of the installation device 1 is installed, preferably in a conventional manner by means of spreaders supported on the side wall of the flush-mounted device box 27 or by means of screws, which through recesses in the support ring of the flush-mounted device insert in pockets of the concealed device box 27 grab. The installation device 1 is completed by the cover frame 25.

In Fig. 4 a perspective view of a central sensor part 13 is shown. The front-mounted color display light indicator 16, the front-accessible button 14 for switching on / off at least one electrical consumer, part of the rear-mounted fastening elements 23, the rear-side contact 22 and top and bottom ventilation slots 24 can be seen, through which Room air can flow.

In Fig. 5 is a perspective view of the cover frame and central sensor part is shown. The spatial assignment of the central sensor part 13 to the cover frame 25 is shown by an arrow. In the case of the central sensor part 13, the touch area 14, color display light indicator 16, ventilation slots 24 and one of the fastening elements 23 are designated.

• durch Aufleuchten des grünen Bereichs wird angezeigt, dass die Raumluftgüte in Ordnung ist,
• durch Aufleuchten des gelben Bereichs wird angezeigt, dass sich die Raumluftgüte verschlechtert hat,
• durch Aufleuchten des roten Bereichs wird angezeigt, dass die Raumluft durch Lüften verbessert werden sollte.

In Fig. 6 a basic embodiment of the installation device 1 is shown schematically. On the one hand, it is shown that the flush-mounted device insert 3 has a power supply unit 5, which is connected with its primary connection to an AC voltage network 22 via a network connection 4. On the other hand, it can be seen that the central sensor part 13 is connected via the contact 22 to the secondary connection of the power supply 5, as a result of which the color display light indicator 16 and a control unit 15 are supplied with energy. The color display light display 16 shows the detected indoor air quality in the form of a preferably three-color display:

• the green area lights up to indicate that the indoor air quality is OK,
• the yellow area lights up to indicate that the indoor air quality has deteriorated,
• the red area lights up to indicate that the room air should be improved by ventilation.

In a simplified embodiment, e.g. B. by lighting up the green or red area, the quality of the indoor air quality is displayed.

In the simplest embodiment, only a single area is provided for the corresponding signaling, i. H. e.g. B. when the red area is displayed, it is signaled that the room air should be improved by ventilation. If the quality of the indoor air is OK, there is no signaling.

• in Form einer aus LEDs grün / gelb / rot in Form einer Luftgüteampel aufgebaut sein oder
• in Form einer flächigen Anzeige aus LCD und LED-Hinterleuchtung aufgebaut sein oder
• auf Basis einer OLED-Anzeige aufgebaut sein, die entweder eine LCD-Anzeige farbig hinterleuchtet oder die Information (Raumluftgüte) in Farbe und Text anzeigt.

The color display light display 16 can alternatively

• in the form of a green / yellow / red LED in the form of an air quality light or
• be constructed in the form of a flat display from LCD and LED backlighting or
• be built on the basis of an OLED display, which either back-lights an LCD display in color or displays the information (indoor air quality) in color and text.

The control unit 15 is connected to a room air quality sensor 17 which detects CO2 and / or various other gases - such as certain odor gases and outgassing (from furniture, carpets) - and calculates a CO2-equivalent signal from the measured gases and their quantities. The control unit 15 acts on the color display light indicator 16 as a function of the measurement result detected by the indoor air quality sensor 17.

• die Farbdisplay-Leuchtanzeige 16 beispielsweise im Bereich bis 1000 ppm CO2 grün aufleuchtet,
• die Farbdisplay-Leuchtanzeige 16 beispielsweise im Bereich zwischen 1000 ppm CO2 und 2000 ppm CO2 gelb aufleuchtet,
• die Farbdisplay-Leuchtanzeige 16 beispielsweise im Bereich über 2000 ppm CO2 rot aufleuchtet.

The control unit 15 consists in detail of a sensor signal evaluation unit 35, which receives the signal of the indoor air quality sensor 17 and supplies it in an evaluated form to a threshold value logic 37. The threshold value logic 37 converts the evaluated signal into a signal suitable for the color display light display 16 and feeds it to a color display control unit 38 which, in a corresponding manner, effects the power control of the color display light display 16, so that, for example

• the color display light indicator 16, for example, lights up green in the range up to 1000 ppm CO2,
• the color display light indicator 16 lights up yellow, for example in the range between 1000 ppm CO2 and 2000 ppm CO2,
• the color display light indicator 16 lights up red, for example, in the range above 2000 ppm CO2.

The basic version enables the user to take appropriate measures - such as opening a window or switching on a fan - as soon as a non-optimal indoor air quality is displayed.

In Fig. 7 an optional embodiment of the installation device 1 is shown schematically with an additional switching element. In addition to the embodiment according to Fig. 6 the flush-mounted device insert 3 has a load switching element 6, such as a relay, triac, transistor, which is connected via a switching output 7 to an electrical consumer 30, in particular room lighting. The load switching element 6 is also connected to the secondary connection of the power supply 5. The control input of the load switching element 6 is connected via the contact 22 to a switching element 20, in particular a pushbutton, which on the other hand is connected to the secondary connection of the power supply 5. The switching element 20 is actuated by actuating / touching / pressing the above-mentioned button 14 for switching on / off at least one electrical consumer. The advantage of this embodiment can be seen in the fact that with a single installation device 1, both the room lighting can be switched and the room air quality is displayed. An existing light switch can be replaced by the installation device according to the invention, which takes over the function of switching the room lighting on / off.

In Fig. 8 an optional embodiment of the installation device 1 with two additional switching elements is shown schematically. In addition to the embodiment according to Fig. 7 the flush-mounted device insert 3 has a further load switching element 8, such as a relay, triac, transistor, which is connected via a switching output 9 to an electrical load 31, in particular a fan. The load switching element 8 is also connected to the secondary connection of the power supply 5. The control input of the load switching element 8 is connected via the contact 22 to a switching element 21, in particular a button, which on the other hand is connected to the secondary connection of the Power supply 5 lies. The switching element 21 is actuated by actuating / touching / pressing the above-mentioned button 14 for switching on / off at least one electrical consumer. This embodiment enables the display of the indoor air quality and, in addition to the switching of the room lighting, the direct manual switching on of a fan by the user, in order to improve the indoor air quality if necessary.

In Fig. 8 is indicated by dashed lines that the control unit 15 can also act directly on the load switching element 8 (without actuating the switching element 21) in order to quasi automatically switch on the fan (electrical consumer 31) if the detected, non-optimal indoor air quality requires this. In such an embodiment, the switching element 21 can also be omitted, which is shown in FIG Fig. 9 is shown.

In Fig. 10 an embodiment of the installation device which is optimized with respect to the gas sensor system is shown schematically. In this embodiment, the control unit 15 is connected to a room air quality sensor 17, a humidity sensor 18 and a temperature sensor 19. Furthermore, an air pressure sensor can also be provided. The control unit 15 consists in detail of sensor signal evaluation units 35 for the indoor air quality sensor 17, the humidity sensor 18, the temperature sensor 19 and possibly the air pressure sensor, which receive the signals or the detected measurement results of the individual sensors and evaluate them Form a sensor signal link unit 36, which links these signals together and feeds the determined link value to the threshold logic 37. The threshold value logic 37 converts the evaluated and linked signal into a signal suitable for the color display light display 16 and feeds it to the color display control unit 38, which correspondingly effects the power control of the color display light display 16, as under Fig. 6 explained.

Of course, at Fig. 10 In the embodiment discussed, one or two switching elements can also be provided in the central sensor part 13 in order to be able to control one or two different electrical consumers, such as room lighting and fan, directly (manually or automatically), such as this among the embodiments according to the Figures 7-9 is explained. The corresponding embodiment of the flush-mounted device insert 3 can in turn alternatively, as under the Figures 6 - 9 shown, depending on the desired embodiment, be designed without any power switching element or with one power switching element or with two power switching elements 6, 8.

Reference list

1

Installation device

2nd

-

3rd

Flush-mounted device insert (concealed insert)

4th

Mains connection

5

power adapter

6

Load switching element (relay, triac, transistor)

7

Switching output

8th

Load switching element (relay, triac, transistor)

9

Switching output

10th

-

11

-

12th

-

13

Central sensor part

14

Touch button for switching on / off at least one electrical consumer

15

Control unit

16

Color display light display

17th

Indoor air quality sensor, gas sensor, especially CO2 sensor

18th

Humidity sensor

19th

Temperature sensor

20th

Switching element (button)

21

Switching element (button)

22

Contacting

23

Fastener

24th

Ventilation slots

25th

Cover frame

26

-

27

UP device box

28

wall

29

-

30th

electrical consumers, especially room lighting

31

electrical consumer, especially fan

32

AC network

33

-

34

-

35

Sensor signal evaluation unit

36

Sensor signal linking unit

37

Threshold logic

38

Color display control unit

Claims (4)

1. Electrical wiring accessory (1) having an indicator for the ambient air quality,

   • having a flush-mounted accessory frame (3), a central sensor part (13) and a covering frame (25),

   • wherein the flush-mounted accessory frame (3) has a power supply unit (5) whose primary side is connectable via a supply connection (4) to an AC power supply (32) and whose secondary side is connectable via a contact-connection (22) to the central sensor part (13),

   • wherein the central sensor part (13) has ventilation slots (24) for a through-flow of ambient air,

   • wherein the central sensor part (13) has a CO2-determining ambient air quality sensor (17), a colour-display light-emitting indicator (16) and a control unit (15) actuating the latter, and these structural components are powerable by the power supply unit (5) via the contact-connection (22),

   • wherein the ambient air quality sensor (17) detects not only CO2 but also odorous gases and instances of outgassing and calculates a CO2-equivalent signal from the measured gases and the volumes thereof.

   • wherein the control unit (15) evaluates the sensor signal of the ambient air quality sensor (17) by means of a sensor signal evaluation unit (35) and actuates the colour-display light-emitting indicator (16) on the basis of the result of this evaluation using a threshold value logic unit (37) and by means of a colour-display actuating unit (38),

   • wherein the central sensor part (13) has a touch area (14) that applies pressure to a switching element (20) connectable via the contact-connection (22) to a load switching element (6), arranged in the flush-mounted accessory frame (3), that uses a switching output (7) to switch an electrical load (30), a room illumination, on/off, and

   • the touch area (14) of the central sensor part (13) applies pressure to a further switching element (21), which is connectable via the contact-connection (22) to a further load switching element (8), arranged in the flush-mounted accessory frame (3), that uses a further switching output (9) to switch a further electrical load (31), a fan, on/off.
2. Electrical wiring accessory (1) according to Claim 1, characterized in that the control unit (15) takes the result of the evaluation of the sensor signal of the ambient air quality sensor (17) as a basis for using the contact-connection (22) to actuate a load switching element (8), arranged in the flush-mounted accessory frame (3), that uses the switching output (9) to switch an electrical load (31), in particular a fan, on/off.
3. Electrical wiring accessory (1) according to Claim 1 or 2, characterized in that the central sensor part (13) has not only the ambient air quality sensor (17) but also a moisture sensor (18) and/or a temperature sensor (19) and/or an air pressure sensor, and the control unit (15) combines the signals thereof by means of a sensor signal combining unit (36) .
4. Electrical wiring accessory (1) according to one of the preceding claims, characterized in that the central sensor part (13) and the covering frame (25) form a unit.

Images