CH654647A5 - Entlueftungsanlage, especially for bath and toilettenraeume. - Google Patents

Description

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PATENT CLAIMS circuit is formed and the evaluation device a

1. System for central ventilation of rooms of an electrical or electronic evaluation circuit. Building, preferably bathrooms and toilets,

by means of an air conveying device, the speed of which is

is adjustable, the air delivery device (12) s

The invention relates to a system for the central removal of rooms (21) for extracting exhaust air, which is used to ventilate rooms, preferably bathrooms and toilets, which air outlets are adjustable air by means of actuators - Clear, according to the preamble of claim 1. have throttling devices (20) that are normally used in such systems, so far it has been customary for the air in predetermined first throttling positions for maintaining the conveying device to have a total of two speed levels, which maintain basic volume flows of the exhaust air and, alternatively, can be switched on and off for greater ventilation in second positions by means of a time switch. The lower speed was during the full or almost full open positions speaking about periods of use of the rooms in question, characterized in that the air throttle was switched on and the higher speed was a memory (25) for the user directions (20). is assigned, the periods of which these rooms are more powerful are determined in order to increase and decrease the starch content in predetermined steps to achieve no ventilation. Since the air throttle device can prevent the contents of the feed from being completely closed to the individual air throttling device when the second positions are switched on in their first positions, the low speed of the air feeder can be increased by one step and as a result of the switching on Device a minimum ventilation of the rooms concerned tens the first position of the individual air throttle device 20 safely.

can be lowered by one level and that the current

The evaluation device recognizing the content of the memory constantly runs at its highest speed, it sucks

(30-33) is provided which, depending on the given dependency, triggers considerably more exhaust air than triggers in the direction of its different speed levels even when all the air throttling devices are in their positions of switching the air conveying positions in the memory. 25 the low-usage periods, which during the heating

2. Plant according to claim 1, characterized in that periods of the building cause significant heat losses. The adjustment of the content of the memory (25) by one level of the energy consumption of the air conveying device is also constantly high in the periods of time programmed to be used in relation to the time when the relevant heavy-duty program is switched. Air throttle device (20) from one position to the other Furthermore, it can be delayed in the low-use programmed time position and that the adjustment of the space occur, that for whatever reason the content of the memory is not used whenever the kernel is not used Broaching takes place and the air throttle device in question is already in the then the basic ventilation is no longer sufficient. Position is switched before the adjustment of the It is therefore an object of the invention, the venting memory content has taken place. of the building rooms, whose exhaust outlets to the air conveying

3. System according to claim 1 or 2, characterized in that the device is connected, by simple and cost-effective, that each speed level lying above the lowest speed level of the economically feasible measures to be removed from the air-conveying device ventilates content.

difference of memory comprises at least two levels. The system according to the invention results in needs-based

4. System according to one of the preceding claims, ventilation of the relevant rooms of the building, in which it is characterized in that the lowest speed level 40 can preferably be bathrooms and / or toilets and, if appropriate, the air conveying device, a difference in content of the other wet rooms . As a result, chers are comprised of at least two stages. considerable energy savings compared to the previous

5. System according to one of the preceding claims, previously achieved in practice achieved systems, characterized in that at each Luftdrosselvorrich- Also in the characterizing part of the device (20) listed one of the gradual change in the content of claim 45 Simple and cost-effective measures

Storage (25) serving limit switch (22) is arranged, which can be implemented cheaply, this system according to the invention preferably only being switched on when the air throttle does not have to be connected to a timer.

Device has almost reached its second position and only the memory can preferably be an electrical or electrical

in the wake of switching the air throttle device to tronic storage circuit. However, others are turning their first position off again. so training possible. The evaluation device can also

6. System according to claim 5, characterized in that preferably an electrical or electronic evaluation-the limit switch (22) be a microswitch with switching hysteresis circuit.

is. The current content of the memory corresponds to that

7. Plant according to one of the preceding claims, number of rooms to be strongly ventilated. The evaluation is characterized in that the air conveying device (12) can be switched, which preferably also triggers the speed adjustment directly via a control device, if necessary against at least three different speed levels. can be particularly expediently designed such that

". ,,,,. * * .. v. at least every one above the lowest speed level

8 system according to one of the preceding claims speed level of the air conveying device a content difference

characterized in that the highest speed level of the ^ fenz deg s iers comprises at least two levels,

Air handling device (12) a content difference of the storage, which includes the number of the required speed levels of the diers, which is greater than that of the lower air conveying device or devices, considerably smaller than the number of

Content difference or difference assigned to speed levels. ° ..r. ,. . A

- ö rooms to be ventilated by this system. According to a preferred development, rpti7pti can also serve the same purpose

9. Plant according to one of the preceding claims, 65 of the invention that the lowest speed

characterized in that the memory is an electrical stage of the air conveying device, a content difference of the or electronic memory, preferably comprises one to one memory of at least two stages, of which the other parallel branches of an electrical lowest stage occurs when all air conveying devices in

3rd

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their first positions are switched, since the lowest speed of the air conveying device in many cases is still sufficient to vent at least one room, preferably one or two rooms. To reduce the speed levels, it can also be advantageously provided that the highest speed level of the air conveying device comprises a content difference in the memory that is greater than the content difference or differences associated with the lower speed level or levels. In fact, it is very rare, at least for a large number of rooms, that all rooms are used at the same time, so that with the rare use of all rooms at the same time, one can accept a slightly lower air discharge from these rooms.

It is often sufficient if the air delivery device can only be set to two different speeds, especially if the number of rooms to be ventilated is small. In larger buildings, in which the number of rooms to be ventilated is relatively large, it is expedient to provide that the air delivery device can be set to more than two speed levels, preferably to at least four speed levels. For example, if each speed level includes a difference in the contents of the memory of two levels, 8 rooms are vented. If one assigns even greater storage content differences to all or individual speed levels, correspondingly more building spaces can be connected to the air conveying device.

The setting of the different speed levels of the air delivery device can be carried out by known measures. The electric drive motor of the air conveying device can preferably be an asynchronous motor, which can be fed with a different supply voltage in order to adjust its speed by means of a step transformer. Or the electric drive motor can be a pole-changing motor, etc.

In a preferred embodiment, it is provided that the memory on the air conveying devices has detachers, preferably microswitches with switching hysteresis, the closed state of the individual microswitch increasing the memory content by one step. These limit switches can be switched on and off directly by throttling elements of the air conveying device or by their actuator.

The air throttle devices and their actuators can be designed in a known manner. The air throttle devices can preferably be Venetian blind flaps, with a stop or in some other way causing the Venetian blind to not be completely closed.

The actuator of the air throttle device can be of a conventional type, preferably have heated bimetal for adjusting the throttle element or elements, the heating winding of which is normally switched off and is switched on to transfer the air throttle device into its second position. In particular in windowless rooms, the first and second positions of the air throttle device can be switched on by the light switch of this room. In the case of toilet rooms, the rotary latch of the entrance doors can be coupled to a switch that switches the first and second positions, or other, preferably manually operated switches can be provided for switching on the first and second positions.

If a limit switch with switching hysteresis is arranged on the air conveying device, the throttle positions of the air throttle device differ in which the limit switch is switched on and off, which results in a corresponding time delay after switching off the air throttle device to the first position. This time delay can preferably be several minutes due to the corresponding slow adjustment of its throttle element or throttle elements, which is desirable at least in toilet rooms.

s In the drawing, an embodiment of the invention is shown.

The single figure shows a longitudinal section through a vertical building shaft 10, in which a duct system 11 serving to vent four rooms 21 is installed, to the output of which a roof fan is connected as an air conveying device 12 for the exhaust air, the electric drive motor 13 of which has four different speed levels can be switched by means of a control device 34 which adjusts its supply voltages. In the drawing, an exemplary embodiment of an electrical circuit serving to adjust the speed of this air conveying device 12 is also shown.

The duct system 11 has a vertical main duct 16, in which one injector 20 17 is arranged on each floor of the building, of which one branch duct 19 leads to an exhaust air outlet 18 of a building space 21, which is to be vented through this ventilation system, and in which it can preferably be a bathroom and toilet room. In the system shown, the total exhaust air is exhaust air 25.

Each exhaust air outlet 18 has an air throttle device 20 which can be adjusted between a first and a second position by an actuator (not shown), the first position of which strongly restricts the exhaust air and the second position of which corresponds to its full open position.

On each air throttle device 20 is a limit switch 22 designed as a microswitch, which are shown for a better overview at a distance from the air throttle devices 20, although they are installed in the frame of the 35 air throttle device 20 and here preferably by the adjusting the slats of the air throttle device be operated. The actuating lever can be actuated in a manner known per se, preferably by a heated bimetal or, if appropriate, also by another, preferably slow, actuating motor. The heating winding of the bimetal is switched on and off by means of an associated switch which is switched on when the relevant room 21 is used and is switched off again when the room is left.

45 In this exemplary embodiment, an electrical storage circuit 25 assigned to the air throttle devices 20 has the microswitches 22 in series, each with a resistor 27 in current branches connected in parallel, which are interposed in a circuit 35 which is fed by such a direct voltage source 26. Furthermore, there is another current branch connected in parallel, which contains a resistor 27 ', but no switch. The resistors 27 and 27 'can expediently be the same size.

55 In the feed line 28 to this memory circuit 25, a chain of four relays 30-33 is connected in series as an evaluation circuit for the memory circuit 25, the switch contacts 30 'to 33' of which are connected to the control device 34, which are by means of the relay contacts 30 'to 60 33 'controlled switching means can alternatively switch on a total of four speed stages of the air conveying device 12 by alternatively applying the four different output voltages of a stage transformer 14 to the motor 13 as a supply voltage.

65 If only the relay contact 30 'of the first relay 30 is closed, the lowest speed of the air conveying device 12 is switched on. If the relay contact 31 'of the second relay 31 is additionally closed, the second rotary

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Payment level of the air delivery device 12 turned on. When the third speed stage is switched on when only two of the relay contacts 32 'of the third relay 32 are closed, the microswitch 22 is closed and the second rotary switch is closed.

the third speed level of the air conveying device and if the number level is switched as soon as only a micro

the relay contact 33 'of the fourth relay 33 is closed, switch 22 is closed and the lowest speed level is the fourth speed level, i.e. the highest speed of the air is switched on when all the microswitches 22

conveyor 12 turned on. are open. In this case, therefore, include

As long as the on-off switch 36 of the circuit 35, a first to third speed stage each has a content difference that is switched, the resistor 27 'is always current through memory circuit 25 of one stage, whereas the fourth flow. The starting current, when reached the first speed level, a difference in content of the memory circuit

Relay 30 comprises two stages by closing its relay contact 30 'io. The different sizes respond is made so that this relay contact 30 'always pick-up currents of the relays 31 to 33, can also be closed differently as long as the main switch 36 is hit turned on. For example, it can be provided that it is so. When the main switch 36 is switched on, it is necessary to provide that the first speed level is also at one

Air delivery device 12 remains at least with its lowest closed microswitch, and

Speed, that is, at least in the first speed level, the switch to the higher speed levels is switched on, but can be closed by closing the microswitches by closing two, three and four microswitches 22.

22 can be switched to the higher speed levels. To find. In this case, therefore, the first speed level comprises for this purpose the pull-in currents, to which the relays 31, 32 respond a content difference of the memory circuit 25 of two and 33, of different sizes, such that the levels and the other speed levels have a content difference second relay contact 31 '. is only closed as long as 20 of each level.

at least one of the four microswitches 22 is closed. He each microswitch 22 increases when it is closed

When additional micro switches 22 are switched on, the current flowing through the current flowing through the relays 30 to 33 remains closed, but is opened again as soon as all the micro-formed instantaneous contents of the memory circuit 25 um

Switches 22 are open. The relay contact 32 of the third one level and lowers it one level when it returns

Relay 32 is only closed as long as at least two 25 are opened.

Microswitches 22 are closed and the relay contact 33 '. In the system shown, the adjustment of the fourth relay 33 is only closed as long as the min content of the memory circuit 25 is closed by one stage relative to the three microswitches 22. As a result, the time at which the relevant air throttle device is switched over

the first, lowest speed level is set as long as no direction 20 from one position to the other position

Microswitch 22 is closed, so none of the rooms 21 30 hesitates, the content that is used is not adjusted. If a single space 21 is used, then a storage circuit 25 is always switched on when the respective one of the four microswitches 22 is closed and thereby air throttle device 20 already switches back to the one position, the second speed stage of the air delivery device 12 is switched over before the adjustment of the storage

switched on. If two rooms 21 are used and therefore stop, i.e. the opening or closing of the relevant two microswitches 22 are closed, 35 microswitch 22 has taken place.

The third speed stage is switched on and if three when the main switch 36 is open, the relay or all four of these spaces 21 are used and accordingly three contacts 30 are closed by opening the air supply device or all four microswitches 22 are closed, the direction 12 is triggered, so that no additional switch fourth speed level switched on. Accordingly, again is required.

B

1 sheet of drawings