CN111023190A - Central flue system and floor coding method - Google Patents

Abstract

A central flue system comprises range hoods installed on different floors, an air outlet of each range hood is communicated with a common flue through a smoke pipe, a check valve is installed in each smoke pipe, a flue fan is installed in the common flue, the flue fan is provided with a first communication module capable of transmitting debugging signals, and the check valve is provided with a second communication module capable of receiving the debugging signals and transmitting corresponding feedback signals to the first communication module. The invention also discloses a floor coding method of the central flue system. The central flue system utilizes the characteristic that wireless signals are attenuated along with the increase of floors, the statistical sequencing calculation signal-to-noise ratio serves as the basis for judging floors, the valve body can be matched with floors in a self-adaptive mode, the floor coding distribution network does not need to be carried out manually during installation, if a single valve body is operated after being replaced during service maintenance and replacement of a user side valve, missing addresses are automatically added, if multiple machines are replaced simultaneously, the scheme can be executed according to the missing floors, and floors are automatically detected and distributed.

Description

Central flue system and floor coding method

Technical Field

The invention relates to a central flue system, in particular to a central flue system and a floor coding method.

Background

At present, floors of newly-built floors in cities are generally higher and higher, and the outlet of a high-rise common flue is generally arranged at the top of the floors, so that the outlet resistance of a system can be influenced by the switching condition of a range hood of each user, and the smoke exhaust condition of users at the bottom is severe. However, the cross-sectional area of the common flue is generally predefined by building design specifications and cannot be replaced, and if the area of the flue channel cannot be increased, the air volume is increased at once, which may cause flue blockage and increase the flow rate and noise of the whole flue system.

In addition, the user side angle-adjustable valve is combined with a roof flue outlet main fan to intensively filter and discharge, and the air conditioner is applied to certain finish-finished buildings in recent years, the roof main fan carries out frequency conversion and valve plate preset angle to realize flow distribution aiming at different on-time users, the problem of bad smoke discharge of bottom users can be solved to a certain extent, and meanwhile, the flow rate and the noise of the whole flue system are effectively controlled; however, the regulating valve in the mode needs to be manually bound with the floor in advance, the installation workload is very large, floor information needs to be bound again after the user changes the valve, the intelligent degree is low, the regulating error is easy to occur, and once the error occurs, the regulating valve is not easy to find, and the regulating valve is not convenient to overhaul.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a central flue system with a simple structure and capable of implementing adaptive floor coding, in view of the above-mentioned current state of the art.

The second technical problem to be solved by the present invention is to provide a floor coding method for a distribution network, which can make a check valve self-adaptively match floors without manual floor coding, in view of the above limitations of the prior art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: this central flue system, including installing the range hood at different floors, the air outlet of every range hood all is linked together through respective tobacco pipe and public flue, all installs the check valve in every tobacco pipe install flue fan, its characterized in that in the public flue: the flue fan is provided with a first communication module capable of transmitting debugging signals, and the check valve is provided with a second communication module capable of receiving the debugging signals and transmitting corresponding feedback signals to the first communication module.

In order to avoid the phenomenon that the wireless signals are attenuated too fast along with floors, the first communication module and the second communication module both adopt low-power-consumption wide area network transmission modules such as LoRa or NB-loT.

In order to purify the oil fume flowing into the common flue, a centralized filtering device is arranged in the common flue, and the centralized filtering device is positioned at the front end of the flue fan.

In order to drive the valve plate to rotate, a valve plate control motor used for adjusting the opening angle of the check valve is installed on the smoke pipe.

In order to prevent the oil smoke in the common flue from flowing backwards, a fire damper is arranged at the outlet end of the smoke tube, and the air outlet of the range hood is communicated with the common flue through the smoke tube and the fire damper.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the floor coding method is characterized by comprising the following steps:

①, starting the system;

②, broadcasting a signal adjusted to a certain angle or a debugging signal needing to be fed back to the check valve by a first communication module of the flue fan with certain transmitting power;

③, the second communication module of the check valve of each floor receives the signal from step ② to execute the action and feeds back the signal with the same transmission power;

④, judging whether all check valve signals are received by the flue fan, if so, calculating the signal-to-noise ratio of all check valve signals, if not, increasing the transmitting power of the first communication module, judging whether the new transmitting power exceeds a threshold value, if so, reporting a fault, and if not, continuing to the step ②;

⑤, sorting the address codes of the check valves according to the signal-to-noise ratio from small to large;

⑥, binding the check valve with the address code according to the sequence of the signal-to-noise ratio from low to high.

Compared with the prior art, the invention has the advantages that: the flue fan of the central flue system is provided with a first communication module capable of transmitting debugging signals, the check valve is provided with a second communication module capable of receiving the debugging signals and transmitting corresponding feedback signals to the first communication module, the characteristic that wireless signals are attenuated along with floors is utilized, the signal-to-noise ratio is counted, sequenced and calculated to serve as the basis for floor judgment, the valve body can be matched with floors in a self-adaptive mode, the floor coding distribution network does not need to be carried out manually during installation, in addition, if a single valve body is operated after being replaced during service maintenance and user side valve replacement, missing addresses are automatically added, if multiple valves are replaced simultaneously, the scheme can be executed aiming at the missing floors again, and floors are automatically detected and distributed.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a sectional view of a side-suction range hood according to an embodiment of the present invention;

fig. 3 is a flowchart of a floor coding method according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 and fig. 2, the central flue system in this embodiment includes range hoods 1 installed on different floors, an air outlet of each range hood 1 is communicated with a common flue 7 through a respective smoke tube 2, and an air outlet of the smoke tube 2 is installed with a fire damper 10. A check valve 3 is arranged in each smoke pipe 2, and a valve plate control motor 9 for adjusting the opening angle of the check valve 3 is arranged on each smoke pipe 2. A flue fan 4 and a centralized filtering device 8 are arranged in the common flue 7, the flue fan 4 is a booster fan, and the centralized filtering device 8 is arranged at the front end of the flue fan 4 and close to an air inlet of the flue fan 4.

In this embodiment, the flue fan in the common flue 7 has a first communication module 5, the first communication module 5 can transmit a debugging signal, the check valve 3 on the user-side range hood 1 has a second communication module 6, and the second communication module 6 can receive the debugging signal sent by the first communication module 5 and transmit a corresponding feedback signal to the first communication module 5. In order to avoid the phenomenon that the wireless signals are attenuated too fast along with the floors, the first communication module 5 and the second communication module 6 both adopt low-power-consumption wide area network transmission modules such as LoRa or NB-loT.

In addition, the central flue system of the embodiment does not need to install a flow detection module in the smoke pipe 2, and the range hood 1 may have the fan 11 or not. The fire damper 10 and the centralized filtering means 8 can also be omitted.

As shown in fig. 3, the floor coding method of the present embodiment includes the following steps:

①, starting the system;

②, broadcasting a signal adjusted to a certain angle or a debugging signal needing to be fed back to the check valve by a first communication module of the flue fan with certain transmitting power;

③, the second communication module of the check valve of each floor receives the signal from step ② to execute the action and feeds back the signal with the same transmission power;

④, judging whether all check valve signals are received by the flue fan, if so, calculating the signal-to-noise ratio of all check valve signals, if not, increasing the transmitting power of the first communication module, judging whether the new transmitting power exceeds a threshold value, if so, reporting a fault, and if not, continuing to the step ②;

⑤, sorting the address codes of the check valves according to the signal-to-noise ratio from small to large;

⑥, binding the check valve with the address code according to the sequence of the signal-to-noise ratio from low to high.

In the above steps, the flue fan 4 constitutes a master and the check valve 3 constitutes a slave.

According to the floor coding method, the characteristic that the wireless signals are attenuated along with floors is utilized, the signal to noise ratio is counted, sequenced and calculated to serve as the basis for judging the floors, the valve body can be matched with the floors in a self-adaptive mode, and the floor coding distribution network is not needed to be carried out manually during installation.

Claims (6)

1. The utility model provides a central flue system, is including installing range hood (1) at different floors, and the air outlet of every range hood (1) all is linked together with public flue (7) through respective tobacco pipe (2), all installs check valve (3) in every tobacco pipe (2) install flue fan (4), its characterized in that in public flue (7): the flue gas fan (4) is provided with a first communication module (5) capable of transmitting debugging signals, and the check valve (3) is provided with a second communication module (6) capable of receiving the debugging signals and transmitting corresponding feedback signals to the first communication module.

2. The central flue system of claim 1 wherein: the first communication module (5) and the second communication module (6) both adopt low-power-consumption wide area network transmission modules such as LoRa or NB-loT.

3. The central flue system of claim 1 wherein: a centralized filtering device (8) is arranged in the common flue (7), and the centralized filtering device (8) is positioned at the front end of the flue fan (4).

4. The central flue system of claim 1 wherein: and a valve plate control motor (9) for adjusting the opening angle of the check valve (3) is arranged on the smoke pipe (2).

5. The central flue system of claim 1 wherein: the method is characterized in that: the outlet end of the smoke tube (2) is provided with a fire damper (10), and the air outlet of the range hood (1) is communicated with a public flue (7) through the smoke tube (2) and the fire damper (10).

6. A floor coding method for a central flue system as claimed in claim 1, characterized in that it comprises the following steps:

①, starting the system;

②, broadcasting a signal adjusted to a certain angle or a debugging signal needing to be fed back to the check valve by a first communication module of the flue fan with certain transmitting power;

③, the second communication module of the check valve of each floor receives the signal from step ② to execute the action and feeds back the signal with the same transmission power;

④, judging whether all check valve signals are received by the flue fan, if so, calculating the signal-to-noise ratio of all check valve signals, if not, increasing the transmitting power of the first communication module, judging whether the new transmitting power exceeds a threshold value, if so, reporting a fault, and if not, continuing to the step ②;

⑤, sorting the address codes of the check valves according to the signal-to-noise ratio from small to large;

⑥, binding the check valve with the address code according to the sequence of the signal-to-noise ratio from low to high.

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