CN110274285B

CN110274285B - Building public flue smoke exhaust system and control method thereof

Info

Publication number: CN110274285B
Application number: CN201910432651.0A
Authority: CN
Inventors: 于克阳; 甘从林
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-08-21
Anticipated expiration: 2039-05-23
Also published as: CN110274285A

Abstract

The utility model provides a public flue system of discharging fume of building, is including installing the range hood on different floors, and every range hood's air outlet all is linked together its characterized in that through respective tobacco pipe and public flue: the bottom of the common flue is provided with an air draft device which can draw the gas in the flue outwards, and the common flue also comprises a control system which can correspondingly control the air draft device according to the opening rate. The invention has the advantages that: this public flue of building system of discharging fume can discharge the low-rise oil smoke through the updraft ventilator of flue bottom, reduces the pressure of flue bottom to promote the ability of discharging fume and the efficiency of discharging fume of flue, the problem that the low-rise user discharged fume smoothly when having solved the culinary art peak, the smell is scurried to the return smoke, user experience has been improved, and, this control system can come corresponding control updraft ventilator's work gear according to the size of rate of opening, thereby realized the intelligent control of system of discharging fume, and made the system more energy-conserving.

Description

Building public flue smoke exhaust system and control method thereof

Technical Field

The invention relates to a building common flue, in particular to a building common flue smoke exhaust system and a control method thereof.

Background

At present, more and more high-rise residences are provided, smoke discharged from high floors is mostly discharged in a centralized mode through a common flue, the height of the residences is increased, and resistance in the whole smoke discharge flue is increased. The outlet of the high-rise public flue is generally arranged at the top of a floor, and the power provided by the range hood is limited, so that the smoke exhaust effect is not ideal, the oil smoke in the low floor cannot be exhausted in the peak cooking period, and even the oil smoke in the flue flows backwards. At present, in order to solve the problem of unsmooth smoke discharge of the existing range hood, people provide a concept of a central purification system, wherein a main fan arranged at the top end of a public flue generates power, and the smoke discharge effect is improved by matching with a fan of the range hood on the user side. However, grease particles are easily accumulated on the blades of the main fan on the roof, so that the dynamic balance of the fan is damaged, noise is increased, vibration is aggravated, regular cleaning and maintenance are required, and maintenance is troublesome. Moreover, the main blower is arranged on a common air exhaust channel, which can cause the air exhaust resistance of the system to increase. Especially when the floor number is greater than 35 layers, the negative pressure that the main fan of top building produced can't effectively be transferred down, the condition of leaking pressure appears, and is almost zero to the influence of discharging fume of low floor user, has caused the energy waste on the contrary. In summary, further improvements to the existing common flue gas exhausting system are needed.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide a building public flue smoke exhaust system which can enhance the smoke exhaust capability of a flue through an air exhaust device at the bottom of the flue, aiming at the current technical situation.

The second technical problem to be solved by the present invention is to provide a control method for a building public flue smoke exhaust system, which can realize intelligent control and has a good energy saving effect, in view of the above current state of the art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: this public flue system of discharging fume of building, including installing the range hood on different floors, the air outlet of every range hood all is linked together its characterized in that through respective tobacco pipe and public flue: the utility model discloses a gas exhaust device, including the exhaust device that can be with the gas in the flue toward outer the control system that can be according to the corresponding control of size of rate of opening the exhaust device is installed to the bottom of public flue.

Preferably, a starting signal of the range hood is transmitted to the control system through a wireless transmission device, and the control system calculates the starting rate according to the starting signal.

The control system may be installed at a plurality of positions, and preferably, the control system is installed on an outer wall of a lower portion of the common flue.

In order to purify and filter the oil smoke extracted from the common flue, the bottom of the common flue is provided with a lower air outlet communicated with an air inlet of an air extracting device, and a filtering device is arranged in an air channel between the lower air outlet and the air inlet.

In order to remind a user to replace the filtering device, a first pressure sensor is installed at the front end of the filtering device, a second pressure sensor is installed at the rear end of the filtering device, and the signal output ends of the first pressure sensor and the second pressure sensor are electrically connected with the signal input end of the control system.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the control method of the building common flue smoke exhaust system is characterized by comprising the following steps:

firstly, inputting the number N of total floor layers;

secondly, starting the indoor range hood, counting N by the control system according to the collected starting signal, and calculating the starting rate eta to be N/N;

thirdly, when eta is less than 20%, the air draft device does not work; when eta is more than or equal to 20% and less than 40%, the air draft device works at a low gear; when eta is more than or equal to 40% and less than 60%, the middle gear of the air draft device works; when eta is larger than or equal to 60%, the air draft device works in a high-grade position.

Preferably, when the air draft device in the third step is in a working state, the first pressure sensor and the second pressure sensor start to work, a pressure difference delta P between the front end and the rear end of the air draft device, which is detected by the first pressure sensor and the second pressure sensor, is transmitted to the control system, and the filter device is prompted to be replaced when the delta P is larger than or equal to 100 Pa.

Compared with the prior art, the invention has the advantages that: this public flue of building system of discharging fume can discharge the low-rise oil smoke through the updraft ventilator of flue bottom, reduces the pressure of flue bottom to promote the ability of discharging fume and the efficiency of discharging fume of flue, the problem that the low-rise user discharged fume smoothly when having solved the culinary art peak, the smell is scurried to the return smoke, user experience has been improved, and, this control system can come corresponding control updraft ventilator's work gear according to the size of rate of opening, thereby realized the intelligent control of system of discharging fume, and made the system more energy-conserving.

Drawings

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

FIG. 2 is a control logic diagram of a control method according to an embodiment of the present invention;

fig. 3 is a control logic diagram of a filtering apparatus 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, the building common flue smoke exhaust system of the present embodiment includes range hoods 1 installed on different floors, an air outlet of each range hood 1 is communicated with a common flue 3 through a respective smoke pipe 2, a fire damper 10 is installed at an outlet of the smoke pipe 2, and a main blower may be installed on a roof or not installed on the roof.

The bottom of the common flue 3 is provided with an air draft device 4, and the air draft device 4 can outwardly pump the oil smoke gas in the common flue 3 according to the requirement. The bottom of the common flue 3 is provided with a lower air outlet communicated with the air inlet of the air draft device 4, and a filtering device 7 is arranged in an air channel between the lower air outlet and the air inlet in order to avoid discharging unpurified oil smoke out of the bottom of the common flue. A first pressure sensor 8 is attached to the front end of the filter unit 7, and a second pressure sensor 9 is attached to the rear end of the filter unit 7.

The starting signal of the range hood 1 is transmitted to the control system 5 through the wireless transmission device 6, and the control system 5 calculates the starting rate according to the starting signal. The signal outputs of the first pressure sensor 8 and the second pressure sensor 9 are electrically connected to signal inputs of the control system 5. In this embodiment, the control system 5 is installed on the outer wall of the lower portion of the common flue 3. The control system 5 has a central processor for reading data and processing the data.

As shown in fig. 2, the control system 5 can control the operating gear of the air draft device 4 according to the calculated on-time ratio, and the control method specifically includes the following steps:

firstly, inputting the number N of total floor layers;

secondly, starting the indoor range hood 1, counting N by the control system 5 according to the collected starting signal, and calculating the starting rate eta to be N/N;

thirdly, when eta is less than 20%, the air draft device 4 does not work; when eta is more than or equal to 20% and less than 40%, the air draft device 4 works at a low gear; when eta is more than or equal to 40% and less than 60%, the middle gear of the air draft device 4 works; when eta is larger than or equal to 60%, the air draft device 4 works in a high-grade position.

As shown in fig. 3, the control system 5 can also determine whether the filter screen of the filtering device 7 needs to be replaced according to the magnitude of the pressure difference between the first pressure sensor 8 and the fourth pressure sensor 9. Specifically, when the air draft device 4 in the step (c) is in a working state, the first pressure sensor 8 and the second pressure sensor 9 start to work, a pressure difference Δ P between the front end and the rear end of the air draft device 4, which is detected by the first pressure sensor 8 and the second pressure sensor 9, is transmitted to the control system 5, and the filter screen of the filter device 7 is prompted to be replaced when the pressure difference Δ P is larger than or equal to 100 Pa.

Claims

1. The utility model provides a control method of building public flue system of discharging fume, building public flue system of discharging fume includes range hood (1) of installing in different floors, and the air outlet of every range hood (1) all is linked together through respective tobacco pipe (2) and public flue (3), its characterized in that: install updraft ventilator (4) that can take out the gas in the flue toward outer in the bottom of public flue (3), still including can be according to the big or small corresponding control of rate of opening control updraft ventilator's control system (5), install control system (5) on the outer wall of public flue (3) lower part, public flue (3) bottom has the lower air outlet that is linked together with updraft ventilator (4) air intake install filter equipment (7) in the wind channel between air outlet and the air intake down, first pressure sensor (8) are installed to the front end of filter equipment (7), second pressure sensor (9) are installed to the rear end of filter equipment (7), the signal output part of first pressure sensor (8) and second pressure sensor (9) with the signal input part looks electricity of control system (5) is connected, the control method comprises the following steps:

firstly, inputting the number N of total floor layers;

secondly, starting the indoor range hood (1), counting N by the control system (5) according to the collected starting signal, and calculating the starting rate eta to be N/N;

thirdly, when eta is less than 20%, the air draft device (4) does not work; when eta is more than or equal to 20% and less than 40%, the air draft device (4) works at a low gear; when eta is more than or equal to 40% and less than 60%, the middle gear of the air draft device (4) works; when eta is larger than or equal to 60%, the air draft device (4) works in a high-grade position.

2. The control method of the building common flue smoke exhaust system according to claim 1, wherein: the starting-up signal of the range hood (1) is transmitted to the control system (5) through the wireless transmission device (6), and the control system (5) calculates the starting-up rate according to the starting-up signal.

3. The control method of the building common flue smoke exhaust system according to claim 1, wherein: and (3) when the air draft device (4) in the step (c) is in a working state, the first pressure sensor (8) and the second pressure sensor (9) start to work, the pressure difference delta P between the front end and the rear end of the air draft device (4) detected by the first pressure sensor (8) and the second pressure sensor (9) is transmitted to the control system (5), and the filter device (7) is prompted to be replaced when the pressure difference delta P is larger than or equal to 100 Pa.