CN112555933A - Centralized smoke exhaust system for buildings and smoke exhaust method thereof - Google Patents
Centralized smoke exhaust system for buildings and smoke exhaust method thereof Download PDFInfo
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- CN112555933A CN112555933A CN201910917343.7A CN201910917343A CN112555933A CN 112555933 A CN112555933 A CN 112555933A CN 201910917343 A CN201910917343 A CN 201910917343A CN 112555933 A CN112555933 A CN 112555933A
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- outdoor
- filter screen
- main control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/02—Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Ventilation (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Abstract
The invention relates to a centralized smoke exhaust system for buildings, which comprises M indoor smoke exhaust ventilators, a common flue and an outdoor main fan system; the outdoor main fan system comprises an outdoor discharge flue, an outdoor fan system, an outdoor main control system and an outdoor oil fume filtering device; the method is characterized in that: the outdoor lampblack filtering device comprises two filter screens. Compared with the prior art, the invention has the advantages that: the outdoor oil fume filtering device is provided with two filter screens which can be overlapped and then can fully cover the inner section of the outdoor discharge flue, when the starting rate is less than or equal to the preset threshold value, the two filter screens are overlapped so as to ensure that the partial section of the outdoor discharge flue is completely unblocked, and an outdoor fan system is closed; therefore, under the condition of low opening rate, the oil smoke can be discharged smoothly, and the energy consumption can be reduced.
Description
Technical Field
The invention relates to a centralized smoke exhaust system for a building and a smoke exhaust method thereof.
Background
The range hood that uses in the kitchen of house and apartment at present, most all are independent separately, do not have the relation between the range hood of different residents, the user installs by oneself and inhales oil smoke and has very big randomness, most users directly set up the discharge port of range hood at the window trompil or the wall body hole digging in kitchen, the oil smoke directly discharges from the outer wall, cause the pollution interference to upper and lower floor resident family, and can cause oil pollution to the outer wall, can also influence the whole outward appearance image of building simultaneously.
With the rapid development of economy, more and more high-rise residences pull out the ground like spring shoots after rain. In order to keep the appearance of the whole building, a centralized smoke exhaust system of the building is adopted to perform centralized smoke exhaust in a plurality of high-rise civil residences, the system comprises indoor smoke exhaust ventilators arranged in kitchens of different residents on different floors, a public flue arranged in the building and an outdoor main fan system arranged on the top layer of the building, air outlets of the indoor smoke exhaust ventilators are communicated with the public flue, and an air outlet of the public flue is communicated with an inlet of the outdoor fan system.
For a centralized smoke exhaust system of a building, even if the number of users for starting an indoor range hood is small, namely under the condition of low start-up rate, the system still keeps the operation of an outdoor main fan system and keeps the negative pressure in a public flue, which is a working mode of extremely wasting energy.
Disclosure of Invention
The invention aims to solve the primary technical problem of providing a building centralized smoke exhaust system in the building centralized smoke exhaust system, which can ensure smooth discharge of oil smoke and reduce energy consumption at the same time under the condition of low power-on rate.
The invention further aims to provide a smoke exhaust method of a centralized smoke exhaust system of a building, which can ensure smooth discharge of oil smoke and reduce energy consumption at low power-on rate.
The technical scheme adopted by the invention for solving the above-mentioned primary technical problems is as follows: a centralized smoke exhaust system for buildings comprises M smoke exhaust ventilators arranged in kitchens of residents on different floors, wherein M is a natural number; the public flue is arranged inside the building, and the outdoor main fan system is arranged on the top layer of the building; the outdoor main fan system comprises an outdoor discharge flue, an outdoor fan system, an outdoor main control system and an outdoor lampblack filtering device, wherein the outdoor lampblack filtering device is arranged in the outdoor discharge flue; the outdoor fan system is in communication connection with the outdoor main control system, and the M indoor range hoods are in communication connection with the outdoor main control system; the method is characterized in that: the outdoor lampblack filtering device comprises a first filter screen and a second filter screen arranged above the first filter screen, the second filter screen is connected with the electric push rod and can move left and right under the action of the electric push rod, and the electric push rod is in communication connection with the outdoor main control system and is controlled by the outdoor main control system to work; the areas of the first filter screen and the second filter screen are smaller than the inner section of the outdoor discharge flue, and the second filter screen can move under the action of the electric push rod, so that the second filter screen and the first filter screen can be paved on the inner section of the whole outdoor discharge flue; meanwhile, the second filter screen can also move under the action of the electric push rod, so that the second filter screen is overlapped with the first filter screen to release part of the section of the outdoor discharge flue; when an indoor range hood is started, the outdoor main control system counts the number of the started indoor range hoods, divides the number of the started indoor range hoods by the total number M of the indoor range hoods, marks the result as the starting rate, and sends a control instruction to the electric push rod if the starting rate is less than or equal to a preset threshold value, so that the electric push rod pushes the second filter screen to move, the second filter screen is overlapped with the first filter screen, part of the section of an outdoor exhaust flue is completely unblocked, and meanwhile, the outdoor main control system keeps the outdoor fan system closed; if the starting rate is larger than the preset threshold value, the outdoor main control system sends a control instruction to the electric push rod, the electric push rod pushes the second filter screen to move, the second filter screen and the first filter screen are made to fully cover the inner section of the whole outdoor discharge flue, and meanwhile, the outdoor main control system starts the outdoor fan system.
As an improvement, the areas of the first filter screen and the second filter screen are both 50% -60% of the inner section of the outdoor exhaust flue.
The first filter screen and the second filter screen have the same area, when the second filter screen is completely positioned above the first filter screen, the first filter screen and the second filter screen are overlapped, and the partial cross section of the outdoor discharge flue, which is positioned outside the first filter screen and the second filter screen, is completely unblocked at the moment.
And the outdoor smoke exhaust channel is internally provided with an outdoor smoke filtering device, and pressure sensors are arranged below the outdoor smoke filtering device and electrically connected with an outdoor main control system.
The scheme adopted by the invention for solving the further technical problems is as follows: a smoke discharging method of the centralized smoke discharging system for the building with the structure is characterized by comprising the following steps:
step 1, starting a building centralized smoke exhaust system, keeping an outdoor fan system closed by an outdoor main control system, counting the number of started indoor range hoods by the outdoor main control system, dividing the number of started indoor range hoods by the total number M of the indoor range hoods, and marking the result as an on-time rate Gi; in addition, a mapping relation table of different preset pressure values in the outdoor smoke channel under different on-time rates is preserved in the outdoor main control system in advance, and then the step 2 is carried out;
step 2, judging whether the turn-on rate Gi is less than or equal to a preset threshold value, if so, sending a control instruction to an electric push rod by an outdoor main control system, enabling the electric push rod to push a second filter screen to move, enabling the second filter screen to be overlapped with a first filter screen, enabling partial section of an outdoor discharge flue to be completely unblocked, simultaneously keeping an outdoor fan system closed by the outdoor main control system, and then returning to the step 1; if the starting rate is greater than the preset threshold value, the outdoor main control system sends a control instruction to the electric push rod, so that the electric push rod pushes the second filter screen to move, the second filter screen and the first filter screen are paved on the inner section of the whole outdoor discharge flue together, and meanwhile, the outdoor main control system starts an outdoor fan system and then enters the step 3;
step 5, judging whether the difference value between P2 and P1 is larger than or equal to a preset value M, if so, sending a reminding signal for replacing the outdoor oil smoke filtering device by the outdoor main control system, and entering step 6; if not, directly entering the step 6;
step 6, judging whether P2 is greater than or equal to Pi, if so, indicating that the second filter screen is not enough to keep the negative pressure in the outdoor discharge flue after the second filter screen is overlapped with the first filter screen so as to ensure that partial section of the outdoor discharge flue is completely unblocked, and the oil smoke concentration is larger, and then continuously keeping the outdoor fan system to be started and increasing the rotating speed of the outdoor fan system; if not, after the second filter screen is overlapped with the first filter screen so that part of the cross section of the outdoor discharge flue is completely unblocked, the internal pressure of the outdoor discharge flue is normal, the outdoor unit does not need to be started, and the outdoor main control system closes the outdoor fan system and returns to the step 1.
Compared with the prior art, the invention has the advantages that: the outdoor lampblack filtering device is provided with two superposed filter screens which can fully cover the inner section of the outdoor discharge flue, when the starting rate is less than or equal to the preset threshold value, the two filter screens are overlapped so that part of the section of the outdoor discharge flue is completely unblocked, and an outdoor fan system is closed; therefore, under the condition of low opening rate, the oil smoke can be discharged smoothly, and the energy consumption can be reduced.
Drawings
Fig. 1 is a schematic structural diagram of a centralized smoke exhaust system of a building in an embodiment of the invention (two filter screens are in an overlapped state);
FIG. 2 is a schematic structural view of a centralized smoke evacuation system for a building according to an embodiment of the present invention (the two filter screens are fully laid on the inner cross section of the whole outdoor smoke evacuation path);
fig. 3 is a flow chart of a smoke exhaust method of the centralized smoke exhaust system of the building in the embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 and 2, the centralized smoke exhaust system for a building comprises a plurality of indoor smoke exhaust ventilators 11 … … 1M arranged in kitchens of residents on different floors, a common flue 2 arranged in the building, and an outdoor main fan system 3 arranged on the top floor of the building, wherein the outdoor main fan system comprises an outdoor smoke exhaust flue 33, an outdoor fan system 31, an outdoor main control system 32 and an outdoor smoke filter 34, the outdoor smoke filter 34 is arranged in the outdoor smoke exhaust flue 33, air outlets of the smoke exhaust ventilators 11 … … 1M in the M rooms are all communicated with the common flue 2 through an angle-adjustable electric check valve 4, an outlet of the common flue 2 is communicated with an inlet of the outdoor smoke exhaust flue 33, an outlet of the outdoor smoke exhaust flue 33 is communicated with an inlet of the outdoor fan system 31, and an outlet of the outdoor fan system 31 is directly communicated with the outside through an air cap 36; the outdoor fan system 31 is in communication connection with the outdoor main control system 32, and the M indoor range hoods 11 … … 1M are in communication connection with the outdoor main control system; in this embodiment, the outdoor lampblack filtering device 34 comprises a first filter screen 341 fixedly arranged, and a second filter screen 342 movably arranged above the first filter screen 341, wherein the second filter screen 342 is connected with the electric push rod 5 and can move left and right under the action of the electric push rod 5, and the electric push rod 5 is in communication connection with the outdoor main control system 32 and is controlled by the outdoor main control system to work; the areas of the first filter screen 341 and the second filter screen 342 are both smaller than the inner section of the outdoor smoke exhaust duct, preferably, the areas of the first filter screen 341 and the second filter screen 342 are the same and are both 50% -60% of the inner section of the outdoor smoke exhaust duct, and the second filter screen 342 can move under the action of the electric push rod 5, so that the second filter screen 342 and the first filter screen 341 can be paved on the inner section of the whole outdoor smoke exhaust duct, as shown in fig. 2; meanwhile, the second filter screen can also move under the action of the electric push rod, so that the second filter screen 342 is overlapped with the first filter screen 341 to release a partial section of the outdoor smoke exhaust channel, which is shown in fig. 1; when an indoor range hood is started, the outdoor main control system counts the number of the started indoor range hoods, divides the number of the started indoor range hoods by the total number M of the indoor range hoods, marks the result as the starting rate, and sends a control instruction to the electric push rod if the starting rate is less than or equal to a preset threshold value, so that the electric push rod pushes the second filter screen to move, the second filter screen is overlapped with the first filter screen, part of the section of an outdoor exhaust flue is completely unblocked, and meanwhile, the outdoor main control system keeps the outdoor fan system closed; if the starting rate is larger than the preset threshold value, the outdoor main control system sends a control instruction to the electric push rod, the electric push rod pushes the second filter screen to move, the second filter screen and the first filter screen are made to fully cover the inner section of the whole outdoor discharge flue, and meanwhile, the outdoor main control system starts the outdoor fan system.
In addition, in the embodiment, the pressure sensors 6 are arranged below the outdoor lampblack filtering device in the outdoor discharge flue and below the outdoor lampblack filtering device, and the pressure sensors are electrically connected with the outdoor main control system. The smoke exhaust method of the centralized smoke exhaust system for the building comprises the following steps, as shown in fig. 3:
step 1, starting a building centralized smoke exhaust system, keeping an outdoor fan system closed by an outdoor main control system, counting the number of started indoor range hoods by the outdoor main control system, dividing the number of started indoor range hoods by the total number M of the indoor range hoods, and marking the result as an on-time rate Gi; in addition, a mapping relation table of different preset pressure values in the outdoor discharge flue under different on-time rates is pre-stored in the outdoor main control system, the mapping relation table can be obtained in an experimental form in advance and stored in the outdoor main control system, and then the step 2 is carried out;
step 2, judging whether the turn-on rate Gi is less than or equal to a preset threshold value, if so, sending a control instruction to an electric push rod by an outdoor main control system, enabling the electric push rod to push a second filter screen to move, enabling the second filter screen to be overlapped with a first filter screen, enabling partial section of an outdoor discharge flue to be completely unblocked, simultaneously keeping an outdoor fan system closed by the outdoor main control system, and then returning to the step 1; if the starting rate is greater than the preset threshold value, the outdoor main control system sends a control instruction to the electric push rod, so that the electric push rod pushes the second filter screen to move, the second filter screen and the first filter screen are paved on the inner section of the whole outdoor discharge flue together, and meanwhile, the outdoor main control system starts an outdoor fan system and then enters the step 3;
step 5, judging whether the difference value between P2 and P1 is larger than or equal to a preset value M, if so, indicating that the resistance effect on the outdoor smoke vent is obvious after the second filter screen and the first filter screen are paved on the inner section of the whole outdoor smoke vent together, at this moment, the filter screen is probably blocked because of long-term non-cleaning, at this moment, the outdoor main control system sends a reminding signal for replacing the outdoor oil smoke filtering device, and the step 6 is carried out; if not, directly entering the step 6;
step 6, judging whether P2 is greater than or equal to Pi, if so, indicating that the second filter screen is not enough to keep the negative pressure in the outdoor discharge flue after the second filter screen is overlapped with the first filter screen so as to ensure that partial section of the outdoor discharge flue is completely unblocked, and the oil smoke concentration is larger, and then continuously keeping the outdoor fan system to be started and increasing the rotating speed of the outdoor fan system; if not, after the second filter screen is overlapped with the first filter screen so that part of the cross section of the outdoor discharge flue is completely unblocked, the internal pressure of the outdoor discharge flue is normal, the outdoor unit does not need to be started, and the outdoor main control system closes the outdoor fan system and returns to the step 1.
Claims (5)
1. A centralized smoke exhaust system for buildings comprises M smoke exhaust ventilators arranged in kitchens of residents on different floors, wherein M is a natural number; the public flue is arranged inside the building, and the outdoor main fan system is arranged on the top layer of the building; the outdoor main fan system comprises an outdoor discharge flue, an outdoor fan system, an outdoor main control system and an outdoor lampblack filtering device, wherein the outdoor lampblack filtering device is arranged in the outdoor discharge flue; the outdoor fan system is in communication connection with the outdoor main control system, and the M indoor range hoods are in communication connection with the outdoor main control system; the method is characterized in that: the outdoor lampblack filtering device comprises a first filter screen and a second filter screen arranged above the first filter screen, the second filter screen is connected with the electric push rod and can move left and right under the action of the electric push rod, and the electric push rod is in communication connection with the outdoor main control system and is controlled by the outdoor main control system to work; the areas of the first filter screen and the second filter screen are smaller than the inner section of the outdoor discharge flue, and the second filter screen can move under the action of the electric push rod, so that the second filter screen and the first filter screen can be paved on the inner section of the whole outdoor discharge flue; meanwhile, the second filter screen can also move under the action of the electric push rod, so that the second filter screen is overlapped with the first filter screen to release part of the section of the outdoor discharge flue; when an indoor range hood is started, the outdoor main control system counts the number of the started indoor range hoods, divides the number of the started indoor range hoods by the total number M of the indoor range hoods, marks the result as the starting rate, and sends a control instruction to the electric push rod if the starting rate is less than or equal to a preset threshold value, so that the electric push rod pushes the second filter screen to move, the second filter screen is overlapped with the first filter screen, part of the section of an outdoor exhaust flue is completely unblocked, and meanwhile, the outdoor main control system keeps the outdoor fan system closed; if the starting rate is larger than the preset threshold value, the outdoor main control system sends a control instruction to the electric push rod, the electric push rod pushes the second filter screen to move, the second filter screen and the first filter screen are made to fully cover the inner section of the whole outdoor discharge flue, and meanwhile, the outdoor main control system starts the outdoor fan system.
2. The centralized building smoke exhaust system according to claim 1, wherein: the areas of the first filter screen and the second filter screen are both 50% -60% of the inner section of the outdoor smoke exhaust duct.
3. The centralized building smoke exhaust system according to claim 2, wherein: the first filter screen and the second filter screen have the same area, when the second filter screen is completely positioned above the first filter screen, the first filter screen and the second filter screen are overlapped, and the partial cross section of the outdoor discharge flue, which is positioned outside the first filter screen and the second filter screen, is completely unblocked at the moment.
4. The centralized building smoke exhaust system according to claim 1, wherein: and pressure sensors are arranged below the outdoor lampblack filtering device in the outdoor smoke channel and below the outdoor lampblack filtering device and are electrically connected with the outdoor main control system.
5. A smoke exhaust method of a centralized smoke exhaust system for buildings as claimed in claim 4, characterized by comprising the following steps:
step 1, starting a building centralized smoke exhaust system, keeping an outdoor fan system closed by an outdoor main control system, counting the number of started indoor range hoods by the outdoor main control system, dividing the number of started indoor range hoods by the total number M of the indoor range hoods, and marking the result as an on-time rate Gi; in addition, a mapping relation table of different preset pressure values in the outdoor smoke channel under different on-time rates is preserved in the outdoor main control system in advance, and then the step 2 is carried out;
step 2, judging whether the turn-on rate Gi is less than or equal to a preset threshold value, if so, sending a control instruction to an electric push rod by an outdoor main control system, enabling the electric push rod to push a second filter screen to move, enabling the second filter screen to be overlapped with a first filter screen, enabling partial section of an outdoor discharge flue to be completely unblocked, simultaneously keeping an outdoor fan system closed by the outdoor main control system, and then returning to the step 1; if the starting rate is greater than the preset threshold value, the outdoor main control system sends a control instruction to the electric push rod, so that the electric push rod pushes the second filter screen to move, the second filter screen and the first filter screen are paved on the inner section of the whole outdoor discharge flue together, and meanwhile, the outdoor main control system starts an outdoor fan system and then enters the step 3;
step 3, collecting a pressure value of the pressure sensor, and recording the pressure value as P1; meanwhile, a corresponding preset pressure value in the outdoor discharge flue under the current start-up rate Gi is called, the preset pressure value is marked as Pi, and then the step 4 is carried out;
step 4, the outdoor main control system sends a control command to the electric push rod, so that the electric push rod pushes the second filter screen to move, the second filter screen is overlapped with the first filter screen, and partial section of the outdoor smoke exhaust channel is completely unblocked, and then the step 5 is carried out; at the moment, the pressure value of the pressure sensor is collected again, the pressure value is recorded as P2, and then the step 5 is carried out;
step 5, judging whether the difference value between P2 and P1 is larger than or equal to a preset value M, if so, sending a reminding signal for replacing the outdoor oil smoke filtering device by the outdoor main control system, and entering step 6; if not, directly entering the step 6;
step 6, judging whether P2 is greater than or equal to Pi, if so, continuing to keep the outdoor fan system started, and increasing the rotating speed of the outdoor fan system; if not, after the second filter screen is overlapped with the first filter screen so that part of the cross section of the outdoor discharge flue is completely unblocked, the internal pressure of the outdoor discharge flue is normal, the outdoor unit does not need to be started, and the outdoor main control system closes the outdoor fan system and returns to the step 1.
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| CN201910917343.7A CN112555933B (en) | 2019-09-26 | 2019-09-26 | Centralized smoke exhaust system for buildings and smoke exhaust method thereof |
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| CN201910917343.7A CN112555933B (en) | 2019-09-26 | 2019-09-26 | Centralized smoke exhaust system for buildings and smoke exhaust method thereof |
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| CN112555933A true CN112555933A (en) | 2021-03-26 |
| CN112555933B CN112555933B (en) | 2022-04-19 |
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| CN104524896A (en) * | 2014-12-29 | 2015-04-22 | 东莞市宇洁新材料有限公司 | Indoor air purification device and method capable of detecting service life of particulate filter |
| CN207286987U (en) * | 2017-09-22 | 2018-05-01 | 上海海立特种制冷设备有限公司 | Strainer apparatus for automatic change |
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