CN113464991A - Method for presetting target air volume of indoor range hood in centralized smoke exhaust system of building - Google Patents

Method for presetting target air volume of indoor range hood in centralized smoke exhaust system of building Download PDF

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CN113464991A
CN113464991A CN202010233805.6A CN202010233805A CN113464991A CN 113464991 A CN113464991 A CN 113464991A CN 202010233805 A CN202010233805 A CN 202010233805A CN 113464991 A CN113464991 A CN 113464991A
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indoor
range hood
target air
floor
air volume
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CN113464991B (en
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何立博
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Ningbo Fotile Kitchen Ware Co Ltd
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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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Abstract

The invention relates to a method for presetting target air volume of an indoor range hood in a building centralized smoke exhaust system, wherein the building centralized smoke exhaust system comprises an indoor range hood, a public flue, an outdoor host, a cloud server and a service terminal, and is characterized in that: the target air volume of the indoor range hood is preset by the following method: the service terminal firstly establishes connection with the indoor range hood, then sends the type and the installation environment parameters of the indoor range hood to the cloud server, and the cloud server determines target air volume initial values Q corresponding to different fan gears according to the type0And then determining the discount coefficient alpha of each gear corresponding to the currently set target air volume according to the installation environment parametersiAnd a preset duty ratio value betaiThe target air quantity corresponding to different fan gears is Q0×αi×βi. Compared with the prior art, the invention considers the installation environment of the range hood in the user side room and can dynamically adjust and update the target air quantity and the initial gear of the indoor unit, so that the indoor unit canThe user environment can be better adapted.

Description

Method for presetting target air volume of indoor range hood in centralized smoke exhaust system of building
Technical Field
The invention relates to a method for presetting target air volume of an indoor range hood in a centralized smoke exhaust system of a building.
Background
At present, most of high-rise houses adopt a centralized smoke exhaust mode, an indoor range hood is connected with a public flue through a smoke pipe and a check valve, and oil smoke in a kitchen is sucked by the indoor range hood and then is exhausted into the public flue through the smoke pipe. The top of the public flue is provided with an outdoor main machine, and the outdoor main machine further sucks and discharges the oil smoke in the public flue into outdoor atmosphere after being started.
In the existing centralized smoke exhaust system of buildings, for convenience of production and authentication, gear air quantity of an indoor smoke exhaust ventilator is fixed, an outdoor auxiliary fan in an outdoor host machine generally adjusts rotating speed and starts and stops according to the change of the starting rate of an indoor machine, the indoor smoke exhaust ventilators in the same batch are installed in kitchens of different users, on one hand, the change of relative positions of doors and windows can cause the change of oil smoke exhaust air quantity required by the same cooking, so that the difference of target effective air quantity is inevitably caused, on the other hand, the smoke exhaust resistance can be caused to be different due to the fact that the smoke exhaust ventilator is far away from a flue, a smoke pipe turns differently and the section of the flue is changed, so that the initial value and the adjusting range of the target air quantity also need to be differently customized, and furthermore, the auxiliary exhaust effect of the outdoor auxiliary fan on low floors is higher than the floor difference, therefore, different floors with the same switching-on rate can lead to the deterioration of the assistant effect, and further influence the user experience effect.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for presetting the target air volume of an indoor range hood in a centralized smoke exhaust system of a building in order to dynamically adjust and update the target air volume and the initial gear of the range hood according to different installation environments of a user.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for presetting target air volume of an indoor range hood in a building centralized smoke exhaust system is disclosed, wherein the building centralized smoke exhaust system comprises indoor range hoods installed at user sides of different floors, an air outlet of each indoor range hood of each floor is communicated with a common flue through an indoor smoke pipe, an outdoor host is installed at the top of the common flue, all the indoor range hoods are in communication connection with the outdoor host, and the outdoor host is in communication connection with a cloud server; still including the service terminal that can with high in the clouds server communication connection, its characterized in that: the target air volume of the indoor range hood is preset by the following method:
step 1, starting up a range hood in a certain room, and awakening an outdoor host;
step 2, the service terminal acquires equipment information of the indoor range hood which is correspondingly started;
step 3, the service terminal feeds the acquired equipment information back to the cloud server;
step 4, the cloud server inquires a connection key corresponding to the indoor range hood according to the received equipment information, and forwards the information to the service terminal;
step 5, the service terminal is connected with the corresponding indoor range hood;
step 6, the service terminal controls the corresponding indoor range hood to enter an adaptation mode, acquires whether the type of the indoor unit of the corresponding indoor range hood is a side suction type or a top suction type, and sends the information to the cloud server;
and 7, determining target air volume initial values corresponding to different fan gears of the cloud server according to the types of the corresponding indoor range hoods, and recording the target air volume initial values as Q0；
Step 8, the service terminal acquires the installation position data of the corresponding indoor range hood, determines the target air volume discount coefficient of the corresponding indoor range hood and records the discount coefficient as alphai；
Step 9, the service terminal obtains the length, the diameter, the turning number and the corresponding turning angle of the indoor smoke tube of the corresponding floor and sends the length, the diameter, the turning number and the corresponding turning angle of the indoor smoke tube of the corresponding floor to the cloud server, the cloud server calculates the home resistance of the user according to the length, the diameter, the turning number and the corresponding turning angle of the indoor smoke tube of the corresponding floor corresponding to the information and records the home resistance as S1；
Step 10, inputting information of the total floor, the current floor and the sectional area information of the public flue corresponding to the floor by the service terminal, sending the information to a cloud server, calculating the resistance of the flue by the cloud, and recording the resistance as S2；
Step 11, the cloud server according to S1+S2Resistance information, determining a preset duty ratio value of each gear corresponding to the currently set target air volume, and recording as betai；
Step 12, the cloud server enables the matched target wind corresponding to different fan gears of the indoor unitQuantity initial value Q0Target air volume discount coefficient alphaiAnd a preset duty value betaiThe smoke is transmitted back to the corresponding indoor oil absorption smoke and is written into the storage;
step 13, when the current indoor range hood exits the adaptation mode and enters the standby mode, the corresponding indoor range hood has the target air volume Q corresponding to different fan gears in the running process0×αi×βi。
As a refinement, alpha in step 8iObtained by the following formula:
Figure BDA0002430288040000021
wherein L is1iThe distance between the center of the stove head of the kitchen range in the kitchen of the user corresponding to the floor and the left and right central planes of the indoor range hood is determined; l is1The distance between the center of the stove burner and the left and right central planes of the indoor range hood is a preset constant when the range hood is installed in a standard mode for the indoor range hood of the corresponding model; l is2iThe distance between the top surface of the range hood in the middle room of the corresponding floor and the table surface of the cooking range is; l is2When the range hood is installed in a standard mode for an indoor range hood of a corresponding model, the distance between the top surface of the indoor range hood and the table surface of the kitchen range is a preset constant; l is3iThe distance between the center of the stove burner in the kitchen of the corresponding floor user and the rear wall surface is; l is3The distance between the center of a stove burner and the rear wall surface of an indoor range hood of a corresponding model is a preset constant; m is preset with a constant, and the value range of m is 0-50%; a. theLThe installation distance in the L1 direction influences the proportionality coefficient, and the range is [0.01, 0.5 ]]A preset constant of (1); b isLThe installation distance in the L2 direction influences the proportionality coefficient, and the range is [0.01, 0.4 ]]A preset constant of (1); cLThe installation distance in the L3 direction influences the proportionality coefficient, and the range is [0.1, 0.6 ]]Is constant.
In a further improvement, in the step 9, S is obtained by the following formula1：
Figure BDA0002430288040000031
Wherein v is0、L0、D0、ζ0The method comprises the steps of respectively measuring and pre-storing a reference flow rate of smoke in an indoor smoke tube, the length of the indoor smoke tube, the diameter of an indoor smoke tube pipeline and the resistance coefficient of the indoor smoke tube in a standard kitchen in the early stage of a laboratory; v, L and D are respectively the flue gas flow velocity in the indoor flue pipe of the user corresponding to the floor, the length of the indoor flue pipe corresponding to the floor and the diameter of the indoor flue pipe corresponding to the floor; zeta is the local resistance coefficient of the indoor smoke tube of the user corresponding to the floor, zeta obtains the resistance of each turn according to the turn angle of different turns by inquiring the resistance table of the heating and ventilation industry according to the turn number and the corresponding turn angle of the indoor smoke tube corresponding to the floor, and then superposes the resistances of a plurality of turns according to the turn number; s10The resistance coefficient measured in the early stage of the standard kitchen in the laboratory is a pre-stored constant.
In a further improvement, in the step 10, S is obtained by the following formula2：
Figure BDA0002430288040000032
Wherein v is20、L20、D20The method comprises the steps of respectively measuring and pre-storing the reference flow rate of smoke gas in the early stage of a standard kitchen in a laboratory, the length of a common flue between an outlet of an indoor smoke tube of a corresponding floor and an air outlet of a roof and the sectional area of the common flue; v. of2、L22、D2The reference flow rate of the smoke of the user corresponding to the floor corresponds to the length of a public flue between the outlet of the indoor smoke tube of the floor and the air outlet of the roof, the sectional area of the public flue and lambda20Coefficient of friction resistance, lambda, of the pipe known and stored for the laboratory2Common flue friction resistance coefficient selected for the current building developer; zeta2The local resistance coefficient of the public flue selected by the current building developer; zeta20The common flue local resistance coefficient is a pre-stored constant, and is measured in the early stage of a standard kitchen in a laboratory and is pre-stored; s20The common flue resistance coefficient is measured for the early stage of a standard kitchen in a laboratory and is a pre-stored constant.
In a further improvement, in step 11, the duty ratio β is presetiObtained by the following method:
Figure BDA0002430288040000033
wherein P isnFor the power corresponding to the rated operation of the indoor range hood, the delta P is equal to StotQ2Q is the exhaust air quantity corresponding to the indoor range hood, Stot＝S1+S2，η1And η2The fan efficiency and the motor efficiency corresponding to the indoor range hood are pre-stored constants.
Compared with the prior art, the invention has the advantages that: the installation environment of the range hood in the user side room is considered, the target air quantity and the initial gear of the indoor unit can be dynamically adjusted and updated, and the indoor unit can better adapt to the user environment.
Drawings
Fig. 1 is a schematic structural diagram of a centralized smoke exhaust system of a building in an embodiment of the invention.
Fig. 2 is a flow chart of a preset method for the target air volume of the indoor range hood in 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.
The invention provides a centralized building smoke exhaust system which comprises indoor smoke exhaust ventilators 1 arranged on user sides of different floors, wherein the air outlet of each indoor smoke exhaust ventilator of each floor is communicated with a public flue 3 through an indoor smoke pipe 2, an outdoor host 4 is arranged at the top of the public flue 3, all the indoor smoke exhaust ventilators are in communication connection with the outdoor host, the outdoor host is in communication connection with a cloud server 5, and the centralized building smoke exhaust system also comprises a service terminal 6 capable of being in communication connection with the cloud server.
The target air volume of the indoor range hood 1 is preset by the following method:
step 1, starting up a range hood in a certain room, and awakening an outdoor host;
step 2, the service terminal acquires equipment information of the indoor range hood which is correspondingly started;
step 3, the service terminal feeds the acquired equipment information back to the cloud server;
step 4, the cloud server inquires a connection key corresponding to the indoor range hood according to the received equipment information, and forwards the information to the service terminal;
step 5, the service terminal is connected with the corresponding indoor range hood;
step 6, the service terminal controls the corresponding indoor range hood to enter an adaptation mode, acquires whether the type of the indoor unit of the corresponding indoor range hood is a side suction type or a top suction type, and sends the information to the cloud server;
and 7, determining target air volume initial values corresponding to different fan gears of the cloud server according to the types of the corresponding indoor range hoods, and recording the target air volume initial values as Q0；
Step 8, the service terminal acquires the installation position data of the corresponding indoor range hood, determines the target air volume discount coefficient of the corresponding indoor range hood and records the discount coefficient as alphai；
Step 9, the service terminal obtains the length, the diameter, the turning number and the corresponding turning angle of the indoor smoke tube of the corresponding floor and sends the length, the diameter, the turning number and the corresponding turning angle of the indoor smoke tube of the corresponding floor to the cloud server, the cloud server calculates the home resistance of the user according to the length, the diameter, the turning number and the corresponding turning angle of the indoor smoke tube of the corresponding floor corresponding to the information and records the home resistance as S1；
Step 10, inputting information of the total floor, the current floor and the sectional area information of the public flue corresponding to the floor by the service terminal, sending the information to a cloud server, calculating the resistance of the flue by the cloud, and recording the resistance as S2；
Step 11, the cloud server according to S1+S2Resistance information, determining a preset duty ratio value of each gear corresponding to the currently set target air volume, and recording as betai；
Step 12, the cloud server enables the adaptive target air volume initial values Q corresponding to different fan gears of the indoor unit0Target air volume discount coefficient alphaiAnd a preset duty cycleValue of betaiThe smoke is transmitted back to the corresponding indoor oil absorption smoke and is written into the storage;
step 13, when the current indoor range hood exits the adaptation mode and enters the standby mode, the corresponding indoor range hood has the target air volume Q corresponding to different fan gears in the running process0×αi×βi。
Alpha in the above step 8iObtained by the following formula:
Figure BDA0002430288040000051
wherein L is1iThe distance between the center of the stove head of the kitchen range in the kitchen of the user corresponding to the floor and the left and right central planes of the indoor range hood is determined; l is1The distance between the center of the stove burner and the left and right central planes of the indoor range hood is a preset constant when the range hood is installed in a standard mode for the indoor range hood of the corresponding model; l is2iThe distance between the top surface of the range hood in the middle room of the corresponding floor and the table surface of the cooking range is; l is2When the range hood is installed in a standard mode for an indoor range hood of a corresponding model, the distance between the top surface of the indoor range hood and the table surface of the kitchen range is a preset constant; l is3iThe distance between the center of the stove burner in the kitchen of the corresponding floor user and the rear wall surface is; l is3The distance between the center of a stove burner and the rear wall surface of an indoor range hood of a corresponding model is a preset constant; m is preset with a constant, and the value range of m is 0-50%; a. theLThe installation distance in the L1 direction influences the proportionality coefficient, and the range is [0.01, 0.5 ]]A preset constant of (1); b isLThe installation distance in the L2 direction influences the proportionality coefficient, and the range is [0.01, 0.4 ]]A preset constant of (1); cLThe installation distance in the L3 direction influences the proportionality coefficient, and the range is [0.1, 0.6 ]]Is constant.
In the above step 9, S is obtained by the following formula1：
Figure BDA0002430288040000052
Wherein v is0、L0、D0、ζ0The method comprises the steps of respectively measuring and pre-storing a reference flow rate of smoke in an indoor smoke tube, the length of the indoor smoke tube, the diameter of an indoor smoke tube pipeline and the resistance coefficient of the indoor smoke tube in a standard kitchen in the early stage of a laboratory; v, L and D are respectively the flue gas flow velocity in the indoor flue pipe of the user corresponding to the floor, the length of the indoor flue pipe corresponding to the floor and the diameter of the indoor flue pipe corresponding to the floor; zeta is the local resistance coefficient of the indoor smoke tube of the user corresponding to the floor, zeta obtains the resistance of each turn according to the turn angle of different turns by inquiring the resistance table of the heating and ventilation industry according to the turn number and the corresponding turn angle of the indoor smoke tube corresponding to the floor, and then superposes the resistances of a plurality of turns according to the turn number; s10The resistance coefficient measured in the early stage of the standard kitchen in the laboratory is a pre-stored constant.
In the above step 10, S is obtained by the following formula2：
Figure BDA0002430288040000061
Wherein v is20、L20、D20The method comprises the steps of respectively measuring and pre-storing the reference flow rate of smoke gas in the early stage of a standard kitchen in a laboratory, the length of a common flue between an outlet of an indoor smoke tube of a corresponding floor and an air outlet of a roof and the sectional area of the common flue; v. of2、L22、D2The reference flow rate of the smoke of the user corresponding to the floor corresponds to the length of a public flue between the outlet of the indoor smoke tube of the floor and the air outlet of the roof, the sectional area of the public flue and lambda20Coefficient of friction resistance, lambda, of the pipe known and stored for the laboratory2Common flue friction resistance coefficient selected for the current building developer; zeta2The local resistance coefficient of the public flue selected by the current building developer; zeta20The common flue local resistance coefficient is a pre-stored constant, and is measured in the early stage of a standard kitchen in a laboratory and is pre-stored; s20The common flue resistance coefficient is measured for the early stage of a standard kitchen in a laboratory and is a pre-stored constant.
In the above step 11, the duty ratio value β is presetiObtained by the following method:
Figure BDA0002430288040000062
wherein P isnFor the power corresponding to the rated operation of the indoor range hood, the delta P is equal to StotQ2Q is the exhaust air quantity corresponding to the indoor range hood, Stot＝S1+S2，η1And η2The fan efficiency and the motor efficiency corresponding to the indoor range hood are pre-stored constants.

Claims (5)

1. A method for presetting target air volume of an indoor range hood in a building centralized smoke exhaust system is disclosed, wherein the building centralized smoke exhaust system comprises indoor range hoods installed at user sides of different floors, an air outlet of each indoor range hood of each floor is communicated with a common flue through an indoor smoke pipe, an outdoor host is installed at the top of the common flue, all the indoor range hoods are in communication connection with the outdoor host, and the outdoor host is in communication connection with a cloud server; still including the service terminal that can with high in the clouds server communication connection, its characterized in that: the target air volume of the indoor range hood is preset by the following method:
step 1, starting up a range hood in a certain room, and awakening an outdoor host;
step 2, the service terminal acquires equipment information of the indoor range hood which is correspondingly started;
step 3, the service terminal feeds the acquired equipment information back to the cloud server;
step 4, the cloud server inquires a connection key corresponding to the indoor range hood according to the received equipment information, and forwards the information to the service terminal;
step 5, the service terminal is connected with the corresponding indoor range hood;
step 6, the service terminal acquires whether the type of the indoor unit obtained by the corresponding indoor range hood is a side suction type or a top suction type, and sends the information to the cloud server;
and 7, determining different fan gear pairs of the cloud server according to the type of the corresponding indoor range hoodThe initial value of the target air volume is marked as Q0；
Step 8, the service terminal acquires the installation position data of the corresponding indoor range hood, determines the target air volume discount coefficient of the corresponding indoor range hood and records the discount coefficient as alphai；
Step 9, the service terminal obtains the length, the diameter, the turning number and the corresponding turning angle of the indoor smoke tube of the corresponding floor and sends the length, the diameter, the turning number and the corresponding turning angle of the indoor smoke tube of the corresponding floor to the cloud server, the cloud server calculates the home resistance of the user according to the length, the diameter, the turning number and the corresponding turning angle of the indoor smoke tube of the corresponding floor corresponding to the information and records the home resistance as S1；
Step 10, inputting information of the total floor, the current floor and the sectional area information of the public flue corresponding to the floor by the service terminal, sending the information to a cloud server, calculating the resistance of the flue by the cloud, and recording the resistance as S2；
Step 11, the cloud server according to S1+S2Resistance information, determining a preset duty ratio value of each gear corresponding to the currently set target air volume, and recording as betai；
Step 12, the cloud server enables the adaptive target air volume initial values Q corresponding to different fan gears of the indoor unit0Target air volume discount coefficient alphaiAnd a preset duty value betaiThe smoke is transmitted back to the corresponding indoor oil absorption smoke and is written into the storage;
step 13, when the current indoor range hood exits the adaptation mode and enters the standby mode, the corresponding indoor range hood has the target air volume Q corresponding to different fan gears in the running process0×αi×βi。
2. The method for presetting the target air volume of the indoor range hood in the centralized building smoke exhaust system according to claim 1, wherein the method comprises the following steps: alpha in said step 8iObtained by the following formula:
Figure FDA0002430288030000021
wherein L is1iThe distance between the center of the stove head of the kitchen range in the kitchen of the user corresponding to the floor and the left and right central planes of the indoor range hood is determined; l is1The distance between the center of the stove burner and the left and right central planes of the indoor range hood is a preset constant when the range hood is installed in a standard mode for the indoor range hood of the corresponding model; l is2iThe distance between the top surface of the range hood in the middle room of the corresponding floor and the table surface of the cooking range is; l is2When the range hood is installed in a standard mode for an indoor range hood of a corresponding model, the distance between the top surface of the indoor range hood and the table surface of the kitchen range is a preset constant; l is3iThe distance between the center of the stove burner in the kitchen of the corresponding floor user and the rear wall surface is; l is3The distance between the center of a stove burner and the rear wall surface of an indoor range hood of a corresponding model is a preset constant; m is preset with a constant, and the value range of m is 0-50%; a. theLThe installation distance in the L1 direction influences the proportionality coefficient, and the range is [0.01, 0.5 ]]A preset constant of (1); b isLThe installation distance in the L2 direction influences the proportionality coefficient, and the range is [0.01, 0.4 ]]A preset constant of (1); cLThe installation distance in the L3 direction influences the proportionality coefficient, and the range is [0.1, 0.6 ]]Is constant.
3. The method for presetting the target air volume of the indoor range hood in the centralized building smoke exhaust system according to claim 1, wherein the method comprises the following steps: in the step 9, S is obtained by the following formula1：
Figure FDA0002430288030000022
Wherein v is0、L0、D0、ζ0The method comprises the steps of respectively measuring and pre-storing a reference flow rate of smoke in an indoor smoke tube, the length of the indoor smoke tube, the diameter of an indoor smoke tube pipeline and the resistance coefficient of the indoor smoke tube in a standard kitchen in the early stage of a laboratory; v, L and D are respectively the flue gas flow velocity in the indoor flue pipe of the user corresponding to the floor, the length of the indoor flue pipe corresponding to the floor and the diameter of the indoor flue pipe corresponding to the floor; zeta is the local resistance coefficient of the indoor tobacco pipe of the corresponding floor user, and zeta passes through the turn quantity and the corresponding turn angle of the indoor tobacco pipe of the corresponding floorInquiring a resistance meter in the heating and ventilation industry, obtaining the resistance of each turn according to the turn angles of different turns, and then superposing the resistances of a plurality of turns according to the number of turns; s10The resistance coefficient measured in the early stage of the standard kitchen in the laboratory is a pre-stored constant.
4. The method for presetting the target air volume of the indoor range hood in the centralized building smoke exhaust system as claimed in claim 1,
the method is characterized in that: in the step 10, S is obtained by the following formula2：
Figure FDA0002430288030000023
Wherein v is20、L20、D20The method comprises the steps of respectively measuring and pre-storing the reference flow rate of smoke gas in the early stage of a standard kitchen in a laboratory, the length of a common flue between an outlet of an indoor smoke tube of a corresponding floor and an air outlet of a roof and the sectional area of the common flue; v. of2、L22、D2The reference flow rate of the smoke of the user corresponding to the floor corresponds to the length of a public flue between the outlet of the indoor smoke tube of the floor and the air outlet of the roof, the sectional area of the public flue and lambda20Coefficient of friction resistance, lambda, of the pipe known and stored for the laboratory2Common flue friction resistance coefficient selected for the current building developer; zeta2The local resistance coefficient of the public flue selected by the current building developer; zeta20The common flue local resistance coefficient is a pre-stored constant, and is measured in the early stage of a standard kitchen in a laboratory and is pre-stored; s20The common flue resistance coefficient is measured for the early stage of a standard kitchen in a laboratory and is a pre-stored constant.
5. The method for presetting the target air volume of the indoor range hood in the centralized building smoke exhaust system according to claim 1, wherein the method comprises the following steps: in step 11, the duty ratio β is presetiObtained by the following method:
Figure FDA0002430288030000031
wherein P isnFor the power corresponding to the rated operation of the indoor range hood, the delta P is equal to StotQ2Q is the exhaust air quantity corresponding to the indoor range hood, Stot＝S1+S2，η1And η2The fan efficiency and the motor efficiency corresponding to the indoor range hood are pre-stored constants.
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CN113915658A (en) * 2021-11-08 2022-01-11 杭州老板电器股份有限公司 Automatic floor configuration method, equipment and medium for air valve of central range hood system
CN115143499A (en) * 2022-06-29 2022-10-04 杭州老板电器股份有限公司 Smoke exhaust system and control method
WO2024113801A1 (en) * 2022-11-30 2024-06-06 广东美的白色家电技术创新中心有限公司 Central range hood system control method and control apparatus, system, and storage medium
CN115143499B (en) * 2022-06-29 2024-06-25 杭州老板电器股份有限公司 Smoke discharging system and control method

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