CN113464991B - 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 PDFInfo
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- CN113464991B CN113464991B CN202010233805.6A CN202010233805A CN113464991B CN 113464991 B CN113464991 B CN 113464991B CN 202010233805 A CN202010233805 A CN 202010233805A CN 113464991 B CN113464991 B CN 113464991B
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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
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- F24C15/20—Removing cooking fumes
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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 the indoor range hood and a common flueOutdoor host computer, high in the clouds server and service terminal, its characterized in that: the target air volume of the indoor range hood is preset by the following method: the method comprises the steps that a service terminal is connected with an indoor range hood firstly, then the type and installation environment parameters of the indoor range hood are sent to a cloud server, and the cloud server determines target air volume initial values Q corresponding to different fan gears according to the type 0 And then determining the discount coefficient alpha of each gear corresponding to the currently set target air volume according to the installation environment parameters i And a preset duty ratio value beta i The target air quantity corresponding to different fan gears is Q 0 ×α i ×β i . Compared with the prior art, the indoor unit of 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 can better adapt to the user environment.
Description
Technical Field
The invention relates to a method for presetting target air quantity 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 centralized smoke exhaust system of the existing building, in order to facilitate production and authentication, the gear air volume of an indoor smoke exhaust ventilator is fixed, an outdoor auxiliary fan in an outdoor host generally adjusts the rotating speed and starts and stops according to the change of the starting rate of an indoor unit, the indoor smoke exhaust ventilators in the same batch are installed in kitchens of different users, on one hand, the change of the relative positions of doors and windows can cause the change of the oil smoke suction air volume required by the same cooking, the difference of the target effective air volume is inevitably caused, on the other hand, the smoke exhaust ventilator is far away from a flue, the smoke exhaust resistance is different due to different turning of a smoke pipe and the change of the cross section of the flue, the initial value and the adjusting range of the target air volume also need to be differently customized, moreover, the auxiliary fan is higher than the difference of the auxiliary exhaust effect of a low floor, the different starting rates of the floors can cause the variation of the auxiliary exhaust effect, and further the user experience effect is influenced.
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 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;
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 Q 0 ；
Step 8, the service terminal obtains 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 alpha i ；
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 impedance of the home terminal 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 impedance as S 1 ；
Step 10, the service terminal inputs information of the total floor, the current floor and the sectional area of the public flue corresponding to the floor and sends the information to the cloud server, the cloud server calculates the flue impedance and records the flue impedance as S 2 ；
Step 11, the cloud server according to S 1 +S 2 Resistance information, determining a preset duty ratio value of each gear corresponding to the currently set target air volume, and recording as beta i ；
Step 12, the cloud server enables the adaptive target air volume initial values Q corresponding to different fan gears of the indoor unit 0 Target air volume discount coefficient alpha i And a preset duty value beta i The data is transmitted back to the corresponding indoor range hood and written into a memory;
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 process 0 ×α i ×β i 。
As a refinement, alpha in step 8 i Obtained by the following formula:
wherein L is 1i The distance between the center of the stove burner in the kitchen of the user corresponding to the floor and the left and right central planes of the indoor range hood is calculated; l is 1 The 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 with the corresponding model；L 2i The distance between the top surface of the range hood in the middle indoor of the corresponding floor and the table surface of the kitchen range; l is 2 When 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 surface of a kitchen range is a preset constant; l is 3i The distance between the center of the stove burner in the kitchen of the corresponding floor user and the rear wall surface is; l is 3 The distance between the center of the stove burner and the rear wall surface is a preset constant for the standard indoor range hood of the corresponding model; m is a preset constant, and the value range of m is 0-50%; a. The L Is L 1 The directional installation distance influences the proportionality coefficient, and the range is [0.01]A preset constant of (1); b is L Is L 2 The directional installation distance influences the proportionality coefficient, and the range is [0.01]A preset constant of (1); c L Is L 3 The directional installation distance 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 formula 1 ：
Wherein v is 0 、L 0 、D 0 、ζ 0 The 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; s 10 Impedance measured in the early stage of a standard kitchen in a laboratory is a prestored constant.
In a further improvement, in the step 10, S is obtained by the following formula 2 ：
Wherein v is 20 、L 20 、D 20 The 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. of 2 、L 22 、D 2 The 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 smoke tube in the floor chamber and the air outlet of the roof, the sectional area of the public flue and lambda 20 Coefficient of friction resistance, lambda, of the pipe known and stored for the laboratory 2 Common flue friction resistance coefficient selected for the current building developer; ζ represents a unit 2 The local resistance coefficient of the public flue selected by the current building developer; zeta 20 The 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; s 20 The common flue impedance was measured for the laboratory standard kitchen early stage as a pre-stored constant.
In a further improvement, in step 11, the duty ratio β is preset i Obtained by the following method:
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 a range hood in one room, and awakening an outdoor host;
step 2, the service terminal acquires equipment information of the indoor range hood which is correspondingly started;
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;
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 Q 0 ；
Step 8, the service terminal acquires the safety of the corresponding indoor range hoodInstalling position data, determining a target air volume discount coefficient corresponding to the indoor range hood, and recording the discount coefficient as alpha i ；
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 impedance of the home terminal 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 impedance as S 1 ；
Step 10, inputting information of total floors, current floors and sectional area information of public flues corresponding to the floors by the service terminal, sending the information to the cloud server, calculating flue impedance by the cloud, and recording the flue impedance as S 2 ；
Step 11, the cloud server according to S 1 +S 2 Resistance information, determining a preset duty ratio value of each gear corresponding to the currently set target air volume, and recording as beta i ；
Step 12, the cloud server enables the adaptive target air volume initial values Q corresponding to different fan gears of the indoor unit 0 Target air volume discount coefficient alpha i And a preset duty value beta i The data is transmitted back to the corresponding indoor range hood and written into a memory;
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 process 0 ×α i ×β i 。
Alpha in the above step 8 i Obtained by the following formula:
wherein L is 1i The distance between the center of the stove burner in the kitchen of the user corresponding to the floor and the left and right central planes of the indoor range hood is calculated; l is a radical of an alcohol 1 The 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 is 2i The distance between the top surface of the range hood in the middle room of the corresponding floor and the surface of the kitchen rangeThe distance of (d); l is 2 When 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 is 3i The distance between the center of the stove burner in the kitchen of the corresponding floor user and the rear wall surface is defined; l is 3 The distance between the center of the stove burner and the rear wall surface is a preset constant for the standard indoor range hood of the corresponding model; m is a preset constant, and the value range of m is 0-50%; a. The L The mounting distance in the L1 direction affects the proportionality coefficient in the range of [0.01]A preset constant of (1); b is L The mounting distance in the L2 direction affects the proportionality coefficient, and the range is [0.01]A preset constant of (1); c L The installation distance in the L3 direction affects the proportionality coefficient in the range of [0.1,0.6]Is constant.
In the above step 9, S is obtained by the following formula 1 ：
Wherein v is 0 、L 0 、D 0 、ζ 0 The 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 indoor smoke pipes of users corresponding to floors, zeta obtains the resistance of each turn according to the turn angles of different turns by inquiring a resistance table of heating and ventilation industry according to the turn number and the corresponding turn angles of the indoor smoke pipes corresponding to the floors, and then superposes the resistances of a plurality of turns according to the turn number; s. the 10 Impedance measured in the early stage of a standard kitchen in a laboratory is a prestored constant.
In the above step 10, S is obtained by the following formula 2 ：
Wherein v is 20 、L 20 、D 20 The reference flow rate of the smoke is respectively measured in the early stage of a standard kitchen in a laboratory and is pre-stored, and the length of a public flue and the sectional area of the public flue between an outlet of a smoke tube in a corresponding floor room and an air outlet of a roof are determined; v. of 2 、L 22 、D 2 The 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 lambda 20 Coefficient of friction resistance, lambda, of the pipe known and stored for the laboratory 2 Common flue friction resistance coefficient selected for the current building developer; zeta 2 The local resistance coefficient of the public flue selected by the current building developer; ζ represents a unit 20 The 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; s 20 The common flue impedance was measured for the laboratory standard kitchen early stage as a pre-stored constant.
In the above step 11, the duty ratio value β is preset i Obtained by the following method:
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 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 Q 0 ；
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 alpha i ；
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 impedance of the home terminal 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 impedance as S 1 ；
Step 10, inputting information of total floors, current floors and sectional area information of public flues corresponding to the floors by the service terminal, sending the information to the cloud server, calculating flue impedance by the cloud, and recording the flue impedance as S 2 ；
Step 11, the cloud server according to S 1 +S 2 Resistance information, determining a preset duty ratio value of each gear corresponding to the currently set target air volume, and recording as beta i ；
Step 12, the cloud server enables the adaptive target air volume initial values Q corresponding to different fan gears of the indoor unit 0 Target air volume discount coefficient alpha i And a preset duty value beta i The data is transmitted back to the corresponding indoor range hood and written into a memory;
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 process 0 ×α i ×β i 。
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 8 i Obtained by the following formula:
wherein L is 1i The 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 is a radical of an alcohol 1 The 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 is a radical of an alcohol 2i The distance between the top surface of the range hood in the middle indoor of the corresponding floor and the table surface of the kitchen range; l is 2 When 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 surface of a kitchen range is a preset constant; l is a radical of an alcohol 3i The distance between the center of the stove burner in the kitchen of the corresponding floor user and the rear wall surface is; l is a radical of an alcohol 3 The distance between the center of the stove burner and the rear wall surface is a preset constant for the standard indoor range hood of the corresponding model; m is a preset constant, and the value range of m is 0-50%; a. The L Is L 1 The directional installation distance influences the proportionality coefficient, and the range is [0.01]A preset constant of (1); b is L Is L 2 The directional installation distance influences the proportionality coefficient, and the range is [0.01]A preset constant of (1); c L Is L 3 Direction safetyThe distance influences the proportionality coefficient in the range of 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 formula 1 ：
Wherein v is 0 、L 0 、D 0 、ζ 0 The 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 indoor smoke pipes of users corresponding to floors, zeta obtains the resistance of each turn according to the turn angles of different turns by inquiring a resistance table of heating and ventilation industry according to the turn number and the corresponding turn angles of the indoor smoke pipes corresponding to the floors, and then superposes the resistances of a plurality of turns according to the turn number; s 10 Impedance measured in the early stage of a standard kitchen in a laboratory is a prestored 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 formula 2 ：
Wherein v is 20 、L 20 、D 20 Respectively is a smoke reference flow rate and a corresponding floor which are measured in the early stage of a standard kitchen in a laboratory and are preserved in advanceThe length of a public flue between an outlet of the indoor smoke tube and an air outlet of the roof and the sectional area of the public flue are reduced; v. of 2 、L 22 、D 2 The 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 lambda 20 Coefficient of friction resistance, lambda, of the pipe known and stored for the laboratory 2 Common flue friction resistance coefficient selected for the current building developer; zeta 2 The local resistance coefficient of the public flue selected by the current building developer; zeta 20 The 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; s 20 The common flue impedance was measured for the laboratory standard kitchen early stage as 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 preset i Obtained by the following method:
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| 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 |
| CN115789731A (en) * | 2022-11-30 | 2023-03-14 | 广东美的白色家电技术创新中心有限公司 | Control method, control device, system and storage medium of central smoke machine system |
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| CN110189022A (en) * | 2019-05-30 | 2019-08-30 | 华帝股份有限公司 | Model selection method for range hood |
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| CN109631120B (en) * | 2019-01-09 | 2020-02-07 | 杭州老板电器股份有限公司 | Centralized variable-frequency smoke discharge control method and device |
| CN110230830B (en) * | 2019-04-25 | 2020-08-11 | 宁波方太厨具有限公司 | Central flue system and target air volume control method thereof |
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| CN209706155U (en) * | 2018-11-21 | 2019-11-29 | 宁波方太厨具有限公司 | A kind of building central flue system |
| CN110189022A (en) * | 2019-05-30 | 2019-08-30 | 华帝股份有限公司 | Model selection method for range hood |
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