CN113217957A - Method for updating preset gear of indoor range hood in centralized smoke exhaust system of building - Google Patents
Method for updating preset gear of indoor range hood in centralized smoke exhaust system of building Download PDFInfo
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- CN113217957A CN113217957A CN202010068246.8A CN202010068246A CN113217957A CN 113217957 A CN113217957 A CN 113217957A CN 202010068246 A CN202010068246 A CN 202010068246A CN 113217957 A CN113217957 A CN 113217957A
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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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- 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
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Abstract
The invention relates to a method for updating preset gears of indoor range hoods in a centralized smoke exhaust system of a building, wherein the centralized smoke exhaust system of the building comprises M indoor range hoods arranged in kitchens of households on different floors, and 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 air outlets of the M indoor smoke exhaust ventilators are communicated with a common flue through indoor air outlet branch pipes, and electric check valves are arranged on the indoor air outlet branch pipes; m indoor smoke exhaust ventilators are in communication connection with an outdoor main fan system; the method is characterized in that: the preset fan gear of the indoor range hood is updated by any one of two methods. Compared with the prior art, the two methods provided by the invention can completely and independently operate under the condition that the indoor range hood is off-line, can not completely depend on an outdoor main fan system, and solves the problems of low speed and high efficiency of fan gear adjustment.
Description
Technical Field
The invention relates to a method for updating preset gears of an indoor range hood in a centralized smoke exhaust system of a building.
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, an air outlet of the indoor smoke exhaust ventilator is communicated with the public flue through an angle-adjustable electric check valve, and an air outlet of the public flue is communicated with an inlet of the outdoor fan system.
In the centralized smoke exhaust system of the building, the smoke exhaust process needs to be finally exhausted through an indoor smoke exhaust ventilator, an indoor smoke exhaust branch pipe, an electric check valve, a common flue and an outdoor main fan system; the gear of the preset fan of the indoor range hood is usually preset in advance, and cannot be adjusted according to the actual condition in the later period; and the actual operation gear of the indoor range hood fan is adjusted according to the target air volume range value sent by the outdoor main fan system, and the adjusting mode is influenced by network environment, so that the adjusting speed is low and the efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for updating the preset gear of an indoor range hood in a centralized smoke exhaust system of a building, which can adjust the gear of a preset fan of the indoor range hood according to the actual operation condition of the system.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for updating preset gears of indoor range hoods in a centralized building smoke exhaust system is disclosed, wherein the centralized building smoke exhaust system comprises M indoor range hoods arranged in kitchens of residents on different floors, and 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 air outlets of the M indoor smoke exhaust ventilators are communicated with a common flue through indoor air outlet branch pipes, and electric check valves are arranged on the indoor air outlet branch pipes; m indoor smoke exhaust ventilators are in communication connection with an outdoor main fan system; the method is characterized in that: the preset fan gear of the indoor range hood is updated by any one of the following two methods:
method 1
The electric check valves on the indoor air outlet branch pipes on different floors respectively comprise metal valve plates and electromagnetic chucks capable of adsorbing the metal valve plates so as to enable the metal valve plates to be completely opened, and the force of the electromagnetic chucks for adsorbing the metal valve plates is controlled by PWM signals transmitted to the electromagnetic chucks by the indoor range hoods on the corresponding floors; the method comprises the following steps that a relational expression between the actual air volume of each indoor range hood and the duty ratio of a PWM signal transmitted to an electromagnetic chuck is preserved in advance, and the method specifically comprises the following steps:
step 1-1, after receiving a starting signal, reading a preset fan gear of the indoor range hood, and operating according to the preset fan gear; when the indoor range hood receives the fan gear adjusting signal, the indoor range hood operates according to the adjusted fan gear; meanwhile, reading a target air volume range value corresponding to an operating fan gear by the indoor range hood, and setting the target air volume range value corresponding to the operating fan gear as [ Qx, Qd ];
1-2, waiting for a first preset time t1, and allowing the indoor range hood to operate stably;
step 1-3, controlling the electromagnetic chuck to work by adopting a PWM signal with a preset duty ratio;
step 1-4, judging whether the metal valve plate touches the electromagnetic chuck, if so, restoring the indoor range hood to the operation of a preset fan gear, and turning to the step 1-5; if not, turning to the step 1-9;
step 1-5, reducing or increasing the duty ratio of the PWM signal until the metal valve plate is just sucked by the electromagnetic chuck, recording the duty ratio of the current PWM signal, inquiring a relation between the actual air quantity of the indoor range hood and the duty ratio of the PWM signal for controlling the electromagnetic chuck, calculating and obtaining the current actual air quantity value of the indoor range hood, recording the current actual air quantity value as Qm, and then entering the step 1-6;
step 1-6, judging whether Qm is in [ Qx, Qd ], if so, recording and storing the duty ratio of the current PWM signal by taking the current time as a process coordinate, wherein the recording period is day; meanwhile, recording and storing the current running fan gear as a history coordinate according to the current time, wherein the recording period is day, and then entering the step 1-7; if not, increasing or decreasing the value of the preset fan gear by one grade, and then returning to the step 1-5;
step 1-7, judging whether the value exceeding e% in the same time period in g continuous recording periods meets the requirement that Qm is in [ Qx, Qd ], if so, updating the preset duty ratio of the PWM signal, wherein the updated preset duty ratio of the PWM signal is the duty ratio of the current PWM signal recorded and stored in the step 1-6; updating the preset fan gear, wherein the updated preset fan gear is the fan gear recorded and saved in the step 1-6, and entering the step 1-8; if not, directly entering the step 1-8; in the step, g and e are preset constants;
step 1-8, finishing the adjustment, continuing monitoring after waiting for a second preset time t2, and then returning to the step 1-1;
step 1-9, judging whether the duty ratio of the PWM signal reaches the maximum value 1, if not, increasing the duty ratio of the PWM signal, and returning to the step 1-4; if yes, entering the step 1-8;
step 1-8, judging whether the gear of a fan of an indoor range hood is maximum, if so, sending a maintenance prompting signal; if not, recording the current fan gear, temporarily increasing the fan gear to assist in starting, and returning to the step 1-4.
The second method,
The method comprises the following steps that a relational expression between actual air volume and fan rotating speed information under different fan gears is prestored in each indoor range hood, and the specific steps comprise;
step 2-1, after receiving a starting signal, the indoor range hood reads a preset fan gear and operates according to the preset fan gear; when the indoor range hood receives the fan gear adjusting signal, the indoor range hood operates according to the adjusted fan gear; meanwhile, reading a target air volume range value corresponding to an operating fan gear by the indoor range hood, and setting the target air volume range value corresponding to the operating fan gear as [ Qx, Qd ];
2-2, waiting for a first preset time t1, and allowing the indoor range hood to operate stably;
step 2-3, obtaining fan rotating speed information of the indoor range hood, and recording the fan rotating speed information as ni;
step 2-4, obtaining a relational expression between actual air volume and fan rotating speed information under corresponding fan gears, calculating and obtaining the current actual air volume value of the indoor range hood, recording the current actual air volume value as Qm, and then entering step 2-5;
step 2-5, judging whether Qm is in [ Qx, Qd ], if so, continuing to operate the indoor range hood according to the current fan gear, and recording and storing the current fan gear as a history coordinate according to the current time, wherein the recording period is day; then entering the step 2-6; if Qm is less than Qx, go to step 2-8, if Qm is greater than Qd, go to step 2-9;
step 2-6, judging whether the value exceeding e% in the same time period in g continuous recording periods meets the requirement that Qm is in [ Qx, Qd ]; entering the step 2-7; if not, directly entering the step 2-7; in the step, g and e are preset constants;
step 2-7, finishing the adjustment, continuing monitoring after waiting for a second preset time t2, and then returning to the step 2-1;
2-8, judging whether the gear of a fan of the indoor range hood is maximum, if so, sending a maintenance prompting signal; if not, calculating the ratio of Qm/Qx, if the ratio of Qm/Qx is greater than q, increasing the gear of the fan of the indoor range hood by 1, waiting for a third preset time t3, and returning to the step 2-1; if the ratio of Qm/Qx is less than p, the gear of the fan of the indoor range hood is shifted up by 3, and the step 2-1 is returned after waiting for a third preset time t 3; if the ratio of Qm/Qx is more than or equal to p and less than or equal to q, the gear of the fan of the indoor range hood is increased by 2, and the step 2-1 is returned after waiting for a third preset time t 3; in the step, p and q are preset constants, and p is smaller than q;
step 2-9, judging whether the gear of a fan of the indoor range hood is minimum, if so, increasing the target air volume range value, and then returning to the step 2-1; if not, calculating the ratio of Qm/Qd, if the ratio of Qm/Qd is greater than j, reducing the gear of the fan of the indoor range hood by 1, waiting for a third preset time t3, and returning to the step 2-1; if the ratio of Qm/Qd is less than k, the gear of the fan of the indoor range hood is lowered by 3, and the step 2-1 is returned after waiting for a third preset time t 3; if the ratio of Qm/Qx is larger than or equal to j and smaller than or equal to k, the gear of the fan of the indoor range hood is lowered by 2, and the step 2-1 is returned after waiting for a third preset time t 3; in this step, j and k are preset constants, and j is smaller than k.
Compared with the prior art, the invention has the advantages that:
1. the two methods provided by the invention can completely and independently operate under the condition that the indoor range hood is off-line, and can not completely depend on an outdoor main fan system, so that the problems of low speed and high efficiency of fan gear adjustment are solved;
2. can combine the actual behavior in later stage to predetermine the fan gear and update, can more satisfy actual demand.
Drawings
Fig. 1 is a schematic diagram of a centralized smoke exhaust system of a building in an embodiment of the invention.
Fig. 2 is a flowchart of a first method according to an embodiment of the present invention.
FIG. 3 is a flowchart of a second method according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The centralized smoke exhaust system for the building shown in fig. 1 comprises M indoor smoke exhaust ventilators 11 and … … 1M arranged in kitchens of residents on different floors, wherein M is a natural number; the public flue 2 is arranged inside the building, and the outdoor main fan system 3 is arranged on the top layer of the building; the air outlets of the M indoor smoke exhaust ventilators are communicated with a common flue through indoor air outlet branch pipes 5, an electric check valve 4 is installed in each indoor air outlet branch pipe of each floor, and the M indoor smoke exhaust ventilators are in communication connection with an outdoor main fan system; the electric check valves on the indoor air outlet branch pipes of different floors respectively comprise metal valve plates 41 and electromagnetic chucks 42 capable of adsorbing metal valve plates so as to enable the metal valve plates to be completely opened, and the force of the electromagnetic chucks for adsorbing the metal valve plates is controlled by PWM signals transmitted to the electromagnetic chucks by the indoor range hoods of the corresponding floors; a relational expression between the actual air volume of each indoor range hood and the duty ratio of a PWM signal transmitted to the electromagnetic chuck is preserved in advance, or a relational expression between the actual air volume and fan rotating speed information under different fan gears is preserved in each indoor range hood in advance;
the preset fan gear of the indoor range hood is updated by any one of the following two methods:
the first method comprises the following steps, as shown in fig. 2:
step 1-1, after receiving a starting signal, reading a preset fan gear of the indoor range hood, and operating according to the preset fan gear; the initial value of the preset fan gear can be preset, and the later stage is dynamically updated according to the actual condition; when the indoor range hood receives the fan gear adjusting signal, the indoor range hood operates according to the adjusted fan gear; meanwhile, reading a target air volume range value corresponding to an operating fan gear by the indoor range hood, and setting the target air volume range value corresponding to the operating fan gear as [ Qx, Qd ]; target air volume range values corresponding to different fan gears are stored in each indoor range hood in advance;
1-2, waiting for a first preset time t1, and allowing the indoor range hood to operate stably;
step 1-3, controlling the electromagnetic chuck to work by adopting a PWM signal with a preset duty ratio;
step 1-4, judging whether the metal valve plate touches the electromagnetic chuck, if so, restoring the indoor range hood to the operation of a preset fan gear, and turning to the step 1-5; if not, turning to the step 1-9;
step 1-5, reducing or increasing the duty ratio of the PWM signal until the metal valve plate is just sucked by the electromagnetic chuck, recording the duty ratio of the current PWM signal, inquiring a relation between the actual air quantity of the indoor range hood and the duty ratio of the PWM signal for controlling the electromagnetic chuck, calculating and obtaining the current actual air quantity value of the indoor range hood, recording the current actual air quantity value as Qm, and then entering the step 1-6;
step 1-6, judging whether Qm is in [ Qx, Qd ], if so, recording and storing the duty ratio of the current PWM signal by taking the current time as a process coordinate, wherein the recording period is day; meanwhile, recording and storing the current running fan gear as a history coordinate according to the current time, wherein the recording period is day, and then entering the step 1-7; if not, increasing or decreasing the value of the preset fan gear by one grade, and then returning to the step 1-5;
step 1-7, judging whether the value exceeding e% in the same time period in g continuous recording periods meets the requirement that Qm is in [ Qx, Qd ], if so, updating the preset duty ratio of the PWM signal, wherein the updated preset duty ratio of the PWM signal is the duty ratio of the current PWM signal recorded and stored in the step 1-6; updating the preset fan gear, wherein the updated preset fan gear is the fan gear recorded and saved in the step 1-6, and entering the step 1-8; if not, directly entering the step 1-8; in the step, g and e are preset constants, and according to the actual conditions of the centralized smoke exhaust systems of different buildings, g and e can be obtained through experimental means in the experimental stage and are stored in the indoor range hood in advance;
step 1-8, finishing the adjustment, continuing monitoring after waiting for a second preset time t2, and then returning to the step 1-1;
step 1-9, judging whether the duty ratio of the PWM signal reaches the maximum value 1, if not, increasing the duty ratio of the PWM signal, and returning to the step 1-4; if yes, entering the step 1-8;
step 1-8, judging whether the gear of a fan of an indoor range hood is maximum, if so, sending a maintenance prompting signal; if not, recording the current fan gear, temporarily increasing the fan gear to assist in starting, and returning to the step 1-4.
The second method comprises the following specific steps, which are shown in fig. 3;
step 2-1, after receiving a starting signal, the indoor range hood reads a preset fan gear and operates according to the preset fan gear; when the indoor range hood receives the fan gear adjusting signal, the indoor range hood operates according to the adjusted fan gear; meanwhile, reading a target air volume range value corresponding to an operating fan gear by the indoor range hood, and setting the target air volume range value corresponding to the operating fan gear as [ Qx, Qd ];
2-2, waiting for a first preset time t1, and allowing the indoor range hood to operate stably;
step 2-3, obtaining fan rotating speed information of the indoor range hood, and recording the fan rotating speed information as ni;
step 2-4, obtaining a relational expression between actual air volume and fan rotating speed information under corresponding fan gears, calculating and obtaining the current actual air volume value of the indoor range hood, recording the current actual air volume value as Qm, and then entering step 2-5;
step 2-5, judging whether Qm is in [ Qx, Qd ], if so, continuing to operate the indoor range hood according to the current fan gear, and recording and storing the current fan gear as a history coordinate according to the current time, wherein the recording period is day; then entering the step 2-6; if Qm is less than Qx, go to step 2-8, if Qm is greater than Qd, go to step 2-9;
step 2-6, judging whether the value exceeding e% in the same time period in g continuous recording periods meets the requirement that Qm is in [ Qx, Qd ]; entering the step 2-7; if not, directly entering the step 2-7; in the step, g and e are preset constants;
step 2-7, finishing the adjustment, continuing monitoring after waiting for a second preset time t2, and then returning to the step 2-1;
2-8, judging whether the gear of a fan of the indoor range hood is maximum, if so, sending a maintenance prompting signal; if not, calculating the ratio of Qm/Qx, if the ratio of Qm/Qx is greater than q, increasing the gear of the fan of the indoor range hood by 1, waiting for a third preset time t3, and returning to the step 2-1; if the ratio of Qm/Qx is less than p, the gear of the fan of the indoor range hood is shifted up by 3, and the step 2-1 is returned after waiting for a third preset time t 3; if the ratio of Qm/Qx is more than or equal to p and less than or equal to q, the gear of the fan of the indoor range hood is increased by 2, and the step 2-1 is returned after waiting for a third preset time t 3; in the step, p and q are preset constants, and p is smaller than q; according to the actual conditions of the centralized smoke exhaust systems of different buildings, g and e can be obtained through experimental means in the experimental stage and are stored in the indoor range hood in advance;
step 2-9, judging whether the gear of a fan of the indoor range hood is minimum, if so, increasing the target air volume range value, and then returning to the step 2-1; if not, calculating the ratio of Qm/Qd, if the ratio of Qm/Qd is greater than j, reducing the gear of the fan of the indoor range hood by 1, waiting for a third preset time t3, and returning to the step 2-1; if the ratio of Qm/Qd is less than k, the gear of the fan of the indoor range hood is lowered by 3, and the step 2-1 is returned after waiting for a third preset time t 3; if the ratio of Qm/Qx is larger than or equal to j and smaller than or equal to k, the gear of the fan of the indoor range hood is lowered by 2, and the step 2-1 is returned after waiting for a third preset time t 3; in the step, j and k are preset constants, and j is smaller than k; according to the actual conditions of the centralized smoke exhaust systems of different buildings, j less than k can be obtained through experimental means in the experimental stage and is pre-stored in the indoor smoke exhaust ventilator.
Claims (1)
1. A method for updating preset gears of indoor range hoods in a centralized building smoke exhaust system is disclosed, wherein the centralized building smoke exhaust system comprises M indoor range hoods arranged in kitchens of residents on different floors, and 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 air outlets of the M indoor smoke exhaust ventilators are communicated with a common flue through indoor air outlet branch pipes, and electric check valves are arranged on the indoor air outlet branch pipes; m indoor smoke exhaust ventilators are in communication connection with an outdoor main fan system; the method is characterized in that: the preset fan gear of the indoor range hood is updated by any one of the following two methods:
the first method,
The electric check valves on the indoor air outlet branch pipes on different floors respectively comprise metal valve plates and electromagnetic chucks capable of adsorbing the metal valve plates so as to enable the metal valve plates to be completely opened, and the force of the electromagnetic chucks for adsorbing the metal valve plates is controlled by PWM signals transmitted to the electromagnetic chucks by the indoor range hoods on the corresponding floors; the method comprises the following steps that a relational expression between the actual air volume of each indoor range hood and the duty ratio of a PWM signal transmitted to an electromagnetic chuck is preserved in advance, and the method specifically comprises the following steps:
step 1-1, after receiving a starting signal, reading a preset fan gear of the indoor range hood, and operating according to the preset fan gear; when the indoor range hood receives the fan gear adjusting signal, the indoor range hood operates according to the adjusted fan gear; meanwhile, reading a target air volume range value corresponding to an operating fan gear by the indoor range hood, and setting the target air volume range value corresponding to the operating fan gear as [ Qx, Qd ];
1-2, waiting for a first preset time t1, and allowing the indoor range hood to operate stably;
step 1-3, controlling the electromagnetic chuck to work by adopting a PWM signal with a preset duty ratio;
step 1-4, judging whether the metal valve plate touches the electromagnetic chuck, if so, restoring the indoor range hood to the operation of a preset fan gear, and turning to the step 1-5; if not, turning to the step 1-9;
step 1-5, reducing or increasing the duty ratio of the PWM signal until the metal valve plate is just sucked by the electromagnetic chuck, recording the duty ratio of the current PWM signal, inquiring a relation between the actual air quantity of the indoor range hood and the duty ratio of the PWM signal for controlling the electromagnetic chuck, calculating and obtaining the current actual air quantity value of the indoor range hood, recording the current actual air quantity value as Qm, and then entering the step 1-6;
step 1-6, judging whether Qm is in [ Qx, Qd ], if so, recording and storing the duty ratio of the current PWM signal by taking the current time as a process coordinate, wherein the recording period is day; meanwhile, recording and storing the current running fan gear as a history coordinate according to the current time, wherein the recording period is day, and then entering the step 1-7; if not, increasing or decreasing the value of the preset fan gear by one grade, and then returning to the step 1-5;
step 1-7, judging whether the value exceeding e% in the same time period in g continuous recording periods meets the requirement that Qm is in [ Qx, Qd ], if so, updating the preset duty ratio of the PWM signal, wherein the updated preset duty ratio of the PWM signal is the duty ratio of the current PWM signal recorded and stored in the step 1-6; updating the preset fan gear, wherein the updated preset fan gear is the fan gear recorded and saved in the step 1-6, and entering the step 1-8; if not, directly entering the step 1-8; in the step, g and e are preset constants;
step 1-8, finishing the adjustment, continuing monitoring after waiting for a second preset time t2, and then returning to the step 1-1;
step 1-9, judging whether the duty ratio of the PWM signal reaches the maximum value 1, if not, increasing the duty ratio of the PWM signal, and returning to the step 1-4; if yes, entering the step 1-8;
step 1-8, judging whether the gear of a fan of an indoor range hood is maximum, if so, sending a maintenance prompting signal; if not, recording the current fan gear, temporarily increasing the fan gear to assist in starting, and returning to the step 1-4.
The second method,
The method comprises the following steps that a relational expression between actual air volume and fan rotating speed information under different fan gears is prestored in each indoor range hood, and the specific steps comprise;
step 2-1, after receiving a starting signal, the indoor range hood reads a preset fan gear and operates according to the preset fan gear; when the indoor range hood receives the fan gear adjusting signal, the indoor range hood operates according to the adjusted fan gear; meanwhile, reading a target air volume range value corresponding to an operating fan gear by the indoor range hood, and setting the target air volume range value corresponding to the operating fan gear as [ Qx, Qd ];
2-2, waiting for a first preset time t1, and allowing the indoor range hood to operate stably;
step 2-3, obtaining fan rotating speed information of the indoor range hood, and recording the fan rotating speed information as ni;
step 2-4, obtaining a relational expression between actual air volume and fan rotating speed information under corresponding fan gears, calculating and obtaining the current actual air volume value of the indoor range hood, recording the current actual air volume value as Qm, and then entering step 2-5;
step 2-5, judging whether Qm is in [ Qx, Qd ], if so, continuing to operate the indoor range hood according to the current fan gear, and recording and storing the current fan gear as a history coordinate according to the current time, wherein the recording period is day; then entering the step 2-6; if not, entering an adjusting stage, wherein the adjusting stage comprises two conditions, if Qm is less than Qx, entering a step 2-8, and if Qm is more than Qd, entering a step 2-9;
step 2-6, judging whether the value exceeding e% in the same time period in g continuous recording periods meets the requirement that Qm is in [ Qx, Qd ]; entering the step 2-7; if not, directly entering the step 2-7; in the step, g and e are preset constants;
step 2-7, finishing the adjustment, continuing monitoring after waiting for a second preset time t2, and then returning to the step 2-1;
2-8, judging whether the gear of a fan of the indoor range hood is maximum, if so, sending a maintenance prompting signal; if not, calculating the ratio of Qm/Qx, if the ratio of Qm/Qx is greater than q, increasing the gear of the fan of the indoor range hood by 1, waiting for a third preset time t3, and returning to the step 2-1; if the ratio of Qm/Qx is less than p, the gear of the fan of the indoor range hood is shifted up by 3, and the step 2-1 is returned after waiting for a third preset time t 3; if the ratio of Qm/Qx is more than or equal to p and less than or equal to q, the gear of the fan of the indoor range hood is increased by 2, and the step 2-1 is returned after waiting for a third preset time t 3; in the step, p and q are preset constants, and p is smaller than q;
step 2-9, judging whether the gear of a fan of the indoor range hood is minimum, if so, increasing the target air volume range value, and then returning to the step 2-1; if not, calculating the ratio of Qm/Qd, if the ratio of Qm/Qd is greater than j, reducing the gear of the fan of the indoor range hood by 1, waiting for a third preset time t3, and returning to the step 2-1; if the ratio of Qm/Qd is less than k, the gear of the fan of the indoor range hood is lowered by 3, and the step 2-1 is returned after waiting for a third preset time t 3; if the ratio of Qm/Qx is larger than or equal to j and smaller than or equal to k, the gear of the fan of the indoor range hood is lowered by 2, and the step 2-1 is returned after waiting for a third preset time t 3; in this step, j and k are preset constants, and j is smaller than k.
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| CN114183785A (en) * | 2021-10-27 | 2022-03-15 | 宁波方太厨具有限公司 | Operation control method of compatible building centralized smoke exhaust system |
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