CN111623388A - Self-adaptive control method for flow of range hood - Google Patents
Self-adaptive control method for flow of range hood Download PDFInfo
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- CN111623388A CN111623388A CN201910151605.3A CN201910151605A CN111623388A CN 111623388 A CN111623388 A CN 111623388A CN 201910151605 A CN201910151605 A CN 201910151605A CN 111623388 A CN111623388 A CN 111623388A
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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
A self-adaptive control method for the flow of oil soot exhauster for kitchen ventilator features that the air outlets of each oil soot exhauster are communicated with a common flue via respective fume tube, and features that a single-machine mode is used, the current working state of oil soot exhauster is judged by use of rotation speed, if it is high, the power-flow relation is used for calculation, if it is low, the rotation speed is detected by use of current gear or counter-electromotive force, and the one-to-one relation between rotation speed and flow at same gear is used for calculating the current actual flow, calculating the difference between target flow and target flow, and selecting one or more gears to regulate flow. Compared with the prior art, the flow self-adaptive control method is simple in control method and higher in control precision. And the single machine mode setting time judges peak or off-peak time in advance, so that the adjustment times can be reduced.
Description
Technical Field
The invention relates to a flow self-adaptive control method, in particular to a flow self-adaptive control method of a range hood.
Background
At present, floors of newly-built floors in cities are generally higher and higher, and the outlet of a high-rise common flue is generally arranged at the top of the floors, so that the outlet resistance of a system can be influenced by the switching condition of a range hood of each user, and the smoke exhaust condition of users at the bottom is severe. In recent years, a user side angle-adjustable valve is combined with a roof flue outlet main fan to intensively filter and discharge, and the roof main fan is applied to some finish-finished buildings in recent years, the roof main fan performs frequency conversion and valve plate preset angle to achieve flow distribution for users with different opening rates, although the method can solve the problem of bad smoke exhaust of the users at the bottom to a certain extent, and effectively controls the flow rate and noise of the whole flue system, the method needs to adjust and adapt according to different building flues, the same program cannot self-adapt to a plurality of buildings, the calculated amount before installation is extremely large, the test fluctuation of a flow rate sensor or a pressure sensor is large in the high-resistance and low-flow state, and data cannot be directly applied and judged.
Tests show that the velocity distribution of the front flow field and the rear flow field of the valve plate under the state of small angle and high resistance is extremely uneven according to the CFD analysis and comparison of the opening state of the valve plate, and the actual flow cannot be accurately represented if the flow obtained by single-point measurement or measurement of a few points by using a differential pressure or flow velocity sensor and then multiplying the average value by a correction coefficient. In addition, the range hood has small flow rate and small change of motor torque load in a high-resistance state, so that the change of the rotating speed is small, the judgment is not accurate only by using the rotating speed-flow function relationship fitting in the interval, the adjustment back and forth is easy to cause, and users feel that the air volume and the sound are not large or small, thereby influencing the user experience.
Disclosure of Invention
The invention aims to solve the technical problem of providing a self-adaptive control method for the flow of the range hood, which has high flow control precision, aiming at the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the self-adaptive control method for the flow of the range hood comprises the range hoods which are arranged on different floors, wherein an air outlet of each range hood is communicated with a common flue through a smoke pipe of each range hood, and the self-adaptive control method is characterized by comprising the following steps of:
firstly, when any indoor unit user starts up, firstly, the indoor unit user operates at a default gear i or a frequency;
secondly, acquiring the current time;
judging whether the current cooking peak is a morning, noon and evening peak according to the time, starting a preset angle and target flow of the morning, noon and evening peak if the current cooking peak is the morning, noon and evening peak, starting a preset angle and target flow of an idle time period if the current cooking peak is the morning, noon and evening peak, and acquiring a target flow QL and a preset gear from a storage unit of the range hood;
fourthly, presetting a gear i to operate;
acquiring the current rotating speed ni through a back electromotive force technology or a rotating speed detection module;
sixthly, judging whether the current rotating speed ni exceeds the preset rotating speed na or not,
if the current power or the current exceeds the current threshold value, the current power or the current is obtained, the current power is calculated, the power-flow function coefficient of the current gear is obtained, and the current actual flow Qm is calculated;
if not, inquiring the current operating gear i and the corresponding multiple term function coefficient;
calculating the current actual flow Qm by a functional expression and a rotating speed;
sixthly, judging whether the actual flow Qm is in the target range [ Qx, Qd ];
if the current angle is within the target range, continuously monitoring S +1 in a state, if S is larger than or equal to S1, writing the current angle into a storage and updating preset angle, resetting S, and if S is smaller than S1, continuously detecting, wherein S1 is a preset state threshold value;
if the target range is not within the target range, judging whether the target range is larger or smaller;
and then judging whether the current gear or the rotating speed is an extreme value,
if the gear is an extreme value gear, the current state is kept to operate;
if the current flow Qm is not an extreme value gear, calculating the ratio of the current flow Qm to a target flow lower limit Qx or an upper limit Qd;
eighthly, regulating the gear value of at least one gear according to the corresponding ratio limit value;
ninthly, adjusting a driving motor;
after waiting for delta t time, the adjustment is stable;
2. The adaptive flow control method for the range hood according to claim 1, characterized in that: in the above-described step (iv), the current actual flow rate Qm is calculated by interpolation using the power at the previously measured point.
Preferably, in the steps (c) and (b), when the current gear or the rotating speed is not the lowest value, the gear 1, the gear 2 and the gear 3 are respectively adjusted downward according to the corresponding proportional limit value partitions, and when the current gear or the rotating speed is not the highest value, the gear 1, the gear 2 and the gear 3 are respectively adjusted upward according to the corresponding proportional limit value partitions.
In order to improve the oil fume suction effect, an outdoor main machine is arranged at the outlet of the public flue.
The common flue can adopt various structural forms, and preferably, the common flue is a straight flue or a stepped flue.
Compared with the prior art, the invention has the advantages that: the flow self-adaptive control method of the range hood firstly utilizes the rotating speed to judge the current working state of the range hood (the rotating speed change in the high resistance state is very small, the power change is obvious), if the working state is high resistance, the power-flow relation is used for calculation, if the working state is low, the rotating speed is detected by the rotating speed in the current gear or the counter electromotive force is used for calculating the rotating speed, and then the rotating speed-flow function relation is used for calculation, so that the control precision is higher. The control method adopts a single machine mode, and the current conditions of other range hoods cannot be acquired when the range hood is in operation, so that the time is set to judge peak or off-peak time in advance, and the adjustment times can be reduced.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an indoor range hood according to an embodiment of the present invention;
FIG. 3 is a flow chart of a flow adaptive control method according to an embodiment of the present invention;
FIG. 4 is a schematic view of another flue structure according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 and fig. 2, the flue system of the high-rise building of this embodiment includes the range hoods 1 installed on different floors, the air outlet of each range hood 1 is communicated with the common flue 3 through the respective smoke tube 2, the fire damper 7 is installed at the outlet of the smoke tube 2, the outdoor host 4 is installed at the outlet of the common flue 3, and the common flue 3 may be a straight flue (as shown in fig. 1) or a stepped flue (as shown in fig. 4). Each smoke tube 2 is internally provided with a check valve plate 5. An outdoor main unit 4 is installed at the outlet of the common flue 3, and a purification device 6 is installed at the front end of the outdoor main unit 4.
The flow self-adaptive control method of the range hood in the embodiment is a single-machine operation mode, firstly, the current working state of the range hood is judged by using the rotating speed (the rotating speed in the high resistance state is small in change and the power change is obvious), if the rotating speed is high resistance, the power-flow relation is used for calculation, if the rotating speed is low in rotation speed, the rotating speed is detected or calculated by using the rotating speed in the current gear or the counter electromotive force, then, the current actual flow is calculated by using the one-to-one correspondence relation between the rotating speed and the flow in the same gear, the difference between the current actual flow and the target flow is calculated, one or more gears are selected.
The ith gear power-flow relation is as follows: n is a radical ofi＝Ai+BiQ+CiQ2+DiQ3Wherein A \ B \ C \ D is the coefficient of the current gear.
The flow-rotation speed relationship of the ith gear is as follows: q (i, n) ═ Ei+Fin+Gin2+Hin3。
As shown in fig. 3, the flow self-adaptive control method of the range hood comprises the following steps:
firstly, when any indoor unit user starts up, firstly, the indoor unit user operates at a default gear i or a frequency;
secondly, acquiring the current time;
judging whether the current cooking peak is a morning, noon and evening peak according to the time, starting a preset angle and target flow of the morning, noon and evening peak if the current cooking peak is the morning, noon and evening peak, starting a preset angle and target flow of an idle time period if the current cooking peak is the morning, noon and evening peak, and acquiring a target flow QL and a preset gear from a storage unit of the range hood;
fourthly, presetting a gear i to operate;
acquiring the current rotating speed ni through a back electromotive force technology or a rotating speed detection module;
sixthly, judging whether the current rotating speed ni exceeds the preset rotating speed na or not,
if the current power or the current exceeds the current threshold value, the current power or the current is obtained, the current power is calculated, the power-flow function coefficient of the current gear is obtained, and the current actual flow Qm is calculated;
if not, inquiring the current operating gear i and the corresponding multiple term function coefficient;
calculating the current actual flow Qm by a functional expression and a rotating speed;
sixthly, judging whether the actual flow Qm is in the target range [ Qx, Qd ];
if the current angle is within the target range, continuously monitoring S +1 in a state, if S is larger than or equal to S1, writing the current angle into a storage and updating preset angle, resetting S, and if S is smaller than S1, continuously detecting, wherein S1 is a preset state threshold value;
if the target range is not within the target range, judging whether the target range is larger or smaller;
and then judging whether the current gear or the rotating speed is an extreme value,
if the gear is an extreme value gear, the current state is kept to operate;
if the current flow Qm is not an extreme value gear, calculating the ratio of the current flow Qm to a target flow lower limit Qx or an upper limit Qd;
eighthly, regulating the gear value of at least one gear according to the corresponding ratio limit value;
ninthly, adjusting a driving motor;
after waiting for delta t time, the adjustment is stable;
In the fourth step, interpolation is performed using the power at the previously measured point to calculate the current actual flow rate Qm. And seventhly and eighthly, respectively reducing the gear 1, the gear 2 and the gear 3 according to corresponding ratio limit value subareas when the current gear or the rotating speed is not the lowest value, and respectively increasing the gear 1, the gear 2 and the gear 3 according to corresponding ratio limit value subareas when the current gear or the rotating speed is not the highest value.
Claims (5)
1. A self-adaptive control method for flow of a range hood comprises the range hoods (1) installed on different floors, wherein an air outlet of each range hood (1) is communicated with a common flue (3) through a smoke pipe (2) of each range hood, and is characterized by comprising the following steps:
firstly, when any indoor unit user starts up, firstly, the indoor unit user operates at a default gear i or a frequency;
secondly, acquiring the current time;
judging whether the current cooking peak is a morning, noon and evening peak according to the time, starting a preset angle and target flow of the morning, noon and evening peak if the current cooking peak is the morning, noon and evening peak, starting a preset angle and target flow of an idle time period if the current cooking peak is the morning, noon and evening peak, and acquiring a target flow QL and a preset gear from a storage unit of the range hood;
fourthly, presetting a gear i to operate;
acquiring the current rotating speed ni through a back electromotive force technology or a rotating speed detection module;
sixthly, judging whether the current rotating speed ni exceeds the preset rotating speed na or not,
if the current power or the current exceeds the current threshold value, the current power or the current is obtained, the current power is calculated, the power-flow function coefficient of the current gear is obtained, and the current actual flow Qm is calculated;
if not, inquiring the current operating gear i and the corresponding multiple term function coefficient;
calculating the current actual flow Qm by a functional expression and a rotating speed;
sixthly, judging whether the actual flow Qm is in the target range [ Qx, Qd ];
if the current angle is within the target range, continuously monitoring S +1 in a state, if S is larger than or equal to S1, writing the current angle into a storage and updating preset angle, resetting S, and if S is smaller than S1, continuously detecting, wherein S1 is a preset state threshold value;
if the target range is not within the target range, judging whether the target range is larger or smaller;
and then judging whether the current gear or the rotating speed is an extreme value,
if the gear is an extreme value gear, the current state is kept to operate;
if the current flow Qm is not an extreme value gear, calculating the ratio of the current flow Qm to a target flow lower limit Qx or an upper limit Qd;
eighthly, regulating the gear value of at least one gear according to the corresponding ratio limit value;
ninthly, adjusting a driving motor;
after waiting for delta t time, the adjustment is stable;
2. The adaptive flow control method for the range hood according to claim 1, characterized in that: in the above-described step (iv), the current actual flow rate Qm is calculated by interpolation using the power at the previously measured point.
3. The adaptive flow control method for the range hood according to claim 1, characterized in that: and in the steps (c) and (b), respectively reducing the gear 1, the gear 2 and the gear 3 according to corresponding ratio limit value subareas when the current gear or the rotating speed is not the lowest value, and respectively increasing the gear 1, the gear 2 and the gear 3 according to corresponding ratio limit value subareas when the current gear or the rotating speed is not the highest value.
4. The adaptive flow control method for the range hood according to claim 1, characterized in that: an outdoor main machine (4) is arranged at the outlet of the common flue (3).
5. The adaptive control method for the flow of the range hood according to any one of claims 1 to 4, characterized in that: the common flue (3) is a straight cylinder flue or a stepped flue.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910151605.3A CN111623388B (en) | 2019-02-28 | 2019-02-28 | Self-adaptive control method for flow of range hood |
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| CN201910151605.3A CN111623388B (en) | 2019-02-28 | 2019-02-28 | Self-adaptive control method for flow of range hood |
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| CN111623388B CN111623388B (en) | 2022-02-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124441A (en) * | 2021-05-31 | 2021-07-16 | 华帝股份有限公司 | Method for obtaining gear of range hood, terminal, host and smoke collection and discharge fan system |
| CN114034064A (en) * | 2021-11-08 | 2022-02-11 | 杭州老板电器股份有限公司 | Control method and system of range hood |
| WO2024088013A1 (en) * | 2022-10-27 | 2024-05-02 | 广东澄一科技有限公司 | Range hood |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013099929A1 (en) * | 2011-12-28 | 2013-07-04 | 富士工業株式会社 | Range hood |
| WO2013156922A2 (en) * | 2012-04-17 | 2013-10-24 | Indesit Company S.P.A. | Hood and method of operation thereof |
| CN103644583A (en) * | 2013-09-12 | 2014-03-19 | 中山华帝燃具股份有限公司 | Control device capable of monitoring running state of range hood in real time and control method thereof |
| CN104344445A (en) * | 2013-08-08 | 2015-02-11 | 丁德厚 | One-key control intelligent extractor hood |
| CN105629814A (en) * | 2014-10-29 | 2016-06-01 | 中山大洋电机股份有限公司 | Constant-air-volume control method of electrical equipment having ventilation or air supply function |
| CN106287889A (en) * | 2016-09-30 | 2017-01-04 | 宁波方太厨具有限公司 | The rotation speed of fan Automatic adjustment method of range hood and realize the adjusting means of the method |
| CN206207506U (en) * | 2016-07-26 | 2017-05-31 | 华帝股份有限公司 | Range hood and constant air volume adjusting system thereof |
| CN107655048A (en) * | 2016-07-26 | 2018-02-02 | 华帝股份有限公司 | Range hood and constant air volume adjusting method and system thereof |
| CN207278957U (en) * | 2017-08-19 | 2018-04-27 | 中山市林博电器有限公司 | A kind of check-valves of the self-adjustable smoke exhaust ventilator of smoke outlet |
-
2019
- 2019-02-28 CN CN201910151605.3A patent/CN111623388B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013099929A1 (en) * | 2011-12-28 | 2013-07-04 | 富士工業株式会社 | Range hood |
| WO2013156922A2 (en) * | 2012-04-17 | 2013-10-24 | Indesit Company S.P.A. | Hood and method of operation thereof |
| CN104344445A (en) * | 2013-08-08 | 2015-02-11 | 丁德厚 | One-key control intelligent extractor hood |
| CN103644583A (en) * | 2013-09-12 | 2014-03-19 | 中山华帝燃具股份有限公司 | Control device capable of monitoring running state of range hood in real time and control method thereof |
| CN105629814A (en) * | 2014-10-29 | 2016-06-01 | 中山大洋电机股份有限公司 | Constant-air-volume control method of electrical equipment having ventilation or air supply function |
| CN206207506U (en) * | 2016-07-26 | 2017-05-31 | 华帝股份有限公司 | Range hood and constant air volume adjusting system thereof |
| CN107655048A (en) * | 2016-07-26 | 2018-02-02 | 华帝股份有限公司 | Range hood and constant air volume adjusting method and system thereof |
| CN106287889A (en) * | 2016-09-30 | 2017-01-04 | 宁波方太厨具有限公司 | The rotation speed of fan Automatic adjustment method of range hood and realize the adjusting means of the method |
| CN207278957U (en) * | 2017-08-19 | 2018-04-27 | 中山市林博电器有限公司 | A kind of check-valves of the self-adjustable smoke exhaust ventilator of smoke outlet |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124441A (en) * | 2021-05-31 | 2021-07-16 | 华帝股份有限公司 | Method for obtaining gear of range hood, terminal, host and smoke collection and discharge fan system |
| CN113124441B (en) * | 2021-05-31 | 2022-10-04 | 华帝股份有限公司 | Method for obtaining gear of range hood, terminal, host and smoke collection and discharge fan system |
| CN114034064A (en) * | 2021-11-08 | 2022-02-11 | 杭州老板电器股份有限公司 | Control method and system of range hood |
| CN114034064B (en) * | 2021-11-08 | 2023-12-05 | 杭州老板电器股份有限公司 | Control method and system of range hood |
| WO2024088013A1 (en) * | 2022-10-27 | 2024-05-02 | 广东澄一科技有限公司 | Range hood |
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