CN113108330B - Method and device for adjusting range hood - Google Patents
Method and device for adjusting range hood Download PDFInfo
- Publication number
- CN113108330B CN113108330B CN202010156649.8A CN202010156649A CN113108330B CN 113108330 B CN113108330 B CN 113108330B CN 202010156649 A CN202010156649 A CN 202010156649A CN 113108330 B CN113108330 B CN 113108330B
- Authority
- CN
- China
- Prior art keywords
- fan
- value
- actual
- wind
- air volume
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
Abstract
The invention discloses a method and a device for adjusting a range hood, wherein the range hood comprises a fan, and the method for adjusting the range hood comprises the following steps: collecting the operating parameters of the fan, and calculating to obtain an actual value of the air volume of the fan, an actual value of the air pressure of the fan and the pressure of a common flue; determining a target wind pressure interval in which the actual value of the wind pressure of the fan is positioned and a corresponding set value of the wind volume, and if the actual value of the wind volume of the fan exceeds the set range of the set value of the wind volume, determining the set value of the wind volume as the set value of the target wind volume; and calculating to obtain a target adjusting parameter of the fan according to the actual value of the air quantity of the fan and the set value of the target air quantity, and adjusting the fan. According to the invention, the stage air volume control is realized by controlling and adjusting the parameters of the range hood through the fan operation parameter feedback sensing, enough rotating speed can be output for the range hood with poor working condition, effective air volume is not reduced, the rotating speed can be reduced for the range hood with good working condition, the smoking effect is ensured, meanwhile, the noise is reduced, the user experience is improved, and the stage constant air volume is realized.
Description
Technical Field
The invention relates to a smoke treatment technology, in particular to a method and a device for adjusting a range hood.
Background
The range hood is arranged on the upper part or the side part of the cooking range and is integrated with a fan. The working principle of the range hood is that a fan rotates at a high speed to form a negative pressure area in a certain space range above a stove, indoor oil fume is sucked into the range hood, the oil fume is purified and separated into oil drops and smoke, the oil drops are collected into an oil cup, and the smoke is discharged along a flue.
The range hood is provided with a plurality of gears, each gear corresponds to a set air volume, and the air volume of the range hood on the market at present under the nominal gear is an ideal value tested and set under laboratory conditions. In the actual use process, because the resistance of the smoke pipe and the pressure of the common flue exist, the actual effective air volume of the same product and the same gear under different use environments is different. If the pressure of the common flue is higher, the actual effective air volume is lower, the phenomena of oil smoke escape and no smoking can occur, and even the oil smoke of other users flows backwards. Therefore, the range hood operates at different gears, the air pressure is increased, and the air quantity is increased. However, the gear is switched, only by increasing the output power and the rotating speed of the motor, the increased air volume is far larger than the required effective air volume, the noise of a user is large, and the experience is poor; or the increased air volume is still not enough to meet the user demand, and the smoking effect is still not ideal, causing the complaint of the user.
Disclosure of Invention
The invention provides an adjusting method and device of a range hood, and aims to improve the smoking effect of the range hood.
The invention provides a method for adjusting a range hood, wherein the range hood comprises a fan, and the method comprises the following steps:
collecting the operating parameters of the fan, and calculating to obtain an actual value of the air volume of the fan, an actual value of the air pressure of the fan and the pressure of a common flue;
determining a target wind pressure interval where the actual fan wind pressure value is located and a corresponding wind volume set value, and if the actual fan wind volume value exceeds the set range of the wind volume set value, determining the wind volume set value as the target wind volume set value;
and calculating to obtain a target adjusting parameter of the fan according to the actual air quantity value of the fan and the target air quantity set value, and adjusting the fan.
Further, the operation parameters of the fan comprise actual frequency and operation power of the fan, and the target adjustment parameters of the fan comprise target frequency of the fan.
Further, gather the operating parameter of fan, calculate and obtain fan amount of wind actual value, fan wind pressure actual value and public flue pressure, include:
collecting the actual frequency f0 and the running power N0 of the fan;
calculating saidThe actual rotating speed n0 of the fan, the actual value Q0 of the air volume of the fan is calculated according to a formula (2), and the actual value P of the air pressure of the fan is calculated according to a formula (3)T0Calculating the common flue pressure P0 according to equation (4);
n＝μ(f) (1)；
Q＝G(n，N) (2)；
PT＝H(Q，n) (3)；
wherein xi is the resistance coefficient of the branch pipe of the cigarette machine, and A is the sectional area of the branch pipe of the cigarette machine.
Further, calculating a target adjusting parameter of the fan according to the actual value of the fan air volume and the target air volume set value, and adjusting the fan, including:
according to the actual value Q0 of the fan air volume and the set value Q of the target air volumesetCalculating the wind pressure requirement value P of the fan according to the formula (4)T1，PT1＝PT0+α(Q2 set-Q02)；
Calculating the required rotating speed n1 of the fan according to the formula (3), wherein n1 is H-1 Qset(PT1) And then calculating and adjusting the target frequency f1 of the fan according to the formula (1), wherein f1 is mu-1(n1)。
Further, the adjusting method further comprises: and if the actual value of the air volume of the fan is in the set range of the set value of the air volume or the fan is adjusted, restarting the process after a certain time length.
The invention also provides an adjusting device of a cigarette making machine, the cigarette making machine comprises a fan, and the adjusting device comprises:
the parameter acquisition module is used for acquiring the operating parameters of the fan and calculating to obtain an actual air volume value of the fan, an actual air pressure value of the fan and the pressure of a common flue;
the processing parameter module is used for determining a target wind pressure interval where the actual value of the wind pressure of the fan is located and a corresponding set value of the wind volume, and if the actual value of the wind volume of the fan exceeds the set range of the set value of the wind volume, determining the set value of the wind volume as the set value of the target wind volume;
and the adjusting parameter module is used for calculating a target adjusting parameter of the fan according to the actual air quantity value of the fan and the target air quantity set value and adjusting the fan.
Further, the operation parameters of the fan comprise the actual frequency and the operation power of the fan, and the target adjustment parameters of the fan comprise the target frequency of the fan.
Further, the acquisition parameter module comprises:
the collection unit is used for collecting the actual frequency f0 and the running power N0 of the fan;
a first arithmetic unit for calculating the actual speed n0 of the fan according to the formula (1), the actual wind quantity Q0 of the fan according to the formula (2), and the actual wind pressure P of the fan according to the formula (3)T0Calculating the common flue pressure P0 according to equation (4);
n＝μ(f) (1)；
Q＝G(n，N) (2)；
PT＝H(Q，n) (3)；
wherein xi is the resistance coefficient of the branch pipe of the cigarette machine, and A is the sectional area of the branch pipe of the cigarette machine.
Further, the adjusting parameter module comprises:
a second arithmetic unit for calculating the actual value Q0 of the fan air volume and the set value Q of the target air volumesetCalculating the wind pressure requirement value P of the fan according to the formula (4)T1，PT1＝PT0+α(Q2 set-Q02) (ii) a Calculating the required rotating speed n1 of the fan according to the formula (3), wherein n1 is H-1 Qset(PT1) And then calculating the target of the fan according to the formula (1)Frequency f1, f1 ═ μ-1(n1)；
And the adjusting unit is used for adjusting the frequency of the fan according to the target frequency f1 of the fan.
Further, the adjusting device further comprises: and the circulation module is used for restarting the process after a specific time length if the actual air volume value of the fan is within the set range of the air volume set value or the fan is regulated.
According to the invention, after the air volume is adjusted according to the air volume control program, enough rotating speed can be output for the range hood with poor working condition, effective air volume is not reduced in each air pressure interval, the rotating speed can be reduced for the range hood with good working condition, enough effective air volume is ensured in each air pressure interval, noise is reduced while smoking effect is maintained, user experience is improved, the air volume is adjusted in each air pressure interval to be within the set range of the air volume set value, constant air volume in the air pressure interval, namely, staged constant air volume, is realized, and the air volume in the air pressure interval is not influenced by external loads such as pressure change of a common flue. The stage constant air volume scheme considers more the influence of different air pressures of floors with different heights on the smoking effect of a cigarette machine, carries out stage optimization on the effective air volume in each air pressure interval, mainly solves the smoking effect aiming at low-level users such as (400, 600 Pa), does not have overhigh rotating speed noise, operates according to lower constant effective air volume (such as 10 +/-0.5 air volume), sets higher constant effective air volume (such as 12 +/-0.5 air volume) to operate aiming at high-level users such as [0, 400Pa, ensures that smoking is fast, reduces the air volume of the high-level users on the basis of ensuring the use of the users on each floor, reduces the noise, and simultaneously ensures the smoking effect of the low-level users.
Drawings
To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description, although being some specific embodiments of the present invention, can be extended and extended to other structures and drawings by those skilled in the art according to the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention, without making sure that these should be within the scope of the claims of the present invention.
FIG. 1 is a schematic illustration of a method of adjusting a cigarette making machine according to an embodiment of the present invention;
figure 2 is a schematic diagram of a method of adjusting a range hood provided by an embodiment of the present invention;
figure 3 is a schematic illustration of an intermediate load curve of a cigarette machine before optimization;
figure 4 is a schematic illustration of an optimized cigarette machine intermediate load curve;
figure 5 is a schematic view of an adjustment device for a range hood provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the basic idea disclosed and suggested by the embodiments of the present invention, fall within the scope of protection of the present invention.
Referring to fig. 1, a schematic diagram of an adjusting method of a cigarette making machine according to an embodiment of the present invention is shown. The cigarette making machine comprises a fan and an adjusting device for executing the adjusting method, wherein the adjusting device is realized in a software and/or hardware mode and is configured in the cigarette making machine for use.
The adjusting method provided by the embodiment comprises the following steps:
and S1, collecting the operation parameters of the fan, and calculating to obtain the actual value of the air volume of the fan, the actual value of the air pressure of the fan and the pressure of the common flue.
In this step, the fan operation parameters are the operation parameters of the fan at the current moment, and the selectable fan operation parameters at least include the actual frequency and the operation power of the fan. The frequency of the fan is related to the rotating speed of the fan, and the rotating speed and the power of the fan influence the air quantity of the fan, so that the actual value of the air quantity of the fan can be calculated according to the rotating speed and the power of the fan. The rotating speed and the air volume of the fan influence the total pressure of the fan, the total pressure of the fan is the air pressure of the fan, and therefore the actual value of the air pressure of the fan can be calculated according to the rotating speed and the actual value of the air volume of the fan. The total pressure and the air quantity of the fan are related to the pressure of the common flue, so that the pressure of the common flue can be calculated according to the actual value of the air pressure of the fan and the actual value of the air quantity of the fan.
It is understood that the operating parameters of the fan include other parameters, such as current parameters, etc., and only the parameters related to the air volume control program are described herein.
And S2, determining a target wind pressure interval where the actual wind pressure value of the fan is and a corresponding wind volume set value, and if the actual wind pressure value of the fan exceeds the set range of the wind volume set value, determining the wind volume set value as the target wind volume set value.
In this step, be provided with a plurality of adjacent wind pressure intervals in the adjusting device of cigarette machine, this a plurality of wind pressure interval's division is divided in combination with user's actual use scene. Different loads that use the floor are different, through detecting the discovery, the wind pressure of low floor is big, and the wind pressure of high floor is little, sets for the node in order to obtain a plurality of wind pressure intervals according to the floor height. After a plurality of wind pressure intervals are divided, the corresponding wind volume set value of each wind pressure interval is predetermined, and the range formed by the up-and-down floating error of the wind volume set value is the set range of the wind volume set value.
For example, 400Pa is used as a wind pressure division node, two wind pressure intervals are stored in the adjusting device, 0-400 Pa is a 1 st wind pressure interval, 400-600 Pa is a 2 nd wind pressure interval, a wind volume setting value corresponding to the 1 st wind pressure interval is 12, a wind volume setting value corresponding to the 2 nd wind pressure interval is 10, and a wind volume error is ± 0.5. Based on the above example, the specific implementation procedure of this step is:
step1, detecting a wind pressure interval to which a wind pressure actual value of a fan belongs after the wind pressure actual value of the fan is obtained by an adjusting device; if the wind pressure belongs to the 1 st wind pressure interval [0, 400], executing the step2, and if the wind pressure belongs to the 2 nd wind pressure interval (400, 600), executing the step 3;
step2, determining that the set value of the air quantity is 12 and the set range thereof is [11.5, 12.5], and detecting whether the actual value of the air quantity of the fan exceeds the set range of the set value of the air quantity; if yes, executing the step4, otherwise, returning to the step 1;
step3, determining the set value of the air quantity to be 10 and the set range thereof to be [9.5, 10.5], and detecting whether the actual value of the air quantity of the fan exceeds the set range of the set value of the air quantity; if yes, executing step4, otherwise, returning to execute step S1;
step4, determining the corresponding air volume set value as a target air volume set value,
and if the actual value of the wind pressure of the fan is 350Pa and the actual value of the wind volume of the fan is 11.8, returning to execute the step S1 after the steps.
And if the actual value of the wind pressure of the fan is 350Pa and the actual value of the wind quantity of the fan is 11.1 through calculation, determining that the set value of the target wind quantity is 12 after the steps are carried out.
And if the actual value of the wind pressure of the fan is 550Pa and the actual value of the wind volume of the fan is 10.4, returning to execute the step S1 after the steps.
And if the actual value of the wind pressure of the fan is 550Pa and the actual value of the wind quantity of the fan is 10.9 through calculation, determining that the set value of the target wind quantity is 10 after the steps.
It can be understood that the values of the wind pressure interval and the wind pressure setting value are examples, manufacturers can adjust the values according to different products and market areas used by the products, and when the same product is applied to different market areas, the parameters may be different. Not limited thereto.
And S3, calculating a target adjusting parameter of the fan according to the actual air volume value and the target air volume set value of the fan, and adjusting the fan.
In this embodiment, the actual value of the blower air volume and the target air volume set value at the current time are known, the required value of the blower air volume required under the common flue pressure at the current time can be calculated according to the values, and then the target adjusting parameter of the blower at the current time is determined through reverse operation, so as to adjust the operation parameter of the blower, the adjusted blower air pressure can be in the target air pressure interval, the blower air volume can be in the setting range of the air volume set value corresponding to the target air pressure interval, and the air volume in the target air pressure interval is not affected by external loads such as the common flue pressure. The target adjustment parameter of the selectable fan includes a target frequency of the fan.
In this embodiment, after carrying out air regulation according to the air volume control procedure, to relatively poor operating mode cigarette machine, can export sufficient rotational speed, guarantee that effective amount of wind does not reduce in every wind pressure interval, to better operating mode cigarette machine, can reduce the rotational speed, guarantee enough effective amount of wind in every wind pressure interval, when maintaining the smoking effect, the noise reduction, promote user experience, adjust the amount of wind in every wind pressure interval and make it be in the settlement within range of amount of wind setting value, realize the permanent amount of wind in the wind pressure interval and be the periodic constant amount of wind, the amount of wind is not influenced by external load such as public flue pressure variation in the wind pressure interval. The stage constant air volume scheme considers more the influence of different air pressures of floors with different heights on the smoking effect of a cigarette machine, carries out stage optimization on the effective air volume in each air pressure interval, mainly solves the smoking effect aiming at low-level users such as (400, 600 Pa), does not have overhigh rotating speed noise, operates according to lower constant effective air volume (such as 10 +/-0.5 air volume), sets higher constant effective air volume (such as 12 +/-0.5 air volume) to operate aiming at high-level users such as [0, 400Pa, ensures that smoking is fast, reduces the air volume of the high-level users on the basis of ensuring the use of the users on each floor, reduces the noise, and simultaneously ensures the smoking effect of the low-level users.
For example, on the basis of the above technical solution, as shown in fig. 2, the operation of step S1 may be selected, the operation parameters of the fan are collected, and the actual value of the air volume of the fan, the actual value of the air pressure of the fan, and the common flue pressure are obtained through calculation, which specifically include:
s11, collecting the actual frequency f0 and the running power N0 of the fan. And acquiring the actual frequency f0 and the actual power N0 of the fan at the current time t 0.
S12, calculating the actual rotating speed n0 of the fan according to the formula (1), calculating the actual air volume value Q0 of the fan according to the formula (2), and calculating the actual air pressure value P of the fan according to the formula (3)T0Calculating a common flue pressure P0 according to equation (4);
n＝μ(f) (1)；
Q＝G(n，N) (2)；
PT＝H(Q，n) (3)；
wherein xi is the resistance coefficient of the branch pipe of the cigarette machine, and A is the sectional area of the branch pipe of the cigarette machine.
In a mathematical model of a smoke machine, the rotating speed n and the frequency f of a fan are in a linear relation and have a functional relation shown in a formula (1); under the condition that the rotating speed N of the fan is determined, the functional relation between the air quantity Q of the fan and the power N of the fan meets the formula (2); the full pressure of the fan (namely the wind pressure P) can be known from the characteristic curve of the wind pressure P-wind quantity QT) The function relation of the fan rotation speed n and the wind quantity Q can be determined by fitting, and the function relation meets the formula (3); the difference between the full pressure at the outlet of the cigarette machine (i.e. the wind pressure of the fan) and the pressure P of the common flue is consumed on the branch pipes of the cigarette machine, and the equation is shown as the formula (4).
Based on the above functional relationship, if the actual frequency f0 of the fan is known, the rotation speed calculated according to equation (1) is the actual rotation speed n0 of the fan equal to μ (f 0). Knowing the actual rotating speed N0 of the fan and the actual power N0 of the fan, the air volume calculated according to the formula (2) is the actual value Q0-G (N0, N0) of the fan air volume. Knowing the actual rotating speed n0 and the actual value Q0 of the wind volume of the fan, the wind pressure calculated according to the formula (3) is the actual value P of the wind pressure of the fanT0H (Q0, n 0). The actual wind pressure value P of the fan is knownT0And the actual value Q0 of the air volume of the fan, the common flue pressure P0 of the range hood can be calculated according to the formula (4)T0-αQ02。
As shown in fig. 2, the operation of step S3 may be selected, and a target adjustment parameter of the fan is calculated according to the actual air volume value of the fan and the target air volume setting value, and the method for adjusting the fan specifically includes:
s31, according to the actual value Q0 of the fan air volume and the set value Q of the target air volumesetCalculating the wind pressure requirement value P of the fan according to the formula (4)T1，PT1＝PT0+α(Q2 set-Q02)。
As described above, the common flue pressure P0 of the environment where the range hood is located at the current moment is known, and the actual value Q0 of the air volume of the fan and the set value Q of the target air volume are known at the current momentsetThen, the wind pressure requirement value P of the fan can be calculated according to the formula (4)T1And calculating the required value P of wind pressure of the fanT1Characterized in that the set value Q of the air quantity is reached at the current moment under the outside pressure P0setThe required wind pressure of the fan.
Specifically, the actual value P of the wind pressure of the fan is knownT0The characteristic is that under the outside pressure P0, the wind pressure of the fan required by the current moment to reach the actual value Q0 of the wind volume of the fan meets the formula (4), namely PT0-P0＝αQ02. Known fan wind pressure requirement value PT1Characterized in that the current time reaches the target air volume set value Q under the outside pressure P0setThe required wind pressure of the fan, which satisfies the formula (4) PT1-P0＝αQ2 set. The two formulae are combined to obtain PT1-PT0＝α(Q2 set-Q02) I.e. PT1＝PT0+α(Q2 set-Q02)。
S32, calculating the required rotating speed n1 of the fan according to the formula (3), wherein n1 is H-1 Qset(PT1) Then, the target frequency f1 of the fan is calculated and adjusted according to the formula (1), wherein f1 is mu-1(n1)。
It is known that the target air volume set value Q is reached at the present moment under the outside pressure P0setThe required wind pressure requirement value of the fan is PT1Then, according to the formula (3), the wind pressure requirement value P of the fan can be calculatedT1And a target air volume set value QsetThe required fan required speed n1, n1 ═ H-1 Qset(PT1) Then, the target frequency f1 of the fan is calculated according to the formula (1), wherein f1 is mu-1(n1), wherein the target adjusting parameter of the fan is f1, the frequency of the fan is adjusted according to f1 to reach the frequency f1, and after the fan operates according to the parameter after the frequency is adjusted, the air volume of the range hood can reach the corresponding target air volume set value in the target air pressure intervalQsetWithin the set range of (2), the constant air volume within the air pressure interval, namely the stage constant air volume, is realized.
As shown in fig. 2, the optional adjusting method further includes: and if the actual value of the air volume of the fan is in the set range of the set value of the air volume or the fan is adjusted, restarting the process after a specific time length. And determining a target wind pressure interval in which the actual wind pressure value of the fan is located and a corresponding air volume set value, if the actual wind volume value of the fan is located in the set range of the air volume set value, which indicates that the fan and the air volume in the range of the set value at the current moment in the range of. Alternatively, after the fan is adjusted at step S3, it is restarted from step S1 after a certain time period Δ t.
It will be appreciated that this particular length of time Δ t may be very small (e.g., less than 0.5 seconds), enabling real-time adjustment of the entire range hood. If the specific time length delta t can be relatively large (for example, less than 1 minute), the smoke machine is adjusted regularly after certain smoke aggregation is generated, and the power consumption can be reduced.
The following description will be made by comparing the existing cigarette making machine with the cigarette making machine described in the embodiments of the present invention.
The nominal air volume of the range hood on the market at present is tested under laboratory conditions, the performance of the middle load, namely the pressure of a public flue, is not adjusted at all and is determined by the characteristics of an air duct system, however, in the actual use process of a user, the actual effective air volume is often lower, and the lower-level user is the larger the back pressure in the flue is, the lower the actual effective air volume is. To this problem, this embodiment controls the performance curve of load in the middle of the cigarette machine, combines user's in-service use scene, adjusts middle characteristic curve through amount of wind control procedure, and the effective amount of wind that satisfies the user's demand is invariable in the wind pressure interval, and the user is in the use, and the change that the effective amount of wind can not follow external load in the wind pressure interval of actual reduces, has solved the problem that the cigarette machine does not smoke and flows backward.
In the embodiment of the invention, the characteristic curve of the intermediate load of the range hood is optimized by adjusting the parameters of the range hood, so that the constant and effective air output in a wind pressure interval at home of a user is ensured, the smoking problem of the user is solved, the noise is reduced, and the user experience is improved.
Referring to figure 3, a graph of the performance of a prior art cigarette making machine is shown. The ordinate is the actual load of the user, namely the pressure of the public flue, the abscissa is the actual output air volume of the cigarette machine, and the ideal points of the air pressure and the air volume advertised by the cigarette machine are also provided, but the actual output air volume of the cigarette machine cannot reach the ideal value under the condition of large fan air pressure. The actual working conditions of the smoke exhaust machines in different users are different due to the installation of smoke pipes, the positions of the common flues in different floors, the simultaneous use opening rates of the smoke exhaust machines and the like. According to the formula (4), under the condition that the air pressure of the fan is determined, the air volume of the fan is small when the pressure of the common flue is large, and the air volume of the fan is large when the pressure of the common flue is small, so that the pressure of the common flue influences the air volume output. The pressure of the common flue of the range hood with poor working conditions is large, the actual air exhaust amount of the range hood is smaller than the constant effective air amount value meeting the requirements of users, and the range hood has poor smoking effect and does not smoke. The public flue pressure of the good cigarette machine of operating mode is little, then its actual volume of airing exhaust is greater than the permanent effective air volume value that satisfies user's demand, and the smoking effect does not have the problem, but the amount of wind is too big, can cause the noise big.
Referring to fig. 4, a staged constant air volume is realized for the performance curve of the optimized constant effective air volume range hood. When the load of the environment where the cigarette machine is located is in the setting interval, the actual effective air quantity of the cigarette machine is guaranteed to be constant, the actual effective air quantity can not change along with the change of the external load in the setting interval, the effective air quantity meeting the user demands is constant, the staged constant air quantity is realized, and the smoking effect is improved. For the load interval of the bottom layer household, the relatively poor working condition exists, so that the motor of the range hood can output enough rotating speed, namely the air volume after optimization is in the set range of the air volume before optimization, and the effective air volume is ensured not to be reduced; to the load interval of high-rise family, it has relatively better operating mode, can let the motor speed of cigarette machine reduce so, and the amount of wind is less than the amount of wind before optimizing promptly after optimizing, when guaranteeing user's smoking effect, noise reduction promotes user experience. The stage constant air volume considers more to ensure the smoking effect of the low-layer smoke machine. For the high-rise installation smoke machine, the smoke discharging working condition is smooth, the air quantity is properly improved, the noise is not obviously increased, and the kitchen oil smoke can be quickly sucked away.
If the constant effective air volume is set to be higher, the rotating speed change is not obvious and the noise change is not large for high-rise users with good working conditions. For the bottom layer users with poor working conditions, the same air quantity is improved, the rotating speed change is large, and the noise is large. Because the air volume determines the smoking speed, the air volume can meet the smoking effect for high-rise people, the noise is very low, but the high-rise users have certain complaints when the smoking speed is high. Therefore, the constant effective air volume is optimized in stages according to different requirements of different working conditions of a high-level user and a low-level user, the smoking effect is mainly achieved according to the low-level user (400, 600 Pa), excessive rotating speed noise is avoided, the constant effective air volume (such as air volume 10) is operated according to the low constant effective air volume, and the high-level user (0, 400 Pa) is set to operate according to the high constant effective air volume (such as air volume 12), so that the smoking speed is ensured.
The load or the external pressure in the present invention is equivalent to the common flue pressure, the fan air pressure is output according to the common flue pressure, and the common flue pressure and the fan air pressure have absolute correlation, so that fig. 3 and 4 can also be regarded as the optimized front-back relationship between the fan air pressure and the air volume.
In the embodiment of the invention, the stage constant air volume is realized through the stage constant air volume control logic, and the parameter control logic can be also applied to other products of the same type. Those skilled in the art will appreciate that the amount of residential kitchen exhaust air is selected with the goal of meeting kitchen exhaust air requirements. The exhaust air volume is too small, the oil smoke can escape, and the kitchen has peculiar smell. However, it is not preferable that the larger the size is, the larger the amount of exhaust air is, and the more the power consumption and noise of the fan in the kitchen will be increased. According to the embodiment of the invention, the fan characteristic curve is optimized through program control according to the actual use requirements of users, on the basis of ensuring that the use requirements of users on each floor are met, the air quantity of high-rise users is reduced, the noise is reduced, and meanwhile, the smoking effect of low-rise users is ensured.
The embodiment of the invention also provides a regulating device of a cigarette making machine, the cigarette making machine comprises a fan, and as shown in figure 5, the regulating device comprises: the parameter acquisition module 10 is used for acquiring the operation parameters of the fan and calculating to obtain an actual air volume value of the fan, an actual air pressure value of the fan and the pressure of the common flue; the processing parameter module 20 is configured to determine a target wind pressure interval where the actual value of the wind pressure of the fan is located and a corresponding set value of the wind volume, and if the actual value of the wind volume of the fan exceeds the set range of the set value of the wind volume, determine the set value of the wind volume as the set value of the target wind volume; and the adjusting parameter module 30 is used for calculating a target adjusting parameter of the fan according to the actual air quantity value and the target air quantity set value of the fan and adjusting the fan.
The operation parameters of the selectable fan comprise the actual frequency and the operation power of the fan, and the target adjusting parameters of the fan comprise the target frequency of the fan.
The optional acquisition parameter module comprises:
the collection unit is used for collecting the actual frequency f0 and the running power N0 of the fan;
a first arithmetic unit for calculating the actual speed n0 of the fan according to the formula (1), the actual value Q0 of the wind volume of the fan according to the formula (2), and the actual value P of the wind pressure of the fan according to the formula (3)T0Calculating a common flue pressure P0 according to equation (4);
n＝μ(f) (1)；
Q＝G(n，N) (2)；
PT＝H(Q，n) (3)；
wherein xi is the resistance coefficient of the branch pipe of the cigarette machine, and A is the sectional area of the branch pipe of the cigarette machine.
The optional tuning parameter module includes:
a second arithmetic unit for calculating a target air volume set value Q according to the actual value Q0 of the fan air volume and the target air volume set value QsetCalculating the wind pressure requirement of the fan according to the formula (4)Evaluation PT1，PT1＝PT0+α(Q2 set-Q02) (ii) a Calculating the required rotating speed n1 of the fan according to the formula (3), wherein n1 is H-1 Qset(PT1) Then, the target frequency f1 of the fan is calculated according to the formula (1), wherein f1 is mu-1(n1)；
And the adjusting unit is used for adjusting the frequency of the fan according to the target frequency f1 of the fan.
Optionally, the adjusting device further comprises: and the circulation module 40 is used for restarting the process after a specific time length if the actual value of the air volume of the fan is within the set range of the air volume set value or the fan is adjusted.
It can be understood that the collection of each operating parameter in the cigarette machine can be carried out through the sensor arranged at the corresponding position of the cigarette machine so as to obtain each operating parameter in the cigarette machine.
Accordingly, the control logic of the frequency conversion scheme of the air volume control program is as follows:
step 1: acquiring the frequency f0 of the fan at the time t0, and obtaining the fan rotating speed n0 at the time as mu (f0) according to the formula (1);
step 2: collecting motor power N0 at t0, and obtaining an actual fan air volume value Q0-G (N0, N0) at the moment according to formula (2); obtaining the actual value P of the wind pressure of the fan at the moment according to the formula (3)T0＝H(Q0，n0)；
Step 3: the wind quantity Q0 and the wind pressure P at the moment are measuredT0Respectively corresponding to the wind pressure set value PTset1And a set value Q of air quantityset1And (3) comparison:
if the wind pressure PT0At the wind pressure set value PTset1While the air flow rate Q0 is at the air flow rate set value Qset1Within the set range of (3), the Step is ended, and the process is restarted from Step1 at the next time t0+ Δ t;
if the wind pressure PT0At the wind pressure set value PTset1But the air flow rate Q0 exceeds the air flow rate set value Qset1Step5 is performed with the target air volume setting value Qset being Qset 1; otherwise, performing Step 4;
step 4: the wind quantity Q0 and the wind pressure at the moment are measuredPT0Respectively corresponding to the wind pressure set value PTset2And a set value Q of air quantityset2And (3) comparison:
if the wind pressure PT0At the wind pressure set value PTset2While the air flow rate Q0 is at the air flow rate set value Qset2Within the set range of (3), the Step is ended, and the process is restarted from Step1 at the next time t0+ Δ t;
if the wind pressure PT0At the wind pressure set value PTset2But the air flow rate Q0 exceeds the air flow rate set value Qset2Step5 is performed with the target air volume setting value Qset being Qset 2;
step 5: obtaining the actual value P of the wind pressure of the fan at the moment according to the formula (3)T0H (Q0, n0), and the common flue pressure P0 at that time point is calculated from equation (4) as PT0-αQ02Thus, the required wind pressure P reaching the target wind volume set value under the external pressure P0 can be obtainedT1，PT1＝PT0+α(Qset2-Q02)；
Step 6: determining the required rotating speed of the fan under the external pressure as n1 ═ H according to the formula (3)-1 Qset(PT1) Further, from (1), the target value of the fan frequency adjustment is obtained as f1 ═ μ-1(n1)；
Step 7: at the next time t0+ Δ t, it restarts at Step 1.
In the embodiment, the output effective air volume is kept constant in the set air pressure interval, and the effective air volume cannot change along with the change of the external pressure in the set air pressure interval, so that the influence of the pressure of a common flue on the air volume is eliminated. To relatively poor operating mode cigarette machine, can export sufficient rotational speed, guarantee effective amount of wind and do not reduce, to better operating mode cigarette machine, can reduce the rotational speed, when guaranteeing the smoking effect, the noise reduction promotes user experience, realizes the permanent amount of wind of stage nature. The stage constant air volume takes more consideration of smoking effects of smoke machines installed on floors with different heights, stage optimization is carried out on the constant effective air volume, aiming at low-level users such as (400, 600 Pa), the stage constant air volume mainly solves the smoking effect, does not have overhigh rotating speed noise, operates according to the lower constant effective air volume such as air volume 10, aims at high-level users such as [0, 400Pa ], sets higher constant effective air volume such as air volume 12 to operate, ensures fast smoking, reduces the air volume of the high-level users on the basis of ensuring that the use of the users on each floor is met, reduces the noise, and simultaneously ensures the smoking effect of the low-level users.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (4)
1. An adjustment method for a range hood, said range hood including a fan, the adjustment method comprising:
collecting the operating parameters of the fan, and calculating to obtain an actual value of the air volume of the fan, an actual value of the air pressure of the fan and the pressure of a common flue;
determining a target wind pressure interval where the actual fan wind pressure value is located and a corresponding wind volume set value, and if the actual fan wind volume value exceeds the set range of the wind volume set value, determining the wind volume set value as the target wind volume set value;
calculating to obtain a target adjusting parameter of the fan according to the actual air volume value of the fan and the target air volume set value, and adjusting the fan;
the operation parameters of the fan comprise the actual frequency and the operation power of the fan, and the target adjusting parameters of the fan comprise the target frequency of the fan;
wherein, gather the operating parameter of fan, calculation obtains fan amount of wind actual value, fan wind pressure actual value and public flue pressure, includes:
collecting the actual frequency f0 and the running power N0 of the fan;
calculating the actual rotating speed n0 of the fan according to the formula (1), calculating the actual air volume value Q0 of the fan according to the formula (2), and calculating the actual air pressure value P of the fan according to the formula (3)T0Calculating the common flue pressure P0 according to equation (4);
n＝μ(f) (1)；
Q＝G(n，N) (2)；
PT＝H(Q，n) (3)；
wherein xi is the resistance coefficient of the branch pipe of the cigarette machine, and A is the sectional area of the branch pipe of the cigarette machine;
calculating a target adjusting parameter of the fan according to the actual air volume value of the fan and the target air volume set value, and adjusting the fan, wherein the method comprises the following steps:
according to the actual value Q0 of the air volume of the fan and the set value Q of the target air volumesetCalculating the wind pressure requirement value P of the fan according to the formula (4)T1，PT1＝PT0+α(Q2 set-Q02)；
Calculating the required rotating speed n1 of the fan according to the formula (3), wherein n1 is H-1 Qset(PT1) And then calculating and adjusting the target frequency f1 of the fan according to the formula (1), wherein f1 is mu-1(n1)。
2. The adjustment method according to claim 1, further comprising: and if the actual value of the air volume of the fan is in the set range of the set value of the air volume or the fan is adjusted, restarting the process after a certain time length.
3. An adjustment device for a range hood, said range hood comprising a fan, the adjustment device comprising:
the parameter acquisition module is used for acquiring the operating parameters of the fan and calculating to obtain an actual value of the air volume of the fan, an actual value of the air pressure of the fan and the pressure of a public flue;
the processing parameter module is used for determining a target wind pressure interval where the actual value of the wind pressure of the fan is and a corresponding set value of the wind volume, and if the actual value of the wind volume of the fan exceeds the set range of the set value of the wind volume, determining the set value of the wind volume as the set value of the target wind volume;
the adjusting parameter module is used for calculating a target adjusting parameter of the fan according to the actual air quantity value of the fan and the set target air quantity value and adjusting the fan;
the operation parameters of the fan comprise the actual frequency and the operation power of the fan, and the target adjusting parameters of the fan comprise the target frequency of the fan;
wherein, the collection parameter module includes:
the collection unit is used for collecting the actual frequency f0 and the running power N0 of the fan;
a first arithmetic unit for calculating the actual speed n0 of the fan according to the formula (1), the actual wind quantity Q0 of the fan according to the formula (2), and the actual wind pressure P of the fan according to the formula (3)T0Calculating the common flue pressure P0 according to equation (4);
n＝μ(f) (1)；
Q＝G(n，N) (2)；
PT＝H(Q，n) (3)；
wherein xi is the resistance coefficient of the branch pipe of the cigarette machine, and A is the sectional area of the branch pipe of the cigarette machine;
wherein the parameter adjusting module comprises:
a second arithmetic unit for calculating the actual value Q0 of the fan air volume and the set value Q of the target air volumesetAccording to the formula(4) Calculating the wind pressure requirement value P of the fanT1，PT1＝PT0+α(Q2 set-Q02) (ii) a Calculating the required rotating speed n1 of the fan according to the formula (3), wherein n1 is H-1 Qset(PT1) And calculating the target frequency f1, f1 mu of the fan according to the formula (1)-1(n1)；
And the adjusting unit is used for adjusting the frequency of the fan according to the target frequency f1 of the fan.
4. The adjustment device of claim 3, further comprising: and the circulation module is used for restarting the process after a specific time length if the actual air volume value of the fan is within the set range of the air volume set value or the fan is regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010156649.8A CN113108330B (en) | 2020-03-09 | 2020-03-09 | Method and device for adjusting range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010156649.8A CN113108330B (en) | 2020-03-09 | 2020-03-09 | Method and device for adjusting range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113108330A CN113108330A (en) | 2021-07-13 |
| CN113108330B true CN113108330B (en) | 2022-06-10 |
Family
ID=76709146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010156649.8A Active CN113108330B (en) | 2020-03-09 | 2020-03-09 | Method and device for adjusting range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113108330B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113687175B (en) * | 2021-09-26 | 2023-08-22 | 佛山市顺德区美的洗涤电器制造有限公司 | Smoke exhaust ventilator and testing method and testing device thereof |
| CN114635867B (en) * | 2022-03-10 | 2023-12-01 | 广东华美骏达电器有限公司 | Automatic calibration method and calibration system for air quantity of fan |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423837B (en) * | 2013-07-25 | 2015-09-30 | 青岛海信日立空调系统有限公司 | Free static pressure air-cooled ducted air conditioner |
| CN103836691B (en) * | 2014-02-28 | 2018-03-30 | 广东威灵电机制造有限公司 | Lampblack absorber and its constant wind quantity adjusting method and system |
| CN104729017B (en) * | 2015-03-16 | 2018-03-16 | 广东美的暖通设备有限公司 | The constant air capacity control of air conditioner, control device |
| CN104764155A (en) * | 2015-03-27 | 2015-07-08 | 广东美的制冷设备有限公司 | Air conditioner air volume control system, air conditioner air volume control method and air conditioner |
| CN106225249B (en) * | 2016-08-31 | 2020-04-24 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and safety control system and method thereof |
| CN110375362B (en) * | 2019-06-28 | 2020-08-11 | 宁波方太厨具有限公司 | Constant air volume control method for range hood |
-
2020
- 2020-03-09 CN CN202010156649.8A patent/CN113108330B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113108330A (en) | 2021-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113108330B (en) | Method and device for adjusting range hood | |
| CN110375362A (en) | A kind of range hood constant air capacity control | |
| KR101050412B1 (en) | Energy-saving kitchen ventilation control system and method | |
| CN112050270B (en) | Control method of range hood | |
| CN110594956A (en) | Filter screen filth blockage detection method and device and air conditioner | |
| CN111197776B (en) | Flow distribution control method for central flue system of high-rise building | |
| CN105546603A (en) | Range hood and wind speed and wind pressure sensor for range hood | |
| CN107367022A (en) | For controlling the method and device of air-conditioning | |
| CN110274285B (en) | Building public flue smoke exhaust system and control method thereof | |
| CN113108331B (en) | Method and device for adjusting range hood | |
| CN109489215B (en) | Wind speed self-adaptive control method, control device and combined air conditioning unit | |
| CN111197775A (en) | Flow distribution control method for central flue system of high-rise building | |
| CN113108328B (en) | Method and device for adjusting range hood | |
| CN114017819A (en) | Residential kitchen and bathroom exhaust system control device and method | |
| CN113108332B (en) | Method and device for adjusting range hood | |
| CN111829035B (en) | Range hood smoke exhaust efficiency detection method and range hood control method | |
| CN113108335B (en) | Air volume control method and device for range hood | |
| CN113108337B (en) | Air volume control method and device for range hood | |
| CN107655048A (en) | Range hood and constant air volume adjusting method and system thereof | |
| CN113108329B (en) | Method and device for adjusting range hood | |
| CN113108336B (en) | Wind pressure control method and device of range hood | |
| CN111197773B (en) | Flow distribution control method for central flue system of high-rise building | |
| CN113108338B (en) | Wind pressure control method and device for range hood | |
| CN113108334B (en) | Wind pressure control method and device for range hood | |
| CN113108333B (en) | Wind pressure control method and device for range hood |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |